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authorache <ache@FreeBSD.org>1997-01-04 22:09:20 +0000
committerache <ache@FreeBSD.org>1997-01-04 22:09:20 +0000
commit3880fb335ddcfebede5221eca08f4f5bd51cb297 (patch)
treefd9ee535016885441323dc3737c96cfaeb7637d3 /contrib
parent6471025dfa8bf22d687f0eb6e53c167736167d96 (diff)
parent5d98671f252cc8d4b22d6e8ffce71b258ee939f0 (diff)
downloadFreeBSD-src-3880fb335ddcfebede5221eca08f4f5bd51cb297.zip
FreeBSD-src-3880fb335ddcfebede5221eca08f4f5bd51cb297.tar.gz
This commit was generated by cvs2svn to compensate for changes in r21308,
which included commits to RCS files with non-trunk default branches.
Diffstat (limited to 'contrib')
-rw-r--r--contrib/libreadline/COPYING339
-rw-r--r--contrib/libreadline/ChangeLog403
-rw-r--r--contrib/libreadline/Makefile.in192
-rw-r--r--contrib/libreadline/README6
-rw-r--r--contrib/libreadline/STANDALONE32
-rw-r--r--contrib/libreadline/ansi_stdlib.h41
-rw-r--r--contrib/libreadline/bind.c1710
-rw-r--r--contrib/libreadline/callback.c144
-rw-r--r--contrib/libreadline/chardefs.h127
-rw-r--r--contrib/libreadline/complete.c1542
-rw-r--r--contrib/libreadline/display.c1503
-rw-r--r--contrib/libreadline/doc/Makefile69
-rw-r--r--contrib/libreadline/doc/hist.texinfo112
-rw-r--r--contrib/libreadline/doc/hstech.texinfo504
-rw-r--r--contrib/libreadline/doc/hsuser.texinfo304
-rw-r--r--contrib/libreadline/doc/rlman.texinfo110
-rw-r--r--contrib/libreadline/doc/rltech.texinfo1530
-rw-r--r--contrib/libreadline/doc/rluser.texinfo1166
-rw-r--r--contrib/libreadline/emacs_keymap.c885
-rw-r--r--contrib/libreadline/examples/Inputrc65
-rw-r--r--contrib/libreadline/examples/Makefile19
-rw-r--r--contrib/libreadline/examples/fileman.c426
-rw-r--r--contrib/libreadline/examples/histexamp.c82
-rw-r--r--contrib/libreadline/examples/manexamp.c94
-rw-r--r--contrib/libreadline/examples/rltest.c54
-rw-r--r--contrib/libreadline/funmap.c247
-rw-r--r--contrib/libreadline/histexpand.c1358
-rw-r--r--contrib/libreadline/histfile.c324
-rw-r--r--contrib/libreadline/histlib.h81
-rw-r--r--contrib/libreadline/history.c385
-rw-r--r--contrib/libreadline/history.h210
-rw-r--r--contrib/libreadline/histsearch.c197
-rw-r--r--contrib/libreadline/input.c449
-rw-r--r--contrib/libreadline/isearch.c410
-rw-r--r--contrib/libreadline/keymaps.c150
-rw-r--r--contrib/libreadline/keymaps.h95
-rw-r--r--contrib/libreadline/kill.c547
-rw-r--r--contrib/libreadline/macro.c277
-rw-r--r--contrib/libreadline/nls.c198
-rw-r--r--contrib/libreadline/parens.c156
-rw-r--r--contrib/libreadline/posixdir.h49
-rw-r--r--contrib/libreadline/posixstat.h142
-rw-r--r--contrib/libreadline/readline.c2003
-rw-r--r--contrib/libreadline/readline.h391
-rw-r--r--contrib/libreadline/rlconf.h63
-rw-r--r--contrib/libreadline/rldefs.h146
-rw-r--r--contrib/libreadline/rltty.c726
-rw-r--r--contrib/libreadline/rltty.h61
-rw-r--r--contrib/libreadline/search.c369
-rw-r--r--contrib/libreadline/signals.c334
-rw-r--r--contrib/libreadline/tcap.h57
-rw-r--r--contrib/libreadline/terminal.c554
-rw-r--r--contrib/libreadline/tilde.c390
-rw-r--r--contrib/libreadline/tilde.h59
-rw-r--r--contrib/libreadline/undo.c261
-rw-r--r--contrib/libreadline/util.c315
-rw-r--r--contrib/libreadline/vi_keymap.c877
-rw-r--r--contrib/libreadline/vi_mode.c1378
-rw-r--r--contrib/libreadline/xmalloc.c87
59 files changed, 24805 insertions, 0 deletions
diff --git a/contrib/libreadline/COPYING b/contrib/libreadline/COPYING
new file mode 100644
index 0000000..a43ea21
--- /dev/null
+++ b/contrib/libreadline/COPYING
@@ -0,0 +1,339 @@
+ GNU GENERAL PUBLIC LICENSE
+ Version 2, June 1991
+
+ Copyright (C) 1989, 1991 Free Software Foundation, Inc.
+ 675 Mass Ave, Cambridge, MA 02139, USA
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
+ Preamble
+
+ The licenses for most software are designed to take away your
+freedom to share and change it. By contrast, the GNU General Public
+License is intended to guarantee your freedom to share and change free
+software--to make sure the software is free for all its users. This
+General Public License applies to most of the Free Software
+Foundation's software and to any other program whose authors commit to
+using it. (Some other Free Software Foundation software is covered by
+the GNU Library General Public License instead.) You can apply it to
+your programs, too.
+
+ When we speak of free software, we are referring to freedom, not
+price. Our General Public Licenses are designed to make sure that you
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+anyone to deny you these rights or to ask you to surrender the rights.
+These restrictions translate to certain responsibilities for you if you
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+
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+ GNU GENERAL PUBLIC LICENSE
+ TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
+
+ 0. This License applies to any program or other work which contains
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+ NO WARRANTY
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+ 11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY
+FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN
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+WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR
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+YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER
+PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE
+POSSIBILITY OF SUCH DAMAGES.
+
+ END OF TERMS AND CONDITIONS
+
+ Appendix: How to Apply These Terms to Your New Programs
+
+ If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+ To do so, attach the following notices to the program. It is safest
+to attach them to the start of each source file to most effectively
+convey the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+ <one line to give the program's name and a brief idea of what it does.>
+ Copyright (C) 19yy <name of author>
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+
+Also add information on how to contact you by electronic and paper mail.
+
+If the program is interactive, make it output a short notice like this
+when it starts in an interactive mode:
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+ Gnomovision version 69, Copyright (C) 19yy name of author
+ Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+ This is free software, and you are welcome to redistribute it
+ under certain conditions; type `show c' for details.
+
+The hypothetical commands `show w' and `show c' should show the appropriate
+parts of the General Public License. Of course, the commands you use may
+be called something other than `show w' and `show c'; they could even be
+mouse-clicks or menu items--whatever suits your program.
+
+You should also get your employer (if you work as a programmer) or your
+school, if any, to sign a "copyright disclaimer" for the program, if
+necessary. Here is a sample; alter the names:
+
+ Yoyodyne, Inc., hereby disclaims all copyright interest in the program
+ `Gnomovision' (which makes passes at compilers) written by James Hacker.
+
+ <signature of Ty Coon>, 1 April 1989
+ Ty Coon, President of Vice
+
+This General Public License does not permit incorporating your program into
+proprietary programs. If your program is a subroutine library, you may
+consider it more useful to permit linking proprietary applications with the
+library. If this is what you want to do, use the GNU Library General
+Public License instead of this License.
diff --git a/contrib/libreadline/ChangeLog b/contrib/libreadline/ChangeLog
new file mode 100644
index 0000000..1cf0c00
--- /dev/null
+++ b/contrib/libreadline/ChangeLog
@@ -0,0 +1,403 @@
+Tue Mar 23 14:36:51 1993 Brian Fox (bfox@eos.crseo.ucsb.edu)
+
+ * readline.c (rl_copy): Changed name to rl_copy_text.
+
+Mon Mar 22 19:16:05 1993 Brian Fox (bfox@eos.crseo.ucsb.edu)
+
+ * dispose_cmd.c, several other files. Declare dispose_xxx () as
+ "void".
+
+ * builtins/hashcom.h: Make declarations of hashed_filenames be
+ "extern" to keep the SGI compiler happy.
+
+ * readline.c (rl_initialize_everything): Assign values to
+ out_stream and in_stream immediately, since
+ output_character_function () can be called before
+ readline_internal () is called.
+
+Tue Dec 8 09:30:56 1992 Brian Fox (bfox@cubit)
+
+ * readline.c (rl_init_terminal) Set PC from BC, not from *buffer.
+
+Mon Nov 30 09:35:47 1992 Brian Fox (bfox@cubit)
+
+ * readline.c (invoking_keyseqs_in_map, rl_parse_and_bind) Allow
+ backslash to quote characters, such as backslash, double quote,
+ and space. Backslash quotes all character indiscriminately.
+
+ * funmap.c (vi_keymap) Fix type in "vi-replace" declaration.
+
+Fri Nov 20 10:55:05 1992 Brian Fox (bfox@cubit)
+
+ * readline.c (init_terminal_io, rl_prep_terminal): FINALLY!
+ Declare and use termcap variable `ospeed' when setting up terminal
+ parameters.
+
+Thu Oct 8 08:53:07 1992 Brian J. Fox (bfox@helios)
+
+ * Makefile, this directory: Include (as links to the canonical
+ sources), tilde.c, tilde.h, posixstat.h and xmalloc.c.
+
+Tue Sep 29 13:07:21 1992 Brian J. Fox (bfox@helios)
+
+ * readline.c (init_terminal_io) Don't set arrow keys if the key
+ sequences that represent them are already set.
+
+ * readline.c (rl_function_of_keyseq) New function returns the first
+ function (or macro) found while searching a key sequence.
+
+Mon Sep 28 00:34:04 1992 Brian J. Fox (bfox@helios)
+
+ * readline.c (LibraryVersion) New static char * contains current
+ version number. Version is at 2.0.
+
+ * readline.c (rl_complete_internal): Incorporated clean changes
+ from gilmore (gnu@cygnus.com) to support quoted substrings within
+ completion functions.
+
+ * readline.c (many locations) Added support for the _GO32_,
+ whatever that is. Patches supplied by Cygnus, typed in by hand,
+ with cleanups.
+
+Sun Aug 16 12:46:24 1992 Brian Fox (bfox@cubit)
+
+ * readline.c (init_terminal_io): Find out the values of the keypad
+ arrows and bind them to appropriate RL functions if present.
+
+Mon Aug 10 18:13:24 1992 Brian Fox (bfox@cubit)
+
+ * history.c (stifle_history): A negative argument to stifle
+ becomes zero.
+
+Tue Jul 28 09:28:41 1992 Brian Fox (bfox@cubit)
+
+ * readline.c (rl_variable_bind): New local structure describes
+ booleans by name and address; code in rl_variable_bind () looks at
+ structure to set simple variables.
+
+ * parens.c (rl_insert_close): New variable rl_blink_matching_paren
+ is non-zero if we want to blink the matching open when a close is
+ inserted. If FD_SET is defined, rl_blink_matching_paren defaults
+ to 1, else 0. If FD_SET is not defined, and
+ rl_blink_matching_paren is non-zero, the close character(s) are/is
+ simply inserted.
+
+Wed Jul 22 20:03:59 1992 Brian Fox (bfox@cubit)
+
+ * history.c, readline.c, vi_mode.c: Cause the functions strchr ()
+ and strrchr () to be used instead of index () and rindex ()
+ throughout the source.
+
+Mon Jul 13 11:34:07 1992 Brian Fox (bfox@cubit)
+
+ * readline.c: (rl_variable_bind) New variable "meta-flag" if "on"
+ means force the use of the 8th bit as Meta bit. Internal variable
+ is called meta_flag.
+
+Thu Jul 9 10:37:56 1992 Brian Fox (bfox@cubit)
+
+ * history.c (get_history_event) Change INDEX to LOCAL_INDEX. If
+ compiling for the shell, allow shell metacharacters to separate
+ history tokens as they would for shell tokens.
+
+Sat Jul 4 19:29:12 1992 Brian Fox (bfox@cubit)
+
+ * vi_keymap.c: According to Posix, TAB self-inserts instead of
+ doing completion.
+
+ * vi_mode.c: (rl_vi_yank_arg) Enter VI insert mode after yanking
+ an arg from the previous line.
+
+ * search.c: New file takes over vi style searching and implements
+ non-incremental searching the history.
+
+ Makefile: Add search.c and search.o.
+
+ funmap.c: Add names for non-incremental-forward-search-history and
+ non-incremental-reverse-search-history.
+
+ readline.h: Add extern definitions for non-incremental searching.
+
+ vi_mode.c: Remove old search code; add calls to code in search.c.
+
+Fri Jul 3 10:36:33 1992 Brian Fox (bfox@cubit)
+
+ * readline.c (rl_delete_horizontal_space); New function deletes
+ all whitespace surrounding point.
+
+ funmap.c: Add "delete-horizontal-space".
+ emacs_keymap.c: Put rl_delete_horizontal_space () on M-\.
+
+ * readline.c (rl_set_signals, rl_clear_signals); New function
+ rl_set_sighandler () is either defined in a Posix way (if
+ HAVE_POSIX_SIGNALS is defined) or in a BSD way. Function is
+ called from rl_set_signals () and rl_clear_signals ().
+
+Fri May 8 12:50:15 1992 Brian Fox (bfox@cubit)
+
+ * readline.c: (readline_default_bindings) Do comparisons with
+ _POSIX_VDISABLE casted to `unsigned char'. Change tty characters
+ to be unsigned char.
+
+Thu Apr 30 12:36:35 1992 Brian Fox (bfox@cubit)
+
+ * readline.c: (rl_getc) Handle "read would block" error on
+ non-blocking IO streams.
+
+ * readline.c: (rl_signal_handler): Unblock only the signal that we
+ have caught, not all signals.
+
+Sun Feb 23 03:33:09 1992 Brian Fox (bfox at gnuwest.fsf.org)
+
+ * readline.c: Many functions. Use only the macros META_CHAR and
+ UNMETA to deal with meta characters. Prior to this, we used
+ numeric values and tests.
+
+ * readline.c (rl_complete_internal) Report exactly the number of
+ possible completions, not the number + 1.
+
+ * vi_mode.c (rl_do_move) Do not change the cursor position when
+ using `cw' or `cW'.
+
+ * vi_mode.c (rl_vi_complete) Enter insert mode after completing
+ with `*' or `\'.
+
+Fri Feb 21 05:58:18 1992 Brian Fox (bfox at gnuwest.fsf.org)
+
+ * readline.c (rl_dispatch) Increment rl_key_sequence_length for
+ meta characters that map onto ESC map.
+
+Mon Feb 10 01:41:35 1992 Brian Fox (bfox at gnuwest.fsf.org)
+
+ * history.c (history_do_write) Build a buffer of all of the lines
+ to write and write them in one fell swoop (lower overhead than
+ calling write () for each line). Suggested by Peter Ho.
+
+ * readline.c: Include hbullx20 as well as hpux for determining
+ USGr3ness.
+
+ * readline.c (rl_unix_word_rubout) As per the "Now REMEMBER"
+ comment, pass arguments to rl_kill_text () in the correct order to
+ preserve prepending and appending of killed text.
+
+ * readline.c (rl_search_history) malloc (), realloc (), and free
+ () SEARCH_STRING so that there are no static limits on searching.
+
+ * vi_mode.c (rl_vi_subst) Don't forget to end the undo group.
+
+Fri Jan 31 14:51:02 1992 Brian Fox (bfox at gnuwest.fsf.org)
+
+ * readline.c (rl_signal_handler): Zero the current history entry's
+ pointer after freeing the undo_list when SIGINT received.
+ Reformat a couple of functions.
+
+Sat Jan 25 13:47:35 1992 Brian Fox (bfox at bears)
+
+ * readline.c (parser_if): free () TNAME after use.
+
+Tue Jan 21 01:01:35 1992 Brian Fox (bfox at gnuwest.fsf.org)
+
+ * readline.c (rl_redisplay) and (rl_character_len): Display
+ Control characters as "^c" and Meta characters as "\234", instead
+ of "C-C" and "M-C".
+
+Sun Dec 29 10:59:00 1991 Brian Fox (bfox at gnuwest.fsf.org)
+
+ * readline.c (init_terminal_io) Default to environment variables
+ LINES and COLUMNS before termcap entry values. If all else fails,
+ then assume 80x24 terminal.
+
+Sat Dec 28 16:33:11 1991 Brian Fox (bfox at gnuwest.fsf.org)
+
+ * readline.c: If this machine is USG and it is hpux, then define
+ USGr3.
+
+ * history.c: Cosmetic fixes.
+
+Thu Nov 21 00:10:12 1991 Brian Fox (bfox at gnuwest.fsf.org)
+
+ * vi_mode.c: (rl_do_move) Place cursor at end of line, never at
+ next to last character.
+
+Thu Nov 14 05:08:01 1991 Brian Fox (bfox at gnuwest.fsf.org)
+
+ * history.c (get_history_event) Non-anchored searches can have a
+ return index of greater than zero from get_history_event ().
+
+Fri Nov 1 07:02:13 1991 Brian Fox (bfox at gnuwest.fsf.org)
+
+ * readline.c (rl_translate_keyseq) Make C-? translate to RUBOUT
+ unconditionally.
+
+Mon Oct 28 11:34:52 1991 Brian Fox (bfox at gnuwest.fsf.org)
+
+ * readline.c; Use Posix directory routines and macros.
+
+ * funmap.c; Add entry for call-last-kbd-macro.
+
+ * readline.c (rl_prep_term); Use system EOF character on POSIX
+ systems also.
+
+Thu Oct 3 16:19:53 1991 Brian Fox (bfox at gnuwest.fsf.org)
+
+ * readline.c; Make a distinction between having a TERMIOS tty
+ driver, and having POSIX signal handling. You might one without
+ the other. New defines used HAVE_POSIX_SIGNALS, and
+ TERMIOS_TTY_DRIVER.
+
+Tue Jul 30 22:37:26 1991 Brian Fox (bfox at gnuwest.fsf.org)
+
+ * readline.c: rl_getc () If a call to read () returns without an
+ error, but with zero characters, the file is empty, so return EOF.
+
+Thu Jul 11 20:58:38 1991 Brian Fox (bfox at gnuwest.fsf.org)
+
+ * readline.c: (rl_get_next_history, rl_get_previous_history)
+ Reallocate the buffer space if the line being moved to is longer
+ the the current space allocated. Amazing that no one has found
+ this bug until now.
+
+Sun Jul 7 02:37:05 1991 Brian Fox (bfox at gnuwest.fsf.org)
+
+ * readline.c:(rl_parse_and_bind) Allow leading whitespace.
+ Make sure TERMIO and TERMIOS systems treat CR and NL
+ disctinctly.
+
+Tue Jun 25 04:09:27 1991 Brian Fox (bfox at gnuwest.fsf.org)
+
+ * readline.c: Rework parsing conditionals to pay attention to the
+ prior states of the conditional stack. This makes $if statements
+ work correctly.
+
+Mon Jun 24 20:45:59 1991 Brian Fox (bfox at gnuwest.fsf.org)
+
+ * readline.c: support for displaying key binding information
+ includes the functions rl_list_funmap_names (),
+ invoking_keyseqs_in_map (), rl_invoking_keyseqs (),
+ rl_dump_functions (), and rl_function_dumper ().
+
+ funmap.c: support for same includes rl_funmap_names ().
+
+ readline.c, funmap.c: no longer define STATIC_MALLOC. However,
+ update both version of xrealloc () to handle a null pointer.
+
+Thu Apr 25 12:03:49 1991 Brian Fox (bfox at gnuwest.fsf.org)
+
+ * vi_mode.c (rl_vi_fword, fWord, etc. All functions use
+ the macro `isident()'. Fixed movement bug which prevents
+ continious movement through the text.
+
+Fri Jul 27 16:47:01 1990 Brian Fox (bfox at gnuwest.fsf.org)
+
+ * readline.c (parser_if) Allow "$if term=foo" construct.
+
+Wed May 23 16:10:33 1990 Brian Fox (bfox at gnuwest.fsf.org)
+
+ * readline.c (rl_dispatch) Correctly remember the last command
+ executed. Fixed typo in username_completion_function ().
+
+Mon Apr 9 19:55:48 1990 Brian Fox (bfox at gnuwest.fsf.org)
+
+ * readline.c: username_completion_function (); For text passed in
+ with a leading `~', remember that this could be a filename (after
+ it is completed).
+
+Thu Apr 5 13:44:24 1990 Brian Fox (bfox at gnuwest.fsf.org)
+
+ * readline.c: rl_search_history (): Correctly handle case of an
+ unfound search string, but a graceful exit (as with ESC).
+
+ * readline.c: rl_restart_output (); The Apollo passes the address
+ of the file descriptor to TIOCSTART, not the descriptor itself.
+
+Tue Mar 20 05:38:55 1990 Brian Fox (bfox at gnuwest.fsf.org)
+
+ * readline.c: rl_complete (); second call in a row causes possible
+ completions to be listed.
+
+ * readline.c: rl_redisplay (), added prompt_this_line variable
+ which is the first character character following \n in prompt.
+
+Sun Mar 11 04:32:03 1990 Brian Fox (bfox at gnuwest.fsf.org)
+
+ * Signals are now supposedly handled inside of SYSV compilation.
+
+Wed Jan 17 19:24:09 1990 Brian Fox (bfox at sbphy.ucsb.edu)
+
+ * history.c: history_expand (); fixed overwriting memory error,
+ added needed argument to call to get_history_event ().
+
+Thu Jan 11 10:54:04 1990 Brian Fox (bfox at sbphy.ucsb.edu)
+
+ * readline.c: added mark_modified_lines to control the
+ display of an asterisk on modified history lines. Also
+ added a user variable called mark-modified-lines to the
+ `set' command.
+
+Thu Jan 4 10:38:05 1990 Brian Fox (bfox at sbphy.ucsb.edu)
+
+ * readline.c: start_insert (). Only use IC if we don't have an im
+ capability.
+
+Fri Sep 8 09:00:45 1989 Brian Fox (bfox at aurel)
+
+ * readline.c: rl_prep_terminal (). Only turn on 8th bit
+ as meta-bit iff the terminal is not using parity.
+
+Sun Sep 3 08:57:40 1989 Brian Fox (bfox at aurel)
+
+ * readline.c: start_insert (). Uses multiple
+ insertion call in cases where that makes sense.
+
+ rl_insert (). Read type-ahead buffer for additional
+ keys that are bound to rl_insert, and insert them
+ all at once. Make insertion of single keys given
+ with an argument much more efficient.
+
+Tue Aug 8 18:13:57 1989 Brian Fox (bfox at aurel)
+
+ * readline.c: Changed handling of EOF. readline () returns
+ (char *)EOF or consed string. The EOF character is read from the
+ tty, or if the tty doesn't have one, defaults to C-d.
+
+ * readline.c: Added support for event driven programs.
+ rl_event_hook is the address of a function you want called
+ while Readline is waiting for input.
+
+ * readline.c: Cleanup time. Functions without type declarations
+ do not use return with a value.
+
+ * history.c: history_expand () has new variable which is the
+ characters to ignore immediately following history_expansion_char.
+
+Sun Jul 16 08:14:00 1989 Brian Fox (bfox at aurel)
+
+ * rl_prep_terminal ()
+ BSD version turns off C-s, C-q, C-y, C-v.
+
+ * readline.c -- rl_prep_terminal ()
+ SYSV version hacks readline_echoing_p.
+ BSD version turns on passing of the 8th bit for the duration
+ of reading the line.
+
+Tue Jul 11 06:25:01 1989 Brian Fox (bfox at aurel)
+
+ * readline.c: new variable rl_tilde_expander.
+ If non-null, this contains the address of a function to call if
+ the standard meaning for expanding a tilde fails. The function is
+ called with the text sans tilde (as in "foo"), and returns a
+ malloc()'ed string which is the expansion, or a NULL pointer if
+ there is no expansion.
+
+ * readline.h - new file chardefs.h
+ Separates things that only readline.c needs from the standard
+ header file publishing interesting things about readline.
+
+ * readline.c:
+ readline_default_bindings () now looks at terminal chararacters
+ and binds those as well.
+
+Wed Jun 28 20:20:51 1989 Brian Fox (bfox at aurel)
+
+ * Made readline and history into independent libraries.
+
diff --git a/contrib/libreadline/Makefile.in b/contrib/libreadline/Makefile.in
new file mode 100644
index 0000000..c5ac183
--- /dev/null
+++ b/contrib/libreadline/Makefile.in
@@ -0,0 +1,192 @@
+## -*- text -*- ####################################################
+# #
+# Makefile for the GNU Readline and History Libraries. #
+# #
+####################################################################
+
+srcdir = @srcdir@
+VPATH = .:@srcdir@
+topdir = @top_srcdir@
+BUILD_DIR = @BUILD_DIR@
+
+INSTALL = @INSTALL@
+INSTALL_PROGRAM = @INSTALL_PROGRAM@
+INSTALL_DATA = @INSTALL_DATA@
+
+CC = @CC@
+RANLIB = @RANLIB@
+AR = @AR@
+RM = rm -f
+CP = cp
+MV = mv
+
+# See the file STANDALONE for the -D defines that readline understands
+
+CFLAGS = @CFLAGS@
+LOCAL_CFLAGS = @LOCAL_CFLAGS@
+CPPFLAGS = @CPPFLAGS@
+LDFLAGS = @LDFLAGS@
+
+DEFS = @DEFS@
+
+INCLUDES = -I. -I$(BUILD_DIR) -I$(topdir) -I$(topdir)/lib
+
+CCFLAGS = $(DEFS) $(APP_CFLAGS) $(CPPFLAGS) ${INCLUDES} $(LOCAL_CFLAGS) $(CFLAGS)
+
+# Here is a rule for making .o files from .c files that doesn't force
+# the type of the machine (like -sun3) into the flags.
+.c.o:
+ $(CC) -c $(CCFLAGS) $<
+
+# The name of the main library target.
+LIBRARY_NAME = libreadline.a
+
+# The C code source files for this library.
+CSOURCES = $(srcdir)/readline.c $(srcdir)/funmap.c $(srcdir)/keymaps.c \
+ $(srcdir)/vi_mode.c $(srcdir)/parens.c $(srcdir)/rltty.c \
+ $(srcdir)/complete.c $(srcdir)/bind.c $(srcdir)/isearch.c \
+ $(srcdir)/display.c $(srcdir)/signals.c $(srcdir)/emacs_keymap.c \
+ $(srcdir)/vi_keymap.c $(srcdir)/util.c $(srcdir)/kill.c \
+ $(srcdir)/undo.c $(srcdir)/macro.c $(srcdir)/input.c \
+ $(srcdir)/callback.c $(srcdir)/terminal.c $(srcdir)/xmalloc.c \
+ $(srcdir)/history.c $(srcdir)/histsearch.c $(srcdir)/histexpand.c \
+ $(srcdir)/histfile.c $(srcdir)/nls.c \
+ $(srcdir)/tilde.c \
+
+# The header files for this library.
+HSOURCES = readline.h rldefs.h chardefs.h keymaps.h history.h histlib.h \
+ posixstat.h tilde.h rlconf.h tcap.h
+
+HISTOBJ = history.o histexpand.o histfile.o histsearch.o
+TILDEOBJ= tilde.o
+OBJECTS = readline.o vi_mode.o funmap.o keymaps.o parens.o search.o \
+ rltty.o complete.o bind.o isearch.o display.o signals.o \
+ util.o kill.o undo.o macro.o input.o callback.o terminal.o \
+ nls.o xmalloc.o \
+ $(HISTOBJ) $(TILDEOBJ)
+
+# The texinfo files which document this library.
+DOCSOURCE = doc/rlman.texinfo doc/rltech.texinfo doc/rluser.texinfo
+DOCOBJECT = doc/readline.dvi
+DOCSUPPORT = doc/Makefile
+DOCUMENTATION = $(DOCSOURCE) $(DOCOBJECT) $(DOCSUPPORT)
+
+SUPPORT = Makefile ChangeLog $(DOCSUPPORT) examples/[-a-z.]*
+
+SOURCES = $(CSOURCES) $(HSOURCES) $(DOCSOURCE)
+
+THINGS_TO_TAR = $(SOURCES) $(SUPPORT)
+
+INSTALLED_HEADERS = readline.h chardefs.h keymaps.h history.h tilde.h
+
+##########################################################################
+
+all: libreadline.a libhistory.a
+
+libreadline.a: $(OBJECTS)
+ $(RM) -f $@
+ $(AR) cr $@ $(OBJECTS)
+ -test -n "$(RANLIB)" && $(RANLIB) $@
+
+libhistory.a: $(HISTOBJ) xmalloc.o
+ $(RM) -f $@
+ $(AR) cr $@ $(HISTOBJ) xmalloc.o
+ -test -n "$(RANLIB)" && $(RANLIB) $@
+
+documentation: force
+ test -d doc || mkdir doc
+ -( cd doc && $(MAKE) $(MFLAGS) )
+
+force:
+
+# The rule for 'includes' is written funny so that the if statement
+# always returns TRUE unless there really was an error installing the
+# include files.
+install: installdirs libreadline.a
+ for file in $(INSTALLED_HEADERS) ; do \
+ $(INSTALL_DATA) $(srcdir)/$$file $(includedir)/readline ; \
+ done
+ -${MV} $(libdir)/libreadline.a $(libdir)/libreadline.old
+ ${INSTALL_DATA} libreadline.a $(libdir)/libreadline.a
+ -test -n "$(RANLIB)" && $(RANLIB) -t $(bindir)/libreadline.a
+
+installdirs: $(topdir)/support/mkdirs
+ $(SHELL) $(topdir)/support/mkdirs $(includedir) \
+ $(includedir)/readline $(libdir) $(infodir) $(man3dir)
+
+uninstall:
+ cd $(includedir)/readline && ${RM} -f ${INSTALLED_HEADERS}
+ cd $(libdir) && ${RM} -f libreadline.a libreadline.old
+
+tags: force
+ etags $(CSOURCES) $(HSOURCES)
+
+TAGS: force
+ ctags -x $(CSOURCES) $(HSOURCES) > $@
+
+readline: readline.h rldefs.h chardefs.h
+readline: $(OBJECTS)
+ $(CC) $(CFLAGS) $(CPPFLAGS) $(READLINE_DEFINES) \
+ $(LOCAL_INCLUDES) -DTEST -o readline readline.c vi_mode.o funmap.o \
+ keymaps.o -ltermcap
+
+clean: force
+ $(RM) $(OBJECTS) *.a
+ -( cd doc && $(MAKE) $(MFLAGS) $@ )
+
+distclean realclean maintainer-clean: clean
+ -( cd doc && $(MAKE) $(MFLAGS) $@ )
+ $(RM) Makefile
+
+mostlyclean: clean
+ -( cd doc && $(MAKE) $(MFLAGS) $@ )
+
+# Dependencies
+readline.o: readline.c readline.h rldefs.h rlconf.h chardefs.h tcap.h
+readline.o: keymaps.h history.h
+vi_mode.o: rldefs.h rlconf.h readline.h history.h
+funmap.o: funmap.c readline.h rlconf.h
+keymaps.o: keymaps.c emacs_keymap.c vi_keymap.c keymaps.h chardefs.h rlconf.h
+history.o: history.h histlib.h
+histexpand.o: history.h histlib.h
+histsearch.o: history.h histlib.h
+histfile.o: history.h histlib.h
+isearch.o: readline.h history.h
+search.o: readline.h history.h
+display.o: readline.h history.h rldefs.h rlconf.h tcap.h
+complete.o: readline.h rldefs.h rlconf.h posixdir.h posixstat.h
+rltty.o: rldefs.h rlconf.h readline.h rltty.h
+bind.o: rldefs.h rlconf.h readline.h history.h
+signals.o: rldefs.h rlconf.h readline.h history.h
+parens.o: readline.h
+kill.o: rldefs.h rlconf.h readline.h history.h
+macro.o: rldefs.h rlconf.h readline.h history.h
+undo.o: rldefs.h rlconf.h readline.h history.h
+input.o: rldefs.h rlconf.h readline.h history.h
+callback.o: rlconf.h rldefs.h readline.h
+terminal.o: rlconf.h rldefs.h readline.h tcap.h history.h
+
+bind.o: $(BUILD_DIR)/config.h
+callback.o: $(BUILD_DIR)/config.h
+complete.o: $(BUILD_DIR)/config.h
+display.o: $(BUILD_DIR)/config.h
+funmap.o: $(BUILD_DIR)/config.h
+histexpand.o: $(BUILD_DIR)/config.h
+histfile.o: $(BUILD_DIR)/config.h
+history.o: $(BUILD_DIR)/config.h
+histsearch.o: $(BUILD_DIR)/config.h
+input.o: $(BUILD_DIR)/config.h
+isearch.o: $(BUILD_DIR)/config.h
+keymaps.o: $(BUILD_DIR)/config.h
+kill.o: $(BUILD_DIR)/config.h
+macro.o: $(BUILD_DIR)/config.h
+parens.o: $(BUILD_DIR)/config.h
+readline.o: $(BUILD_DIR)/config.h
+rltty.o: $(BUILD_DIR)/config.h
+search.o: $(BUILD_DIR)/config.h
+signals.o: $(BUILD_DIR)/config.h
+tilde.o: $(BUILD_DIR)/config.h
+undo.o: $(BUILD_DIR)/config.h
+util.o: $(BUILD_DIR)/config.h
+vi_mode.o: $(BUILD_DIR)/config.h
+xmalloc.o: $(BUILD_DIR)/config.h
diff --git a/contrib/libreadline/README b/contrib/libreadline/README
new file mode 100644
index 0000000..131471c
--- /dev/null
+++ b/contrib/libreadline/README
@@ -0,0 +1,6 @@
+This is the distribution of the Gnu Readline library. See the file
+STANDALONE for a description of the #defines that can be passed via
+the makefile to build readline on different systems.
+
+The file rlconf.h contains defines that enable and disable certain
+readline features.
diff --git a/contrib/libreadline/STANDALONE b/contrib/libreadline/STANDALONE
new file mode 100644
index 0000000..f999e8d
--- /dev/null
+++ b/contrib/libreadline/STANDALONE
@@ -0,0 +1,32 @@
+This is a description of C preprocessor defines that readline accepts.
+Most are passed in from the parent `make'; e.g. from the bash source
+directory.
+
+NO_SYS_FILE <sys/file.h> is not present
+HAVE_UNISTD_H <unistd.h> exists
+HAVE_STDLIB_H <stdlib.h> exists
+HAVE_VARARGS_H <varargs.h> exists and is usable
+HAVE_STRING_H <string.h> exists
+HAVE_ALLOCA_H <alloca.h> exists and is needed for alloca()
+HAVE_ALLOCA alloca(3) or a define for it exists
+PRAGMA_ALLOCA use of alloca() requires a #pragma, as in AIX 3.x
+VOID_SIGHANDLER signal handlers are void functions
+HAVE_DIRENT_H <dirent.h> exists and is usable
+HAVE_SYS_PTEM_H <sys/ptem.h> exists
+HAVE_SYS_PTE_H <sys/pte.h> exists
+HAVE_SYS_STREAM_H <sys/stream.h> exists
+HAVE_SYS_SELECT_H <sys/select.h> exists
+
+System-specific options:
+
+GWINSZ_IN_SYS_IOCTL need to include <sys/ioctl.h> for TIOCGWINSZ
+HAVE_GETPW_DECLS the getpw* functions are declared in <pwd.h> and cannot
+ be redeclared without compiler errors
+HAVE_STRCASECMP the strcasecmp and strncasecmp functions are available
+
+USG Running a variant of System V
+USGr3 Running System V.3
+XENIX_22 Xenix 2.2
+Linux Linux
+CRAY running a recent version of Cray UNICOS
+SunOS4 Running SunOS 4.x
diff --git a/contrib/libreadline/ansi_stdlib.h b/contrib/libreadline/ansi_stdlib.h
new file mode 100644
index 0000000..52339da
--- /dev/null
+++ b/contrib/libreadline/ansi_stdlib.h
@@ -0,0 +1,41 @@
+/* ansi_stdlib.h -- An ANSI Standard stdlib.h. */
+/* A minimal stdlib.h containing extern declarations for those functions
+ that bash uses. */
+
+/* Copyright (C) 1993 Free Software Foundation, Inc.
+
+ This file is part of GNU Bash, the Bourne Again SHell.
+
+ Bash is free software; you can redistribute it and/or modify it under
+ the terms of the GNU General Public License as published by the Free
+ Software Foundation; either version 2, or (at your option) any later
+ version.
+
+ Bash is distributed in the hope that it will be useful, but WITHOUT ANY
+ WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ for more details.
+
+ You should have received a copy of the GNU General Public License along
+ with Bash; see the file COPYING. If not, write to the Free Software
+ Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
+
+#if !defined (_STDLIB_H_)
+#define _STDLIB_H_ 1
+
+/* String conversion functions. */
+extern int atoi ();
+extern long int atol ();
+
+/* Memory allocation functions. */
+extern char *malloc ();
+extern char *realloc ();
+extern void free ();
+
+/* Other miscellaneous functions. */
+extern void abort ();
+extern void exit ();
+extern char *getenv ();
+extern void qsort ();
+
+#endif /* _STDLIB_H */
diff --git a/contrib/libreadline/bind.c b/contrib/libreadline/bind.c
new file mode 100644
index 0000000..bd899ca
--- /dev/null
+++ b/contrib/libreadline/bind.c
@@ -0,0 +1,1710 @@
+/* bind.c -- key binding and startup file support for the readline library. */
+
+/* Copyright (C) 1987, 1989, 1992 Free Software Foundation, Inc.
+
+ This file is part of the GNU Readline Library, a library for
+ reading lines of text with interactive input and history editing.
+
+ The GNU Readline Library is free software; you can redistribute it
+ and/or modify it under the terms of the GNU General Public License
+ as published by the Free Software Foundation; either version 1, or
+ (at your option) any later version.
+
+ The GNU Readline Library is distributed in the hope that it will be
+ useful, but WITHOUT ANY WARRANTY; without even the implied warranty
+ of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ The GNU General Public License is often shipped with GNU software, and
+ is generally kept in a file called COPYING or LICENSE. If you do not
+ have a copy of the license, write to the Free Software Foundation,
+ 675 Mass Ave, Cambridge, MA 02139, USA. */
+#define READLINE_LIBRARY
+
+#if defined (HAVE_CONFIG_H)
+# include <config.h>
+#endif
+
+#include <stdio.h>
+#include <sys/types.h>
+#include <fcntl.h>
+#if defined (HAVE_SYS_FILE_H)
+# include <sys/file.h>
+#endif /* HAVE_SYS_FILE_H */
+
+#if defined (HAVE_UNISTD_H)
+# include <unistd.h>
+#endif /* HAVE_UNISTD_H */
+
+#if defined (HAVE_STDLIB_H)
+# include <stdlib.h>
+#else
+# include "ansi_stdlib.h"
+#endif /* HAVE_STDLIB_H */
+
+#include <signal.h>
+#include <errno.h>
+
+#if !defined (errno)
+extern int errno;
+#endif /* !errno */
+
+#include "posixstat.h"
+
+/* System-specific feature definitions and include files. */
+#include "rldefs.h"
+
+/* Some standard library routines. */
+#include "readline.h"
+#include "history.h"
+
+#if !defined (strchr) && !defined (__STDC__)
+extern char *strchr (), *strrchr ();
+#endif /* !strchr && !__STDC__ */
+
+extern int _rl_horizontal_scroll_mode;
+extern int _rl_mark_modified_lines;
+extern int _rl_bell_preference;
+extern int _rl_meta_flag;
+extern int _rl_convert_meta_chars_to_ascii;
+extern int _rl_output_meta_chars;
+extern int _rl_complete_show_all;
+extern int _rl_complete_mark_directories;
+extern int _rl_enable_keypad;
+#if defined (PAREN_MATCHING)
+extern int rl_blink_matching_paren;
+#endif /* PAREN_MATCHING */
+#if defined (VISIBLE_STATS)
+extern int rl_visible_stats;
+#endif /* VISIBLE_STATS */
+extern int rl_complete_with_tilde_expansion;
+extern int rl_completion_query_items;
+extern int rl_inhibit_completion;
+extern char *_rl_comment_begin;
+
+extern int rl_explicit_arg;
+extern int rl_editing_mode;
+extern unsigned char _rl_parsing_conditionalized_out;
+extern Keymap _rl_keymap;
+
+extern char *possible_control_prefixes[], *possible_meta_prefixes[];
+
+extern char **rl_funmap_names ();
+extern int rl_add_funmap_entry ();
+
+extern char *_rl_strindex ();
+
+/* Variables exported by this file. */
+Keymap rl_binding_keymap;
+
+/* Forward declarations */
+void rl_set_keymap_from_edit_mode ();
+
+static int glean_key_from_name ();
+static int substring_member_of_array ();
+
+extern char *xmalloc (), *xrealloc ();
+
+/* **************************************************************** */
+/* */
+/* Binding keys */
+/* */
+/* **************************************************************** */
+
+/* rl_add_defun (char *name, Function *function, int key)
+ Add NAME to the list of named functions. Make FUNCTION be the function
+ that gets called. If KEY is not -1, then bind it. */
+int
+rl_add_defun (name, function, key)
+ char *name;
+ Function *function;
+ int key;
+{
+ if (key != -1)
+ rl_bind_key (key, function);
+ rl_add_funmap_entry (name, function);
+ return 0;
+}
+
+/* Bind KEY to FUNCTION. Returns non-zero if KEY is out of range. */
+int
+rl_bind_key (key, function)
+ int key;
+ Function *function;
+{
+ if (key < 0)
+ return (key);
+
+ if (META_CHAR (key) && _rl_convert_meta_chars_to_ascii)
+ {
+ if (_rl_keymap[ESC].type == ISKMAP)
+ {
+ Keymap escmap;
+
+ escmap = FUNCTION_TO_KEYMAP (_rl_keymap, ESC);
+ key = UNMETA (key);
+ escmap[key].type = ISFUNC;
+ escmap[key].function = function;
+ return (0);
+ }
+ return (key);
+ }
+
+ _rl_keymap[key].type = ISFUNC;
+ _rl_keymap[key].function = function;
+ rl_binding_keymap = _rl_keymap;
+ return (0);
+}
+
+/* Bind KEY to FUNCTION in MAP. Returns non-zero in case of invalid
+ KEY. */
+int
+rl_bind_key_in_map (key, function, map)
+ int key;
+ Function *function;
+ Keymap map;
+{
+ int result;
+ Keymap oldmap;
+
+ oldmap = _rl_keymap;
+ _rl_keymap = map;
+ result = rl_bind_key (key, function);
+ _rl_keymap = oldmap;
+ return (result);
+}
+
+/* Make KEY do nothing in the currently selected keymap.
+ Returns non-zero in case of error. */
+int
+rl_unbind_key (key)
+ int key;
+{
+ return (rl_bind_key (key, (Function *)NULL));
+}
+
+/* Make KEY do nothing in MAP.
+ Returns non-zero in case of error. */
+int
+rl_unbind_key_in_map (key, map)
+ int key;
+ Keymap map;
+{
+ return (rl_bind_key_in_map (key, (Function *)NULL, map));
+}
+
+/* Bind the key sequence represented by the string KEYSEQ to
+ FUNCTION. This makes new keymaps as necessary. The initial
+ place to do bindings is in MAP. */
+int
+rl_set_key (keyseq, function, map)
+ char *keyseq;
+ Function *function;
+ Keymap map;
+{
+ return (rl_generic_bind (ISFUNC, keyseq, function, map));
+}
+
+/* Bind the key sequence represented by the string KEYSEQ to
+ the string of characters MACRO. This makes new keymaps as
+ necessary. The initial place to do bindings is in MAP. */
+int
+rl_macro_bind (keyseq, macro, map)
+ char *keyseq, *macro;
+ Keymap map;
+{
+ char *macro_keys;
+ int macro_keys_len;
+
+ macro_keys = (char *)xmalloc ((2 * strlen (macro)) + 1);
+
+ if (rl_translate_keyseq (macro, macro_keys, &macro_keys_len))
+ {
+ free (macro_keys);
+ return -1;
+ }
+ rl_generic_bind (ISMACR, keyseq, macro_keys, map);
+ return 0;
+}
+
+/* Bind the key sequence represented by the string KEYSEQ to
+ the arbitrary pointer DATA. TYPE says what kind of data is
+ pointed to by DATA, right now this can be a function (ISFUNC),
+ a macro (ISMACR), or a keymap (ISKMAP). This makes new keymaps
+ as necessary. The initial place to do bindings is in MAP. */
+int
+rl_generic_bind (type, keyseq, data, map)
+ int type;
+ char *keyseq, *data;
+ Keymap map;
+{
+ char *keys;
+ int keys_len;
+ register int i;
+
+ /* If no keys to bind to, exit right away. */
+ if (!keyseq || !*keyseq)
+ {
+ if (type == ISMACR)
+ free (data);
+ return -1;
+ }
+
+ keys = xmalloc (1 + (2 * strlen (keyseq)));
+
+ /* Translate the ASCII representation of KEYSEQ into an array of
+ characters. Stuff the characters into KEYS, and the length of
+ KEYS into KEYS_LEN. */
+ if (rl_translate_keyseq (keyseq, keys, &keys_len))
+ {
+ free (keys);
+ return -1;
+ }
+
+ /* Bind keys, making new keymaps as necessary. */
+ for (i = 0; i < keys_len; i++)
+ {
+ int ic = (int) ((unsigned char)keys[i]);
+
+ if (_rl_convert_meta_chars_to_ascii && META_CHAR (ic))
+ {
+ ic = UNMETA (ic);
+ if (map[ESC].type == ISKMAP)
+ map = FUNCTION_TO_KEYMAP (map, ESC);
+ }
+
+ if ((i + 1) < keys_len)
+ {
+ if (map[ic].type != ISKMAP)
+ {
+ if (map[ic].type == ISMACR)
+ free ((char *)map[ic].function);
+
+ map[ic].type = ISKMAP;
+ map[ic].function = KEYMAP_TO_FUNCTION (rl_make_bare_keymap());
+ }
+ map = FUNCTION_TO_KEYMAP (map, ic);
+ }
+ else
+ {
+ if (map[ic].type == ISMACR)
+ free ((char *)map[ic].function);
+
+ map[ic].function = KEYMAP_TO_FUNCTION (data);
+ map[ic].type = type;
+ }
+
+ rl_binding_keymap = map;
+ }
+ free (keys);
+ return 0;
+}
+
+/* Translate the ASCII representation of SEQ, stuffing the values into ARRAY,
+ an array of characters. LEN gets the final length of ARRAY. Return
+ non-zero if there was an error parsing SEQ. */
+int
+rl_translate_keyseq (seq, array, len)
+ char *seq, *array;
+ int *len;
+{
+ register int i, c, l;
+
+ for (i = l = 0; c = seq[i]; i++)
+ {
+ if (c == '\\')
+ {
+ c = seq[++i];
+
+ if (c == 0)
+ break;
+
+ if (((c == 'C' || c == 'M') && seq[i + 1] == '-') || (c == 'e'))
+ {
+ /* Handle special case of backwards define. */
+ if (strncmp (&seq[i], "C-\\M-", 5) == 0)
+ {
+ array[l++] = ESC;
+ i += 5;
+ array[l++] = CTRL (_rl_to_upper (seq[i]));
+ if (!seq[i])
+ i--;
+ continue;
+ }
+
+ switch (c)
+ {
+ case 'M':
+ i++;
+ array[l++] = ESC; /* XXX */
+ break;
+
+ case 'C':
+ i += 2;
+ /* Special hack for C-?... */
+ array[l++] = (seq[i] == '?') ? RUBOUT : CTRL (_rl_to_upper (seq[i]));
+ break;
+
+ case 'e':
+ array[l++] = ESC;
+ }
+
+ continue;
+ }
+ }
+ array[l++] = c;
+ }
+
+ *len = l;
+ array[l] = '\0';
+ return (0);
+}
+
+char *
+rl_untranslate_keyseq (seq)
+ int seq;
+{
+ static char kseq[16];
+ int i, c;
+
+ i = 0;
+ c = seq;
+ if (META_CHAR (c))
+ {
+ kseq[i++] = '\\';
+ kseq[i++] = 'M';
+ kseq[i++] = '-';
+ c = UNMETA (c);
+ }
+ else if (CTRL_CHAR (c))
+ {
+ kseq[i++] = '\\';
+ kseq[i++] = 'C';
+ kseq[i++] = '-';
+ c = UNCTRL (c);
+ }
+ else if (c == RUBOUT)
+ {
+ kseq[i++] = '\\';
+ kseq[i++] = 'C';
+ kseq[i++] = '-';
+ c = '?';
+ }
+
+ if (c == ESC)
+ {
+ kseq[i++] = '\\';
+ kseq[i++] = 'e';
+ }
+ else if (c == '\\' || c == '"')
+ {
+ kseq[i++] = '\\';
+ }
+
+ kseq[i++] = (unsigned char) c;
+ kseq[i] = '\0';
+ return kseq;
+}
+
+/* Return a pointer to the function that STRING represents.
+ If STRING doesn't have a matching function, then a NULL pointer
+ is returned. */
+Function *
+rl_named_function (string)
+ char *string;
+{
+ register int i;
+
+ rl_initialize_funmap ();
+
+ for (i = 0; funmap[i]; i++)
+ if (_rl_stricmp (funmap[i]->name, string) == 0)
+ return (funmap[i]->function);
+ return ((Function *)NULL);
+}
+
+/* Return the function (or macro) definition which would be invoked via
+ KEYSEQ if executed in MAP. If MAP is NULL, then the current keymap is
+ used. TYPE, if non-NULL, is a pointer to an int which will receive the
+ type of the object pointed to. One of ISFUNC (function), ISKMAP (keymap),
+ or ISMACR (macro). */
+Function *
+rl_function_of_keyseq (keyseq, map, type)
+ char *keyseq;
+ Keymap map;
+ int *type;
+{
+ register int i;
+
+ if (!map)
+ map = _rl_keymap;
+
+ for (i = 0; keyseq && keyseq[i]; i++)
+ {
+ int ic = keyseq[i];
+
+ if (META_CHAR (ic) && _rl_convert_meta_chars_to_ascii)
+ {
+ if (map[ESC].type != ISKMAP)
+ {
+ if (type)
+ *type = map[ESC].type;
+
+ return (map[ESC].function);
+ }
+ else
+ {
+ map = FUNCTION_TO_KEYMAP (map, ESC);
+ ic = UNMETA (ic);
+ }
+ }
+
+ if (map[ic].type == ISKMAP)
+ {
+ /* If this is the last key in the key sequence, return the
+ map. */
+ if (!keyseq[i + 1])
+ {
+ if (type)
+ *type = ISKMAP;
+
+ return (map[ic].function);
+ }
+ else
+ map = FUNCTION_TO_KEYMAP (map, ic);
+ }
+ else
+ {
+ if (type)
+ *type = map[ic].type;
+
+ return (map[ic].function);
+ }
+ }
+ return ((Function *) NULL);
+}
+
+/* The last key bindings file read. */
+static char *last_readline_init_file = (char *)NULL;
+
+/* The file we're currently reading key bindings from. */
+static char *current_readline_init_file;
+static int current_readline_init_lineno;
+
+/* Re-read the current keybindings file. */
+int
+rl_re_read_init_file (count, ignore)
+ int count, ignore;
+{
+ int r;
+ r = rl_read_init_file ((char *)NULL);
+ rl_set_keymap_from_edit_mode ();
+ return r;
+}
+
+/* Do key bindings from a file. If FILENAME is NULL it defaults
+ to the first non-null filename from this list:
+ 1. the filename used for the previous call
+ 2. the value of the shell variable `INPUTRC'
+ 3. ~/.inputrc
+ If the file existed and could be opened and read, 0 is returned,
+ otherwise errno is returned. */
+int
+rl_read_init_file (filename)
+ char *filename;
+{
+ register int i;
+ char *buffer, *openname, *line, *end;
+ struct stat finfo;
+ int file;
+
+ /* Default the filename. */
+ if (filename == 0)
+ {
+ filename = last_readline_init_file;
+ if (filename == 0)
+ filename = getenv ("INPUTRC");
+ if (filename == 0)
+ filename = DEFAULT_INPUTRC;
+ }
+
+ if (*filename == 0)
+ filename = DEFAULT_INPUTRC;
+
+ current_readline_init_file = filename;
+ openname = tilde_expand (filename);
+
+ if ((stat (openname, &finfo) < 0) ||
+ (file = open (openname, O_RDONLY, 0666)) < 0)
+ {
+ free (openname);
+ return (errno);
+ }
+ else
+ free (openname);
+
+ if (filename != last_readline_init_file)
+ {
+ if (last_readline_init_file)
+ free (last_readline_init_file);
+
+ last_readline_init_file = savestring (filename);
+ }
+
+ /* Read the file into BUFFER. */
+ buffer = (char *)xmalloc ((int)finfo.st_size + 1);
+ i = read (file, buffer, finfo.st_size);
+ close (file);
+
+ if (i != finfo.st_size)
+ return (errno);
+
+ /* Loop over the lines in the file. Lines that start with `#' are
+ comments; all other lines are commands for readline initialization. */
+ current_readline_init_lineno = 1;
+ line = buffer;
+ end = buffer + finfo.st_size;
+ while (line < end)
+ {
+ /* Find the end of this line. */
+ for (i = 0; line + i != end && line[i] != '\n'; i++);
+
+ /* Mark end of line. */
+ line[i] = '\0';
+
+ /* Skip leading whitespace. */
+ while (*line && whitespace (*line))
+ {
+ line++;
+ i--;
+ }
+
+ /* If the line is not a comment, then parse it. */
+ if (*line && *line != '#')
+ rl_parse_and_bind (line);
+
+ /* Move to the next line. */
+ line += i + 1;
+ current_readline_init_lineno++;
+ }
+ free (buffer);
+ return (0);
+}
+
+static void
+_rl_init_file_error (msg)
+ char *msg;
+{
+ fprintf (stderr, "readline: %s: line %d: %s\n", current_readline_init_file,
+ current_readline_init_lineno,
+ msg);
+}
+
+/* **************************************************************** */
+/* */
+/* Parser Directives */
+/* */
+/* **************************************************************** */
+
+/* Conditionals. */
+
+/* Calling programs set this to have their argv[0]. */
+char *rl_readline_name = "other";
+
+/* Stack of previous values of parsing_conditionalized_out. */
+static unsigned char *if_stack = (unsigned char *)NULL;
+static int if_stack_depth;
+static int if_stack_size;
+
+/* Push _rl_parsing_conditionalized_out, and set parser state based
+ on ARGS. */
+static int
+parser_if (args)
+ char *args;
+{
+ register int i;
+
+ /* Push parser state. */
+ if (if_stack_depth + 1 >= if_stack_size)
+ {
+ if (!if_stack)
+ if_stack = (unsigned char *)xmalloc (if_stack_size = 20);
+ else
+ if_stack = (unsigned char *)xrealloc (if_stack, if_stack_size += 20);
+ }
+ if_stack[if_stack_depth++] = _rl_parsing_conditionalized_out;
+
+ /* If parsing is turned off, then nothing can turn it back on except
+ for finding the matching endif. In that case, return right now. */
+ if (_rl_parsing_conditionalized_out)
+ return 0;
+
+ /* Isolate first argument. */
+ for (i = 0; args[i] && !whitespace (args[i]); i++);
+
+ if (args[i])
+ args[i++] = '\0';
+
+ /* Handle "if term=foo" and "if mode=emacs" constructs. If this
+ isn't term=foo, or mode=emacs, then check to see if the first
+ word in ARGS is the same as the value stored in rl_readline_name. */
+ if (rl_terminal_name && _rl_strnicmp (args, "term=", 5) == 0)
+ {
+ char *tem, *tname;
+
+ /* Terminals like "aaa-60" are equivalent to "aaa". */
+ tname = savestring (rl_terminal_name);
+ tem = strchr (tname, '-');
+ if (tem)
+ *tem = '\0';
+
+ /* Test the `long' and `short' forms of the terminal name so that
+ if someone has a `sun-cmd' and does not want to have bindings
+ that will be executed if the terminal is a `sun', they can put
+ `$if term=sun-cmd' into their .inputrc. */
+ _rl_parsing_conditionalized_out = _rl_stricmp (args + 5, tname) &&
+ _rl_stricmp (args + 5, rl_terminal_name);
+ free (tname);
+ }
+#if defined (VI_MODE)
+ else if (_rl_strnicmp (args, "mode=", 5) == 0)
+ {
+ int mode;
+
+ if (_rl_stricmp (args + 5, "emacs") == 0)
+ mode = emacs_mode;
+ else if (_rl_stricmp (args + 5, "vi") == 0)
+ mode = vi_mode;
+ else
+ mode = no_mode;
+
+ _rl_parsing_conditionalized_out = mode != rl_editing_mode;
+ }
+#endif /* VI_MODE */
+ /* Check to see if the first word in ARGS is the same as the
+ value stored in rl_readline_name. */
+ else if (_rl_stricmp (args, rl_readline_name) == 0)
+ _rl_parsing_conditionalized_out = 0;
+ else
+ _rl_parsing_conditionalized_out = 1;
+ return 0;
+}
+
+/* Invert the current parser state if there is anything on the stack. */
+static int
+parser_else (args)
+ char *args;
+{
+ register int i;
+
+ if (!if_stack_depth)
+ {
+ /* Error message? */
+ return 0;
+ }
+
+ /* Check the previous (n - 1) levels of the stack to make sure that
+ we haven't previously turned off parsing. */
+ for (i = 0; i < if_stack_depth - 1; i++)
+ if (if_stack[i] == 1)
+ return 0;
+
+ /* Invert the state of parsing if at top level. */
+ _rl_parsing_conditionalized_out = !_rl_parsing_conditionalized_out;
+ return 0;
+}
+
+/* Terminate a conditional, popping the value of
+ _rl_parsing_conditionalized_out from the stack. */
+static int
+parser_endif (args)
+ char *args;
+{
+ if (if_stack_depth)
+ _rl_parsing_conditionalized_out = if_stack[--if_stack_depth];
+ else
+ {
+ /* *** What, no error message? *** */
+ }
+ return 0;
+}
+
+/* Associate textual names with actual functions. */
+static struct {
+ char *name;
+ Function *function;
+} parser_directives [] = {
+ { "if", parser_if },
+ { "endif", parser_endif },
+ { "else", parser_else },
+ { (char *)0x0, (Function *)0x0 }
+};
+
+/* Handle a parser directive. STATEMENT is the line of the directive
+ without any leading `$'. */
+static int
+handle_parser_directive (statement)
+ char *statement;
+{
+ register int i;
+ char *directive, *args;
+
+ /* Isolate the actual directive. */
+
+ /* Skip whitespace. */
+ for (i = 0; whitespace (statement[i]); i++);
+
+ directive = &statement[i];
+
+ for (; statement[i] && !whitespace (statement[i]); i++);
+
+ if (statement[i])
+ statement[i++] = '\0';
+
+ for (; statement[i] && whitespace (statement[i]); i++);
+
+ args = &statement[i];
+
+ /* Lookup the command, and act on it. */
+ for (i = 0; parser_directives[i].name; i++)
+ if (_rl_stricmp (directive, parser_directives[i].name) == 0)
+ {
+ (*parser_directives[i].function) (args);
+ return (0);
+ }
+
+ /* *** Should an error message be output? */
+ return (1);
+}
+
+/* Read the binding command from STRING and perform it.
+ A key binding command looks like: Keyname: function-name\0,
+ a variable binding command looks like: set variable value.
+ A new-style keybinding looks like "\C-x\C-x": exchange-point-and-mark. */
+int
+rl_parse_and_bind (string)
+ char *string;
+{
+ char *funname, *kname;
+ register int c, i;
+ int key, equivalency;
+
+ while (string && whitespace (*string))
+ string++;
+
+ if (!string || !*string || *string == '#')
+ return 0;
+
+ /* If this is a parser directive, act on it. */
+ if (*string == '$')
+ {
+ handle_parser_directive (&string[1]);
+ return 0;
+ }
+
+ /* If we aren't supposed to be parsing right now, then we're done. */
+ if (_rl_parsing_conditionalized_out)
+ return 0;
+
+ i = 0;
+ /* If this keyname is a complex key expression surrounded by quotes,
+ advance to after the matching close quote. This code allows the
+ backslash to quote characters in the key expression. */
+ if (*string == '"')
+ {
+ int passc = 0;
+
+ for (i = 1; c = string[i]; i++)
+ {
+ if (passc)
+ {
+ passc = 0;
+ continue;
+ }
+
+ if (c == '\\')
+ {
+ passc++;
+ continue;
+ }
+
+ if (c == '"')
+ break;
+ }
+ /* If we didn't find a closing quote, abort the line. */
+ if (string[i] == '\0')
+ {
+ _rl_init_file_error ("no closing `\"' in key binding");
+ return 1;
+ }
+ }
+
+ /* Advance to the colon (:) or whitespace which separates the two objects. */
+ for (; (c = string[i]) && c != ':' && c != ' ' && c != '\t'; i++ );
+
+ equivalency = (c == ':' && string[i + 1] == '=');
+
+ /* Mark the end of the command (or keyname). */
+ if (string[i])
+ string[i++] = '\0';
+
+ /* If doing assignment, skip the '=' sign as well. */
+ if (equivalency)
+ string[i++] = '\0';
+
+ /* If this is a command to set a variable, then do that. */
+ if (_rl_stricmp (string, "set") == 0)
+ {
+ char *var = string + i;
+ char *value;
+
+ /* Make VAR point to start of variable name. */
+ while (*var && whitespace (*var)) var++;
+
+ /* Make value point to start of value string. */
+ value = var;
+ while (*value && !whitespace (*value)) value++;
+ if (*value)
+ *value++ = '\0';
+ while (*value && whitespace (*value)) value++;
+
+ rl_variable_bind (var, value);
+ return 0;
+ }
+
+ /* Skip any whitespace between keyname and funname. */
+ for (; string[i] && whitespace (string[i]); i++);
+ funname = &string[i];
+
+ /* Now isolate funname.
+ For straight function names just look for whitespace, since
+ that will signify the end of the string. But this could be a
+ macro definition. In that case, the string is quoted, so skip
+ to the matching delimiter. We allow the backslash to quote the
+ delimiter characters in the macro body. */
+ /* This code exists to allow whitespace in macro expansions, which
+ would otherwise be gobbled up by the next `for' loop.*/
+ /* XXX - it may be desirable to allow backslash quoting only if " is
+ the quoted string delimiter, like the shell. */
+ if (*funname == '\'' || *funname == '"')
+ {
+ int delimiter = string[i++];
+ int passc = 0;
+
+ for (; c = string[i]; i++)
+ {
+ if (passc)
+ {
+ passc = 0;
+ continue;
+ }
+
+ if (c == '\\')
+ {
+ passc = 1;
+ continue;
+ }
+
+ if (c == delimiter)
+ break;
+ }
+ if (c)
+ i++;
+ }
+
+ /* Advance to the end of the string. */
+ for (; string[i] && !whitespace (string[i]); i++);
+
+ /* No extra whitespace at the end of the string. */
+ string[i] = '\0';
+
+ /* Handle equivalency bindings here. Make the left-hand side be exactly
+ whatever the right-hand evaluates to, including keymaps. */
+ if (equivalency)
+ {
+ return 0;
+ }
+
+ /* If this is a new-style key-binding, then do the binding with
+ rl_set_key (). Otherwise, let the older code deal with it. */
+ if (*string == '"')
+ {
+ char *seq = xmalloc (1 + strlen (string));
+ register int j, k = 0;
+ int passc = 0;
+
+ for (j = 1; string[j]; j++)
+ {
+ /* Allow backslash to quote characters, but leave them in place.
+ This allows a string to end with a backslash quoting another
+ backslash, or with a backslash quoting a double quote. The
+ backslashes are left in place for rl_translate_keyseq (). */
+ if (passc || (string[j] == '\\'))
+ {
+ seq[k++] = string[j];
+ passc = !passc;
+ continue;
+ }
+
+ if (string[j] == '"')
+ break;
+
+ seq[k++] = string[j];
+ }
+ seq[k] = '\0';
+
+ /* Binding macro? */
+ if (*funname == '\'' || *funname == '"')
+ {
+ j = strlen (funname);
+
+ /* Remove the delimiting quotes from each end of FUNNAME. */
+ if (j && funname[j - 1] == *funname)
+ funname[j - 1] = '\0';
+
+ rl_macro_bind (seq, &funname[1], _rl_keymap);
+ }
+ else
+ rl_set_key (seq, rl_named_function (funname), _rl_keymap);
+
+ free (seq);
+ return 0;
+ }
+
+ /* Get the actual character we want to deal with. */
+ kname = strrchr (string, '-');
+ if (!kname)
+ kname = string;
+ else
+ kname++;
+
+ key = glean_key_from_name (kname);
+
+ /* Add in control and meta bits. */
+ if (substring_member_of_array (string, possible_control_prefixes))
+ key = CTRL (_rl_to_upper (key));
+
+ if (substring_member_of_array (string, possible_meta_prefixes))
+ key = META (key);
+
+ /* Temporary. Handle old-style keyname with macro-binding. */
+ if (*funname == '\'' || *funname == '"')
+ {
+ char seq[2];
+ int fl = strlen (funname);
+
+ seq[0] = key; seq[1] = '\0';
+ if (fl && funname[fl - 1] == *funname)
+ funname[fl - 1] = '\0';
+
+ rl_macro_bind (seq, &funname[1], _rl_keymap);
+ }
+#if defined (PREFIX_META_HACK)
+ /* Ugly, but working hack to keep prefix-meta around. */
+ else if (_rl_stricmp (funname, "prefix-meta") == 0)
+ {
+ char seq[2];
+
+ seq[0] = key;
+ seq[1] = '\0';
+ rl_generic_bind (ISKMAP, seq, (char *)emacs_meta_keymap, _rl_keymap);
+ }
+#endif /* PREFIX_META_HACK */
+ else
+ rl_bind_key (key, rl_named_function (funname));
+ return 0;
+}
+
+/* Simple structure for boolean readline variables (i.e., those that can
+ have one of two values; either "On" or 1 for truth, or "Off" or 0 for
+ false. */
+
+static struct {
+ char *name;
+ int *value;
+} boolean_varlist [] = {
+#if defined (PAREN_MATCHING)
+ { "blink-matching-paren", &rl_blink_matching_paren },
+#endif
+ { "convert-meta", &_rl_convert_meta_chars_to_ascii },
+ { "disable-completion", &rl_inhibit_completion },
+ { "enable-keypad", &_rl_enable_keypad },
+ { "expand-tilde", &rl_complete_with_tilde_expansion },
+ { "horizontal-scroll-mode", &_rl_horizontal_scroll_mode },
+ { "input-meta", &_rl_meta_flag },
+ { "mark-directories", &_rl_complete_mark_directories },
+ { "mark-modified-lines", &_rl_mark_modified_lines },
+ { "meta-flag", &_rl_meta_flag },
+ { "output-meta", &_rl_output_meta_chars },
+ { "show-all-if-ambiguous", &_rl_complete_show_all },
+#if defined (VISIBLE_STATS)
+ { "visible-stats", &rl_visible_stats },
+#endif /* VISIBLE_STATS */
+ { (char *)NULL, (int *)NULL }
+};
+
+int
+rl_variable_bind (name, value)
+ char *name, *value;
+{
+ register int i;
+
+ /* Check for simple variables first. */
+ for (i = 0; boolean_varlist[i].name; i++)
+ {
+ if (_rl_stricmp (name, boolean_varlist[i].name) == 0)
+ {
+ /* A variable is TRUE if the "value" is "on", "1" or "". */
+ *boolean_varlist[i].value = *value == 0 ||
+ _rl_stricmp (value, "on") == 0 ||
+ (value[0] == '1' && value[1] == '\0');
+ return 0;
+ }
+ }
+
+ /* Not a boolean variable, so check for specials. */
+
+ /* Editing mode change? */
+ if (_rl_stricmp (name, "editing-mode") == 0)
+ {
+ if (_rl_strnicmp (value, "vi", 2) == 0)
+ {
+#if defined (VI_MODE)
+ _rl_keymap = vi_insertion_keymap;
+ rl_editing_mode = vi_mode;
+#endif /* VI_MODE */
+ }
+ else if (_rl_strnicmp (value, "emacs", 5) == 0)
+ {
+ _rl_keymap = emacs_standard_keymap;
+ rl_editing_mode = emacs_mode;
+ }
+ }
+
+ /* Comment string change? */
+ else if (_rl_stricmp (name, "comment-begin") == 0)
+ {
+ if (*value)
+ {
+ if (_rl_comment_begin)
+ free (_rl_comment_begin);
+
+ _rl_comment_begin = savestring (value);
+ }
+ }
+ else if (_rl_stricmp (name, "completion-query-items") == 0)
+ {
+ int nval = 100;
+ if (*value)
+ {
+ nval = atoi (value);
+ if (nval < 0)
+ nval = 0;
+ }
+ rl_completion_query_items = nval;
+ }
+ else if (_rl_stricmp (name, "keymap") == 0)
+ {
+ Keymap kmap;
+ kmap = rl_get_keymap_by_name (value);
+ if (kmap)
+ rl_set_keymap (kmap);
+ }
+ else if (_rl_stricmp (name, "bell-style") == 0)
+ {
+ if (!*value)
+ _rl_bell_preference = AUDIBLE_BELL;
+ else
+ {
+ if (_rl_stricmp (value, "none") == 0 || _rl_stricmp (value, "off") == 0)
+ _rl_bell_preference = NO_BELL;
+ else if (_rl_stricmp (value, "audible") == 0 || _rl_stricmp (value, "on") == 0)
+ _rl_bell_preference = AUDIBLE_BELL;
+ else if (_rl_stricmp (value, "visible") == 0)
+ _rl_bell_preference = VISIBLE_BELL;
+ }
+ }
+ else if (_rl_stricmp (name, "prefer-visible-bell") == 0)
+ {
+ /* Backwards compatibility. */
+ if (*value && (_rl_stricmp (value, "on") == 0 ||
+ (*value == '1' && !value[1])))
+ _rl_bell_preference = VISIBLE_BELL;
+ else
+ _rl_bell_preference = AUDIBLE_BELL;
+ }
+
+ return 0;
+}
+
+/* Return the character which matches NAME.
+ For example, `Space' returns ' '. */
+
+typedef struct {
+ char *name;
+ int value;
+} assoc_list;
+
+static assoc_list name_key_alist[] = {
+ { "DEL", 0x7f },
+ { "ESC", '\033' },
+ { "Escape", '\033' },
+ { "LFD", '\n' },
+ { "Newline", '\n' },
+ { "RET", '\r' },
+ { "Return", '\r' },
+ { "Rubout", 0x7f },
+ { "SPC", ' ' },
+ { "Space", ' ' },
+ { "Tab", 0x09 },
+ { (char *)0x0, 0 }
+};
+
+static int
+glean_key_from_name (name)
+ char *name;
+{
+ register int i;
+
+ for (i = 0; name_key_alist[i].name; i++)
+ if (_rl_stricmp (name, name_key_alist[i].name) == 0)
+ return (name_key_alist[i].value);
+
+ return (*(unsigned char *)name); /* XXX was return (*name) */
+}
+
+/* Auxiliary functions to manage keymaps. */
+static struct {
+ char *name;
+ Keymap map;
+} keymap_names[] = {
+ { "emacs", emacs_standard_keymap },
+ { "emacs-standard", emacs_standard_keymap },
+ { "emacs-meta", emacs_meta_keymap },
+ { "emacs-ctlx", emacs_ctlx_keymap },
+#if defined (VI_MODE)
+ { "vi", vi_movement_keymap },
+ { "vi-move", vi_movement_keymap },
+ { "vi-command", vi_movement_keymap },
+ { "vi-insert", vi_insertion_keymap },
+#endif /* VI_MODE */
+ { (char *)0x0, (Keymap)0x0 }
+};
+
+Keymap
+rl_get_keymap_by_name (name)
+ char *name;
+{
+ register int i;
+
+ for (i = 0; keymap_names[i].name; i++)
+ if (strcmp (name, keymap_names[i].name) == 0)
+ return (keymap_names[i].map);
+ return ((Keymap) NULL);
+}
+
+char *
+rl_get_keymap_name (map)
+ Keymap map;
+{
+ register int i;
+ for (i = 0; keymap_names[i].name; i++)
+ if (map == keymap_names[i].map)
+ return (keymap_names[i].name);
+ return ((char *)NULL);
+}
+
+void
+rl_set_keymap (map)
+ Keymap map;
+{
+ if (map)
+ _rl_keymap = map;
+}
+
+Keymap
+rl_get_keymap ()
+{
+ return (_rl_keymap);
+}
+
+void
+rl_set_keymap_from_edit_mode ()
+{
+ if (rl_editing_mode == emacs_mode)
+ _rl_keymap = emacs_standard_keymap;
+#if defined (VI_MODE)
+ else if (rl_editing_mode == vi_mode)
+ _rl_keymap = vi_insertion_keymap;
+#endif /* VI_MODE */
+}
+
+char *
+rl_get_keymap_name_from_edit_mode ()
+{
+ if (rl_editing_mode == emacs_mode)
+ return "emacs";
+#if defined (VI_MODE)
+ else if (rl_editing_mode == vi_mode)
+ return "vi";
+#endif /* VI_MODE */
+ else
+ return "none";
+}
+
+/* **************************************************************** */
+/* */
+/* Key Binding and Function Information */
+/* */
+/* **************************************************************** */
+
+/* Each of the following functions produces information about the
+ state of keybindings and functions known to Readline. The info
+ is always printed to rl_outstream, and in such a way that it can
+ be read back in (i.e., passed to rl_parse_and_bind (). */
+
+/* Print the names of functions known to Readline. */
+void
+rl_list_funmap_names ()
+{
+ register int i;
+ char **funmap_names;
+
+ funmap_names = rl_funmap_names ();
+
+ if (!funmap_names)
+ return;
+
+ for (i = 0; funmap_names[i]; i++)
+ fprintf (rl_outstream, "%s\n", funmap_names[i]);
+
+ free (funmap_names);
+}
+
+static char *
+_rl_get_keyname (key)
+ int key;
+{
+ char *keyname;
+ int i, c;
+
+ keyname = (char *)xmalloc (8);
+
+ c = key;
+ /* Since this is going to be used to write out keysequence-function
+ pairs for possible inclusion in an inputrc file, we don't want to
+ do any special meta processing on KEY. */
+
+#if 0
+ /* We might want to do this, but the old version of the code did not. */
+
+ /* If this is an escape character, we don't want to do any more processing.
+ Just add the special ESC key sequence and return. */
+ if (c == ESC)
+ {
+ keyseq[0] = '\\';
+ keyseq[1] = 'e';
+ keyseq[2] = '\0';
+ return keyseq;
+ }
+#endif
+
+ /* RUBOUT is translated directly into \C-? */
+ if (key == RUBOUT)
+ {
+ keyname[0] = '\\';
+ keyname[1] = 'C';
+ keyname[2] = '-';
+ keyname[3] = '?';
+ keyname[4] = '\0';
+ return keyname;
+ }
+
+ i = 0;
+ /* Now add special prefixes needed for control characters. This can
+ potentially change C. */
+ if (CTRL_CHAR (c))
+ {
+ keyname[i++] = '\\';
+ keyname[i++] = 'C';
+ keyname[i++] = '-';
+ c = _rl_to_lower (UNCTRL (c));
+ }
+
+ /* Now, if the character needs to be quoted with a backslash, do that. */
+ if (c == '\\' || c == '"')
+ keyname[i++] = '\\';
+
+ /* Now add the key, terminate the string, and return it. */
+ keyname[i++] = (char) c;
+ keyname[i] = '\0';
+
+ return keyname;
+}
+
+/* Return a NULL terminated array of strings which represent the key
+ sequences that are used to invoke FUNCTION in MAP. */
+char **
+rl_invoking_keyseqs_in_map (function, map)
+ Function *function;
+ Keymap map;
+{
+ register int key;
+ char **result;
+ int result_index, result_size;
+
+ result = (char **)NULL;
+ result_index = result_size = 0;
+
+ for (key = 0; key < KEYMAP_SIZE; key++)
+ {
+ switch (map[key].type)
+ {
+ case ISMACR:
+ /* Macros match, if, and only if, the pointers are identical.
+ Thus, they are treated exactly like functions in here. */
+ case ISFUNC:
+ /* If the function in the keymap is the one we are looking for,
+ then add the current KEY to the list of invoking keys. */
+ if (map[key].function == function)
+ {
+ char *keyname;
+
+ keyname = _rl_get_keyname (key);
+
+ if (result_index + 2 > result_size)
+ {
+ result_size += 10;
+ result = (char **) xrealloc (result, result_size * sizeof (char *));
+ }
+
+ result[result_index++] = keyname;
+ result[result_index] = (char *)NULL;
+ }
+ break;
+
+ case ISKMAP:
+ {
+ char **seqs;
+ register int i;
+
+ /* Find the list of keyseqs in this map which have FUNCTION as
+ their target. Add the key sequences found to RESULT. */
+ if (map[key].function)
+ seqs =
+ rl_invoking_keyseqs_in_map (function, FUNCTION_TO_KEYMAP (map, key));
+ else
+ break;
+
+ if (seqs == 0)
+ break;
+
+ for (i = 0; seqs[i]; i++)
+ {
+ char *keyname = (char *)xmalloc (6 + strlen (seqs[i]));
+
+ if (key == ESC)
+ sprintf (keyname, "\\e");
+ else if (CTRL_CHAR (key))
+ sprintf (keyname, "\\C-%c", _rl_to_lower (UNCTRL (key)));
+ else if (key == RUBOUT)
+ sprintf (keyname, "\\C-?");
+ else if (key == '\\' || key == '"')
+ {
+ keyname[0] = '\\';
+ keyname[1] = (char) key;
+ keyname[2] = '\0';
+ }
+ else
+ {
+ keyname[0] = (char) key;
+ keyname[1] = '\0';
+ }
+
+ strcat (keyname, seqs[i]);
+ free (seqs[i]);
+
+ if (result_index + 2 > result_size)
+ {
+ result_size += 10;
+ result = (char **) xrealloc (result, result_size * sizeof (char *));
+ }
+
+ result[result_index++] = keyname;
+ result[result_index] = (char *)NULL;
+ }
+
+ free (seqs);
+ }
+ break;
+ }
+ }
+ return (result);
+}
+
+/* Return a NULL terminated array of strings which represent the key
+ sequences that can be used to invoke FUNCTION using the current keymap. */
+char **
+rl_invoking_keyseqs (function)
+ Function *function;
+{
+ return (rl_invoking_keyseqs_in_map (function, _rl_keymap));
+}
+
+/* Print all of the functions and their bindings to rl_outstream. If
+ PRINT_READABLY is non-zero, then print the output in such a way
+ that it can be read back in. */
+void
+rl_function_dumper (print_readably)
+ int print_readably;
+{
+ register int i;
+ char **names;
+ char *name;
+
+ names = rl_funmap_names ();
+
+ fprintf (rl_outstream, "\n");
+
+ for (i = 0; name = names[i]; i++)
+ {
+ Function *function;
+ char **invokers;
+
+ function = rl_named_function (name);
+ invokers = rl_invoking_keyseqs_in_map (function, _rl_keymap);
+
+ if (print_readably)
+ {
+ if (!invokers)
+ fprintf (rl_outstream, "# %s (not bound)\n", name);
+ else
+ {
+ register int j;
+
+ for (j = 0; invokers[j]; j++)
+ {
+ fprintf (rl_outstream, "\"%s\": %s\n",
+ invokers[j], name);
+ free (invokers[j]);
+ }
+
+ free (invokers);
+ }
+ }
+ else
+ {
+ if (!invokers)
+ fprintf (rl_outstream, "%s is not bound to any keys\n",
+ name);
+ else
+ {
+ register int j;
+
+ fprintf (rl_outstream, "%s can be found on ", name);
+
+ for (j = 0; invokers[j] && j < 5; j++)
+ {
+ fprintf (rl_outstream, "\"%s\"%s", invokers[j],
+ invokers[j + 1] ? ", " : ".\n");
+ }
+
+ if (j == 5 && invokers[j])
+ fprintf (rl_outstream, "...\n");
+
+ for (j = 0; invokers[j]; j++)
+ free (invokers[j]);
+
+ free (invokers);
+ }
+ }
+ }
+}
+
+/* Print all of the current functions and their bindings to
+ rl_outstream. If an explicit argument is given, then print
+ the output in such a way that it can be read back in. */
+int
+rl_dump_functions (count, key)
+ int count, key;
+{
+ rl_function_dumper (rl_explicit_arg);
+ rl_on_new_line ();
+ return (0);
+}
+
+static void
+_rl_macro_dumper_internal (print_readably, map, prefix)
+ int print_readably;
+ Keymap map;
+ char *prefix;
+{
+ register int key;
+ char *keyname, *out;
+ int prefix_len;
+
+ for (key = 0; key < KEYMAP_SIZE; key++)
+ {
+ switch (map[key].type)
+ {
+ case ISMACR:
+ keyname = _rl_get_keyname (key);
+ out = (char *)map[key].function;
+ if (print_readably)
+ fprintf (rl_outstream, "\"%s%s\": \"%s\"\n", prefix ? prefix : "",
+ keyname,
+ out ? out : "");
+ else
+ fprintf (rl_outstream, "%s%s outputs %s\n", prefix ? prefix : "",
+ keyname,
+ out ? out : "");
+ free (keyname);
+ break;
+ case ISFUNC:
+ break;
+ case ISKMAP:
+ prefix_len = prefix ? strlen (prefix) : 0;
+ if (key == ESC)
+ {
+ keyname = xmalloc (3 + prefix_len);
+ if (prefix)
+ strcpy (keyname, prefix);
+ keyname[prefix_len] = '\\';
+ keyname[prefix_len + 1] = 'e';
+ keyname[prefix_len + 2] = '\0';
+ }
+ else
+ {
+ keyname = _rl_get_keyname (key);
+ if (prefix)
+ {
+ out = xmalloc (strlen (keyname) + prefix_len + 1);
+ strcpy (out, prefix);
+ strcpy (out + prefix_len, keyname);
+ free (keyname);
+ keyname = out;
+ }
+ }
+
+ _rl_macro_dumper_internal (print_readably, FUNCTION_TO_KEYMAP (map, key), keyname);
+ free (keyname);
+ break;
+ }
+ }
+}
+
+void
+rl_macro_dumper (print_readably)
+ int print_readably;
+{
+ _rl_macro_dumper_internal (print_readably, _rl_keymap, (char *)NULL);
+}
+
+int
+rl_dump_macros (count, key)
+ int count, key;
+{
+ rl_macro_dumper (rl_explicit_arg);
+ rl_on_new_line ();
+ return (0);
+}
+
+void
+rl_variable_dumper (print_readably)
+ int print_readably;
+{
+ int i;
+ char *kname;
+
+ for (i = 0; boolean_varlist[i].name; i++)
+ {
+ if (print_readably)
+ fprintf (rl_outstream, "set %s %s\n", boolean_varlist[i].name,
+ *boolean_varlist[i].value ? "on" : "off");
+ else
+ fprintf (rl_outstream, "%s is set to `%s'\n", boolean_varlist[i].name,
+ *boolean_varlist[i].value ? "on" : "off");
+ }
+
+ /* bell-style */
+ switch (_rl_bell_preference)
+ {
+ case NO_BELL: kname = "none"; break;
+ case VISIBLE_BELL: kname = "visible"; break;
+ case AUDIBLE_BELL:
+ default: kname = "audible"; break;
+ }
+ if (print_readably)
+ fprintf (rl_outstream, "set bell-style %s\n", kname);
+ else
+ fprintf (rl_outstream, "bell-style is set to `%s'\n", kname);
+
+ /* comment-begin */
+ if (print_readably)
+ fprintf (rl_outstream, "set comment-begin %s\n", _rl_comment_begin ? _rl_comment_begin : RL_COMMENT_BEGIN_DEFAULT);
+ else
+ fprintf (rl_outstream, "comment-begin is set to `%s'\n", _rl_comment_begin ? _rl_comment_begin : "");
+
+ /* completion-query-items */
+ if (print_readably)
+ fprintf (rl_outstream, "set completion-query-items %d\n", rl_completion_query_items);
+ else
+ fprintf (rl_outstream, "completion-query-items is set to `%d'\n", rl_completion_query_items);
+
+ /* editing-mode */
+ if (print_readably)
+ fprintf (rl_outstream, "set editing-mode %s\n", (rl_editing_mode == emacs_mode) ? "emacs" : "vi");
+ else
+ fprintf (rl_outstream, "editing-mode is set to `%s'\n", (rl_editing_mode == emacs_mode) ? "emacs" : "vi");
+
+ /* keymap */
+ kname = rl_get_keymap_name (_rl_keymap);
+ if (kname == 0)
+ kname = rl_get_keymap_name_from_edit_mode ();
+ if (print_readably)
+ fprintf (rl_outstream, "set keymap %s\n", kname ? kname : "none");
+ else
+ fprintf (rl_outstream, "keymap is set to `%s'\n", kname ? kname : "none");
+}
+
+/* Print all of the current variables and their values to
+ rl_outstream. If an explicit argument is given, then print
+ the output in such a way that it can be read back in. */
+int
+rl_dump_variables (count, key)
+ int count, key;
+{
+ rl_variable_dumper (rl_explicit_arg);
+ rl_on_new_line ();
+ return (0);
+}
+
+/* Bind key sequence KEYSEQ to DEFAULT_FUNC if KEYSEQ is unbound. */
+void
+_rl_bind_if_unbound (keyseq, default_func)
+ char *keyseq;
+ Function *default_func;
+{
+ Function *func;
+
+ if (keyseq)
+ {
+ func = rl_function_of_keyseq (keyseq, _rl_keymap, (int *)NULL);
+ if (!func || func == rl_do_lowercase_version)
+ rl_set_key (keyseq, default_func, _rl_keymap);
+ }
+}
+
+/* Return non-zero if any members of ARRAY are a substring in STRING. */
+static int
+substring_member_of_array (string, array)
+ char *string, **array;
+{
+ while (*array)
+ {
+ if (_rl_strindex (string, *array))
+ return (1);
+ array++;
+ }
+ return (0);
+}
diff --git a/contrib/libreadline/callback.c b/contrib/libreadline/callback.c
new file mode 100644
index 0000000..ad57f75
--- /dev/null
+++ b/contrib/libreadline/callback.c
@@ -0,0 +1,144 @@
+/* callback.c -- functions to use readline as an X `callback' mechanism. */
+
+/* Copyright (C) 1987, 1989, 1992 Free Software Foundation, Inc.
+
+ This file is part of the GNU Readline Library, a library for
+ reading lines of text with interactive input and history editing.
+
+ The GNU Readline Library is free software; you can redistribute it
+ and/or modify it under the terms of the GNU General Public License
+ as published by the Free Software Foundation; either version 1, or
+ (at your option) any later version.
+
+ The GNU Readline Library is distributed in the hope that it will be
+ useful, but WITHOUT ANY WARRANTY; without even the implied warranty
+ of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ The GNU General Public License is often shipped with GNU software, and
+ is generally kept in a file called COPYING or LICENSE. If you do not
+ have a copy of the license, write to the Free Software Foundation,
+ 675 Mass Ave, Cambridge, MA 02139, USA. */
+#define READLINE_LIBRARY
+
+#if defined (HAVE_CONFIG_H)
+# include <config.h>
+#endif
+
+#include "rlconf.h"
+
+#if defined (READLINE_CALLBACKS)
+
+#include <sys/types.h>
+#include <stdio.h>
+
+/* System-specific feature definitions and include files. */
+#include "rldefs.h"
+#include "readline.h"
+
+extern void readline_internal_startup ();
+extern char *readline_internal_teardown ();
+extern int readline_internal_char ();
+
+extern int _rl_meta_flag;
+extern char *rl_prompt;
+extern int rl_visible_prompt_length;
+
+/* **************************************************************** */
+/* */
+/* Callback Readline Functions */
+/* */
+/* **************************************************************** */
+
+/* Allow using readline in situations where a program may have multiple
+ things to handle at once, and dispatches them via select(). Call
+ rl_callback_handler_install() with the prompt and a function to call
+ whenever a complete line of input is ready. The user must then
+ call readline_char() every time some input is available, and
+ readline_char() will call the user's function with the complete text
+ read in at each end of line. The terminal is kept prepped and signals
+ handled all the time, except during calls to the user's function. */
+
+VFunction *rl_linefunc; /* user callback function */
+static int in_handler; /* terminal_prepped and signals set? */
+
+/* Make sure the terminal is set up, initialize readline, and prompt. */
+static void
+_rl_callback_newline ()
+{
+ rl_initialize ();
+
+ if (in_handler == 0)
+ {
+ in_handler = 1;
+
+ (*rl_prep_term_function) (_rl_meta_flag);
+
+#if defined (HANDLE_SIGNALS)
+ rl_set_signals ();
+#endif
+ }
+
+ readline_internal_setup ();
+}
+
+/* Install a readline handler, set up the terminal, and issue the prompt. */
+void
+rl_callback_handler_install (prompt, linefunc)
+ char *prompt;
+ VFunction *linefunc;
+{
+ rl_prompt = prompt;
+ rl_visible_prompt_length = rl_prompt ? rl_expand_prompt (rl_prompt) : 0;
+ rl_linefunc = linefunc;
+ _rl_callback_newline ();
+}
+
+/* Read one character, and dispatch to the handler if it ends the line. */
+void
+rl_callback_read_char ()
+{
+ char *line;
+ int eof;
+
+ if (rl_linefunc == NULL)
+ {
+ fprintf (stderr, "readline: readline_callback_read_char() called with no handler!\r\n");
+ abort ();
+ }
+
+ eof = readline_internal_char ();
+
+ if (rl_done)
+ {
+ line = readline_internal_teardown (eof);
+
+ (*rl_deprep_term_function) ();
+#if defined (HANDLE_SIGNALS)
+ rl_clear_signals ();
+#endif
+ in_handler = 0;
+ (*rl_linefunc) (line);
+
+ /* Redisplay the prompt if readline_handler_{install,remove} not called. */
+ if (in_handler == 0 && rl_linefunc)
+ _rl_callback_newline ();
+ }
+}
+
+/* Remove the handler, and make sure the terminal is in its normal state. */
+void
+rl_callback_handler_remove ()
+{
+ rl_linefunc = NULL;
+ if (in_handler)
+ {
+ in_handler = 0;
+ (*rl_deprep_term_function) ();
+#if defined (HANDLE_SIGNALS)
+ rl_clear_signals ();
+#endif
+ }
+}
+
+#endif
diff --git a/contrib/libreadline/chardefs.h b/contrib/libreadline/chardefs.h
new file mode 100644
index 0000000..8e6f0ef
--- /dev/null
+++ b/contrib/libreadline/chardefs.h
@@ -0,0 +1,127 @@
+/* chardefs.h -- Character definitions for readline. */
+
+/* Copyright (C) 1994 Free Software Foundation, Inc.
+
+ This file is part of the GNU Readline Library, a library for
+ reading lines of text with interactive input and history editing.
+
+ The GNU Readline Library is free software; you can redistribute it
+ and/or modify it under the terms of the GNU General Public License
+ as published by the Free Software Foundation; either version 1, or
+ (at your option) any later version.
+
+ The GNU Readline Library is distributed in the hope that it will be
+ useful, but WITHOUT ANY WARRANTY; without even the implied warranty
+ of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ The GNU General Public License is often shipped with GNU software, and
+ is generally kept in a file called COPYING or LICENSE. If you do not
+ have a copy of the license, write to the Free Software Foundation,
+ 675 Mass Ave, Cambridge, MA 02139, USA. */
+
+#ifndef _CHARDEFS_H_
+#define _CHARDEFS_H_
+
+#include <ctype.h>
+
+#if defined (HAVE_CONFIG_H)
+# if defined (HAVE_STRING_H)
+# include <string.h>
+# else
+# include <strings.h>
+# endif /* HAVE_STRING_H */
+#else
+# include <string.h>
+#endif /* !HAVE_CONFIG_H */
+
+#ifndef whitespace
+#define whitespace(c) (((c) == ' ') || ((c) == '\t'))
+#endif
+
+#ifdef CTRL
+#undef CTRL
+#endif
+
+/* Some character stuff. */
+#define control_character_threshold 0x020 /* Smaller than this is control. */
+#define control_character_mask 0x1f /* 0x20 - 1 */
+#define meta_character_threshold 0x07f /* Larger than this is Meta. */
+#define control_character_bit 0x40 /* 0x000000, must be off. */
+#define meta_character_bit 0x080 /* x0000000, must be on. */
+#define largest_char 255 /* Largest character value. */
+
+#define CTRL_CHAR(c) ((c) < control_character_threshold && (c) >= 0)
+#define META_CHAR(c) ((c) > meta_character_threshold && (c) <= largest_char)
+
+#define CTRL(c) ((c) & control_character_mask)
+#define META(c) ((c) | meta_character_bit)
+
+#define UNMETA(c) ((c) & (~meta_character_bit))
+#define UNCTRL(c) _rl_to_upper(((c)|control_character_bit))
+
+/* Old versions
+#define _rl_lowercase_p(c) (((c) > ('a' - 1) && (c) < ('z' + 1)))
+#define _rl_uppercase_p(c) (((c) > ('A' - 1) && (c) < ('Z' + 1)))
+#define _rl_digit_p(c) ((c) >= '0' && (c) <= '9')
+*/
+
+#define _rl_lowercase_p(c) (islower(c))
+#define _rl_uppercase_p(c) (isupper(c))
+#define _rl_digit_p(x) (isdigit (x))
+
+#define _rl_pure_alphabetic(c) (_rl_lowercase_p(c) || _rl_uppercase_p(c))
+#define ALPHABETIC(c) (_rl_lowercase_p(c) || _rl_uppercase_p(c) || _rl_digit_p(c))
+
+/* Old versions
+# define _rl_to_upper(c) (_rl_lowercase_p(c) ? ((c) - 32) : (c))
+# define _rl_to_lower(c) (_rl_uppercase_p(c) ? ((c) + 32) : (c))
+*/
+
+#ifndef _rl_to_upper
+# define _rl_to_upper(c) (islower(c) ? toupper(c) : (c))
+# define _rl_to_lower(c) (isupper(c) ? tolower(c) : (c))
+#endif
+
+#ifndef _rl_digit_value
+#define _rl_digit_value(x) ((x) - '0')
+#endif
+
+#ifndef NEWLINE
+#define NEWLINE '\n'
+#endif
+
+#ifndef RETURN
+#define RETURN CTRL('M')
+#endif
+
+#ifndef RUBOUT
+#define RUBOUT 0x7f
+#endif
+
+#ifndef TAB
+#define TAB '\t'
+#endif
+
+#ifdef ABORT_CHAR
+#undef ABORT_CHAR
+#endif
+#define ABORT_CHAR CTRL('G')
+
+#ifdef PAGE
+#undef PAGE
+#endif
+#define PAGE CTRL('L')
+
+#ifdef SPACE
+#undef SPACE
+#endif
+#define SPACE ' ' /* XXX - was 0x20 */
+
+#ifdef ESC
+#undef ESC
+#endif
+
+#define ESC CTRL('[')
+
+#endif /* _CHARDEFS_H_ */
diff --git a/contrib/libreadline/complete.c b/contrib/libreadline/complete.c
new file mode 100644
index 0000000..f9e27eb
--- /dev/null
+++ b/contrib/libreadline/complete.c
@@ -0,0 +1,1542 @@
+/* complete.c -- filename completion for readline. */
+
+/* Copyright (C) 1987, 1989, 1992 Free Software Foundation, Inc.
+
+ This file is part of the GNU Readline Library, a library for
+ reading lines of text with interactive input and history editing.
+
+ The GNU Readline Library is free software; you can redistribute it
+ and/or modify it under the terms of the GNU General Public License
+ as published by the Free Software Foundation; either version 1, or
+ (at your option) any later version.
+
+ The GNU Readline Library is distributed in the hope that it will be
+ useful, but WITHOUT ANY WARRANTY; without even the implied warranty
+ of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ The GNU General Public License is often shipped with GNU software, and
+ is generally kept in a file called COPYING or LICENSE. If you do not
+ have a copy of the license, write to the Free Software Foundation,
+ 675 Mass Ave, Cambridge, MA 02139, USA. */
+#define READLINE_LIBRARY
+
+#if defined (HAVE_CONFIG_H)
+# include <config.h>
+#endif
+
+#include <stdio.h>
+#include <sys/types.h>
+#include <fcntl.h>
+#if defined (HAVE_SYS_FILE_H)
+#include <sys/file.h>
+#endif
+
+#if defined (HAVE_UNISTD_H)
+# include <unistd.h>
+#endif /* HAVE_UNISTD_H */
+
+#if defined (HAVE_STDLIB_H)
+# include <stdlib.h>
+#else
+# include "ansi_stdlib.h"
+#endif /* HAVE_STDLIB_H */
+
+#include <errno.h>
+#if !defined (errno)
+extern int errno;
+#endif /* !errno */
+
+#include <pwd.h>
+#if !defined (HAVE_GETPW_DECLS)
+extern struct passwd *getpwent ();
+#endif /* USG && !HAVE_GETPW_DECLS */
+
+/* ISC systems don't define getpwent() if _POSIX_SOURCE is defined. */
+#if defined (isc386) && defined (_POSIX_SOURCE)
+# if defined (__STDC__)
+extern struct passwd *getpwent (void);
+# else
+extern struct passwd *getpwent ();
+# endif /* !__STDC__ */
+#endif /* isc386 && _POSIX_SOURCE */
+
+#include "posixdir.h"
+#include "posixstat.h"
+
+/* System-specific feature definitions and include files. */
+#include "rldefs.h"
+
+/* Some standard library routines. */
+#include "readline.h"
+
+extern char *tilde_expand ();
+extern char *rl_copy_text ();
+extern void _rl_abort_internal ();
+extern int _rl_qsort_string_compare ();
+
+extern Function *rl_last_func;
+extern int rl_editing_mode;
+extern int screenwidth;
+
+extern void _rl_move_vert ();
+extern int _rl_vis_botlin;
+extern int rl_display_fixed;
+
+/* Forward declarations for functions defined and used in this file. */
+char *filename_completion_function ();
+char **completion_matches ();
+
+static char *rl_quote_filename ();
+static char *rl_strpbrk ();
+
+static char **remove_duplicate_matches ();
+static void insert_text ();
+static void insert_match ();
+static void append_to_match ();
+static void insert_all_matches ();
+static void display_matches ();
+static int compute_lcd_of_matches ();
+
+extern char *xmalloc (), *xrealloc ();
+
+/* If non-zero, then this is the address of a function to call when
+ completing on a directory name. The function is called with
+ the address of a string (the current directory name) as an arg. */
+Function *rl_directory_completion_hook = (Function *)NULL;
+
+/* Non-zero means readline completion functions perform tilde expansion. */
+int rl_complete_with_tilde_expansion = 0;
+
+/* If non-zero, non-unique completions always show the list of matches. */
+int _rl_complete_show_all = 0;
+
+/* If non-zero, completed directory names have a slash appended. */
+int _rl_complete_mark_directories = 1;
+
+#if defined (VISIBLE_STATS)
+# if !defined (X_OK)
+# define X_OK 1
+# endif
+
+static int stat_char ();
+
+/* Non-zero means add an additional character to each filename displayed
+ during listing completion iff rl_filename_completion_desired which helps
+ to indicate the type of file being listed. */
+int rl_visible_stats = 0;
+#endif /* VISIBLE_STATS */
+
+/* **************************************************************** */
+/* */
+/* Completion matching, from readline's point of view. */
+/* */
+/* **************************************************************** */
+
+/* Local variable states what happened during the last completion attempt. */
+static int completion_changed_buffer;
+
+/* Pointer to the generator function for completion_matches ().
+ NULL means to use filename_entry_function (), the default filename
+ completer. */
+Function *rl_completion_entry_function = (Function *)NULL;
+
+/* Pointer to alternative function to create matches.
+ Function is called with TEXT, START, and END.
+ START and END are indices in RL_LINE_BUFFER saying what the boundaries
+ of TEXT are.
+ If this function exists and returns NULL then call the value of
+ rl_completion_entry_function to try to match, otherwise use the
+ array of strings returned. */
+CPPFunction *rl_attempted_completion_function = (CPPFunction *)NULL;
+
+/* Non-zero means to suppress normal filename completion after the
+ user-specified completion function has been called. */
+int rl_attempted_completion_over = 0;
+
+/* Set to a character indicating the type of completion being performed
+ by rl_complete_internal, available for use by application completion
+ functions. */
+int rl_completion_type = 0;
+
+/* Up to this many items will be displayed in response to a
+ possible-completions call. After that, we ask the user if
+ she is sure she wants to see them all. */
+int rl_completion_query_items = 100;
+
+/* The basic list of characters that signal a break between words for the
+ completer routine. The contents of this variable is what breaks words
+ in the shell, i.e. " \t\n\"\\'`@$><=" */
+char *rl_basic_word_break_characters = " \t\n\"\\'`@$><=;|&{(";
+
+/* List of basic quoting characters. */
+char *rl_basic_quote_characters = "\"'";
+
+/* The list of characters that signal a break between words for
+ rl_complete_internal. The default list is the contents of
+ rl_basic_word_break_characters. */
+char *rl_completer_word_break_characters = (char *)NULL;
+
+/* List of characters which can be used to quote a substring of the line.
+ Completion occurs on the entire substring, and within the substring
+ rl_completer_word_break_characters are treated as any other character,
+ unless they also appear within this list. */
+char *rl_completer_quote_characters = (char *)NULL;
+
+/* List of characters that should be quoted in filenames by the completer. */
+char *rl_filename_quote_characters = (char *)NULL;
+
+/* List of characters that are word break characters, but should be left
+ in TEXT when it is passed to the completion function. The shell uses
+ this to help determine what kind of completing to do. */
+char *rl_special_prefixes = (char *)NULL;
+
+/* If non-zero, then disallow duplicates in the matches. */
+int rl_ignore_completion_duplicates = 1;
+
+/* Non-zero means that the results of the matches are to be treated
+ as filenames. This is ALWAYS zero on entry, and can only be changed
+ within a completion entry finder function. */
+int rl_filename_completion_desired = 0;
+
+/* Non-zero means that the results of the matches are to be quoted using
+ double quotes (or an application-specific quoting mechanism) if the
+ filename contains any characters in rl_filename_quote_chars. This is
+ ALWAYS non-zero on entry, and can only be changed within a completion
+ entry finder function. */
+int rl_filename_quoting_desired = 1;
+
+/* This function, if defined, is called by the completer when real
+ filename completion is done, after all the matching names have been
+ generated. It is passed a (char**) known as matches in the code below.
+ It consists of a NULL-terminated array of pointers to potential
+ matching strings. The 1st element (matches[0]) is the maximal
+ substring that is common to all matches. This function can re-arrange
+ the list of matches as required, but all elements of the array must be
+ free()'d if they are deleted. The main intent of this function is
+ to implement FIGNORE a la SunOS csh. */
+Function *rl_ignore_some_completions_function = (Function *)NULL;
+
+/* Set to a function to quote a filename in an application-specific fashion.
+ Called with the text to quote, the type of match found (single or multiple)
+ and a pointer to the quoting character to be used, which the function can
+ reset if desired. */
+CPFunction *rl_filename_quoting_function = rl_quote_filename;
+
+/* Function to call to remove quoting characters from a filename. Called
+ before completion is attempted, so the embedded quotes do not interfere
+ with matching names in the file system. Readline doesn't do anything
+ with this; it's set only by applications. */
+CPFunction *rl_filename_dequoting_function = (CPFunction *)NULL;
+
+/* Function to call to decide whether or not a word break character is
+ quoted. If a character is quoted, it does not break words for the
+ completer. */
+Function *rl_char_is_quoted_p = (Function *)NULL;
+
+/* Character appended to completed words when at the end of the line. The
+ default is a space. */
+int rl_completion_append_character = ' ';
+
+/* If non-zero, inhibit completion (temporarily). */
+int rl_inhibit_completion;
+
+/* Complete the word at or before point. You have supplied the function
+ that does the initial simple matching selection algorithm (see
+ completion_matches ()). The default is to do filename completion. */
+int
+rl_complete (ignore, invoking_key)
+ int ignore, invoking_key;
+{
+ if (rl_inhibit_completion)
+ return (rl_insert (ignore, invoking_key));
+ else if (rl_last_func == rl_complete && !completion_changed_buffer)
+ return (rl_complete_internal ('?'));
+ else if (_rl_complete_show_all)
+ return (rl_complete_internal ('!'));
+ else
+ return (rl_complete_internal (TAB));
+}
+
+/* List the possible completions. See description of rl_complete (). */
+int
+rl_possible_completions (ignore, invoking_key)
+ int ignore, invoking_key;
+{
+ return (rl_complete_internal ('?'));
+}
+
+int
+rl_insert_completions (ignore, invoking_key)
+ int ignore, invoking_key;
+{
+ return (rl_complete_internal ('*'));
+}
+
+/* The user must press "y" or "n". Non-zero return means "y" pressed. */
+static int
+get_y_or_n ()
+{
+ int c;
+
+ for (;;)
+ {
+ c = rl_read_key ();
+ if (c == 'y' || c == 'Y' || c == ' ')
+ return (1);
+ if (c == 'n' || c == 'N' || c == RUBOUT)
+ return (0);
+ if (c == ABORT_CHAR)
+ _rl_abort_internal ();
+ ding ();
+ }
+}
+
+/* Return the portion of PATHNAME that should be output when listing
+ possible completions. If we are hacking filename completion, we
+ are only interested in the basename, the portion following the
+ final slash. Otherwise, we return what we were passed. */
+static char *
+printable_part (pathname)
+ char *pathname;
+{
+ char *temp;
+
+ temp = rl_filename_completion_desired ? strrchr (pathname, '/') : (char *)NULL;
+ return (temp ? ++temp : pathname);
+}
+
+/* Output TO_PRINT to rl_outstream. If VISIBLE_STATS is defined and we
+ are using it, check for and output a single character for `special'
+ filenames. Return 1 if we printed an extension character, 0 if not. */
+
+#define PUTX(c) \
+ if (CTRL_CHAR (c)) \
+ { \
+ putc ('^', rl_outstream); \
+ putc (UNCTRL (c), rl_outstream); \
+ } \
+ else if (c == RUBOUT) \
+ { \
+ putc ('^', rl_outstream); \
+ putc ('?', rl_outstream); \
+ } \
+ else \
+ putc (c, rl_outstream)
+
+static int
+print_filename (to_print, full_pathname)
+ char *to_print, *full_pathname;
+{
+#if !defined (VISIBLE_STATS)
+ char *s;
+
+ for (s = to_print; *s; s++)
+ {
+ PUTX (*s);
+ }
+ return 0;
+#else
+ char *s, c, *new_full_pathname;
+ int extension_char, slen, tlen;
+
+ for (s = to_print; *s; s++)
+ {
+ PUTX (*s);
+ }
+
+ if (rl_filename_completion_desired && rl_visible_stats)
+ {
+ /* If to_print != full_pathname, to_print is the basename of the
+ path passed. In this case, we try to expand the directory
+ name before checking for the stat character. */
+ if (to_print != full_pathname)
+ {
+ /* Terminate the directory name. */
+ c = to_print[-1];
+ to_print[-1] = '\0';
+
+ s = tilde_expand (full_pathname);
+ if (rl_directory_completion_hook)
+ (*rl_directory_completion_hook) (&s);
+
+ slen = strlen (s);
+ tlen = strlen (to_print);
+ new_full_pathname = xmalloc (slen + tlen + 2);
+ strcpy (new_full_pathname, s);
+ new_full_pathname[slen] = '/';
+ strcpy (new_full_pathname + slen + 1, to_print);
+
+ extension_char = stat_char (new_full_pathname);
+
+ free (new_full_pathname);
+ to_print[-1] = c;
+ }
+ else
+ {
+ s = tilde_expand (full_pathname);
+ extension_char = stat_char (s);
+ }
+
+ free (s);
+ if (extension_char)
+ putc (extension_char, rl_outstream);
+ return (extension_char != 0);
+ }
+ else
+ return 0;
+#endif /* VISIBLE_STATS */
+}
+
+static char *
+rl_quote_filename (s, rtype, qcp)
+ char *s;
+ int rtype;
+ char *qcp;
+{
+ char *r;
+
+ r = xmalloc (strlen (s) + 2);
+ *r = *rl_completer_quote_characters;
+ strcpy (r + 1, s);
+ if (qcp)
+ *qcp = *rl_completer_quote_characters;
+ return r;
+}
+
+/* Find the bounds of the current word for completion purposes, and leave
+ rl_point set to the end of the word. This function skips quoted
+ substrings (characters between matched pairs of characters in
+ rl_completer_quote_characters. First we try to find an unclosed
+ quoted substring on which to do matching. If one is not found, we use
+ the word break characters to find the boundaries of the current word.
+ We call an application-specific function to decide whether or not a
+ particular word break character is quoted; if that function returns a
+ non-zero result, the character does not break a word. This function
+ returns the opening quote character if we found an unclosed quoted
+ substring, '\0' otherwise. FP, if non-null, is set to a value saying
+ which (shell-like) quote characters we found (single quote, double
+ quote, or backslash) anywhere in the string. DP, if non-null, is set to
+ the value of the delimiter character that caused a word break. */
+
+static char
+find_completion_word (fp, dp)
+ int *fp, *dp;
+{
+ int scan, end, found_quote, delimiter, pass_next, isbrk;
+ char quote_char;
+
+ end = rl_point;
+ found_quote = delimiter = 0;
+ quote_char = '\0';
+
+ if (rl_completer_quote_characters)
+ {
+ /* We have a list of characters which can be used in pairs to
+ quote substrings for the completer. Try to find the start
+ of an unclosed quoted substring. */
+ /* FOUND_QUOTE is set so we know what kind of quotes we found. */
+ for (scan = pass_next = 0; scan < end; scan++)
+ {
+ if (pass_next)
+ {
+ pass_next = 0;
+ continue;
+ }
+
+ if (rl_line_buffer[scan] == '\\')
+ {
+ pass_next = 1;
+ found_quote |= RL_QF_BACKSLASH;
+ continue;
+ }
+
+ if (quote_char != '\0')
+ {
+ /* Ignore everything until the matching close quote char. */
+ if (rl_line_buffer[scan] == quote_char)
+ {
+ /* Found matching close. Abandon this substring. */
+ quote_char = '\0';
+ rl_point = end;
+ }
+ }
+ else if (strchr (rl_completer_quote_characters, rl_line_buffer[scan]))
+ {
+ /* Found start of a quoted substring. */
+ quote_char = rl_line_buffer[scan];
+ rl_point = scan + 1;
+ /* Shell-like quoting conventions. */
+ if (quote_char == '\'')
+ found_quote |= RL_QF_SINGLE_QUOTE;
+ else if (quote_char == '"')
+ found_quote |= RL_QF_DOUBLE_QUOTE;
+ }
+ }
+ }
+
+ if (rl_point == end && quote_char == '\0')
+ {
+ /* We didn't find an unclosed quoted substring upon which to do
+ completion, so use the word break characters to find the
+ substring on which to complete. */
+ while (--rl_point)
+ {
+ scan = rl_line_buffer[rl_point];
+
+ if (strchr (rl_completer_word_break_characters, scan) == 0)
+ continue;
+
+ /* Call the application-specific function to tell us whether
+ this word break character is quoted and should be skipped. */
+ if (rl_char_is_quoted_p && found_quote &&
+ (*rl_char_is_quoted_p) (rl_line_buffer, rl_point))
+ continue;
+
+ /* Convoluted code, but it avoids an n^2 algorithm with calls
+ to char_is_quoted. */
+ break;
+ }
+ }
+
+ /* If we are at an unquoted word break, then advance past it. */
+ scan = rl_line_buffer[rl_point];
+
+ /* If there is an application-specific function to say whether or not
+ a character is quoted and we found a quote character, let that
+ function decide whether or not a character is a word break, even
+ if it is found in rl_completer_word_break_characters. */
+ if (rl_char_is_quoted_p)
+ isbrk = (found_quote == 0 ||
+ (*rl_char_is_quoted_p) (rl_line_buffer, rl_point) == 0) &&
+ strchr (rl_completer_word_break_characters, scan) != 0;
+ else
+ isbrk = strchr (rl_completer_word_break_characters, scan) != 0;
+
+ if (isbrk)
+ {
+ /* If the character that caused the word break was a quoting
+ character, then remember it as the delimiter. */
+ if (rl_basic_quote_characters && strchr (rl_basic_quote_characters, scan) && (end - rl_point) > 1)
+ delimiter = scan;
+
+ /* If the character isn't needed to determine something special
+ about what kind of completion to perform, then advance past it. */
+ if (rl_special_prefixes == 0 || strchr (rl_special_prefixes, scan) == 0)
+ rl_point++;
+ }
+
+ if (fp)
+ *fp = found_quote;
+ if (dp)
+ *dp = delimiter;
+
+ return (quote_char);
+}
+
+static char **
+gen_completion_matches (text, start, end, our_func, found_quote, quote_char)
+ char *text;
+ int start, end;
+ Function *our_func;
+ int found_quote, quote_char;
+{
+ char **matches, *temp;
+
+ /* If the user wants to TRY to complete, but then wants to give
+ up and use the default completion function, they set the
+ variable rl_attempted_completion_function. */
+ if (rl_attempted_completion_function)
+ {
+ matches = (*rl_attempted_completion_function) (text, start, end);
+
+ if (matches || rl_attempted_completion_over)
+ {
+ rl_attempted_completion_over = 0;
+ return (matches);
+ }
+ }
+
+ /* Beware -- we're stripping the quotes here. Do this only if we know
+ we are doing filename completion and the application has defined a
+ filename dequoting function. */
+ temp = (char *)NULL;
+ if (found_quote && our_func == (Function *)filename_completion_function &&
+ rl_filename_dequoting_function)
+ {
+ /* delete single and double quotes */
+ temp = (*rl_filename_dequoting_function) (text, quote_char);
+ text = temp; /* not freeing text is not a memory leak */
+ }
+
+ matches = completion_matches (text, our_func);
+ FREE (temp);
+ return matches;
+}
+
+/* Filter out duplicates in MATCHES. This frees up the strings in
+ MATCHES. */
+static char **
+remove_duplicate_matches (matches)
+ char **matches;
+{
+ char *lowest_common;
+ int i, j, newlen;
+ char dead_slot;
+ char **temp_array;
+
+ /* Sort the items. */
+ for (i = 0; matches[i]; i++)
+ ;
+
+ /* Sort the array without matches[0], since we need it to
+ stay in place no matter what. */
+ if (i)
+ qsort (matches+1, i-1, sizeof (char *), _rl_qsort_string_compare);
+
+ /* Remember the lowest common denominator for it may be unique. */
+ lowest_common = savestring (matches[0]);
+
+ for (i = newlen = 0; matches[i + 1]; i++)
+ {
+ if (strcmp (matches[i], matches[i + 1]) == 0)
+ {
+ free (matches[i]);
+ matches[i] = (char *)&dead_slot;
+ }
+ else
+ newlen++;
+ }
+
+ /* We have marked all the dead slots with (char *)&dead_slot.
+ Copy all the non-dead entries into a new array. */
+ temp_array = (char **)xmalloc ((3 + newlen) * sizeof (char *));
+ for (i = j = 1; matches[i]; i++)
+ {
+ if (matches[i] != (char *)&dead_slot)
+ temp_array[j++] = matches[i];
+ }
+ temp_array[j] = (char *)NULL;
+
+ if (matches[0] != (char *)&dead_slot)
+ free (matches[0]);
+
+ /* Place the lowest common denominator back in [0]. */
+ temp_array[0] = lowest_common;
+
+ /* If there is one string left, and it is identical to the
+ lowest common denominator, then the LCD is the string to
+ insert. */
+ if (j == 2 && strcmp (temp_array[0], temp_array[1]) == 0)
+ {
+ free (temp_array[1]);
+ temp_array[1] = (char *)NULL;
+ }
+ return (temp_array);
+}
+
+static void
+display_matches (matches)
+ char **matches;
+{
+ int len, count, limit, max, printed_len;
+ int i, j, k, l;
+ char *temp;
+
+ /* Move to the last visible line of a possibly-multiple-line command. */
+ _rl_move_vert (_rl_vis_botlin);
+
+ /* Handle simple case first. What if there is only one answer? */
+ if (matches[1] == 0)
+ {
+ temp = printable_part (matches[0]);
+ crlf ();
+ print_filename (temp, matches[0]);
+ crlf ();
+#if 0
+ rl_on_new_line ();
+#else
+ rl_forced_update_display ();
+ rl_display_fixed = 1;
+#endif
+ return;
+ }
+
+ /* There is more than one answer. Find out how many there are,
+ and find the maximum printed length of a single entry. */
+ for (max = 0, i = 1; matches[i]; i++)
+ {
+ temp = printable_part (matches[i]);
+ len = strlen (temp);
+
+ if (len > max)
+ max = len;
+ }
+
+ len = i - 1;
+
+ /* If there are many items, then ask the user if she really wants to
+ see them all. */
+ if (len >= rl_completion_query_items)
+ {
+ crlf ();
+ fprintf (rl_outstream, "Display all %d possibilities? (y or n)", len);
+ fflush (rl_outstream);
+ if (get_y_or_n () == 0)
+ {
+ crlf ();
+#if 0
+ rl_on_new_line ();
+#else
+ rl_forced_update_display ();
+ rl_display_fixed = 1;
+#endif
+ return;
+ }
+ }
+
+ /* How many items of MAX length can we fit in the screen window? */
+ max += 2;
+ limit = screenwidth / max;
+ if (limit != 1 && (limit * max == screenwidth))
+ limit--;
+
+ /* Avoid a possible floating exception. If max > screenwidth,
+ limit will be 0 and a divide-by-zero fault will result. */
+ if (limit == 0)
+ limit = 1;
+
+ /* How many iterations of the printing loop? */
+ count = (len + (limit - 1)) / limit;
+
+ /* Watch out for special case. If LEN is less than LIMIT, then
+ just do the inner printing loop.
+ 0 < len <= limit implies count = 1. */
+
+ /* Sort the items if they are not already sorted. */
+ if (rl_ignore_completion_duplicates == 0)
+ qsort (matches + 1, len, sizeof (char *), _rl_qsort_string_compare);
+
+ /* Print the sorted items, up-and-down alphabetically, like ls. */
+ crlf ();
+
+ for (i = 1; i <= count; i++)
+ {
+ for (j = 0, l = i; j < limit; j++)
+ {
+ if (l > len || matches[l] == 0)
+ break;
+ else
+ {
+ temp = printable_part (matches[l]);
+ printed_len = strlen (temp) + print_filename (temp, matches[l]);
+
+ if (j + 1 < limit)
+ for (k = 0; k < max - printed_len; k++)
+ putc (' ', rl_outstream);
+ }
+ l += count;
+ }
+ crlf ();
+ }
+
+#if 0
+ rl_on_new_line ();
+#else
+ rl_forced_update_display ();
+ rl_display_fixed = 1;
+#endif
+}
+
+static void
+insert_text (text, start, end)
+ char *text;
+ int start, end;
+{
+ rl_begin_undo_group ();
+ rl_delete_text (start, end + 1);
+ rl_point = start;
+ rl_insert_text (text);
+ rl_end_undo_group ();
+}
+
+static char *
+make_quoted_replacement (match, mtype, quote_char)
+ char *match;
+ int mtype, quote_char;
+{
+ int should_quote, do_replace;
+ char *replacement, qc;
+
+ /* If we are doing completion on quoted substrings, and any matches
+ contain any of the completer_word_break_characters, then auto-
+ matically prepend the substring with a quote character (just pick
+ the first one from the list of such) if it does not already begin
+ with a quote string. FIXME: Need to remove any such automatically
+ inserted quote character when it no longer is necessary, such as
+ if we change the string we are completing on and the new set of
+ matches don't require a quoted substring. */
+ replacement = match;
+
+ should_quote = match && rl_completer_quote_characters &&
+ rl_filename_completion_desired &&
+ rl_filename_quoting_desired;
+
+ if (should_quote)
+#if defined (SHELL)
+ should_quote = should_quote && (!quote_char || quote_char == '"' || quote_char == '\'');
+#else
+ should_quote = should_quote && !quote_char;
+#endif
+
+ if (should_quote)
+ {
+ /* If there is a single match, see if we need to quote it.
+ This also checks whether the common prefix of several
+ matches needs to be quoted. */
+ should_quote = rl_strpbrk (match, rl_filename_quote_characters) != 0;
+
+ do_replace = should_quote ? mtype : NO_MATCH;
+ if (do_replace != NO_MATCH)
+ {
+ /* Quote the replacement, since we found an embedded
+ word break character in a potential match. */
+ if (rl_filename_quoting_function)
+ {
+ qc = quote_char; /* must pass a (char *) to quoting function */
+ replacement = (*rl_filename_quoting_function)
+ (match, do_replace, &qc);
+ quote_char = qc;
+ }
+ }
+ }
+ return (replacement);
+}
+
+static void
+insert_match (match, start, mtype, quote_char)
+ char *match;
+ int start, mtype, quote_char;
+{
+ char *replacement;
+
+ replacement = make_quoted_replacement (match, mtype, quote_char);
+
+ /* Now insert the match. */
+ if (replacement)
+ {
+ /* Don't double an opening quote character. */
+ if (quote_char && start && rl_line_buffer[start - 1] == quote_char &&
+ replacement[0] == quote_char)
+ start--;
+ insert_text (replacement, start, rl_point - 1);
+ if (replacement != match)
+ free (replacement);
+ }
+}
+
+/* Append any necessary closing quote and a separator character to the
+ just-inserted match. If the user has specified that directories
+ should be marked by a trailing `/', append one of those instead. The
+ default trailing character */
+static void
+append_to_match (text, delimiter, quote_char)
+ char *text;
+ int delimiter, quote_char;
+{
+ char temp_string[4], *filename;
+ int temp_string_index;
+ struct stat finfo;
+
+ temp_string_index = 0;
+ if (quote_char && rl_point && rl_line_buffer[rl_point - 1] != quote_char)
+ temp_string[temp_string_index++] = quote_char;
+
+ if (delimiter)
+ temp_string[temp_string_index++] = delimiter;
+ else if (rl_completion_append_character)
+ temp_string[temp_string_index++] = rl_completion_append_character;
+
+ temp_string[temp_string_index++] = '\0';
+
+ if (rl_filename_completion_desired)
+ {
+ filename = tilde_expand (text);
+ if (stat (filename, &finfo) == 0 && S_ISDIR (finfo.st_mode))
+ {
+ if (_rl_complete_mark_directories && rl_line_buffer[rl_point] != '/')
+ rl_insert_text ("/");
+ }
+ else
+ {
+ if (rl_point == rl_end)
+ rl_insert_text (temp_string);
+ }
+ free (filename);
+ }
+ else
+ {
+ if (rl_point == rl_end)
+ rl_insert_text (temp_string);
+ }
+}
+
+static void
+insert_all_matches (matches, point, quote_char)
+ char **matches;
+ int point, quote_char;
+{
+ int i;
+ char *rp;
+
+ rl_begin_undo_group ();
+ /* remove any opening quote character; make_quoted_replacement will add
+ it back. */
+ if (quote_char && point && rl_line_buffer[point - 1] == quote_char)
+ point--;
+ rl_delete_text (point, rl_point);
+ rl_point = point;
+
+ if (matches[1])
+ {
+ for (i = 1; matches[i]; i++)
+ {
+ rp = make_quoted_replacement (matches[i], SINGLE_MATCH, quote_char);
+ rl_insert_text (rp);
+ rl_insert_text (" ");
+ if (rp != matches[i])
+ free (rp);
+ }
+ }
+ else
+ {
+ rp = make_quoted_replacement (matches[0], SINGLE_MATCH, quote_char);
+ rl_insert_text (rp);
+ rl_insert_text (" ");
+ if (rp != matches[0])
+ free (rp);
+ }
+ rl_end_undo_group ();
+}
+
+/* Complete the word at or before point.
+ WHAT_TO_DO says what to do with the completion.
+ `?' means list the possible completions.
+ TAB means do standard completion.
+ `*' means insert all of the possible completions.
+ `!' means to do standard completion, and list all possible completions if
+ there is more than one. */
+int
+rl_complete_internal (what_to_do)
+ int what_to_do;
+{
+ char **matches, **temp_matches;
+ Function *our_func;
+ int start, end, delimiter, found_quote, nmatch, i;
+ char *text, *saved_line_buffer, *t;
+ char quote_char;
+
+ saved_line_buffer = rl_line_buffer ? savestring (rl_line_buffer) : (char *)NULL;
+
+ our_func = rl_completion_entry_function
+ ? rl_completion_entry_function
+ : (Function *)filename_completion_function;
+
+ /* Only the completion entry function can change these. */
+ rl_filename_completion_desired = 0;
+ rl_filename_quoting_desired = 1;
+
+ rl_completion_type = what_to_do;
+
+ /* We now look backwards for the start of a filename/variable word. */
+ end = rl_point;
+
+ found_quote = delimiter = 0;
+ quote_char = '\0';
+
+ if (rl_point)
+ /* This (possibly) changes rl_point. If it returns a non-zero char,
+ we know we have an open quote. */
+ quote_char = find_completion_word (&found_quote, &delimiter);
+
+ start = rl_point;
+ rl_point = end;
+
+ text = rl_copy_text (start, end);
+ matches = gen_completion_matches (text, start, end, our_func, found_quote, quote_char);
+ free (text);
+
+ if (matches == 0)
+ {
+ ding ();
+ FREE (saved_line_buffer);
+ return 0;
+ }
+
+ /* It seems to me that in all the cases we handle we would like
+ to ignore duplicate possiblilities. Scan for the text to
+ insert being identical to the other completions. */
+ if (rl_ignore_completion_duplicates)
+ {
+ temp_matches = remove_duplicate_matches (matches);
+ free (matches);
+ matches = temp_matches;
+ }
+
+ /* If we are matching filenames, then here is our chance to
+ do clever processing by re-examining the list. Call the
+ ignore function with the array as a parameter. It can
+ munge the array, deleting matches as it desires. */
+ if (rl_ignore_some_completions_function &&
+ our_func == (Function *)filename_completion_function)
+ {
+ for (nmatch = 1; matches[nmatch]; nmatch++)
+ ;
+ (void)(*rl_ignore_some_completions_function) (matches);
+ if (matches == 0 || matches[0] == 0)
+ {
+ FREE (matches);
+ ding ();
+ FREE (saved_line_buffer);
+ return 0;
+ }
+ else
+ {
+ /* If we removed some matches, recompute the common prefix. */
+ for (i = 1; matches[i]; i++)
+ ;
+ if (i > 1 && i < nmatch)
+ {
+ t = matches[0];
+ compute_lcd_of_matches (matches, i - 1, text);
+ FREE (t);
+ }
+ }
+ }
+
+ switch (what_to_do)
+ {
+ case TAB:
+ case '!':
+ /* Insert the first match with proper quoting. */
+ if (*matches[0])
+ insert_match (matches[0], start, matches[1] ? MULT_MATCH : SINGLE_MATCH, quote_char);
+
+ /* If there are more matches, ring the bell to indicate.
+ If we are in vi mode, Posix.2 says to not ring the bell.
+ If the `show-all-if-ambiguous' variable is set, display
+ all the matches immediately. Otherwise, if this was the
+ only match, and we are hacking files, check the file to
+ see if it was a directory. If so, and the `mark-directories'
+ variable is set, add a '/' to the name. If not, and we
+ are at the end of the line, then add a space. */
+ if (matches[1])
+ {
+ if (what_to_do == '!')
+ {
+ display_matches (matches);
+ break;
+ }
+ else if (rl_editing_mode != vi_mode)
+ ding (); /* There are other matches remaining. */
+ }
+ else
+ append_to_match (matches[0], delimiter, quote_char);
+
+ break;
+
+ case '*':
+ insert_all_matches (matches, start, quote_char);
+ break;
+
+ case '?':
+ display_matches (matches);
+ break;
+
+ default:
+ fprintf (stderr, "\r\nreadline: bad value %d for what_to_do in rl_complete\n", what_to_do);
+ ding ();
+ FREE (saved_line_buffer);
+ return 1;
+ }
+
+ for (i = 0; matches[i]; i++)
+ free (matches[i]);
+ free (matches);
+
+ /* Check to see if the line has changed through all of this manipulation. */
+ if (saved_line_buffer)
+ {
+ completion_changed_buffer = strcmp (rl_line_buffer, saved_line_buffer) != 0;
+ free (saved_line_buffer);
+ }
+
+ return 0;
+}
+
+#if defined (VISIBLE_STATS)
+/* Return the character which best describes FILENAME.
+ `@' for symbolic links
+ `/' for directories
+ `*' for executables
+ `=' for sockets
+ `|' for FIFOs
+ `%' for character special devices
+ `#' for block special devices */
+static int
+stat_char (filename)
+ char *filename;
+{
+ struct stat finfo;
+ int character, r;
+
+#if defined (HAVE_LSTAT) && defined (S_ISLNK)
+ r = lstat (filename, &finfo);
+#else
+ r = stat (filename, &finfo);
+#endif
+
+ if (r == -1)
+ return (0);
+
+ character = 0;
+ if (S_ISDIR (finfo.st_mode))
+ character = '/';
+ else if (S_ISCHR (finfo.st_mode))
+ character = '%';
+ else if (S_ISBLK (finfo.st_mode))
+ character = '#';
+#if defined (S_ISLNK)
+ else if (S_ISLNK (finfo.st_mode))
+ character = '@';
+#endif /* S_ISLNK */
+#if defined (S_ISSOCK)
+ else if (S_ISSOCK (finfo.st_mode))
+ character = '=';
+#endif /* S_ISSOCK */
+#if defined (S_ISFIFO)
+ else if (S_ISFIFO (finfo.st_mode))
+ character = '|';
+#endif
+ else if (S_ISREG (finfo.st_mode))
+ {
+ if (access (filename, X_OK) == 0)
+ character = '*';
+ }
+ return (character);
+}
+#endif /* VISIBLE_STATS */
+
+/* A completion function for usernames.
+ TEXT contains a partial username preceded by a random
+ character (usually `~'). */
+char *
+username_completion_function (text, state)
+ int state;
+ char *text;
+{
+#if defined (__GO32__) || defined (__WIN32__)
+ return (char *)NULL;
+#else /* !__GO32__ */
+ static char *username = (char *)NULL;
+ static struct passwd *entry;
+ static int namelen, first_char, first_char_loc;
+ char *value;
+
+ if (state == 0)
+ {
+ FREE (username);
+
+ first_char = *text;
+ first_char_loc = first_char == '~';
+
+ username = savestring (&text[first_char_loc]);
+ namelen = strlen (username);
+ setpwent ();
+ }
+
+ while (entry = getpwent ())
+ {
+ /* Null usernames should result in all users as possible completions. */
+ if (namelen == 0 || (STREQN (username, entry->pw_name, namelen)))
+ break;
+ }
+
+ if (entry == 0)
+ {
+ endpwent ();
+ return ((char *)NULL);
+ }
+ else
+ {
+ value = xmalloc (2 + strlen (entry->pw_name));
+
+ *value = *text;
+
+ strcpy (value + first_char_loc, entry->pw_name);
+
+ if (first_char == '~')
+ rl_filename_completion_desired = 1;
+
+ return (value);
+ }
+#endif /* !__GO32__ */
+}
+
+/* **************************************************************** */
+/* */
+/* Completion */
+/* */
+/* **************************************************************** */
+
+/* Non-zero means that case is not significant in completion. */
+int completion_case_fold = 0;
+
+/* Find the common prefix of the list of matches, and put it into
+ matches[0]. */
+static int
+compute_lcd_of_matches (match_list, matches, text)
+ char **match_list;
+ int matches;
+ char *text;
+{
+ register int i, c1, c2, si;
+ int low; /* Count of max-matched characters. */
+
+ /* If only one match, just use that. Otherwise, compare each
+ member of the list with the next, finding out where they
+ stop matching. */
+ if (matches == 1)
+ {
+ match_list[0] = match_list[1];
+ match_list[1] = (char *)NULL;
+ return 1;
+ }
+
+ for (i = 1, low = 100000; i < matches; i++)
+ {
+ if (completion_case_fold)
+ {
+ for (si = 0;
+ (c1 = _rl_to_lower(match_list[i][si])) &&
+ (c2 = _rl_to_lower(match_list[i + 1][si]));
+ si++)
+ if (c1 != c2)
+ break;
+ }
+ else
+ {
+ for (si = 0;
+ (c1 = match_list[i][si]) &&
+ (c2 = match_list[i + 1][si]);
+ si++)
+ if (c1 != c2)
+ break;
+ }
+
+ if (low > si)
+ low = si;
+ }
+
+ /* If there were multiple matches, but none matched up to even the
+ first character, and the user typed something, use that as the
+ value of matches[0]. */
+ if (low == 0 && text && *text)
+ {
+ match_list[0] = xmalloc (strlen (text) + 1);
+ strcpy (match_list[0], text);
+ }
+ else
+ {
+ match_list[0] = xmalloc (low + 1);
+ strncpy (match_list[0], match_list[1], low);
+ match_list[0][low] = '\0';
+ }
+
+ return matches;
+}
+
+/* Return an array of (char *) which is a list of completions for TEXT.
+ If there are no completions, return a NULL pointer.
+ The first entry in the returned array is the substitution for TEXT.
+ The remaining entries are the possible completions.
+ The array is terminated with a NULL pointer.
+
+ ENTRY_FUNCTION is a function of two args, and returns a (char *).
+ The first argument is TEXT.
+ The second is a state argument; it should be zero on the first call, and
+ non-zero on subsequent calls. It returns a NULL pointer to the caller
+ when there are no more matches.
+ */
+char **
+completion_matches (text, entry_function)
+ char *text;
+ CPFunction *entry_function;
+{
+ /* Number of slots in match_list. */
+ int match_list_size;
+
+ /* The list of matches. */
+ char **match_list;
+
+ /* Number of matches actually found. */
+ int matches;
+
+ /* Temporary string binder. */
+ char *string;
+
+ matches = 0;
+ match_list_size = 10;
+ match_list = (char **)xmalloc ((match_list_size + 1) * sizeof (char *));
+ match_list[1] = (char *)NULL;
+
+ while (string = (*entry_function) (text, matches))
+ {
+ if (matches + 1 == match_list_size)
+ match_list = (char **)xrealloc
+ (match_list, ((match_list_size += 10) + 1) * sizeof (char *));
+
+ match_list[++matches] = string;
+ match_list[matches + 1] = (char *)NULL;
+ }
+
+ /* If there were any matches, then look through them finding out the
+ lowest common denominator. That then becomes match_list[0]. */
+ if (matches)
+ compute_lcd_of_matches (match_list, matches, text);
+ else /* There were no matches. */
+ {
+ free (match_list);
+ match_list = (char **)NULL;
+ }
+ return (match_list);
+}
+
+/* Okay, now we write the entry_function for filename completion. In the
+ general case. Note that completion in the shell is a little different
+ because of all the pathnames that must be followed when looking up the
+ completion for a command. */
+char *
+filename_completion_function (text, state)
+ int state;
+ char *text;
+{
+ static DIR *directory;
+ static char *filename = (char *)NULL;
+ static char *dirname = (char *)NULL;
+ static char *users_dirname = (char *)NULL;
+ static int filename_len;
+ char *temp;
+ int dirlen;
+ struct dirent *entry;
+
+ /* If we don't have any state, then do some initialization. */
+ if (state == 0)
+ {
+ FREE (dirname);
+ FREE (filename);
+ FREE (users_dirname);
+
+ filename = savestring (text);
+ if (*text == 0)
+ text = ".";
+ dirname = savestring (text);
+
+ temp = strrchr (dirname, '/');
+
+ if (temp)
+ {
+ strcpy (filename, ++temp);
+ *temp = '\0';
+ }
+ else
+ {
+ dirname[0] = '.';
+ dirname[1] = '\0';
+ }
+
+ /* We aren't done yet. We also support the "~user" syntax. */
+
+ /* Save the version of the directory that the user typed. */
+ users_dirname = savestring (dirname);
+
+ if (*dirname == '~')
+ {
+ temp = tilde_expand (dirname);
+ free (dirname);
+ dirname = temp;
+ }
+
+ if (rl_directory_completion_hook && (*rl_directory_completion_hook) (&dirname))
+ {
+ free (users_dirname);
+ users_dirname = savestring (dirname);
+ }
+
+ directory = opendir (dirname);
+ filename_len = strlen (filename);
+
+ rl_filename_completion_desired = 1;
+ }
+
+ /* At this point we should entertain the possibility of hacking wildcarded
+ filenames, like /usr/man/man<WILD>/te<TAB>. If the directory name
+ contains globbing characters, then build an array of directories, and
+ then map over that list while completing. */
+ /* *** UNIMPLEMENTED *** */
+
+ /* Now that we have some state, we can read the directory. */
+
+ entry = (struct dirent *)NULL;
+ while (directory && (entry = readdir (directory)))
+ {
+ /* Special case for no filename.
+ All entries except "." and ".." match. */
+ if (filename_len == 0)
+ {
+ if (entry->d_name[0] != '.' ||
+ (entry->d_name[1] &&
+ (entry->d_name[1] != '.' || entry->d_name[2])))
+ break;
+ }
+ else
+ {
+ /* Otherwise, if these match up to the length of filename, then
+ it is a match. */
+ if ((entry->d_name[0] == filename[0]) &&
+ (((int)D_NAMLEN (entry)) >= filename_len) &&
+ (strncmp (filename, entry->d_name, filename_len) == 0))
+ break;
+ }
+ }
+
+ if (entry == 0)
+ {
+ if (directory)
+ {
+ closedir (directory);
+ directory = (DIR *)NULL;
+ }
+ if (dirname)
+ {
+ free (dirname);
+ dirname = (char *)NULL;
+ }
+ if (filename)
+ {
+ free (filename);
+ filename = (char *)NULL;
+ }
+ if (users_dirname)
+ {
+ free (users_dirname);
+ users_dirname = (char *)NULL;
+ }
+
+ return (char *)NULL;
+ }
+ else
+ {
+ /* dirname && (strcmp (dirname, ".") != 0) */
+ if (dirname && (dirname[0] != '.' || dirname[1]))
+ {
+ if (rl_complete_with_tilde_expansion && *users_dirname == '~')
+ {
+ dirlen = strlen (dirname);
+ temp = xmalloc (2 + dirlen + D_NAMLEN (entry));
+ strcpy (temp, dirname);
+ /* Canonicalization cuts off any final slash present. We
+ may need to add it back. */
+ if (dirname[dirlen - 1] != '/')
+ {
+ temp[dirlen++] = '/';
+ temp[dirlen] = '\0';
+ }
+ }
+ else
+ {
+ dirlen = strlen (users_dirname);
+ temp = xmalloc (1 + dirlen + D_NAMLEN (entry));
+ strcpy (temp, users_dirname);
+ }
+
+ strcpy (temp + dirlen, entry->d_name); /* strcat (temp, entry->d_name); */
+ }
+ else
+ temp = savestring (entry->d_name);
+
+ return (temp);
+ }
+}
+
+/* A function for simple tilde expansion. */
+int
+rl_tilde_expand (ignore, key)
+ int ignore, key;
+{
+ register int start, end;
+ char *homedir, *temp;
+ int len;
+
+ end = rl_point;
+ start = end - 1;
+
+ if (rl_point == rl_end && rl_line_buffer[rl_point] == '~')
+ {
+ homedir = tilde_expand ("~");
+ insert_text (homedir, start, end);
+ return (0);
+ }
+ else if (rl_line_buffer[start] != '~')
+ {
+ for (; !whitespace (rl_line_buffer[start]) && start >= 0; start--)
+ ;
+ start++;
+ }
+
+ end = start;
+ do
+ end++;
+ while (whitespace (rl_line_buffer[end]) == 0 && end < rl_end);
+
+ if (whitespace (rl_line_buffer[end]) || end >= rl_end)
+ end--;
+
+ /* If the first character of the current word is a tilde, perform
+ tilde expansion and insert the result. If not a tilde, do
+ nothing. */
+ if (rl_line_buffer[start] == '~')
+ {
+ len = end - start + 1;
+ temp = xmalloc (len + 1);
+ strncpy (temp, rl_line_buffer + start, len);
+ temp[len] = '\0';
+ homedir = tilde_expand (temp);
+ free (temp);
+
+ insert_text (homedir, start, end);
+ }
+
+ return (0);
+}
+
+/* Find the first occurrence in STRING1 of any character from STRING2.
+ Return a pointer to the character in STRING1. */
+static char *
+rl_strpbrk (string1, string2)
+ char *string1, *string2;
+{
+ register char *scan;
+
+ for (; *string1; string1++)
+ {
+ for (scan = string2; *scan; scan++)
+ {
+ if (*string1 == *scan)
+ {
+ return (string1);
+ }
+ }
+ }
+ return ((char *)NULL);
+}
diff --git a/contrib/libreadline/display.c b/contrib/libreadline/display.c
new file mode 100644
index 0000000..c0dff1f5
--- /dev/null
+++ b/contrib/libreadline/display.c
@@ -0,0 +1,1503 @@
+/* display.c -- readline redisplay facility. */
+
+/* Copyright (C) 1987, 1989, 1992 Free Software Foundation, Inc.
+
+ This file is part of the GNU Readline Library, a library for
+ reading lines of text with interactive input and history editing.
+
+ The GNU Readline Library is free software; you can redistribute it
+ and/or modify it under the terms of the GNU General Public License
+ as published by the Free Software Foundation; either version 1, or
+ (at your option) any later version.
+
+ The GNU Readline Library is distributed in the hope that it will be
+ useful, but WITHOUT ANY WARRANTY; without even the implied warranty
+ of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ The GNU General Public License is often shipped with GNU software, and
+ is generally kept in a file called COPYING or LICENSE. If you do not
+ have a copy of the license, write to the Free Software Foundation,
+ 675 Mass Ave, Cambridge, MA 02139, USA. */
+#define READLINE_LIBRARY
+
+#if defined (HAVE_CONFIG_H)
+# include <config.h>
+#endif
+
+#include <stdio.h>
+#include <sys/types.h>
+
+#if defined (HAVE_UNISTD_H)
+# include <unistd.h>
+#endif /* HAVE_UNISTD_H */
+
+#if defined (HAVE_STDLIB_H)
+# include <stdlib.h>
+#else
+# include "ansi_stdlib.h"
+#endif /* HAVE_STDLIB_H */
+
+#include "posixstat.h"
+
+/* System-specific feature definitions and include files. */
+#include "rldefs.h"
+
+/* Termcap library stuff. */
+#include "tcap.h"
+
+/* Some standard library routines. */
+#include "readline.h"
+#include "history.h"
+
+#if !defined (strchr) && !defined (__STDC__)
+extern char *strchr (), *strrchr ();
+#endif /* !strchr && !__STDC__ */
+
+/* Global and pseudo-global variables and functions
+ imported from readline.c. */
+extern char *rl_prompt;
+extern int readline_echoing_p;
+
+extern int _rl_output_meta_chars;
+extern int _rl_horizontal_scroll_mode;
+extern int _rl_mark_modified_lines;
+extern int _rl_prefer_visible_bell;
+
+/* Variables and functions imported from terminal.c */
+extern void _rl_output_some_chars ();
+extern int _rl_output_character_function ();
+extern int _rl_backspace ();
+
+extern char *term_clreol, *term_im, *term_ic, *term_ei, *term_DC;
+extern char *term_up, *term_dc, *term_cr, *term_IC;
+extern int screenheight, screenwidth, screenchars;
+extern int terminal_can_insert, _rl_term_autowrap;
+
+/* Pseudo-global functions (local to the readline library) exported
+ by this file. */
+void _rl_move_cursor_relative (), _rl_output_some_chars ();
+void _rl_move_vert ();
+
+static void update_line (), clear_to_eol (), space_to_eol ();
+static void delete_chars (), insert_some_chars ();
+static void cr ();
+
+static int *inv_lbreaks, *vis_lbreaks;
+
+extern char *xmalloc (), *xrealloc ();
+
+/* Heuristic used to decide whether it is faster to move from CUR to NEW
+ by backing up or outputting a carriage return and moving forward. */
+#define CR_FASTER(new, cur) (((new) + 1) < ((cur) - (new)))
+
+/* **************************************************************** */
+/* */
+/* Display stuff */
+/* */
+/* **************************************************************** */
+
+/* This is the stuff that is hard for me. I never seem to write good
+ display routines in C. Let's see how I do this time. */
+
+/* (PWP) Well... Good for a simple line updater, but totally ignores
+ the problems of input lines longer than the screen width.
+
+ update_line and the code that calls it makes a multiple line,
+ automatically wrapping line update. Careful attention needs
+ to be paid to the vertical position variables. */
+
+/* Keep two buffers; one which reflects the current contents of the
+ screen, and the other to draw what we think the new contents should
+ be. Then compare the buffers, and make whatever changes to the
+ screen itself that we should. Finally, make the buffer that we
+ just drew into be the one which reflects the current contents of the
+ screen, and place the cursor where it belongs.
+
+ Commands that want to can fix the display themselves, and then let
+ this function know that the display has been fixed by setting the
+ RL_DISPLAY_FIXED variable. This is good for efficiency. */
+
+/* Application-specific redisplay function. */
+VFunction *rl_redisplay_function = rl_redisplay;
+
+/* Global variables declared here. */
+/* What YOU turn on when you have handled all redisplay yourself. */
+int rl_display_fixed = 0;
+
+int _rl_suppress_redisplay = 0;
+
+/* The stuff that gets printed out before the actual text of the line.
+ This is usually pointing to rl_prompt. */
+char *rl_display_prompt = (char *)NULL;
+
+/* Pseudo-global variables declared here. */
+/* The visible cursor position. If you print some text, adjust this. */
+int _rl_last_c_pos = 0;
+int _rl_last_v_pos = 0;
+
+/* Number of lines currently on screen minus 1. */
+int _rl_vis_botlin = 0;
+
+/* Variables used only in this file. */
+/* The last left edge of text that was displayed. This is used when
+ doing horizontal scrolling. It shifts in thirds of a screenwidth. */
+static int last_lmargin;
+
+/* The line display buffers. One is the line currently displayed on
+ the screen. The other is the line about to be displayed. */
+static char *visible_line = (char *)NULL;
+static char *invisible_line = (char *)NULL;
+
+/* A buffer for `modeline' messages. */
+static char msg_buf[128];
+
+/* Non-zero forces the redisplay even if we thought it was unnecessary. */
+static int forced_display;
+
+/* Default and initial buffer size. Can grow. */
+static int line_size = 1024;
+
+static char *local_prompt, *local_prompt_prefix;
+static int visible_length, prefix_length;
+
+/* The number of invisible characters in the line currently being
+ displayed on the screen. */
+static int visible_wrap_offset;
+
+/* static so it can be shared between rl_redisplay and update_line */
+static int wrap_offset;
+
+/* The index of the last invisible_character in the prompt string. */
+static int last_invisible;
+
+/* The length (buffer offset) of the first line of the last (possibly
+ multi-line) buffer displayed on the screen. */
+static int visible_first_line_len;
+
+/* Expand the prompt string S and return the number of visible
+ characters in *LP, if LP is not null. This is currently more-or-less
+ a placeholder for expansion. LIP, if non-null is a place to store the
+ index of the last invisible character in ther eturned string. */
+
+/* Current implementation:
+ \001 (^A) start non-visible characters
+ \002 (^B) end non-visible characters
+ all characters except \001 and \002 (following a \001) are copied to
+ the returned string; all characters except those between \001 and
+ \002 are assumed to be `visible'. */
+
+static char *
+expand_prompt (pmt, lp, lip)
+ char *pmt;
+ int *lp, *lip;
+{
+ char *r, *ret, *p;
+ int l, rl, last, ignoring;
+
+ /* Short-circuit if we can. */
+ if (strchr (pmt, RL_PROMPT_START_IGNORE) == 0)
+ {
+ r = savestring (pmt);
+ if (lp)
+ *lp = strlen (r);
+ return r;
+ }
+
+ l = strlen (pmt);
+ r = ret = xmalloc (l + 1);
+
+ for (rl = ignoring = last = 0, p = pmt; p && *p; p++)
+ {
+ /* This code strips the invisible character string markers
+ RL_PROMPT_START_IGNORE and RL_PROMPT_END_IGNORE */
+ if (*p == RL_PROMPT_START_IGNORE)
+ {
+ ignoring++;
+ continue;
+ }
+ else if (ignoring && *p == RL_PROMPT_END_IGNORE)
+ {
+ ignoring = 0;
+ last = r - ret - 1;
+ continue;
+ }
+ else
+ {
+ *r++ = *p;
+ if (!ignoring)
+ rl++;
+ }
+ }
+
+ *r = '\0';
+ if (lp)
+ *lp = rl;
+ if (lip)
+ *lip = last;
+ return ret;
+}
+
+/*
+ * Expand the prompt string into the various display components, if
+ * necessary.
+ *
+ * local_prompt = expanded last line of string in rl_display_prompt
+ * (portion after the final newline)
+ * local_prompt_prefix = portion before last newline of rl_display_prompt,
+ * expanded via expand_prompt
+ * visible_length = number of visible characters in local_prompt
+ * prefix_length = number of visible characters in local_prompt_prefix
+ *
+ * This function is called once per call to readline(). It may also be
+ * called arbitrarily to expand the primary prompt.
+ *
+ * The return value is the number of visible characters on the last line
+ * of the (possibly multi-line) prompt.
+ */
+int
+rl_expand_prompt (prompt)
+ char *prompt;
+{
+ char *p, *t;
+ int c;
+
+ /* Clear out any saved values. */
+ if (local_prompt)
+ free (local_prompt);
+ if (local_prompt_prefix)
+ free (local_prompt_prefix);
+ local_prompt = local_prompt_prefix = (char *)0;
+ last_invisible = 0;
+
+ if (prompt == 0 || *prompt == 0)
+ return (0);
+
+ p = strrchr (prompt, '\n');
+ if (!p)
+ {
+ /* The prompt is only one line. */
+ local_prompt = expand_prompt (prompt, &visible_length, &last_invisible);
+ local_prompt_prefix = (char *)0;
+ return (visible_length);
+ }
+ else
+ {
+ /* The prompt spans multiple lines. */
+ t = ++p;
+ local_prompt = expand_prompt (p, &visible_length, &last_invisible);
+ c = *t; *t = '\0';
+ /* The portion of the prompt string up to and including the
+ final newline is now null-terminated. */
+ local_prompt_prefix = expand_prompt (prompt, &prefix_length, (int *)NULL);
+ *t = c;
+ return (prefix_length);
+ }
+}
+
+/* Basic redisplay algorithm. */
+void
+rl_redisplay ()
+{
+ register int in, out, c, linenum, cursor_linenum;
+ register char *line;
+ int c_pos, inv_botlin, lb_botlin, lb_linenum;
+ int newlines, lpos;
+ char *prompt_this_line;
+
+ if (!readline_echoing_p)
+ return;
+
+ if (!rl_display_prompt)
+ rl_display_prompt = "";
+
+ if (invisible_line == 0)
+ {
+ visible_line = xmalloc (line_size);
+ invisible_line = xmalloc (line_size);
+ for (in = 0; in < line_size; in++)
+ {
+ visible_line[in] = 0;
+ invisible_line[in] = 1;
+ }
+
+ /* should be enough, but then again, this is just for testing. */
+ inv_lbreaks = (int *)malloc (256 * sizeof (int));
+ vis_lbreaks = (int *)malloc (256 * sizeof (int));
+ inv_lbreaks[0] = vis_lbreaks[0] = 0;
+
+ rl_on_new_line ();
+ }
+
+ /* Draw the line into the buffer. */
+ c_pos = -1;
+
+ line = invisible_line;
+ out = inv_botlin = 0;
+
+ /* Mark the line as modified or not. We only do this for history
+ lines. */
+ if (_rl_mark_modified_lines && current_history () && rl_undo_list)
+ {
+ line[out++] = '*';
+ line[out] = '\0';
+ }
+
+ /* If someone thought that the redisplay was handled, but the currently
+ visible line has a different modification state than the one about
+ to become visible, then correct the caller's misconception. */
+ if (visible_line[0] != invisible_line[0])
+ rl_display_fixed = 0;
+
+ /* If the prompt to be displayed is the `primary' readline prompt (the
+ one passed to readline()), use the values we have already expanded.
+ If not, use what's already in rl_display_prompt. WRAP_OFFSET is the
+ number of non-visible characters in the prompt string. */
+ if (rl_display_prompt == rl_prompt || local_prompt)
+ {
+ int local_len = local_prompt ? strlen (local_prompt) : 0;
+ if (local_prompt_prefix && forced_display)
+ _rl_output_some_chars (local_prompt_prefix, strlen (local_prompt_prefix));
+
+ if (local_len > 0)
+ {
+ strncpy (line + out, local_prompt, local_len);
+ out += local_len;
+ }
+ line[out] = '\0';
+ wrap_offset = local_len - visible_length;
+ }
+ else
+ {
+ int pmtlen;
+ prompt_this_line = strrchr (rl_display_prompt, '\n');
+ if (!prompt_this_line)
+ prompt_this_line = rl_display_prompt;
+ else
+ {
+ prompt_this_line++;
+ if (forced_display)
+ {
+ _rl_output_some_chars (rl_display_prompt, prompt_this_line - rl_display_prompt);
+ /* Make sure we are at column zero even after a newline,
+ regardless of the state of terminal output processing. */
+ if (prompt_this_line[-2] != '\r')
+ cr ();
+ }
+ }
+
+ pmtlen = strlen (prompt_this_line);
+ strncpy (line + out, prompt_this_line, pmtlen);
+ out += pmtlen;
+ line[out] = '\0';
+ wrap_offset = 0;
+ }
+
+#define CHECK_LPOS() \
+ do { \
+ lpos++; \
+ if (lpos >= screenwidth) \
+ { \
+ inv_lbreaks[++newlines] = out; \
+ lpos = 0; \
+ } \
+ } while (0)
+
+ /* inv_lbreaks[i] is where line i starts in the buffer. */
+ inv_lbreaks[newlines = 0] = 0;
+
+ for (in = 0, lpos = out - wrap_offset; in < rl_end; in++)
+ {
+ c = (unsigned char)rl_line_buffer[in];
+
+ if (out + 8 >= line_size) /* XXX - 8 for \t */
+ {
+ line_size *= 2;
+ visible_line = xrealloc (visible_line, line_size);
+ invisible_line = xrealloc (invisible_line, line_size);
+ line = invisible_line;
+ }
+
+ if (in == rl_point)
+ {
+ c_pos = out;
+ lb_linenum = newlines;
+ }
+
+ if (META_CHAR (c))
+ {
+ if (_rl_output_meta_chars == 0)
+ {
+ sprintf (line + out, "\\%o", c);
+
+ if (lpos + 4 >= screenwidth)
+ {
+ register int temp;
+
+ temp = screenwidth - lpos;
+ inv_lbreaks[++newlines] = out + temp;
+ lpos = 4 - temp;
+ }
+ else
+ lpos += 4;
+
+ out += 4;
+ }
+ else
+ {
+ line[out++] = c;
+ CHECK_LPOS();
+ }
+ }
+#if defined (DISPLAY_TABS)
+ else if (c == '\t')
+ {
+ register int temp, newout;
+ newout = (out | (int)7) + 1;
+ temp = newout - out;
+ if (lpos + temp >= screenwidth)
+ {
+ register int temp2;
+ temp2 = screenwidth - lpos;
+ inv_lbreaks[++newlines] = out + temp2;
+ lpos = temp - temp2;
+ while (out < newout)
+ line[out++] = ' ';
+ }
+ else
+ {
+ while (out < newout)
+ line[out++] = ' ';
+ lpos += temp;
+ }
+ }
+#endif
+ else if (c == '\n' && _rl_horizontal_scroll_mode == 0 && term_up && *term_up)
+ {
+ line[out++] = '\0'; /* XXX - sentinel */
+ inv_lbreaks[++newlines] = out;
+ lpos = 0;
+ }
+ else if (CTRL_CHAR (c) || c == RUBOUT)
+ {
+ line[out++] = '^';
+ CHECK_LPOS();
+ line[out++] = CTRL_CHAR (c) ? UNCTRL (c) : '?';
+ CHECK_LPOS();
+ }
+ else
+ {
+ line[out++] = c;
+ CHECK_LPOS();
+ }
+ }
+ line[out] = '\0';
+ if (c_pos < 0)
+ {
+ c_pos = out;
+ lb_linenum = newlines;
+ }
+
+ inv_botlin = lb_botlin = newlines;
+ inv_lbreaks[newlines+1] = out;
+ cursor_linenum = lb_linenum;
+
+ /* C_POS == position in buffer where cursor should be placed. */
+
+ /* PWP: now is when things get a bit hairy. The visible and invisible
+ line buffers are really multiple lines, which would wrap every
+ (screenwidth - 1) characters. Go through each in turn, finding
+ the changed region and updating it. The line order is top to bottom. */
+
+ /* If we can move the cursor up and down, then use multiple lines,
+ otherwise, let long lines display in a single terminal line, and
+ horizontally scroll it. */
+
+ if (_rl_horizontal_scroll_mode == 0 && term_up && *term_up)
+ {
+ int nleft, pos, changed_screen_line;
+
+ if (!rl_display_fixed || forced_display)
+ {
+ forced_display = 0;
+
+ /* If we have more than a screenful of material to display, then
+ only display a screenful. We should display the last screen,
+ not the first. */
+ if (out >= screenchars)
+ out = screenchars - 1;
+
+ /* The first line is at character position 0 in the buffer. The
+ second and subsequent lines start at inv_lbreaks[N], offset by
+ OFFSET (which has already been calculated above). */
+
+#define W_OFFSET(line, offset) ((line) == 0 ? offset : 0)
+#define VIS_LLEN(l) ((l) > _rl_vis_botlin ? 0 : (vis_lbreaks[l+1] - vis_lbreaks[l]))
+#define INV_LLEN(l) (inv_lbreaks[l+1] - inv_lbreaks[l])
+#define VIS_CHARS(line) (visible_line + vis_lbreaks[line])
+#define VIS_LINE(line) ((line) > _rl_vis_botlin) ? "" : VIS_CHARS(line)
+#define INV_LINE(line) (invisible_line + inv_lbreaks[line])
+
+ /* For each line in the buffer, do the updating display. */
+ for (linenum = 0; linenum <= inv_botlin; linenum++)
+ {
+ update_line (VIS_LINE(linenum), INV_LINE(linenum), linenum,
+ VIS_LLEN(linenum), INV_LLEN(linenum), inv_botlin);
+
+ /* If this is the line with the prompt, we might need to
+ compensate for invisible characters in the new line. Do
+ this only if there is not more than one new line (which
+ implies that we completely overwrite the old visible line)
+ and the new line is shorter than the old. Make sure we are
+ at the end of the new line before clearing. */
+ if (linenum == 0 &&
+ inv_botlin == 0 && _rl_last_c_pos == out &&
+ (wrap_offset > visible_wrap_offset) &&
+ (_rl_last_c_pos < visible_first_line_len))
+ {
+ nleft = screenwidth + wrap_offset - _rl_last_c_pos;
+ if (nleft)
+ clear_to_eol (nleft);
+ }
+
+ /* Since the new first line is now visible, save its length. */
+ if (linenum == 0)
+ visible_first_line_len = (inv_botlin > 0) ? inv_lbreaks[1] : out - wrap_offset;
+ }
+
+ /* We may have deleted some lines. If so, clear the left over
+ blank ones at the bottom out. */
+ if (_rl_vis_botlin > inv_botlin)
+ {
+ char *tt;
+ for (; linenum <= _rl_vis_botlin; linenum++)
+ {
+ tt = VIS_CHARS (linenum);
+ _rl_move_vert (linenum);
+ _rl_move_cursor_relative (0, tt);
+ clear_to_eol
+ ((linenum == _rl_vis_botlin) ? strlen (tt) : screenwidth);
+ }
+ }
+ _rl_vis_botlin = inv_botlin;
+
+ /* CHANGED_SCREEN_LINE is set to 1 if we have moved to a
+ different screen line during this redisplay. */
+ changed_screen_line = _rl_last_v_pos != cursor_linenum;
+ if (changed_screen_line)
+ {
+ _rl_move_vert (cursor_linenum);
+ /* If we moved up to the line with the prompt using term_up,
+ the physical cursor position on the screen stays the same,
+ but the buffer position needs to be adjusted to account
+ for invisible characters. */
+ if (cursor_linenum == 0 && wrap_offset)
+ _rl_last_c_pos += wrap_offset;
+ }
+
+ /* We have to reprint the prompt if it contains invisible
+ characters, since it's not generally OK to just reprint
+ the characters from the current cursor position. But we
+ only need to reprint it if the cursor is before the last
+ invisible character in the prompt string. */
+ nleft = visible_length + wrap_offset;
+ if (cursor_linenum == 0 && wrap_offset > 0 && _rl_last_c_pos > 0 &&
+ _rl_last_c_pos <= last_invisible && local_prompt)
+ {
+ if (term_cr)
+ tputs (term_cr, 1, _rl_output_character_function);
+ _rl_output_some_chars (local_prompt, nleft);
+ _rl_last_c_pos = nleft;
+ }
+
+ /* Where on that line? And where does that line start
+ in the buffer? */
+ pos = inv_lbreaks[cursor_linenum];
+ /* nleft == number of characters in the line buffer between the
+ start of the line and the cursor position. */
+ nleft = c_pos - pos;
+
+ /* Since _rl_backspace() doesn't know about invisible characters in the
+ prompt, and there's no good way to tell it, we compensate for
+ those characters here and call _rl_backspace() directly. */
+ if (wrap_offset && cursor_linenum == 0 && nleft < _rl_last_c_pos)
+ {
+ _rl_backspace (_rl_last_c_pos - nleft);
+ _rl_last_c_pos = nleft;
+ }
+
+ if (nleft != _rl_last_c_pos)
+ _rl_move_cursor_relative (nleft, &invisible_line[pos]);
+ }
+ }
+ else /* Do horizontal scrolling. */
+ {
+#define M_OFFSET(margin, offset) ((margin) == 0 ? offset : 0)
+ int lmargin, ndisp, nleft, phys_c_pos, t;
+
+ /* Always at top line. */
+ _rl_last_v_pos = 0;
+
+ /* Compute where in the buffer the displayed line should start. This
+ will be LMARGIN. */
+
+ /* The number of characters that will be displayed before the cursor. */
+ ndisp = c_pos - wrap_offset;
+ nleft = visible_length + wrap_offset;
+ /* Where the new cursor position will be on the screen. This can be
+ longer than SCREENWIDTH; if it is, lmargin will be adjusted. */
+ phys_c_pos = c_pos - (last_lmargin ? last_lmargin : wrap_offset);
+ t = screenwidth / 3;
+
+ /* If the number of characters had already exceeded the screenwidth,
+ last_lmargin will be > 0. */
+
+ /* If the number of characters to be displayed is more than the screen
+ width, compute the starting offset so that the cursor is about
+ two-thirds of the way across the screen. */
+ if (phys_c_pos > screenwidth - 2)
+ {
+ lmargin = c_pos - (2 * t);
+ if (lmargin < 0)
+ lmargin = 0;
+ /* If the left margin would be in the middle of a prompt with
+ invisible characters, don't display the prompt at all. */
+ if (wrap_offset && lmargin > 0 && lmargin < nleft)
+ lmargin = nleft;
+ }
+ else if (ndisp < screenwidth - 2) /* XXX - was -1 */
+ lmargin = 0;
+ else if (phys_c_pos < 1)
+ {
+ /* If we are moving back towards the beginning of the line and
+ the last margin is no longer correct, compute a new one. */
+ lmargin = ((c_pos - 1) / t) * t; /* XXX */
+ if (wrap_offset && lmargin > 0 && lmargin < nleft)
+ lmargin = nleft;
+ }
+ else
+ lmargin = last_lmargin;
+
+ /* If the first character on the screen isn't the first character
+ in the display line, indicate this with a special character. */
+ if (lmargin > 0)
+ line[lmargin] = '<';
+
+ /* If SCREENWIDTH characters starting at LMARGIN do not encompass
+ the whole line, indicate that with a special characters at the
+ right edge of the screen. If LMARGIN is 0, we need to take the
+ wrap offset into account. */
+ t = lmargin + M_OFFSET (lmargin, wrap_offset) + screenwidth;
+ if (t < out)
+ line[t - 1] = '>';
+
+ if (!rl_display_fixed || forced_display || lmargin != last_lmargin)
+ {
+ forced_display = 0;
+ update_line (&visible_line[last_lmargin],
+ &invisible_line[lmargin],
+ 0,
+ screenwidth + visible_wrap_offset,
+ screenwidth + (lmargin ? 0 : wrap_offset),
+ 0);
+
+ /* If the visible new line is shorter than the old, but the number
+ of invisible characters is greater, and we are at the end of
+ the new line, we need to clear to eol. */
+ t = _rl_last_c_pos - M_OFFSET (lmargin, wrap_offset);
+ if ((M_OFFSET (lmargin, wrap_offset) > visible_wrap_offset) &&
+ (_rl_last_c_pos == out) &&
+ t < visible_first_line_len)
+ {
+ nleft = screenwidth - t;
+ clear_to_eol (nleft);
+ }
+ visible_first_line_len = out - lmargin - M_OFFSET (lmargin, wrap_offset);
+ if (visible_first_line_len > screenwidth)
+ visible_first_line_len = screenwidth;
+
+ _rl_move_cursor_relative (c_pos - lmargin, &invisible_line[lmargin]);
+ last_lmargin = lmargin;
+ }
+ }
+ fflush (rl_outstream);
+
+ /* Swap visible and non-visible lines. */
+ {
+ char *temp = visible_line;
+ int *itemp = vis_lbreaks;
+ visible_line = invisible_line;
+ invisible_line = temp;
+ vis_lbreaks = inv_lbreaks;
+ inv_lbreaks = itemp;
+ rl_display_fixed = 0;
+ /* If we are displaying on a single line, and last_lmargin is > 0, we
+ are not displaying any invisible characters, so set visible_wrap_offset
+ to 0. */
+ if (_rl_horizontal_scroll_mode && last_lmargin)
+ visible_wrap_offset = 0;
+ else
+ visible_wrap_offset = wrap_offset;
+ }
+}
+
+/* PWP: update_line() is based on finding the middle difference of each
+ line on the screen; vis:
+
+ /old first difference
+ /beginning of line | /old last same /old EOL
+ v v v v
+old: eddie> Oh, my little gruntle-buggy is to me, as lurgid as
+new: eddie> Oh, my little buggy says to me, as lurgid as
+ ^ ^ ^ ^
+ \beginning of line | \new last same \new end of line
+ \new first difference
+
+ All are character pointers for the sake of speed. Special cases for
+ no differences, as well as for end of line additions must be handeled.
+
+ Could be made even smarter, but this works well enough */
+static void
+update_line (old, new, current_line, omax, nmax, inv_botlin)
+ register char *old, *new;
+ int current_line, omax, nmax, inv_botlin;
+{
+ register char *ofd, *ols, *oe, *nfd, *nls, *ne;
+ int temp, lendiff, wsatend, od, nd;
+ int current_invis_chars;
+
+ /* If we're at the right edge of a terminal that supports xn, we're
+ ready to wrap around, so do so. This fixes problems with knowing
+ the exact cursor position and cut-and-paste with certain terminal
+ emulators. In this calculation, TEMP is the physical screen
+ position of the cursor. */
+ temp = _rl_last_c_pos - W_OFFSET(_rl_last_v_pos, visible_wrap_offset);
+ if (temp == screenwidth && _rl_term_autowrap && !_rl_horizontal_scroll_mode
+ && _rl_last_v_pos == current_line - 1)
+ {
+ if (new[0])
+ putc (new[0], rl_outstream);
+ else
+ putc (' ', rl_outstream);
+ _rl_last_c_pos = 1; /* XXX */
+ _rl_last_v_pos++;
+ if (old[0] && new[0])
+ old[0] = new[0];
+ }
+
+ /* Find first difference. */
+ for (ofd = old, nfd = new;
+ (ofd - old < omax) && *ofd && (*ofd == *nfd);
+ ofd++, nfd++)
+ ;
+
+ /* Move to the end of the screen line. ND and OD are used to keep track
+ of the distance between ne and new and oe and old, respectively, to
+ move a subtraction out of each loop. */
+ for (od = ofd - old, oe = ofd; od < omax && *oe; oe++, od++);
+ for (nd = nfd - new, ne = nfd; nd < nmax && *ne; ne++, nd++);
+
+ /* If no difference, continue to next line. */
+ if (ofd == oe && nfd == ne)
+ return;
+
+ wsatend = 1; /* flag for trailing whitespace */
+ ols = oe - 1; /* find last same */
+ nls = ne - 1;
+ while ((ols > ofd) && (nls > nfd) && (*ols == *nls))
+ {
+ if (*ols != ' ')
+ wsatend = 0;
+ ols--;
+ nls--;
+ }
+
+ if (wsatend)
+ {
+ ols = oe;
+ nls = ne;
+ }
+ else if (*ols != *nls)
+ {
+ if (*ols) /* don't step past the NUL */
+ ols++;
+ if (*nls)
+ nls++;
+ }
+
+ /* count of invisible characters in the current invisible line. */
+ current_invis_chars = W_OFFSET (current_line, wrap_offset);
+ if (_rl_last_v_pos != current_line)
+ {
+ _rl_move_vert (current_line);
+ if (current_line == 0 && visible_wrap_offset)
+ _rl_last_c_pos += visible_wrap_offset;
+ }
+
+ /* If this is the first line and there are invisible characters in the
+ prompt string, and the prompt string has not changed, and the current
+ cursor position is before the last invisible character in the prompt,
+ and the index of the character to move to is past the end of the prompt
+ string, then redraw the entire prompt string. We can only do this
+ reliably if the terminal supports a `cr' capability.
+
+ This is not an efficiency hack -- there is a problem with redrawing
+ portions of the prompt string if they contain terminal escape
+ sequences (like drawing the `unbold' sequence without a corresponding
+ `bold') that manifests itself on certain terminals. */
+
+ lendiff = local_prompt ? strlen (local_prompt) : 0;
+ od = ofd - old; /* index of first difference in visible line */
+ if (current_line == 0 && !_rl_horizontal_scroll_mode &&
+ term_cr && lendiff > visible_length && _rl_last_c_pos > 0 &&
+ od > lendiff && _rl_last_c_pos < last_invisible)
+ {
+ tputs (term_cr, 1, _rl_output_character_function);
+ _rl_output_some_chars (local_prompt, lendiff);
+ _rl_last_c_pos = lendiff;
+ }
+
+ _rl_move_cursor_relative (od, old);
+
+ /* if (len (new) > len (old)) */
+ lendiff = (nls - nfd) - (ols - ofd);
+
+ /* If we are changing the number of invisible characters in a line, and
+ the spot of first difference is before the end of the invisible chars,
+ lendiff needs to be adjusted. */
+ if (current_line == 0 && !_rl_horizontal_scroll_mode &&
+ current_invis_chars != visible_wrap_offset)
+ {
+ temp = visible_wrap_offset - current_invis_chars;
+ lendiff += temp;
+ }
+
+ /* Insert (diff (len (old), len (new)) ch. */
+ temp = ne - nfd;
+ if (lendiff > 0)
+ {
+ /* Non-zero if we're increasing the number of lines. */
+ int gl = current_line >= _rl_vis_botlin && inv_botlin > _rl_vis_botlin;
+ /* Sometimes it is cheaper to print the characters rather than
+ use the terminal's capabilities. If we're growing the number
+ of lines, make sure we actually cause the new line to wrap
+ around on auto-wrapping terminals. */
+ if (terminal_can_insert && ((2 * temp) >= lendiff || term_IC) && (!_rl_term_autowrap || !gl))
+ {
+ /* If lendiff > visible_length and _rl_last_c_pos == 0 and
+ _rl_horizontal_scroll_mode == 1, inserting the characters with
+ term_IC or term_ic will screw up the screen because of the
+ invisible characters. We need to just draw them. */
+ if (*ols && (!_rl_horizontal_scroll_mode || _rl_last_c_pos > 0 ||
+ lendiff <= visible_length || !current_invis_chars))
+ {
+ insert_some_chars (nfd, lendiff);
+ _rl_last_c_pos += lendiff;
+ }
+ else if (*ols == 0)
+ {
+ /* At the end of a line the characters do not have to
+ be "inserted". They can just be placed on the screen. */
+ /* However, this screws up the rest of this block, which
+ assumes you've done the insert because you can. */
+ _rl_output_some_chars (nfd, lendiff);
+ _rl_last_c_pos += lendiff;
+ }
+ else
+ {
+ /* We have horizontal scrolling and we are not inserting at
+ the end. We have invisible characters in this line. This
+ is a dumb update. */
+ _rl_output_some_chars (nfd, temp);
+ _rl_last_c_pos += temp;
+ return;
+ }
+ /* Copy (new) chars to screen from first diff to last match. */
+ temp = nls - nfd;
+ if ((temp - lendiff) > 0)
+ {
+ _rl_output_some_chars (nfd + lendiff, temp - lendiff);
+ _rl_last_c_pos += temp - lendiff;
+ }
+ }
+ else
+ {
+ /* cannot insert chars, write to EOL */
+ _rl_output_some_chars (nfd, temp);
+ _rl_last_c_pos += temp;
+ }
+ }
+ else /* Delete characters from line. */
+ {
+ /* If possible and inexpensive to use terminal deletion, then do so. */
+ if (term_dc && (2 * temp) >= -lendiff)
+ {
+ /* If all we're doing is erasing the invisible characters in the
+ prompt string, don't bother. It screws up the assumptions
+ about what's on the screen. */
+ if (_rl_horizontal_scroll_mode && _rl_last_c_pos == 0 &&
+ -lendiff == visible_wrap_offset)
+ lendiff = 0;
+
+ if (lendiff)
+ delete_chars (-lendiff); /* delete (diff) characters */
+
+ /* Copy (new) chars to screen from first diff to last match */
+ temp = nls - nfd;
+ if (temp > 0)
+ {
+ _rl_output_some_chars (nfd, temp);
+ _rl_last_c_pos += temp;
+ }
+ }
+ /* Otherwise, print over the existing material. */
+ else
+ {
+ if (temp > 0)
+ {
+ _rl_output_some_chars (nfd, temp);
+ _rl_last_c_pos += temp;
+ }
+ lendiff = (oe - old) - (ne - new);
+ if (_rl_term_autowrap && current_line < inv_botlin)
+ space_to_eol (lendiff);
+ else
+ clear_to_eol (lendiff);
+ }
+ }
+}
+
+/* Tell the update routines that we have moved onto a new (empty) line. */
+int
+rl_on_new_line ()
+{
+ if (visible_line)
+ visible_line[0] = '\0';
+
+ _rl_last_c_pos = _rl_last_v_pos = 0;
+ _rl_vis_botlin = last_lmargin = 0;
+ if (vis_lbreaks)
+ vis_lbreaks[0] = vis_lbreaks[1] = 0;
+ visible_wrap_offset = 0;
+ return 0;
+}
+
+/* Actually update the display, period. */
+int
+rl_forced_update_display ()
+{
+ if (visible_line)
+ {
+ register char *temp = visible_line;
+
+ while (*temp)
+ *temp++ = '\0';
+ }
+ rl_on_new_line ();
+ forced_display++;
+ (*rl_redisplay_function) ();
+ return 0;
+}
+
+/* Move the cursor from _rl_last_c_pos to NEW, which are buffer indices.
+ DATA is the contents of the screen line of interest; i.e., where
+ the movement is being done. */
+void
+_rl_move_cursor_relative (new, data)
+ int new;
+ char *data;
+{
+ register int i;
+
+ /* If we don't have to do anything, then return. */
+ if (_rl_last_c_pos == new) return;
+
+ /* It may be faster to output a CR, and then move forwards instead
+ of moving backwards. */
+ /* i == current physical cursor position. */
+ i = _rl_last_c_pos - W_OFFSET(_rl_last_v_pos, visible_wrap_offset);
+ if (new == 0 || CR_FASTER (new, _rl_last_c_pos) ||
+ (_rl_term_autowrap && i == screenwidth))
+ {
+#if defined (__MSDOS__)
+ putc ('\r', rl_outstream);
+#else
+ tputs (term_cr, 1, _rl_output_character_function);
+#endif /* !__MSDOS__ */
+ _rl_last_c_pos = 0;
+ }
+
+ if (_rl_last_c_pos < new)
+ {
+ /* Move the cursor forward. We do it by printing the command
+ to move the cursor forward if there is one, else print that
+ portion of the output buffer again. Which is cheaper? */
+
+ /* The above comment is left here for posterity. It is faster
+ to print one character (non-control) than to print a control
+ sequence telling the terminal to move forward one character.
+ That kind of control is for people who don't know what the
+ data is underneath the cursor. */
+#if defined (HACK_TERMCAP_MOTION)
+ extern char *term_forward_char;
+
+ if (term_forward_char)
+ for (i = _rl_last_c_pos; i < new; i++)
+ tputs (term_forward_char, 1, _rl_output_character_function);
+ else
+ for (i = _rl_last_c_pos; i < new; i++)
+ putc (data[i], rl_outstream);
+#else
+ for (i = _rl_last_c_pos; i < new; i++)
+ putc (data[i], rl_outstream);
+#endif /* HACK_TERMCAP_MOTION */
+ }
+ else if (_rl_last_c_pos != new)
+ _rl_backspace (_rl_last_c_pos - new);
+ _rl_last_c_pos = new;
+}
+
+/* PWP: move the cursor up or down. */
+void
+_rl_move_vert (to)
+ int to;
+{
+ register int delta, i;
+
+ if (_rl_last_v_pos == to || to > screenheight)
+ return;
+
+#if defined (__GO32__)
+ {
+ int row, col;
+
+ ScreenGetCursor (&row, &col);
+ ScreenSetCursor ((row + to - _rl_last_v_pos), col);
+ }
+#else /* !__GO32__ */
+
+ if ((delta = to - _rl_last_v_pos) > 0)
+ {
+ for (i = 0; i < delta; i++)
+ putc ('\n', rl_outstream);
+ tputs (term_cr, 1, _rl_output_character_function);
+ _rl_last_c_pos = 0;
+ }
+ else
+ { /* delta < 0 */
+ if (term_up && *term_up)
+ for (i = 0; i < -delta; i++)
+ tputs (term_up, 1, _rl_output_character_function);
+ }
+#endif /* !__GO32__ */
+ _rl_last_v_pos = to; /* Now TO is here */
+}
+
+/* Physically print C on rl_outstream. This is for functions which know
+ how to optimize the display. Return the number of characters output. */
+int
+rl_show_char (c)
+ int c;
+{
+ int n = 1;
+ if (META_CHAR (c) && (_rl_output_meta_chars == 0))
+ {
+ fprintf (rl_outstream, "M-");
+ n += 2;
+ c = UNMETA (c);
+ }
+
+#if defined (DISPLAY_TABS)
+ if ((CTRL_CHAR (c) && c != '\t') || c == RUBOUT)
+#else
+ if (CTRL_CHAR (c) || c == RUBOUT)
+#endif /* !DISPLAY_TABS */
+ {
+ fprintf (rl_outstream, "C-");
+ n += 2;
+ c = CTRL_CHAR (c) ? UNCTRL (c) : '?';
+ }
+
+ putc (c, rl_outstream);
+ fflush (rl_outstream);
+ return n;
+}
+
+int
+rl_character_len (c, pos)
+ register int c, pos;
+{
+ unsigned char uc;
+
+ uc = (unsigned char)c;
+
+ if (META_CHAR (uc))
+ return ((_rl_output_meta_chars == 0) ? 4 : 1);
+
+ if (uc == '\t')
+ {
+#if defined (DISPLAY_TABS)
+ return (((pos | 7) + 1) - pos);
+#else
+ return (2);
+#endif /* !DISPLAY_TABS */
+ }
+
+ if (CTRL_CHAR (c) || c == RUBOUT)
+ return (2);
+
+ return ((isprint (uc)) ? 1 : 2);
+}
+
+/* How to print things in the "echo-area". The prompt is treated as a
+ mini-modeline. */
+
+#if defined (USE_VARARGS)
+int
+#if defined (PREFER_STDARG)
+rl_message (const char *format, ...)
+#else
+rl_message (va_alist)
+ va_dcl
+#endif
+{
+ va_list args;
+#if defined (PREFER_VARARGS)
+ char *format;
+#endif
+
+#if defined (PREFER_STDARG)
+ va_start (args, format);
+#else
+ va_start (args);
+ format = va_arg (args, char *);
+#endif
+
+ vsprintf (msg_buf, format, args);
+ va_end (args);
+
+ rl_display_prompt = msg_buf;
+ (*rl_redisplay_function) ();
+ return 0;
+}
+#else /* !USE_VARARGS */
+int
+rl_message (format, arg1, arg2)
+ char *format;
+{
+ sprintf (msg_buf, format, arg1, arg2);
+ rl_display_prompt = msg_buf;
+ (*rl_redisplay_function) ();
+ return 0;
+}
+#endif /* !USE_VARARGS */
+
+/* How to clear things from the "echo-area". */
+int
+rl_clear_message ()
+{
+ rl_display_prompt = rl_prompt;
+ (*rl_redisplay_function) ();
+ return 0;
+}
+
+int
+rl_reset_line_state ()
+{
+ rl_on_new_line ();
+
+ rl_display_prompt = rl_prompt ? rl_prompt : "";
+ forced_display = 1;
+ return 0;
+}
+
+static char *saved_local_prompt;
+static char *saved_local_prefix;
+static int saved_last_invisible;
+static int saved_visible_length;
+
+void
+_rl_save_prompt ()
+{
+ saved_local_prompt = local_prompt;
+ saved_local_prefix = local_prompt_prefix;
+ saved_last_invisible = last_invisible;
+ saved_visible_length = visible_length;
+
+ local_prompt = local_prompt_prefix = (char *)0;
+ last_invisible = visible_length = 0;
+}
+
+void
+_rl_restore_prompt ()
+{
+ if (local_prompt)
+ free (local_prompt);
+ if (local_prompt_prefix)
+ free (local_prompt_prefix);
+
+ local_prompt = saved_local_prompt;
+ local_prompt_prefix = saved_local_prefix;
+ last_invisible = saved_last_invisible;
+ visible_length = saved_visible_length;
+}
+
+char *
+_rl_make_prompt_for_search (pchar)
+ int pchar;
+{
+ int len;
+ char *pmt;
+
+ _rl_save_prompt ();
+
+ if (saved_local_prompt == 0)
+ {
+ len = (rl_prompt && *rl_prompt) ? strlen (rl_prompt) : 0;
+ pmt = xmalloc (len + 2);
+ if (len)
+ strcpy (pmt, rl_prompt);
+ pmt[len] = pchar;
+ pmt[len+1] = '\0';
+ }
+ else
+ {
+ len = *saved_local_prompt ? strlen (saved_local_prompt) : 0;
+ pmt = xmalloc (len + 2);
+ if (len)
+ strcpy (pmt, saved_local_prompt);
+ pmt[len] = pchar;
+ pmt[len+1] = '\0';
+ local_prompt = savestring (pmt);
+ last_invisible = saved_last_invisible;
+ visible_length = saved_visible_length + 1;
+ }
+ return pmt;
+}
+
+/* Quick redisplay hack when erasing characters at the end of the line. */
+void
+_rl_erase_at_end_of_line (l)
+ int l;
+{
+ register int i;
+
+ _rl_backspace (l);
+ for (i = 0; i < l; i++)
+ putc (' ', rl_outstream);
+ _rl_backspace (l);
+ for (i = 0; i < l; i++)
+ visible_line[--_rl_last_c_pos] = '\0';
+ rl_display_fixed++;
+}
+
+/* Clear to the end of the line. COUNT is the minimum
+ number of character spaces to clear, */
+static void
+clear_to_eol (count)
+ int count;
+{
+#if !defined (__GO32__)
+ if (term_clreol)
+ {
+ tputs (term_clreol, 1, _rl_output_character_function);
+ }
+ else
+#endif /* !__GO32__ */
+ space_to_eol (count);
+}
+
+/* Clear to the end of the line using spaces. COUNT is the minimum
+ number of character spaces to clear, */
+static void
+space_to_eol (count)
+ int count;
+{
+ register int i;
+
+ for (i = 0; i < count; i++)
+ putc (' ', rl_outstream);
+
+ _rl_last_c_pos += count;
+}
+
+/* Insert COUNT characters from STRING to the output stream. */
+static void
+insert_some_chars (string, count)
+ char *string;
+ int count;
+{
+#if defined (__GO32__)
+ int row, col, width;
+ char *row_start;
+
+ ScreenGetCursor (&row, &col);
+ width = ScreenCols ();
+ row_start = ScreenPrimary + (row * width);
+
+ memcpy (row_start + col + count, row_start + col, width - col - count);
+
+ /* Place the text on the screen. */
+ _rl_output_some_chars (string, count);
+#else /* !_GO32 */
+
+ /* If IC is defined, then we do not have to "enter" insert mode. */
+ if (term_IC)
+ {
+ char *buffer;
+ buffer = tgoto (term_IC, 0, count);
+ tputs (buffer, 1, _rl_output_character_function);
+ _rl_output_some_chars (string, count);
+ }
+ else
+ {
+ register int i;
+
+ /* If we have to turn on insert-mode, then do so. */
+ if (term_im && *term_im)
+ tputs (term_im, 1, _rl_output_character_function);
+
+ /* If there is a special command for inserting characters, then
+ use that first to open up the space. */
+ if (term_ic && *term_ic)
+ {
+ for (i = count; i--; )
+ tputs (term_ic, 1, _rl_output_character_function);
+ }
+
+ /* Print the text. */
+ _rl_output_some_chars (string, count);
+
+ /* If there is a string to turn off insert mode, we had best use
+ it now. */
+ if (term_ei && *term_ei)
+ tputs (term_ei, 1, _rl_output_character_function);
+ }
+#endif /* !__GO32__ */
+}
+
+/* Delete COUNT characters from the display line. */
+static void
+delete_chars (count)
+ int count;
+{
+#if defined (__GO32__)
+ int row, col, width;
+ char *row_start;
+
+ ScreenGetCursor (&row, &col);
+ width = ScreenCols ();
+ row_start = ScreenPrimary + (row * width);
+
+ memcpy (row_start + col, row_start + col + count, width - col - count);
+ memset (row_start + width - count, 0, count * 2);
+#else /* !_GO32 */
+
+ if (count > screenwidth) /* XXX */
+ return;
+
+ if (term_DC && *term_DC)
+ {
+ char *buffer;
+ buffer = tgoto (term_DC, count, count);
+ tputs (buffer, count, _rl_output_character_function);
+ }
+ else
+ {
+ if (term_dc && *term_dc)
+ while (count--)
+ tputs (term_dc, 1, _rl_output_character_function);
+ }
+#endif /* !__GO32__ */
+}
+
+void
+_rl_update_final ()
+{
+ int full_lines;
+
+ full_lines = 0;
+ /* If the cursor is the only thing on an otherwise-blank last line,
+ compensate so we don't print an extra CRLF. */
+ if (_rl_vis_botlin && _rl_last_c_pos == 0 &&
+ visible_line[inv_lbreaks[_rl_vis_botlin]+1] == 0)
+ {
+ _rl_vis_botlin--;
+ full_lines = 1;
+ }
+ _rl_move_vert (_rl_vis_botlin);
+ /* If we've wrapped lines, remove the final xterm line-wrap flag. */
+ if (full_lines && _rl_term_autowrap && (VIS_LLEN(_rl_vis_botlin) == screenwidth))
+ {
+ char *last_line;
+ last_line = &visible_line[inv_lbreaks[_rl_vis_botlin]];
+ _rl_move_cursor_relative (screenwidth - 1, last_line);
+ clear_to_eol (0);
+ putc (last_line[screenwidth - 1], rl_outstream);
+ }
+ _rl_vis_botlin = 0;
+ crlf ();
+ fflush (rl_outstream);
+ rl_display_fixed++;
+}
+
+/* Move to the start of the current line. */
+static void
+cr ()
+{
+ if (term_cr)
+ {
+ tputs (term_cr, 1, _rl_output_character_function);
+ _rl_last_c_pos = 0;
+ }
+}
+
+/* Redisplay the current line after a SIGWINCH is received. */
+void
+_rl_redisplay_after_sigwinch ()
+{
+ char *t, *oldp;
+
+ /* Clear the current line and put the cursor at column 0. Make sure
+ the right thing happens if we have wrapped to a new screen line. */
+ if (term_cr)
+ {
+ tputs (term_cr, 1, _rl_output_character_function);
+ _rl_last_c_pos = 0;
+ if (term_clreol)
+ tputs (term_clreol, 1, _rl_output_character_function);
+ else
+ {
+ space_to_eol (screenwidth);
+ tputs (term_cr, 1, _rl_output_character_function);
+ }
+ if (_rl_last_v_pos > 0)
+ _rl_move_vert (0);
+ }
+ else
+ crlf ();
+
+ /* Redraw only the last line of a multi-line prompt. */
+ t = strrchr (rl_display_prompt, '\n');
+ if (t)
+ {
+ oldp = rl_display_prompt;
+ rl_display_prompt = ++t;
+ rl_forced_update_display ();
+ rl_display_prompt = oldp;
+ }
+ else
+ rl_forced_update_display ();
+}
+
+void
+_rl_clean_up_for_exit ()
+{
+ if (readline_echoing_p)
+ {
+ _rl_move_vert (_rl_vis_botlin);
+ _rl_vis_botlin = 0;
+ fflush (rl_outstream);
+ rl_restart_output ();
+ }
+}
diff --git a/contrib/libreadline/doc/Makefile b/contrib/libreadline/doc/Makefile
new file mode 100644
index 0000000..9dbab24
--- /dev/null
+++ b/contrib/libreadline/doc/Makefile
@@ -0,0 +1,69 @@
+# This makefile for Readline library documentation is in -*- text -*- mode.
+# Emacs likes it that way.
+TEXI2DVI = texi2dvi
+
+RM = rm -f
+
+INSTALL_DATA = cp
+infodir = /usr/local/info
+
+RLSRC = rlman.texinfo rluser.texinfo rltech.texinfo
+HISTSRC = hist.texinfo hsuser.texinfo hstech.texinfo
+
+DVIOBJ = readline.dvi history.dvi
+INFOOBJ = readline.info history.info
+PSOBJ = readline.ps history.ps
+HTMLOBJ = readline.html history.html
+
+all: info dvi html
+
+readline.dvi: $(RLSRC)
+ $(TEXI2DVI) rlman.texinfo
+ mv rlman.dvi readline.dvi
+
+readline.info: $(RLSRC)
+ makeinfo --no-split -o $@ rlman.texinfo
+
+history.dvi: ${HISTSRC}
+ $(TEXI2DVI) hist.texinfo
+ mv hist.dvi history.dvi
+
+history.info: ${HISTSRC}
+ makeinfo --no-split -o $@ hist.texinfo
+
+readline.ps: readline.dvi
+ dvips -D 300 -o $@ readline.dvi
+
+history.ps: history.dvi
+ dvips -D 300 -o $@ history.dvi
+
+readline.html: ${RLSRC}
+ texi2html rlman.texinfo
+ sed -e 's:rlman.html:readline.html:' -e 's:rlman_toc.html:readline_toc.html:' rlman.html > readline.html
+ sed -e 's:rlman.html:readline.html:' -e 's:rlman_toc.html:readline_toc.html:' rlman_toc.html > readline_toc.html
+ rm -f rlman.html rlman_toc.html
+
+history.html: ${HISTSRC}
+ texi2html hist.texinfo
+ sed -e 's:hist.html:history.html:' -e 's:hist_toc.html:history_toc.html:' hist.html > history.html
+ sed -e 's:hist.html:history.html:' -e 's:hist_toc.html:history_toc.html:' hist_toc.html > history_toc.html
+ rm -f hist.html hist_toc.html
+
+info: $(INFOOBJ)
+dvi: $(DVIOBJ)
+ps: $(PSOBJ)
+html: $(HTMLOBJ)
+
+clean:
+ $(RM) *.aux *.cp *.fn *.ky *.log *.pg *.toc *.tp *.vr *.cps *.pgs \
+ *.fns *.kys *.tps *.vrs *.o core
+
+distclean: clean
+mostlyclean: clean
+
+maintainer-clean: clean
+ $(RM) *.dvi *.info *.info-* *.ps *.html
+
+install: info
+ ${INSTALL_DATA} readline.info $(infodir)/readline.info
+ ${INSTALL_DATA} history.info $(infodir)/history.info
diff --git a/contrib/libreadline/doc/hist.texinfo b/contrib/libreadline/doc/hist.texinfo
new file mode 100644
index 0000000..aa04553
--- /dev/null
+++ b/contrib/libreadline/doc/hist.texinfo
@@ -0,0 +1,112 @@
+\input texinfo @c -*-texinfo-*-
+@c %**start of header (This is for running Texinfo on a region.)
+@setfilename history.info
+@settitle GNU History Library
+@c %**end of header (This is for running Texinfo on a region.)
+
+@setchapternewpage odd
+
+@ignore
+last change: Thu Mar 21 16:07:29 EST 1996
+@end ignore
+
+@set EDITION 2.1
+@set VERSION 2.1
+@set UPDATED 21 March 1996
+@set UPDATE-MONTH March 1996
+
+@ifinfo
+This document describes the GNU History library, a programming tool that
+provides a consistent user interface for recalling lines of previously
+typed input.
+
+Copyright (C) 1988, 1991, 1993, 1995, 1996 Free Software Foundation, Inc.
+
+Permission is granted to make and distribute verbatim copies of
+this manual provided the copyright notice and this permission notice
+pare preserved on all copies.
+
+@ignore
+Permission is granted to process this file through TeX and print the
+results, provided the printed document carries copying permission
+notice identical to this one except for the removal of this paragraph
+(this paragraph not being relevant to the printed manual).
+@end ignore
+
+Permission is granted to copy and distribute modified versions of this
+manual under the conditions for verbatim copying, provided that the entire
+resulting derived work is distributed under the terms of a permission
+notice identical to this one.
+
+Permission is granted to copy and distribute translations of this manual
+into another language, under the above conditions for modified versions,
+except that this permission notice may be stated in a translation approved
+by the Foundation.
+@end ifinfo
+
+@titlepage
+@title GNU History Library
+@subtitle Edition @value{EDITION}, for @code{History Library} Version @value{VERSION}.
+@subtitle @value{UPDATE-MONTH}
+@author Brian Fox, Free Software Foundation
+@author Chet Ramey, Case Western Reserve University
+
+@page
+This document describes the GNU History library, a programming tool that
+provides a consistent user interface for recalling lines of previously
+typed input.
+
+Published by the Free Software Foundation @*
+675 Massachusetts Avenue, @*
+Cambridge, MA 02139 USA
+
+Permission is granted to make and distribute verbatim copies of
+this manual provided the copyright notice and this permission notice
+are preserved on all copies.
+
+Permission is granted to copy and distribute modified versions of this
+manual under the conditions for verbatim copying, provided that the entire
+resulting derived work is distributed under the terms of a permission
+notice identical to this one.
+
+Permission is granted to copy and distribute translations of this manual
+into another language, under the above conditions for modified versions,
+except that this permission notice may be stated in a translation approved
+by the Foundation.
+
+@vskip 0pt plus 1filll
+Copyright @copyright{} 1989, 1991 Free Software Foundation, Inc.
+@end titlepage
+
+@ifinfo
+@node Top
+@top GNU History Library
+
+This document describes the GNU History library, a programming tool that
+provides a consistent user interface for recalling lines of previously
+typed input.
+
+@menu
+* Using History Interactively:: GNU History User's Manual.
+* Programming with GNU History:: GNU History Programmer's Manual.
+* Concept Index:: Index of concepts described in this manual.
+* Function and Variable Index:: Index of externally visible functions
+ and variables.
+@end menu
+@end ifinfo
+
+@syncodeindex fn vr
+
+@include hsuser.texinfo
+@include hstech.texinfo
+
+@node Concept Index
+@appendix Concept Index
+@printindex cp
+
+@node Function and Variable Index
+@appendix Function and Variable Index
+@printindex vr
+
+@contents
+@bye
diff --git a/contrib/libreadline/doc/hstech.texinfo b/contrib/libreadline/doc/hstech.texinfo
new file mode 100644
index 0000000..be41318
--- /dev/null
+++ b/contrib/libreadline/doc/hstech.texinfo
@@ -0,0 +1,504 @@
+@ignore
+This file documents the user interface to the GNU History library.
+
+Copyright (C) 1988, 1991, 1994, 1996 Free Software Foundation, Inc.
+Authored by Brian Fox and Chet Ramey.
+
+Permission is granted to make and distribute verbatim copies of this manual
+provided the copyright notice and this permission notice are preserved on
+all copies.
+
+Permission is granted to process this file through Tex and print the
+results, provided the printed document carries copying permission notice
+identical to this one except for the removal of this paragraph (this
+paragraph not being relevant to the printed manual).
+
+Permission is granted to copy and distribute modified versions of this
+manual under the conditions for verbatim copying, provided also that the
+GNU Copyright statement is available to the distributee, and provided that
+the entire resulting derived work is distributed under the terms of a
+permission notice identical to this one.
+
+Permission is granted to copy and distribute translations of this manual
+into another language, under the above conditions for modified versions.
+@end ignore
+
+@node Programming with GNU History
+@chapter Programming with GNU History
+
+This chapter describes how to interface programs that you write
+with the GNU History Library.
+It should be considered a technical guide.
+For information on the interactive use of GNU History, @pxref{Using
+History Interactively}.
+
+@menu
+* Introduction to History:: What is the GNU History library for?
+* History Storage:: How information is stored.
+* History Functions:: Functions that you can use.
+* History Variables:: Variables that control behaviour.
+* History Programming Example:: Example of using the GNU History Library.
+@end menu
+
+@node Introduction to History
+@section Introduction to History
+
+Many programs read input from the user a line at a time. The GNU History
+library is able to keep track of those lines, associate arbitrary data with
+each line, and utilize information from previous lines in composing new
+ones.
+
+The programmer using the History library has available functions
+for remembering lines on a history list, associating arbitrary data
+with a line, removing lines from the list, searching through the list
+for a line containing an arbitrary text string, and referencing any line
+in the list directly. In addition, a history @dfn{expansion} function
+is available which provides for a consistent user interface across
+different programs.
+
+The user using programs written with the History library has the
+benefit of a consistent user interface with a set of well-known
+commands for manipulating the text of previous lines and using that text
+in new commands. The basic history manipulation commands are similar to
+the history substitution provided by @code{csh}.
+
+If the programmer desires, he can use the Readline library, which
+includes some history manipulation by default, and has the added
+advantage of command line editing.
+
+@node History Storage
+@section History Storage
+
+The history list is an array of history entries. A history entry is
+declared as follows:
+
+@example
+typedef struct _hist_entry @{
+ char *line;
+ char *data;
+@} HIST_ENTRY;
+@end example
+
+The history list itself might therefore be declared as
+
+@example
+HIST_ENTRY **the_history_list;
+@end example
+
+The state of the History library is encapsulated into a single structure:
+
+@example
+/* A structure used to pass the current state of the history stuff around. */
+typedef struct _hist_state @{
+ HIST_ENTRY **entries; /* Pointer to the entries themselves. */
+ int offset; /* The location pointer within this array. */
+ int length; /* Number of elements within this array. */
+ int size; /* Number of slots allocated to this array. */
+ int flags;
+@} HISTORY_STATE;
+@end example
+
+If the flags member includes @code{HS_STIFLED}, the history has been
+stifled.
+
+@node History Functions
+@section History Functions
+
+This section describes the calling sequence for the various functions
+present in GNU History.
+
+@menu
+* Initializing History and State Management:: Functions to call when you
+ want to use history in a
+ program.
+* History List Management:: Functions used to manage the list
+ of history entries.
+* Information About the History List:: Functions returning information about
+ the history list.
+* Moving Around the History List:: Functions used to change the position
+ in the history list.
+* Searching the History List:: Functions to search the history list
+ for entries containing a string.
+* Managing the History File:: Functions that read and write a file
+ containing the history list.
+* History Expansion:: Functions to perform csh-like history
+ expansion.
+@end menu
+
+@node Initializing History and State Management
+@subsection Initializing History and State Management
+
+This section describes functions used to initialize and manage
+the state of the History library when you want to use the history
+functions in your program.
+
+@deftypefun void using_history ()
+Begin a session in which the history functions might be used. This
+initializes the interactive variables.
+@end deftypefun
+
+@deftypefun {HISTORY_STATE *} history_get_history_state ()
+Return a structure describing the current state of the input history.
+@end deftypefun
+
+@deftypefun void history_set_history_state (HISTORY_STATE *state)
+Set the state of the history list according to @var{state}.
+@end deftypefun
+
+@node History List Management
+@subsection History List Management
+
+These functions manage individual entries on the history list, or set
+parameters managing the list itself.
+
+@deftypefun void add_history (char *string)
+Place @var{string} at the end of the history list. The associated data
+field (if any) is set to @code{NULL}.
+@end deftypefun
+
+@deftypefun {HIST_ENTRY *} remove_history (int which)
+Remove history entry at offset @var{which} from the history. The
+removed element is returned so you can free the line, data,
+and containing structure.
+@end deftypefun
+
+@deftypefun {HIST_ENTRY *} replace_history_entry (int which, char *line, char *data)
+Make the history entry at offset @var{which} have @var{line} and @var{data}.
+This returns the old entry so you can dispose of the data. In the case
+of an invalid @var{which}, a @code{NULL} pointer is returned.
+@end deftypefun
+
+@deftypefun void clear_history ()
+Clear the history list by deleting all the entries.
+@end deftypefun
+
+@deftypefun void stifle_history (int max)
+Stifle the history list, remembering only the last @var{max} entries.
+@end deftypefun
+
+@deftypefun int unstifle_history ()
+Stop stifling the history. This returns the previous amount the
+history was stifled. The value is positive if the history was
+stifled, negative if it wasn't.
+@end deftypefun
+
+@deftypefun int history_is_stifled ()
+Returns non-zero if the history is stifled, zero if it is not.
+@end deftypefun
+
+@node Information About the History List
+@subsection Information About the History List
+
+These functions return information about the entire history list or
+individual list entries.
+
+@deftypefun {HIST_ENTRY **} history_list ()
+Return a @code{NULL} terminated array of @code{HIST_ENTRY} which is the
+current input history. Element 0 of this list is the beginning of time.
+If there is no history, return @code{NULL}.
+@end deftypefun
+
+@deftypefun int where_history ()
+Returns the offset of the current history element.
+@end deftypefun
+
+@deftypefun {HIST_ENTRY *} current_history ()
+Return the history entry at the current position, as determined by
+@code{where_history ()}. If there is no entry there, return a @code{NULL}
+pointer.
+@end deftypefun
+
+@deftypefun {HIST_ENTRY *} history_get (int offset)
+Return the history entry at position @var{offset}, starting from
+@code{history_base}. If there is no entry there, or if @var{offset}
+is greater than the history length, return a @code{NULL} pointer.
+@end deftypefun
+
+@deftypefun int history_total_bytes ()
+Return the number of bytes that the primary history entries are using.
+This function returns the sum of the lengths of all the lines in the
+history.
+@end deftypefun
+
+@node Moving Around the History List
+@subsection Moving Around the History List
+
+These functions allow the current index into the history list to be
+set or changed.
+
+@deftypefun int history_set_pos (int pos)
+Set the position in the history list to @var{pos}, an absolute index
+into the list.
+@end deftypefun
+
+@deftypefun {HIST_ENTRY *} previous_history ()
+Back up the current history offset to the previous history entry, and
+return a pointer to that entry. If there is no previous entry, return
+a @code{NULL} pointer.
+@end deftypefun
+
+@deftypefun {HIST_ENTRY *} next_history ()
+Move the current history offset forward to the next history entry, and
+return the a pointer to that entry. If there is no next entry, return
+a @code{NULL} pointer.
+@end deftypefun
+
+@node Searching the History List
+@subsection Searching the History List
+@cindex History Searching
+
+These functions allow searching of the history list for entries containing
+a specific string. Searching may be performed both forward and backward
+from the current history position. The search may be @dfn{anchored},
+meaning that the string must match at the beginning of the history entry.
+@cindex anchored search
+
+@deftypefun int history_search (char *string, int direction)
+Search the history for @var{string}, starting at the current history
+offset. If @var{direction} < 0, then the search is through previous entries,
+else through subsequent. If @var{string} is found, then
+the current history index is set to that history entry, and the value
+returned is the offset in the line of the entry where
+@var{string} was found. Otherwise, nothing is changed, and a -1 is
+returned.
+@end deftypefun
+
+@deftypefun int history_search_prefix (char *string, int direction)
+Search the history for @var{string}, starting at the current history
+offset. The search is anchored: matching lines must begin with
+@var{string}. If @var{direction} < 0, then the search is through previous
+entries, else through subsequent. If @var{string} is found, then the
+current history index is set to that entry, and the return value is 0.
+Otherwise, nothing is changed, and a -1 is returned.
+@end deftypefun
+
+@deftypefun int history_search_pos (char *string, int direction, int pos)
+Search for @var{string} in the history list, starting at @var{pos}, an
+absolute index into the list. If @var{direction} is negative, the search
+proceeds backward from @var{pos}, otherwise forward. Returns the absolute
+index of the history element where @var{string} was found, or -1 otherwise.
+@end deftypefun
+
+@node Managing the History File
+@subsection Managing the History File
+
+The History library can read the history from and write it to a file.
+This section documents the functions for managing a history file.
+
+@deftypefun int read_history (char *filename)
+Add the contents of @var{filename} to the history list, a line at a
+time. If @var{filename} is @code{NULL}, then read from
+@file{~/.history}. Returns 0 if successful, or errno if not.
+@end deftypefun
+
+@deftypefun int read_history_range (char *filename, int from, int to)
+Read a range of lines from @var{filename}, adding them to the history list.
+Start reading at line @var{from} and end at @var{to}. If
+@var{from} is zero, start at the beginning. If @var{to} is less than
+@var{from}, then read until the end of the file. If @var{filename} is
+@code{NULL}, then read from @file{~/.history}. Returns 0 if successful,
+or @code{errno} if not.
+@end deftypefun
+
+@deftypefun int write_history (char *filename)
+Write the current history to @var{filename}, overwriting @var{filename}
+if necessary. If @var{filename} is
+@code{NULL}, then write the history list to @file{~/.history}. Values
+returned are as in @code{read_history ()}.
+@end deftypefun
+
+@deftypefun int append_history (int nelements, char *filename)
+Append the last @var{nelements} of the history list to @var{filename}.
+@end deftypefun
+
+@deftypefun int history_truncate_file (char *filename, int nlines)
+Truncate the history file @var{filename}, leaving only the last
+@var{nlines} lines.
+@end deftypefun
+
+@node History Expansion
+@subsection History Expansion
+
+These functions implement @code{csh}-like history expansion.
+
+@deftypefun int history_expand (char *string, char **output)
+Expand @var{string}, placing the result into @var{output}, a pointer
+to a string (@pxref{History Interaction}). Returns:
+@table @code
+@item 0
+If no expansions took place (or, if the only change in
+the text was the de-slashifying of the history expansion
+character);
+@item 1
+if expansions did take place;
+@item -1
+if there was an error in expansion;
+@item 2
+if the returned line should only be displayed, but not executed,
+as with the @code{:p} modifier (@pxref{Modifiers}).
+@end table
+
+If an error ocurred in expansion, then @var{output} contains a descriptive
+error message.
+@end deftypefun
+
+@deftypefun {char *} history_arg_extract (int first, int last, char *string)
+Extract a string segment consisting of the @var{first} through @var{last}
+arguments present in @var{string}. Arguments are broken up as in Bash.
+@end deftypefun
+
+@deftypefun {char *} get_history_event (char *string, int *cindex, int qchar)
+Returns the text of the history event beginning at @var{string} +
+@var{*cindex}. @var{*cindex} is modified to point to after the event
+specifier. At function entry, @var{cindex} points to the index into
+@var{string} where the history event specification begins. @var{qchar}
+is a character that is allowed to end the event specification in addition
+to the ``normal'' terminating characters.
+@end deftypefun
+
+@deftypefun {char **} history_tokenize (char *string)
+Return an array of tokens parsed out of @var{string}, much as the
+shell might. The tokens are split on white space and on the
+characters @code{()<>;&|$}, and shell quoting conventions are
+obeyed.
+@end deftypefun
+
+@node History Variables
+@section History Variables
+
+This section describes the externally visible variables exported by
+the GNU History Library.
+
+@deftypevar int history_base
+The logical offset of the first entry in the history list.
+@end deftypevar
+
+@deftypevar int history_length
+The number of entries currently stored in the history list.
+@end deftypevar
+
+@deftypevar int max_input_history
+The maximum number of history entries. This must be changed using
+@code{stifle_history ()}.
+@end deftypevar
+
+@deftypevar char history_expansion_char
+The character that starts a history event. The default is @samp{!}.
+@end deftypevar
+
+@deftypevar char history_subst_char
+The character that invokes word substitution if found at the start of
+a line. The default is @samp{^}.
+@end deftypevar
+
+@deftypevar char history_comment_char
+During tokenization, if this character is seen as the first character
+of a word, then it and all subsequent characters up to a newline are
+ignored, suppressing history expansion for the remainder of the line.
+This is disabled by default.
+@end deftypevar
+
+@deftypevar {char *} history_no_expand_chars
+The list of characters which inhibit history expansion if found immediately
+following @var{history_expansion_char}. The default is whitespace and
+@samp{=}.
+@end deftypevar
+
+@deftypevar {char *} history_search_delimiter_chars
+The list of additional characters which can delimit a history search
+string, in addition to whitespace, @samp{:} and @samp{?} in the case of
+a substring search. The default is empty.
+@end deftypevar
+
+@deftypevar int history_quotes_inhibit_expansion
+If non-zero, single-quoted words are not scanned for the history expansion
+character. The default value is 0.
+@end deftypevar
+
+@node History Programming Example
+@section History Programming Example
+
+The following program demonstrates simple use of the GNU History Library.
+
+@smallexample
+main ()
+@{
+ char line[1024], *t;
+ int len, done = 0;
+
+ line[0] = 0;
+
+ using_history ();
+ while (!done)
+ @{
+ printf ("history$ ");
+ fflush (stdout);
+ t = fgets (line, sizeof (line) - 1, stdin);
+ if (t && *t)
+ @{
+ len = strlen (t);
+ if (t[len - 1] == '\n')
+ t[len - 1] = '\0';
+ @}
+
+ if (!t)
+ strcpy (line, "quit");
+
+ if (line[0])
+ @{
+ char *expansion;
+ int result;
+
+ result = history_expand (line, &expansion);
+ if (result)
+ fprintf (stderr, "%s\n", expansion);
+
+ if (result < 0 || result == 2)
+ @{
+ free (expansion);
+ continue;
+ @}
+
+ add_history (expansion);
+ strncpy (line, expansion, sizeof (line) - 1);
+ free (expansion);
+ @}
+
+ if (strcmp (line, "quit") == 0)
+ done = 1;
+ else if (strcmp (line, "save") == 0)
+ write_history ("history_file");
+ else if (strcmp (line, "read") == 0)
+ read_history ("history_file");
+ else if (strcmp (line, "list") == 0)
+ @{
+ register HIST_ENTRY **the_list;
+ register int i;
+
+ the_list = history_list ();
+ if (the_list)
+ for (i = 0; the_list[i]; i++)
+ printf ("%d: %s\n", i + history_base, the_list[i]->line);
+ @}
+ else if (strncmp (line, "delete", 6) == 0)
+ @{
+ int which;
+ if ((sscanf (line + 6, "%d", &which)) == 1)
+ @{
+ HIST_ENTRY *entry = remove_history (which);
+ if (!entry)
+ fprintf (stderr, "No such entry %d\n", which);
+ else
+ @{
+ free (entry->line);
+ free (entry);
+ @}
+ @}
+ else
+ @{
+ fprintf (stderr, "non-numeric arg given to `delete'\n");
+ @}
+ @}
+ @}
+@}
+@end smallexample
diff --git a/contrib/libreadline/doc/hsuser.texinfo b/contrib/libreadline/doc/hsuser.texinfo
new file mode 100644
index 0000000..6e95649
--- /dev/null
+++ b/contrib/libreadline/doc/hsuser.texinfo
@@ -0,0 +1,304 @@
+@ignore
+This file documents the user interface to the GNU History library.
+
+Copyright (C) 1988, 1991, 1996 Free Software Foundation, Inc.
+Authored by Brian Fox and Chet Ramey.
+
+Permission is granted to make and distribute verbatim copies of this manual
+provided the copyright notice and this permission notice are preserved on
+all copies.
+
+Permission is granted to process this file through Tex and print the
+results, provided the printed document carries copying permission notice
+identical to this one except for the removal of this paragraph (this
+paragraph not being relevant to the printed manual).
+
+Permission is granted to copy and distribute modified versions of this
+manual under the conditions for verbatim copying, provided also that the
+GNU Copyright statement is available to the distributee, and provided that
+the entire resulting derived work is distributed under the terms of a
+permission notice identical to this one.
+
+Permission is granted to copy and distribute translations of this manual
+into another language, under the above conditions for modified versions.
+@end ignore
+
+@node Using History Interactively
+@chapter Using History Interactively
+
+@ifset BashFeatures
+This chapter describes how to use the GNU History Library interactively,
+from a user's standpoint. It should be considered a user's guide. For
+information on using the GNU History Library in your own programs,
+see the GNU Readline Library Manual.
+@end ifset
+@ifclear BashFeatures
+This chapter describes how to use the GNU History Library interactively,
+from a user's standpoint. It should be considered a user's guide. For
+information on using the GNU History Library in your own programs,
+@pxref{Programming with GNU History}.
+@end ifclear
+
+@ifset BashFeatures
+@menu
+* Bash History Facilities:: How Bash lets you manipulate your command
+ history.
+* History Interaction:: What it feels like using History as a user.
+@end menu
+@end ifset
+@ifclear BashFeatures
+@menu
+* History Interaction:: What it feels like using History as a user.
+@end menu
+@end ifclear
+
+@ifset BashFeatures
+@node Bash History Facilities
+@section Bash History Facilities
+@cindex command history
+@cindex history list
+
+When the @samp{-o history} option to the @code{set} builtin
+is enabled (@pxref{The Set Builtin}),
+the shell provides access to the @var{command history},
+the list of commands previously typed. The text of the last
+@code{HISTSIZE}
+commands (default 500) is saved in a history list. The shell
+stores each command in the history list prior to parameter and
+variable expansion
+but after history expansion is performed, subject to the
+values of the shell variables
+@code{HISTIGNORE} and @code{HISTCONTROL}.
+When the shell starts up, the history is initialized from the
+file named by the @code{HISTFILE} variable (default @file{~/.bash_history}).
+@code{HISTFILE} is truncated, if necessary, to contain no more than
+the number of lines specified by the value of the @code{HISTFILESIZE}
+variable. When an interactive shell exits, the last
+@code{HISTSIZE} lines are copied from the history list to @code{HISTFILE}.
+If the @code{histappend} shell option is set (@pxref{Bash Builtins}),
+the lines are appended to the history file,
+otherwise the history file is overwritten.
+If @code{HISTFILE}
+is unset, or if the history file is unwritable, the history is
+not saved. After saving the history, the history file is truncated
+to contain no more than @code{$HISTFILESIZE}
+lines. If @code{HISTFILESIZE} is not set, no truncation is performed.
+
+The builtin command @code{fc} (@pxref{Korn Shell Builtins})
+may be used to list or edit and re-execute a portion of
+the history list. The @code{history} builtin (@pxref{C Shell Builtins})
+can be used to display or modify the history list and
+manipulate the history file.
+When using the command-line editing, search commands
+are available in each editing mode that provide access to the
+history list.
+
+The shell allows control over which commands are saved on the history
+list. The @code{HISTCONTROL} and @code{HISTIGNORE}
+variables may be set to cause the shell to save only a subset of the
+commands entered.
+The @code{cmdhist}
+shell option, if enabled, causes the shell to attempt to save each
+line of a multi-line command in the same history entry, adding
+semicolons where necessary to preserve syntactic correctness.
+The @code{lithist}
+shell option causes the shell to save the command with embedded newlines
+instead of semicolons.
+@xref{Bash Builtins} for a description of @code{shopt}.
+@end ifset
+
+@node History Interaction
+@section Interactive History Expansion
+@cindex history expansion
+
+The History library provides a history expansion feature that is similar
+to the history expansion provided by @code{csh}. This section
+describes the syntax used to manipulate the history information.
+
+History expansions introduce words from the history list into
+the input stream, making it easy to repeat commands, insert the
+arguments to a previous command into the current input line, or
+fix errors in previous commands quickly.
+
+History expansion takes place in two parts. The first is to determine
+which line from the previous history should be used during substitution.
+The second is to select portions of that line for inclusion into the
+current one. The line selected from the previous history is called the
+@dfn{event}, and the portions of that line that are acted upon are
+called @dfn{words}. Various @dfn{modifiers} are available to manipulate
+the selected words. The line is broken into words in the same fashion
+that Bash does, so that several English (or Unix) words
+surrounded by quotes are considered as one word.
+History expansions are introduced by the appearance of the
+history expansion character, which is @samp{!} by default.
+@ifset BashFeatures
+Only @samp{\} and @samp{'} may be used to escape the history expansion
+character.
+@end ifset
+
+@ifset BashFeatures
+Several shell options settable with the @code{shopt}
+builtin (@pxref{Bash Builtins}) may be used to tailor
+the behavior of history expansion. If the
+@code{histverify} shell option is enabled, and Readline
+is being used, history substitutions are not immediately passed to
+the shell parser.
+Instead, the expanded line is reloaded into the Readline
+editing buffer for further modification.
+If Readline is being used, and the @code{histreedit}
+shell option is enabled, a failed history expansion will be
+reloaded into the Readline editing buffer for correction.
+The @samp{-p} option to the @code{history} builtin command
+may be used to see what a history expansion will do before using it.
+The @samp{-s} option to the @code{history} builtin may be used to
+add commands to the end of the history list without actually executing
+them, so that they are available for subsequent recall.
+
+The shell allows control of the various characters used by the
+history expansion mechanism with the @code{histchars} variable.
+@end ifset
+
+@menu
+* Event Designators:: How to specify which history line to use.
+* Word Designators:: Specifying which words are of interest.
+* Modifiers:: Modifying the results of substitution.
+@end menu
+
+@node Event Designators
+@subsection Event Designators
+@cindex event designators
+
+An event designator is a reference to a command line entry in the
+history list.
+@cindex history events
+
+@table @asis
+
+@item @code{!}
+Start a history substitution, except when followed by a space, tab,
+the end of the line, @key{=} or @key{(}.
+
+@item @code{!@var{n}}
+Refer to command line @var{n}.
+
+@item @code{!-@var{n}}
+Refer to the command @var{n} lines back.
+
+@item @code{!!}
+Refer to the previous command. This is a synonym for @samp{!-1}.
+
+@item @code{!@var{string}}
+Refer to the most recent command starting with @var{string}.
+
+@item @code{!?@var{string}[?]}
+Refer to the most recent command containing @var{string}. The trailing
+@samp{?} may be omitted if the @var{string} is followed immediately by
+a newline.
+
+@item @code{^@var{string1}^@var{string2}^}
+Quick Substitution. Repeat the last command, replacing @var{string1}
+with @var{string2}. Equivalent to
+@code{!!:s/@var{string1}/@var{string2}/}.
+
+@item @code{!#}
+The entire command line typed so far.
+
+@end table
+
+@node Word Designators
+@subsection Word Designators
+
+Word designators are used to select desired words from the event.
+A @samp{:} separates the event specification from the word designator. It
+can be omitted if the word designator begins with a @samp{^}, @samp{$},
+@samp{*}, @samp{-}, or @samp{%}. Words are numbered from the beginning
+of the line, with the first word being denoted by 0 (zero). Words are
+inserted into the current line separated by single spaces.
+
+@table @code
+
+@item 0 (zero)
+The @code{0}th word. For many applications, this is the command word.
+
+@item @var{n}
+The @var{n}th word.
+
+@item ^
+The first argument; that is, word 1.
+
+@item $
+The last argument.
+
+@item %
+The word matched by the most recent @samp{?@var{string}?} search.
+
+@item @var{x}-@var{y}
+A range of words; @samp{-@var{y}} abbreviates @samp{0-@var{y}}.
+
+@item *
+All of the words, except the @code{0}th. This is a synonym for @samp{1-$}.
+It is not an error to use @samp{*} if there is just one word in the event;
+the empty string is returned in that case.
+
+@item @var{x}*
+Abbreviates @samp{@var{x}-$}
+
+@item @var{x}-
+Abbreviates @samp{@var{x}-$} like @samp{@var{x}*}, but omits the last word.
+
+@end table
+
+If a word designator is supplied without an event specification, the
+previous command is used as the event.
+
+@node Modifiers
+@subsection Modifiers
+
+After the optional word designator, you can add a sequence of one or more
+of the following modifiers, each preceded by a @samp{:}.
+
+@table @code
+
+@item h
+Remove a trailing pathname component, leaving only the head.
+
+@item t
+Remove all leading pathname components, leaving the tail.
+
+@item r
+Remove a trailing suffix of the form @samp{.@var{suffix}}, leaving
+the basename.
+
+@item e
+Remove all but the trailing suffix.
+
+@item p
+Print the new command but do not execute it.
+
+@ifset BashFeatures
+@item q
+Quote the substituted words, escaping further substitutions.
+
+@item x
+Quote the substituted words as with @samp{q},
+but break into words at spaces, tabs, and newlines.
+@end ifset
+
+@item s/@var{old}/@var{new}/
+Substitute @var{new} for the first occurrence of @var{old} in the
+event line. Any delimiter may be used in place of @samp{/}.
+The delimiter may be quoted in @var{old} and @var{new}
+with a single backslash. If @samp{&} appears in @var{new},
+it is replaced by @var{old}. A single backslash will quote
+the @samp{&}. The final delimiter is optional if it is the last
+character on the input line.
+
+@item &
+Repeat the previous substitution.
+
+@item g
+Cause changes to be applied over the entire event line. Used in
+conjunction with @samp{s}, as in @code{gs/@var{old}/@var{new}/},
+or with @samp{&}.
+
+@end table
diff --git a/contrib/libreadline/doc/rlman.texinfo b/contrib/libreadline/doc/rlman.texinfo
new file mode 100644
index 0000000..655f3db
--- /dev/null
+++ b/contrib/libreadline/doc/rlman.texinfo
@@ -0,0 +1,110 @@
+\input texinfo @c -*-texinfo-*-
+@comment %**start of header (This is for running Texinfo on a region.)
+@setfilename readline.info
+@settitle GNU Readline Library
+@comment %**end of header (This is for running Texinfo on a region.)
+@synindex vr fn
+@setchapternewpage odd
+
+@ignore
+last change: Thu Mar 21 16:06:39 EST 1996
+@end ignore
+
+@set EDITION 2.1
+@set VERSION 2.1
+@set UPDATED 21 March 1996
+@set UPDATE-MONTH March 1996
+
+@ifinfo
+This document describes the GNU Readline Library, a utility which aids
+in the consistency of user interface across discrete programs that need
+to provide a command line interface.
+
+Copyright (C) 1988, 1991 Free Software Foundation, Inc.
+
+Permission is granted to make and distribute verbatim copies of
+this manual provided the copyright notice and this permission notice
+pare preserved on all copies.
+
+@ignore
+Permission is granted to process this file through TeX and print the
+results, provided the printed document carries copying permission
+notice identical to this one except for the removal of this paragraph
+(this paragraph not being relevant to the printed manual).
+@end ignore
+
+Permission is granted to copy and distribute modified versions of this
+manual under the conditions for verbatim copying, provided that the entire
+resulting derived work is distributed under the terms of a permission
+notice identical to this one.
+
+Permission is granted to copy and distribute translations of this manual
+into another language, under the above conditions for modified versions,
+except that this permission notice may be stated in a translation approved
+by the Foundation.
+@end ifinfo
+
+@titlepage
+@title GNU Readline Library
+@subtitle Edition @value{EDITION}, for @code{Readline Library} Version @value{VERSION}.
+@subtitle @value{UPDATE-MONTH}
+@author Brian Fox, Free Software Foundation
+@author Chet Ramey, Case Western Reserve University
+
+@page
+This document describes the GNU Readline Library, a utility which aids
+in the consistency of user interface across discrete programs that need
+to provide a command line interface.
+
+Published by the Free Software Foundation @*
+675 Massachusetts Avenue, @*
+Cambridge, MA 02139 USA
+
+Permission is granted to make and distribute verbatim copies of
+this manual provided the copyright notice and this permission notice
+are preserved on all copies.
+
+Permission is granted to copy and distribute modified versions of this
+manual under the conditions for verbatim copying, provided that the entire
+resulting derived work is distributed under the terms of a permission
+notice identical to this one.
+
+Permission is granted to copy and distribute translations of this manual
+into another language, under the above conditions for modified versions,
+except that this permission notice may be stated in a translation approved
+by the Foundation.
+
+@vskip 0pt plus 1filll
+Copyright @copyright{} 1989, 1991 Free Software Foundation, Inc.
+@end titlepage
+
+@ifinfo
+@node Top
+@top GNU Readline Library
+
+This document describes the GNU Readline Library, a utility which aids
+in the consistency of user interface across discrete programs that need
+to provide a command line interface.
+
+@menu
+* Command Line Editing:: GNU Readline User's Manual.
+* Programming with GNU Readline:: GNU Readline Programmer's Manual.
+* Concept Index:: Index of concepts described in this manual.
+* Function and Variable Index:: Index of externally visible functions
+ and variables.
+@end menu
+@end ifinfo
+
+@include rluser.texinfo
+@include rltech.texinfo
+
+@node Concept Index
+@unnumbered Concept Index
+@printindex cp
+
+@node Function and Variable Index
+@unnumbered Function and Variable Index
+@printindex fn
+
+@contents
+@bye
diff --git a/contrib/libreadline/doc/rltech.texinfo b/contrib/libreadline/doc/rltech.texinfo
new file mode 100644
index 0000000..6704d0e
--- /dev/null
+++ b/contrib/libreadline/doc/rltech.texinfo
@@ -0,0 +1,1530 @@
+@comment %**start of header (This is for running Texinfo on a region.)
+@setfilename rltech.info
+@comment %**end of header (This is for running Texinfo on a region.)
+@setchapternewpage odd
+
+@ifinfo
+This document describes the GNU Readline Library, a utility for aiding
+in the consitency of user interface across discrete programs that need
+to provide a command line interface.
+
+Copyright (C) 1988, 1994, 1996 Free Software Foundation, Inc.
+
+Permission is granted to make and distribute verbatim copies of
+this manual provided the copyright notice and this permission notice
+pare preserved on all copies.
+
+@ignore
+Permission is granted to process this file through TeX and print the
+results, provided the printed document carries copying permission
+notice identical to this one except for the removal of this paragraph
+(this paragraph not being relevant to the printed manual).
+@end ignore
+
+Permission is granted to copy and distribute modified versions of this
+manual under the conditions for verbatim copying, provided that the entire
+resulting derived work is distributed under the terms of a permission
+notice identical to this one.
+
+Permission is granted to copy and distribute translations of this manual
+into another language, under the above conditions for modified versions,
+except that this permission notice may be stated in a translation approved
+by the Foundation.
+@end ifinfo
+
+@node Programming with GNU Readline
+@chapter Programming with GNU Readline
+
+This chapter describes the interface between the GNU Readline Library and
+other programs. If you are a programmer, and you wish to include the
+features found in GNU Readline
+such as completion, line editing, and interactive history manipulation
+in your own programs, this section is for you.
+
+@menu
+* Basic Behavior:: Using the default behavior of Readline.
+* Custom Functions:: Adding your own functions to Readline.
+* Readline Variables:: Variables accessible to custom
+ functions.
+* Readline Convenience Functions:: Functions which Readline supplies to
+ aid in writing your own
+* Custom Completers:: Supplanting or supplementing Readline's
+ completion functions.
+@end menu
+
+@node Basic Behavior
+@section Basic Behavior
+
+Many programs provide a command line interface, such as @code{mail},
+@code{ftp}, and @code{sh}. For such programs, the default behaviour of
+Readline is sufficient. This section describes how to use Readline in
+the simplest way possible, perhaps to replace calls in your code to
+@code{gets()} or @code{fgets ()}.
+
+@findex readline
+@cindex readline, function
+The function @code{readline ()} prints a prompt and then reads and returns
+a single line of text from the user. The line @code{readline}
+returns is allocated with @code{malloc ()}; you should @code{free ()}
+the line when you are done with it. The declaration for @code{readline}
+in ANSI C is
+
+@example
+@code{char *readline (char *@var{prompt});}
+@end example
+
+@noindent
+So, one might say
+@example
+@code{char *line = readline ("Enter a line: ");}
+@end example
+@noindent
+in order to read a line of text from the user.
+The line returned has the final newline removed, so only the
+text remains.
+
+If @code{readline} encounters an @code{EOF} while reading the line, and the
+line is empty at that point, then @code{(char *)NULL} is returned.
+Otherwise, the line is ended just as if a newline had been typed.
+
+If you want the user to be able to get at the line later, (with
+@key{C-p} for example), you must call @code{add_history ()} to save the
+line away in a @dfn{history} list of such lines.
+
+@example
+@code{add_history (line)};
+@end example
+
+@noindent
+For full details on the GNU History Library, see the associated manual.
+
+It is preferable to avoid saving empty lines on the history list, since
+users rarely have a burning need to reuse a blank line. Here is
+a function which usefully replaces the standard @code{gets ()} library
+function, and has the advantage of no static buffer to overflow:
+
+@example
+/* A static variable for holding the line. */
+static char *line_read = (char *)NULL;
+
+/* Read a string, and return a pointer to it. Returns NULL on EOF. */
+char *
+rl_gets ()
+@{
+ /* If the buffer has already been allocated, return the memory
+ to the free pool. */
+ if (line_read)
+ @{
+ free (line_read);
+ line_read = (char *)NULL;
+ @}
+
+ /* Get a line from the user. */
+ line_read = readline ("");
+
+ /* If the line has any text in it, save it on the history. */
+ if (line_read && *line_read)
+ add_history (line_read);
+
+ return (line_read);
+@}
+@end example
+
+This function gives the user the default behaviour of @key{TAB}
+completion: completion on file names. If you do not want Readline to
+complete on filenames, you can change the binding of the @key{TAB} key
+with @code{rl_bind_key ()}.
+
+@example
+@code{int rl_bind_key (int @var{key}, int (*@var{function})());}
+@end example
+
+@code{rl_bind_key ()} takes two arguments: @var{key} is the character that
+you want to bind, and @var{function} is the address of the function to
+call when @var{key} is pressed. Binding @key{TAB} to @code{rl_insert ()}
+makes @key{TAB} insert itself.
+@code{rl_bind_key ()} returns non-zero if @var{key} is not a valid
+ASCII character code (between 0 and 255).
+
+Thus, to disable the default @key{TAB} behavior, the following suffices:
+@example
+@code{rl_bind_key ('\t', rl_insert);}
+@end example
+
+This code should be executed once at the start of your program; you
+might write a function called @code{initialize_readline ()} which
+performs this and other desired initializations, such as installing
+custom completers (@pxref{Custom Completers}).
+
+@node Custom Functions
+@section Custom Functions
+
+Readline provides many functions for manipulating the text of
+the line, but it isn't possible to anticipate the needs of all
+programs. This section describes the various functions and variables
+defined within the Readline library which allow a user program to add
+customized functionality to Readline.
+
+@menu
+* The Function Type:: C declarations to make code readable.
+* Function Writing:: Variables and calling conventions.
+@end menu
+
+@node The Function Type
+@subsection The Function Type
+
+For readabilty, we declare a new type of object, called
+@dfn{Function}. A @code{Function} is a C function which
+returns an @code{int}. The type declaration for @code{Function} is:
+
+@noindent
+@code{typedef int Function ();}
+
+The reason for declaring this new type is to make it easier to write
+code describing pointers to C functions. Let us say we had a variable
+called @var{func} which was a pointer to a function. Instead of the
+classic C declaration
+
+@code{int (*)()func;}
+
+@noindent
+we may write
+
+@code{Function *func;}
+
+@noindent
+Similarly, there are
+
+@example
+typedef void VFunction ();
+typedef char *CPFunction (); @r{and}
+typedef char **CPPFunction ();
+@end example
+
+@noindent
+for functions returning no value, @code{pointer to char}, and
+@code{pointer to pointer to char}, respectively.
+
+@node Function Writing
+@subsection Writing a New Function
+
+In order to write new functions for Readline, you need to know the
+calling conventions for keyboard-invoked functions, and the names of the
+variables that describe the current state of the line read so far.
+
+The calling sequence for a command @code{foo} looks like
+
+@example
+@code{foo (int count, int key)}
+@end example
+
+@noindent
+where @var{count} is the numeric argument (or 1 if defaulted) and
+@var{key} is the key that invoked this function.
+
+It is completely up to the function as to what should be done with the
+numeric argument. Some functions use it as a repeat count, some
+as a flag, and others to choose alternate behavior (refreshing the current
+line as opposed to refreshing the screen, for example). Some choose to
+ignore it. In general, if a
+function uses the numeric argument as a repeat count, it should be able
+to do something useful with both negative and positive arguments.
+At the very least, it should be aware that it can be passed a
+negative argument.
+
+@node Readline Variables
+@section Readline Variables
+
+These variables are available to function writers.
+
+@deftypevar {char *} rl_line_buffer
+This is the line gathered so far. You are welcome to modify the
+contents of the line, but see @ref{Allowing Undoing}.
+@end deftypevar
+
+@deftypevar int rl_point
+The offset of the current cursor position in @code{rl_line_buffer}
+(the @emph{point}).
+@end deftypevar
+
+@deftypevar int rl_end
+The number of characters present in @code{rl_line_buffer}. When
+@code{rl_point} is at the end of the line, @code{rl_point} and
+@code{rl_end} are equal.
+@end deftypevar
+
+@deftypevar int rl_mark
+The mark (saved position) in the current line. If set, the mark
+and point define a @emph{region}.
+@end deftypevar
+
+@deftypevar int rl_done
+Setting this to a non-zero value causes Readline to return the current
+line immediately.
+@end deftypevar
+
+@deftypevar int rl_pending_input
+Setting this to a value makes it the next keystroke read. This is a
+way to stuff a single character into the input stream.
+@end deftypevar
+
+@deftypevar {char *} rl_prompt
+The prompt Readline uses. This is set from the argument to
+@code{readline ()}, and should not be assigned to directly.
+@end deftypevar
+
+@deftypevar {char *} rl_library_version
+The version number of this revision of the library.
+@end deftypevar
+
+@deftypevar {char *} rl_terminal_name
+The terminal type, used for initialization.
+@end deftypevar
+
+@deftypevar {char *} rl_readline_name
+This variable is set to a unique name by each application using Readline.
+The value allows conditional parsing of the inputrc file
+(@pxref{Conditional Init Constructs}).
+@end deftypevar
+
+@deftypevar {FILE *} rl_instream
+The stdio stream from which Readline reads input.
+@end deftypevar
+
+@deftypevar {FILE *} rl_outstream
+The stdio stream to which Readline performs output.
+@end deftypevar
+
+@deftypevar {Function *} rl_startup_hook
+If non-zero, this is the address of a function to call just
+before @code{readline} prints the first prompt.
+@end deftypevar
+
+@deftypevar {Function *} rl_event_hook
+If non-zero, this is the address of a function to call periodically
+when readline is waiting for terminal input.
+@end deftypevar
+
+@deftypevar {Function *} rl_getc_function
+If non-zero, @code{readline} will call indirectly through this pointer
+to get a character from the input stream. By default, it is set to
+@code{rl_getc}, the default @code{readline} character input function
+(@pxref{Utility Functions}).
+@end deftypevar
+
+@deftypevar {Function *} rl_redisplay_function
+If non-zero, @code{readline} will call indirectly through this pointer
+to update the display with the current contents of the editing buffer.
+By default, it is set to @code{rl_redisplay}, the default @code{readline}
+redisplay function (@pxref{Redisplay}).
+@end deftypevar
+
+@deftypevar {Keymap} rl_executing_keymap
+This variable is set to the keymap (@pxref{Keymaps}) in which the
+currently executing readline function was found.
+@end deftypevar
+
+@deftypevar {Keymap} rl_binding_keymap
+This variable is set to the keymap (@pxref{Keymaps}) in which the
+last key binding occurred.
+@end deftypevar
+
+@node Readline Convenience Functions
+@section Readline Convenience Functions
+
+@menu
+* Function Naming:: How to give a function you write a name.
+* Keymaps:: Making keymaps.
+* Binding Keys:: Changing Keymaps.
+* Associating Function Names and Bindings:: Translate function names to
+ key sequences.
+* Allowing Undoing:: How to make your functions undoable.
+* Redisplay:: Functions to control line display.
+* Modifying Text:: Functions to modify @code{rl_line_buffer}.
+* Utility Functions:: Generally useful functions and hooks.
+* Alternate Interface:: Using Readline in a `callback' fashion.
+@end menu
+
+@node Function Naming
+@subsection Naming a Function
+
+The user can dynamically change the bindings of keys while using
+Readline. This is done by representing the function with a descriptive
+name. The user is able to type the descriptive name when referring to
+the function. Thus, in an init file, one might find
+
+@example
+Meta-Rubout: backward-kill-word
+@end example
+
+This binds the keystroke @key{Meta-Rubout} to the function
+@emph{descriptively} named @code{backward-kill-word}. You, as the
+programmer, should bind the functions you write to descriptive names as
+well. Readline provides a function for doing that:
+
+@deftypefun int rl_add_defun (char *name, Function *function, int key)
+Add @var{name} to the list of named functions. Make @var{function} be
+the function that gets called. If @var{key} is not -1, then bind it to
+@var{function} using @code{rl_bind_key ()}.
+@end deftypefun
+
+Using this function alone is sufficient for most applications. It is
+the recommended way to add a few functions to the default functions that
+Readline has built in. If you need to do something other
+than adding a function to Readline, you may need to use the
+underlying functions described below.
+
+@node Keymaps
+@subsection Selecting a Keymap
+
+Key bindings take place on a @dfn{keymap}. The keymap is the
+association between the keys that the user types and the functions that
+get run. You can make your own keymaps, copy existing keymaps, and tell
+Readline which keymap to use.
+
+@deftypefun Keymap rl_make_bare_keymap ()
+Returns a new, empty keymap. The space for the keymap is allocated with
+@code{malloc ()}; you should @code{free ()} it when you are done.
+@end deftypefun
+
+@deftypefun Keymap rl_copy_keymap (Keymap map)
+Return a new keymap which is a copy of @var{map}.
+@end deftypefun
+
+@deftypefun Keymap rl_make_keymap ()
+Return a new keymap with the printing characters bound to rl_insert,
+the lowercase Meta characters bound to run their equivalents, and
+the Meta digits bound to produce numeric arguments.
+@end deftypefun
+
+@deftypefun void rl_discard_keymap (Keymap keymap)
+Free the storage associated with @var{keymap}.
+@end deftypefun
+
+Readline has several internal keymaps. These functions allow you to
+change which keymap is active.
+
+@deftypefun Keymap rl_get_keymap ()
+Returns the currently active keymap.
+@end deftypefun
+
+@deftypefun void rl_set_keymap (Keymap keymap)
+Makes @var{keymap} the currently active keymap.
+@end deftypefun
+
+@deftypefun Keymap rl_get_keymap_by_name (char *name)
+Return the keymap matching @var{name}. @var{name} is one which would
+be supplied in a @code{set keymap} inputrc line (@pxref{Readline Init File}).
+@end deftypefun
+
+@node Binding Keys
+@subsection Binding Keys
+
+You associate keys with functions through the keymap. Readline has
+several internal keymaps: @code{emacs_standard_keymap},
+@code{emacs_meta_keymap}, @code{emacs_ctlx_keymap},
+@code{vi_movement_keymap}, and @code{vi_insertion_keymap}.
+@code{emacs_standard_keymap} is the default, and the examples in
+this manual assume that.
+
+These functions manage key bindings.
+
+@deftypefun int rl_bind_key (int key, Function *function)
+Binds @var{key} to @var{function} in the currently active keymap.
+Returns non-zero in the case of an invalid @var{key}.
+@end deftypefun
+
+@deftypefun int rl_bind_key_in_map (int key, Function *function, Keymap map)
+Bind @var{key} to @var{function} in @var{map}. Returns non-zero in the case
+of an invalid @var{key}.
+@end deftypefun
+
+@deftypefun int rl_unbind_key (int key)
+Bind @var{key} to the null function in the currently active keymap.
+Returns non-zero in case of error.
+@end deftypefun
+
+@deftypefun int rl_unbind_key_in_map (int key, Keymap map)
+Bind @var{key} to the null function in @var{map}.
+Returns non-zero in case of error.
+@end deftypefun
+
+@deftypefun int rl_generic_bind (int type, char *keyseq, char *data, Keymap map)
+Bind the key sequence represented by the string @var{keyseq} to the arbitrary
+pointer @var{data}. @var{type} says what kind of data is pointed to by
+@var{data}; this can be a function (@code{ISFUNC}), a macro
+(@code{ISMACR}), or a keymap (@code{ISKMAP}). This makes new keymaps as
+necessary. The initial keymap in which to do bindings is @var{map}.
+@end deftypefun
+
+@deftypefun int rl_parse_and_bind (char *line)
+Parse @var{line} as if it had been read from the @code{inputrc} file and
+perform any key bindings and variable assignments found
+(@pxref{Readline Init File}).
+@end deftypefun
+
+@deftypefun int rl_read_init_file (char *filename)
+Read keybindings and variable assignments from @var{filename}
+(@pxref{Readline Init File}).
+@end deftypefun
+
+@node Associating Function Names and Bindings
+@subsection Associating Function Names and Bindings
+
+These functions allow you to find out what keys invoke named functions
+and the functions invoked by a particular key sequence.
+
+@deftypefun {Function *} rl_named_function (char *name)
+Return the function with name @var{name}.
+@end deftypefun
+
+@deftypefun {Function *} rl_function_of_keyseq (char *keyseq, Keymap map, int *type)
+Return the function invoked by @var{keyseq} in keymap @var{map}.
+If @var{map} is NULL, the current keymap is used. If @var{type} is
+not NULL, the type of the object is returned in it (one of @code{ISFUNC},
+@code{ISKMAP}, or @code{ISMACR}).
+@end deftypefun
+
+@deftypefun {char **} rl_invoking_keyseqs (Function *function)
+Return an array of strings representing the key sequences used to
+invoke @var{function} in the current keymap.
+@end deftypefun
+
+@deftypefun {char **} rl_invoking_keyseqs_in_map (Function *function, Keymap map)
+Return an array of strings representing the key sequences used to
+invoke @var{function} in the keymap @var{map}.
+@end deftypefun
+
+@deftypefun void rl_function_dumper (int readable)
+Print the readline function names and the key sequences currently
+bound to them to @code{rl_outstream}. If @var{readable} is non-zero,
+the list is formatted in such a way that it can be made part of an
+@code{inputrc} file and re-read.
+@end deftypefun
+
+@deftypefun void rl_list_funmap_names ()
+Print the names of all bindable Readline functions to @code{rl_outstream}.
+@end deftypefun
+
+@node Allowing Undoing
+@subsection Allowing Undoing
+
+Supporting the undo command is a painless thing, and makes your
+functions much more useful. It is certainly easy to try
+something if you know you can undo it. I could use an undo function for
+the stock market.
+
+If your function simply inserts text once, or deletes text once, and
+uses @code{rl_insert_text ()} or @code{rl_delete_text ()} to do it, then
+undoing is already done for you automatically.
+
+If you do multiple insertions or multiple deletions, or any combination
+of these operations, you should group them together into one operation.
+This is done with @code{rl_begin_undo_group ()} and
+@code{rl_end_undo_group ()}.
+
+The types of events that can be undone are:
+
+@example
+enum undo_code @{ UNDO_DELETE, UNDO_INSERT, UNDO_BEGIN, UNDO_END @};
+@end example
+
+Notice that @code{UNDO_DELETE} means to insert some text, and
+@code{UNDO_INSERT} means to delete some text. That is, the undo code
+tells undo what to undo, not how to undo it. @code{UNDO_BEGIN} and
+@code{UNDO_END} are tags added by @code{rl_begin_undo_group ()} and
+@code{rl_end_undo_group ()}.
+
+@deftypefun int rl_begin_undo_group ()
+Begins saving undo information in a group construct. The undo
+information usually comes from calls to @code{rl_insert_text ()} and
+@code{rl_delete_text ()}, but could be the result of calls to
+@code{rl_add_undo ()}.
+@end deftypefun
+
+@deftypefun int rl_end_undo_group ()
+Closes the current undo group started with @code{rl_begin_undo_group
+()}. There should be one call to @code{rl_end_undo_group ()}
+for each call to @code{rl_begin_undo_group ()}.
+@end deftypefun
+
+@deftypefun void rl_add_undo (enum undo_code what, int start, int end, char *text)
+Remember how to undo an event (according to @var{what}). The affected
+text runs from @var{start} to @var{end}, and encompasses @var{text}.
+@end deftypefun
+
+@deftypefun void free_undo_list ()
+Free the existing undo list.
+@end deftypefun
+
+@deftypefun int rl_do_undo ()
+Undo the first thing on the undo list. Returns @code{0} if there was
+nothing to undo, non-zero if something was undone.
+@end deftypefun
+
+Finally, if you neither insert nor delete text, but directly modify the
+existing text (e.g., change its case), call @code{rl_modifying ()}
+once, just before you modify the text. You must supply the indices of
+the text range that you are going to modify.
+
+@deftypefun int rl_modifying (int start, int end)
+Tell Readline to save the text between @var{start} and @var{end} as a
+single undo unit. It is assumed that you will subsequently modify
+that text.
+@end deftypefun
+
+@node Redisplay
+@subsection Redisplay
+
+@deftypefun int rl_redisplay ()
+Change what's displayed on the screen to reflect the current contents
+of @code{rl_line_buffer}.
+@end deftypefun
+
+@deftypefun int rl_forced_update_display ()
+Force the line to be updated and redisplayed, whether or not
+Readline thinks the screen display is correct.
+@end deftypefun
+
+@deftypefun int rl_on_new_line ()
+Tell the update routines that we have moved onto a new (empty) line,
+usually after ouputting a newline.
+@end deftypefun
+
+@deftypefun int rl_reset_line_state ()
+Reset the display state to a clean state and redisplay the current line
+starting on a new line.
+@end deftypefun
+
+@deftypefun int rl_message (va_alist)
+The arguments are a string as would be supplied to @code{printf}. The
+resulting string is displayed in the @dfn{echo area}. The echo area
+is also used to display numeric arguments and search strings.
+@end deftypefun
+
+@deftypefun int rl_clear_message ()
+Clear the message in the echo area.
+@end deftypefun
+
+@node Modifying Text
+@subsection Modifying Text
+
+@deftypefun int rl_insert_text (char *text)
+Insert @var{text} into the line at the current cursor position.
+@end deftypefun
+
+@deftypefun int rl_delete_text (int start, int end)
+Delete the text between @var{start} and @var{end} in the current line.
+@end deftypefun
+
+@deftypefun {char *} rl_copy_text (int start, int end)
+Return a copy of the text between @var{start} and @var{end} in
+the current line.
+@end deftypefun
+
+@deftypefun int rl_kill_text (int start, int end)
+Copy the text between @var{start} and @var{end} in the current line
+to the kill ring, appending or prepending to the last kill if the
+last command was a kill command. The text is deleted.
+If @var{start} is less than @var{end},
+the text is appended, otherwise prepended. If the last command was
+not a kill, a new kill ring slot is used.
+@end deftypefun
+
+@node Utility Functions
+@subsection Utility Functions
+
+@deftypefun int rl_read_key ()
+Return the next character available. This handles input inserted into
+the input stream via @var{pending input} (@pxref{Readline Variables})
+and @code{rl_stuff_char ()}, macros, and characters read from the keyboard.
+@end deftypefun
+
+@deftypefun int rl_getc (FILE *)
+Return the next character available from the keyboard.
+@end deftypefun
+
+@deftypefun int rl_stuff_char (int c)
+Insert @var{c} into the Readline input stream. It will be "read"
+before Readline attempts to read characters from the terminal with
+@code{rl_read_key ()}.
+@end deftypefun
+
+@deftypefun int rl_initialize ()
+Initialize or re-initialize Readline's internal state.
+@end deftypefun
+
+@deftypefun int rl_reset_terminal (char *terminal_name)
+Reinitialize Readline's idea of the terminal settings using
+@var{terminal_name} as the terminal type (e.g., @code{vt100}).
+@end deftypefun
+
+@deftypefun int alphabetic (int c)
+Return 1 if @var{c} is an alphabetic character.
+@end deftypefun
+
+@deftypefun int numeric (int c)
+Return 1 if @var{c} is a numeric character.
+@end deftypefun
+
+@deftypefun int ding ()
+Ring the terminal bell, obeying the setting of @code{bell-style}.
+@end deftypefun
+
+The following are implemented as macros, defined in @code{chartypes.h}.
+
+@deftypefun int uppercase_p (int c)
+Return 1 if @var{c} is an uppercase alphabetic character.
+@end deftypefun
+
+@deftypefun int lowercase_p (int c)
+Return 1 if @var{c} is a lowercase alphabetic character.
+@end deftypefun
+
+@deftypefun int digit_p (int c)
+Return 1 if @var{c} is a numeric character.
+@end deftypefun
+
+@deftypefun int to_upper (int c)
+If @var{c} is a lowercase alphabetic character, return the corresponding
+uppercase character.
+@end deftypefun
+
+@deftypefun int to_lower (int c)
+If @var{c} is an uppercase alphabetic character, return the corresponding
+lowercase character.
+@end deftypefun
+
+@deftypefun int digit_value (int c)
+If @var{c} is a number, return the value it represents.
+@end deftypefun
+
+@node Alternate Interface
+@subsection Alternate Interface
+
+An alternate interface is available to plain @code{readline()}. Some
+applications need to interleave keyboard I/O with file, device, or
+window system I/O, typically by using a main loop to @code{select()}
+on various file descriptors. To accomodate this need, readline can
+also be invoked as a `callback' function from an event loop. There
+are functions available to make this easy.
+
+@deftypefun void rl_callback_handler_install (char *prompt, Vfunction *lhandler)
+Set up the terminal for readline I/O and display the initial
+expanded value of @var{prompt}. Save the value of @var{lhandler} to
+use as a callback when a complete line of input has been entered.
+@end deftypefun
+
+@deftypefun void rl_callback_read_char ()
+Whenever an application determines that keyboard input is available, it
+should call @code{rl_callback_read_char()}, which will read the next
+character from the current input source. If that character completes the
+line, @code{rl_callback_read_char} will invoke the @var{lhandler}
+function saved by @code{rl_callback_handler_install} to process the
+line. @code{EOF} is indicated by calling @var{lhandler} with a
+@code{NULL} line.
+@end deftypefun
+
+@deftypefun void rl_callback_handler_remove ()
+Restore the terminal to its initial state and remove the line handler.
+This may be called from within a callback as well as independently.
+@end deftypefun
+
+@subsection An Example
+
+Here is a function which changes lowercase characters to their uppercase
+equivalents, and uppercase characters to lowercase. If
+this function was bound to @samp{M-c}, then typing @samp{M-c} would
+change the case of the character under point. Typing @samp{M-1 0 M-c}
+would change the case of the following 10 characters, leaving the cursor on
+the last character changed.
+
+@example
+/* Invert the case of the COUNT following characters. */
+int
+invert_case_line (count, key)
+ int count, key;
+@{
+ register int start, end, i;
+
+ start = rl_point;
+
+ if (rl_point >= rl_end)
+ return (0);
+
+ if (count < 0)
+ @{
+ direction = -1;
+ count = -count;
+ @}
+ else
+ direction = 1;
+
+ /* Find the end of the range to modify. */
+ end = start + (count * direction);
+
+ /* Force it to be within range. */
+ if (end > rl_end)
+ end = rl_end;
+ else if (end < 0)
+ end = 0;
+
+ if (start == end)
+ return (0);
+
+ if (start > end)
+ @{
+ int temp = start;
+ start = end;
+ end = temp;
+ @}
+
+ /* Tell readline that we are modifying the line, so it will save
+ the undo information. */
+ rl_modifying (start, end);
+
+ for (i = start; i != end; i++)
+ @{
+ if (uppercase_p (rl_line_buffer[i]))
+ rl_line_buffer[i] = to_lower (rl_line_buffer[i]);
+ else if (lowercase_p (rl_line_buffer[i]))
+ rl_line_buffer[i] = to_upper (rl_line_buffer[i]);
+ @}
+ /* Move point to on top of the last character changed. */
+ rl_point = (direction == 1) ? end - 1 : start;
+ return (0);
+@}
+@end example
+
+@node Custom Completers
+@section Custom Completers
+
+Typically, a program that reads commands from the user has a way of
+disambiguating commands and data. If your program is one of these, then
+it can provide completion for commands, data, or both.
+The following sections describe how your program and Readline
+cooperate to provide this service.
+
+@menu
+* How Completing Works:: The logic used to do completion.
+* Completion Functions:: Functions provided by Readline.
+* Completion Variables:: Variables which control completion.
+* A Short Completion Example:: An example of writing completer subroutines.
+@end menu
+
+@node How Completing Works
+@subsection How Completing Works
+
+In order to complete some text, the full list of possible completions
+must be available. That is, it is not possible to accurately
+expand a partial word without knowing all of the possible words
+which make sense in that context. The Readline library provides
+the user interface to completion, and two of the most common
+completion functions: filename and username. For completing other types
+of text, you must write your own completion function. This section
+describes exactly what such functions must do, and provides an example.
+
+There are three major functions used to perform completion:
+
+@enumerate
+@item
+The user-interface function @code{rl_complete ()}. This function is
+called with the same arguments as other Readline
+functions intended for interactive use: @var{count} and
+@var{invoking_key}. It isolates the word to be completed and calls
+@code{completion_matches ()} to generate a list of possible completions.
+It then either lists the possible completions, inserts the possible
+completions, or actually performs the
+completion, depending on which behavior is desired.
+
+@item
+The internal function @code{completion_matches ()} uses your
+@dfn{generator} function to generate the list of possible matches, and
+then returns the array of these matches. You should place the address
+of your generator function in @code{rl_completion_entry_function}.
+
+@item
+The generator function is called repeatedly from
+@code{completion_matches ()}, returning a string each time. The
+arguments to the generator function are @var{text} and @var{state}.
+@var{text} is the partial word to be completed. @var{state} is zero the
+first time the function is called, allowing the generator to perform
+any necessary initialization, and a positive non-zero integer for
+each subsequent call. When the generator function returns
+@code{(char *)NULL} this signals @code{completion_matches ()} that there are
+no more possibilities left. Usually the generator function computes the
+list of possible completions when @var{state} is zero, and returns them
+one at a time on subsequent calls. Each string the generator function
+returns as a match must be allocated with @code{malloc()}; Readline
+frees the strings when it has finished with them.
+
+@end enumerate
+
+@deftypefun int rl_complete (int ignore, int invoking_key)
+Complete the word at or before point. You have supplied the function
+that does the initial simple matching selection algorithm (see
+@code{completion_matches ()}). The default is to do filename completion.
+@end deftypefun
+
+@deftypevar {Function *} rl_completion_entry_function
+This is a pointer to the generator function for @code{completion_matches
+()}. If the value of @code{rl_completion_entry_function} is
+@code{(Function *)NULL} then the default filename generator function,
+@code{filename_entry_function ()}, is used.
+@end deftypevar
+
+@node Completion Functions
+@subsection Completion Functions
+
+Here is the complete list of callable completion functions present in
+Readline.
+
+@deftypefun int rl_complete_internal (int what_to_do)
+Complete the word at or before point. @var{what_to_do} says what to do
+with the completion. A value of @samp{?} means list the possible
+completions. @samp{TAB} means do standard completion. @samp{*} means
+insert all of the possible completions. @samp{!} means to display
+all of the possible completions, if there is more than one, as well as
+performing partial completion.
+@end deftypefun
+
+@deftypefun int rl_complete (int ignore, int invoking_key)
+Complete the word at or before point. You have supplied the function
+that does the initial simple matching selection algorithm (see
+@code{completion_matches ()} and @code{rl_completion_entry_function}).
+The default is to do filename
+completion. This calls @code{rl_complete_internal ()} with an
+argument depending on @var{invoking_key}.
+@end deftypefun
+
+@deftypefun int rl_possible_completions (int count, int invoking_key))
+List the possible completions. See description of @code{rl_complete
+()}. This calls @code{rl_complete_internal ()} with an argument of
+@samp{?}.
+@end deftypefun
+
+@deftypefun int rl_insert_completions (int count, int invoking_key))
+Insert the list of possible completions into the line, deleting the
+partially-completed word. See description of @code{rl_complete ()}.
+This calls @code{rl_complete_internal ()} with an argument of @samp{*}.
+@end deftypefun
+
+@deftypefun {char **} completion_matches (char *text, CPFunction *entry_func)
+Returns an array of @code{(char *)} which is a list of completions for
+@var{text}. If there are no completions, returns @code{(char **)NULL}.
+The first entry in the returned array is the substitution for @var{text}.
+The remaining entries are the possible completions. The array is
+terminated with a @code{NULL} pointer.
+
+@var{entry_func} is a function of two args, and returns a
+@code{(char *)}. The first argument is @var{text}. The second is a
+state argument; it is zero on the first call, and non-zero on subsequent
+calls. @var{entry_func} returns a @code{NULL} pointer to the caller
+when there are no more matches.
+@end deftypefun
+
+@deftypefun {char *} filename_completion_function (char *text, int state)
+A generator function for filename completion in the general case. Note
+that completion in Bash is a little different because of all
+the pathnames that must be followed when looking up completions for a
+command. The Bash source is a useful reference for writing custom
+completion functions.
+@end deftypefun
+
+@deftypefun {char *} username_completion_function (char *text, int state)
+A completion generator for usernames. @var{text} contains a partial
+username preceded by a random character (usually @samp{~}). As with all
+completion generators, @var{state} is zero on the first call and non-zero
+for subsequent calls.
+@end deftypefun
+
+@node Completion Variables
+@subsection Completion Variables
+
+@deftypevar {Function *} rl_completion_entry_function
+A pointer to the generator function for @code{completion_matches ()}.
+@code{NULL} means to use @code{filename_entry_function ()}, the default
+filename completer.
+@end deftypevar
+
+@deftypevar {CPPFunction *} rl_attempted_completion_function
+A pointer to an alternative function to create matches.
+The function is called with @var{text}, @var{start}, and @var{end}.
+@var{start} and @var{end} are indices in @code{rl_line_buffer} saying
+what the boundaries of @var{text} are. If this function exists and
+returns @code{NULL}, or if this variable is set to @code{NULL}, then
+@code{rl_complete ()} will call the value of
+@code{rl_completion_entry_function} to generate matches, otherwise the
+array of strings returned will be used.
+@end deftypevar
+
+@deftypevar {CPFunction *} rl_filename_quoting_function
+A pointer to a function that will quote a filename in an application-
+specific fashion. This is called if filename completion is being
+attempted and one of the characters in @code{rl_filename_quote_characters}
+appears in a completed filename. The function is called with
+@var{text}, @var{match_type}, and @var{quote_pointer}. The @var{text}
+is the filename to be quoted. The @var{match_type} is either
+@code{SINGLE_MATCH}, if there is only one completion match, or
+@code{MULT_MATCH}. Some functions use this to decide whether or not to
+insert a closing quote character. The @var{quote_pointer} is a pointer
+to any opening quote character the user typed. Some functions choose
+to reset this character.
+@end deftypevar
+
+@deftypevar {CPFunction *} rl_filename_dequoting_function
+A pointer to a function that will remove application-specific quoting
+characters from a filename before completion is attempted, so those
+characters do not interfere with matching the text against names in
+the filesystem. It is called with @var{text}, the text of the word
+to be dequoted, and @var{quote_char}, which is the quoting character
+that delimits the filename (usually @samp{'} or @samp{"}). If
+@var{quote_char} is zero, the filename was not in an embedded string.
+@end deftypevar
+
+@deftypevar {Function *} rl_char_is_quoted_p
+A pointer to a function to call that determines whether or not a specific
+character in the line buffer is quoted, according to whatever quoting
+mechanism the program calling readline uses. The function is called with
+two arguments: @var{text}, the text of the line, and @var{index}, the
+index of the character in the line. It is used to decide whether a
+character found in @code{rl_completer_word_break_characters} should be
+used to break words for the completer.
+@end deftypevar
+
+@deftypevar int rl_completion_query_items
+Up to this many items will be displayed in response to a
+possible-completions call. After that, we ask the user if she is sure
+she wants to see them all. The default value is 100.
+@end deftypevar
+
+@deftypevar {char *} rl_basic_word_break_characters
+The basic list of characters that signal a break between words for the
+completer routine. The default value of this variable is the characters
+which break words for completion in Bash, i.e.,
+@code{" \t\n\"\\'`@@$><=;|&@{("}.
+@end deftypevar
+
+@deftypevar {char *} rl_basic_quote_characters
+List of quote characters which can cause a word break.
+@end deftypevar
+
+@deftypevar {char *} rl_completer_word_break_characters
+The list of characters that signal a break between words for
+@code{rl_complete_internal ()}. The default list is the value of
+@code{rl_basic_word_break_characters}.
+@end deftypevar
+
+@deftypevar {char *} rl_completer_quote_characters
+List of characters which can be used to quote a substring of the line.
+Completion occurs on the entire substring, and within the substring
+@code{rl_completer_word_break_characters} are treated as any other character,
+unless they also appear within this list.
+@end deftypevar
+
+@deftypevar {char *} rl_filename_quote_characters
+A list of characters that cause a filename to be quoted by the completer
+when they appear in a completed filename. The default is empty.
+@end deftypevar
+
+@deftypevar {char *} rl_special_prefixes
+The list of characters that are word break characters, but should be
+left in @var{text} when it is passed to the completion function.
+Programs can use this to help determine what kind of completing to do.
+For instance, Bash sets this variable to "$@@" so that it can complete
+shell variables and hostnames.
+@end deftypevar
+
+@deftypevar {int} rl_completion_append_character
+When a single completion alternative matches at the end of the command
+line, this character is appended to the inserted completion text. The
+default is a space character (@samp{ }). Setting this to the null
+character (@samp{\0}) prevents anything being appended automatically.
+This can be changed in custom completion functions to
+provide the ``most sensible word separator character'' according to
+an application-specific command line syntax specification.
+@end deftypevar
+
+@deftypevar int rl_ignore_completion_duplicates
+If non-zero, then disallow duplicates in the matches. Default is 1.
+@end deftypevar
+
+@deftypevar int rl_filename_completion_desired
+Non-zero means that the results of the matches are to be treated as
+filenames. This is @emph{always} zero on entry, and can only be changed
+within a completion entry generator function. If it is set to a non-zero
+value, directory names have a slash appended and Readline attempts to
+quote completed filenames if they contain any embedded word break
+characters.
+@end deftypevar
+
+@deftypevar int rl_filename_quoting_desired
+Non-zero means that the results of the matches are to be quoted using
+double quotes (or an application-specific quoting mechanism) if the
+completed filename contains any characters in
+@code{rl_filename_quote_chars}. This is @emph{always} non-zero
+on entry, and can only be changed within a completion entry generator
+function. The quoting is effected via a call to the function pointed to
+by @code{rl_filename_quoting_function}.
+@end deftypevar
+
+@deftypevar int rl_inhibit_completion
+If this variable is non-zero, completion is inhibited. The completion
+character will be inserted as any other bound to @code{self-insert}.
+@end deftypevar
+
+@deftypevar {Function *} rl_ignore_some_completions_function
+This function, if defined, is called by the completer when real filename
+completion is done, after all the matching names have been generated.
+It is passed a @code{NULL} terminated array of matches.
+The first element (@code{matches[0]}) is the
+maximal substring common to all matches. This function can
+re-arrange the list of matches as required, but each element deleted
+from the array must be freed.
+@end deftypevar
+
+@deftypevar {Function *} rl_directory_completion_hook
+This function, if defined, is allowed to modify the directory portion
+of filenames Readline completes. It is called with the address of a
+string (the current directory name) as an argument. It could be used
+to expand symbolic links or shell variables in pathnames.
+@end deftypevar
+
+@node A Short Completion Example
+@subsection A Short Completion Example
+
+Here is a small application demonstrating the use of the GNU Readline
+library. It is called @code{fileman}, and the source code resides in
+@file{examples/fileman.c}. This sample application provides
+completion of command names, line editing features, and access to the
+history list.
+
+@page
+@smallexample
+/* fileman.c -- A tiny application which demonstrates how to use the
+ GNU Readline library. This application interactively allows users
+ to manipulate files and their modes. */
+
+#include <stdio.h>
+#include <sys/types.h>
+#include <sys/file.h>
+#include <sys/stat.h>
+#include <sys/errno.h>
+
+#include <readline/readline.h>
+#include <readline/history.h>
+
+extern char *getwd ();
+extern char *xmalloc ();
+
+/* The names of functions that actually do the manipulation. */
+int com_list (), com_view (), com_rename (), com_stat (), com_pwd ();
+int com_delete (), com_help (), com_cd (), com_quit ();
+
+/* A structure which contains information on the commands this program
+ can understand. */
+
+typedef struct @{
+ char *name; /* User printable name of the function. */
+ Function *func; /* Function to call to do the job. */
+ char *doc; /* Documentation for this function. */
+@} COMMAND;
+
+COMMAND commands[] = @{
+ @{ "cd", com_cd, "Change to directory DIR" @},
+ @{ "delete", com_delete, "Delete FILE" @},
+ @{ "help", com_help, "Display this text" @},
+ @{ "?", com_help, "Synonym for `help'" @},
+ @{ "list", com_list, "List files in DIR" @},
+ @{ "ls", com_list, "Synonym for `list'" @},
+ @{ "pwd", com_pwd, "Print the current working directory" @},
+ @{ "quit", com_quit, "Quit using Fileman" @},
+ @{ "rename", com_rename, "Rename FILE to NEWNAME" @},
+ @{ "stat", com_stat, "Print out statistics on FILE" @},
+ @{ "view", com_view, "View the contents of FILE" @},
+ @{ (char *)NULL, (Function *)NULL, (char *)NULL @}
+@};
+
+/* Forward declarations. */
+char *stripwhite ();
+COMMAND *find_command ();
+
+/* The name of this program, as taken from argv[0]. */
+char *progname;
+
+/* When non-zero, this global means the user is done using this program. */
+int done;
+
+char *
+dupstr (s)
+ int s;
+@{
+ char *r;
+
+ r = xmalloc (strlen (s) + 1);
+ strcpy (r, s);
+ return (r);
+@}
+
+main (argc, argv)
+ int argc;
+ char **argv;
+@{
+ char *line, *s;
+
+ progname = argv[0];
+
+ initialize_readline (); /* Bind our completer. */
+
+ /* Loop reading and executing lines until the user quits. */
+ for ( ; done == 0; )
+ @{
+ line = readline ("FileMan: ");
+
+ if (!line)
+ break;
+
+ /* Remove leading and trailing whitespace from the line.
+ Then, if there is anything left, add it to the history list
+ and execute it. */
+ s = stripwhite (line);
+
+ if (*s)
+ @{
+ add_history (s);
+ execute_line (s);
+ @}
+
+ free (line);
+ @}
+ exit (0);
+@}
+
+/* Execute a command line. */
+int
+execute_line (line)
+ char *line;
+@{
+ register int i;
+ COMMAND *command;
+ char *word;
+
+ /* Isolate the command word. */
+ i = 0;
+ while (line[i] && whitespace (line[i]))
+ i++;
+ word = line + i;
+
+ while (line[i] && !whitespace (line[i]))
+ i++;
+
+ if (line[i])
+ line[i++] = '\0';
+
+ command = find_command (word);
+
+ if (!command)
+ @{
+ fprintf (stderr, "%s: No such command for FileMan.\n", word);
+ return (-1);
+ @}
+
+ /* Get argument to command, if any. */
+ while (whitespace (line[i]))
+ i++;
+
+ word = line + i;
+
+ /* Call the function. */
+ return ((*(command->func)) (word));
+@}
+
+/* Look up NAME as the name of a command, and return a pointer to that
+ command. Return a NULL pointer if NAME isn't a command name. */
+COMMAND *
+find_command (name)
+ char *name;
+@{
+ register int i;
+
+ for (i = 0; commands[i].name; i++)
+ if (strcmp (name, commands[i].name) == 0)
+ return (&commands[i]);
+
+ return ((COMMAND *)NULL);
+@}
+
+/* Strip whitespace from the start and end of STRING. Return a pointer
+ into STRING. */
+char *
+stripwhite (string)
+ char *string;
+@{
+ register char *s, *t;
+
+ for (s = string; whitespace (*s); s++)
+ ;
+
+ if (*s == 0)
+ return (s);
+
+ t = s + strlen (s) - 1;
+ while (t > s && whitespace (*t))
+ t--;
+ *++t = '\0';
+
+ return s;
+@}
+
+/* **************************************************************** */
+/* */
+/* Interface to Readline Completion */
+/* */
+/* **************************************************************** */
+
+char *command_generator ();
+char **fileman_completion ();
+
+/* Tell the GNU Readline library how to complete. We want to try to complete
+ on command names if this is the first word in the line, or on filenames
+ if not. */
+initialize_readline ()
+@{
+ /* Allow conditional parsing of the ~/.inputrc file. */
+ rl_readline_name = "FileMan";
+
+ /* Tell the completer that we want a crack first. */
+ rl_attempted_completion_function = (CPPFunction *)fileman_completion;
+@}
+
+/* Attempt to complete on the contents of TEXT. START and END bound the
+ region of rl_line_buffer that contains the word to complete. TEXT is
+ the word to complete. We can use the entire contents of rl_line_buffer
+ in case we want to do some simple parsing. Return the array of matches,
+ or NULL if there aren't any. */
+char **
+fileman_completion (text, start, end)
+ char *text;
+ int start, end;
+@{
+ char **matches;
+
+ matches = (char **)NULL;
+
+ /* If this word is at the start of the line, then it is a command
+ to complete. Otherwise it is the name of a file in the current
+ directory. */
+ if (start == 0)
+ matches = completion_matches (text, command_generator);
+
+ return (matches);
+@}
+
+/* Generator function for command completion. STATE lets us know whether
+ to start from scratch; without any state (i.e. STATE == 0), then we
+ start at the top of the list. */
+char *
+command_generator (text, state)
+ char *text;
+ int state;
+@{
+ static int list_index, len;
+ char *name;
+
+ /* If this is a new word to complete, initialize now. This includes
+ saving the length of TEXT for efficiency, and initializing the index
+ variable to 0. */
+ if (!state)
+ @{
+ list_index = 0;
+ len = strlen (text);
+ @}
+
+ /* Return the next name which partially matches from the command list. */
+ while (name = commands[list_index].name)
+ @{
+ list_index++;
+
+ if (strncmp (name, text, len) == 0)
+ return (dupstr(name));
+ @}
+
+ /* If no names matched, then return NULL. */
+ return ((char *)NULL);
+@}
+
+/* **************************************************************** */
+/* */
+/* FileMan Commands */
+/* */
+/* **************************************************************** */
+
+/* String to pass to system (). This is for the LIST, VIEW and RENAME
+ commands. */
+static char syscom[1024];
+
+/* List the file(s) named in arg. */
+com_list (arg)
+ char *arg;
+@{
+ if (!arg)
+ arg = "";
+
+ sprintf (syscom, "ls -FClg %s", arg);
+ return (system (syscom));
+@}
+
+com_view (arg)
+ char *arg;
+@{
+ if (!valid_argument ("view", arg))
+ return 1;
+
+ sprintf (syscom, "more %s", arg);
+ return (system (syscom));
+@}
+
+com_rename (arg)
+ char *arg;
+@{
+ too_dangerous ("rename");
+ return (1);
+@}
+
+com_stat (arg)
+ char *arg;
+@{
+ struct stat finfo;
+
+ if (!valid_argument ("stat", arg))
+ return (1);
+
+ if (stat (arg, &finfo) == -1)
+ @{
+ perror (arg);
+ return (1);
+ @}
+
+ printf ("Statistics for `%s':\n", arg);
+
+ printf ("%s has %d link%s, and is %d byte%s in length.\n", arg,
+ finfo.st_nlink,
+ (finfo.st_nlink == 1) ? "" : "s",
+ finfo.st_size,
+ (finfo.st_size == 1) ? "" : "s");
+ printf ("Inode Last Change at: %s", ctime (&finfo.st_ctime));
+ printf (" Last access at: %s", ctime (&finfo.st_atime));
+ printf (" Last modified at: %s", ctime (&finfo.st_mtime));
+ return (0);
+@}
+
+com_delete (arg)
+ char *arg;
+@{
+ too_dangerous ("delete");
+ return (1);
+@}
+
+/* Print out help for ARG, or for all of the commands if ARG is
+ not present. */
+com_help (arg)
+ char *arg;
+@{
+ register int i;
+ int printed = 0;
+
+ for (i = 0; commands[i].name; i++)
+ @{
+ if (!*arg || (strcmp (arg, commands[i].name) == 0))
+ @{
+ printf ("%s\t\t%s.\n", commands[i].name, commands[i].doc);
+ printed++;
+ @}
+ @}
+
+ if (!printed)
+ @{
+ printf ("No commands match `%s'. Possibilties are:\n", arg);
+
+ for (i = 0; commands[i].name; i++)
+ @{
+ /* Print in six columns. */
+ if (printed == 6)
+ @{
+ printed = 0;
+ printf ("\n");
+ @}
+
+ printf ("%s\t", commands[i].name);
+ printed++;
+ @}
+
+ if (printed)
+ printf ("\n");
+ @}
+ return (0);
+@}
+
+/* Change to the directory ARG. */
+com_cd (arg)
+ char *arg;
+@{
+ if (chdir (arg) == -1)
+ @{
+ perror (arg);
+ return 1;
+ @}
+
+ com_pwd ("");
+ return (0);
+@}
+
+/* Print out the current working directory. */
+com_pwd (ignore)
+ char *ignore;
+@{
+ char dir[1024], *s;
+
+ s = getwd (dir);
+ if (s == 0)
+ @{
+ printf ("Error getting pwd: %s\n", dir);
+ return 1;
+ @}
+
+ printf ("Current directory is %s\n", dir);
+ return 0;
+@}
+
+/* The user wishes to quit using this program. Just set DONE non-zero. */
+com_quit (arg)
+ char *arg;
+@{
+ done = 1;
+ return (0);
+@}
+
+/* Function which tells you that you can't do this. */
+too_dangerous (caller)
+ char *caller;
+@{
+ fprintf (stderr,
+ "%s: Too dangerous for me to distribute. Write it yourself.\n",
+ caller);
+@}
+
+/* Return non-zero if ARG is a valid argument for CALLER, else print
+ an error message and return zero. */
+int
+valid_argument (caller, arg)
+ char *caller, *arg;
+@{
+ if (!arg || !*arg)
+ @{
+ fprintf (stderr, "%s: Argument required.\n", caller);
+ return (0);
+ @}
+
+ return (1);
+@}
+@end smallexample
diff --git a/contrib/libreadline/doc/rluser.texinfo b/contrib/libreadline/doc/rluser.texinfo
new file mode 100644
index 0000000..65111f3
--- /dev/null
+++ b/contrib/libreadline/doc/rluser.texinfo
@@ -0,0 +1,1166 @@
+@comment %**start of header (This is for running Texinfo on a region.)
+@setfilename rluser.info
+@comment %**end of header (This is for running Texinfo on a region.)
+@setchapternewpage odd
+
+@ignore
+This file documents the end user interface to the GNU command line
+editing features. It is to be an appendix to manuals for programs which
+use these features. There is a document entitled "readline.texinfo"
+which contains both end-user and programmer documentation for the GNU
+Readline Library.
+
+Copyright (C) 1988, 1991, 1993, 1996 Free Software Foundation, Inc.
+
+Authored by Brian Fox and Chet Ramey.
+
+Permission is granted to process this file through Tex and print the
+results, provided the printed document carries copying permission notice
+identical to this one except for the removal of this paragraph (this
+paragraph not being relevant to the printed manual).
+
+Permission is granted to make and distribute verbatim copies of this manual
+provided the copyright notice and this permission notice are preserved on
+all copies.
+
+Permission is granted to copy and distribute modified versions of this
+manual under the conditions for verbatim copying, provided also that the
+GNU Copyright statement is available to the distributee, and provided that
+the entire resulting derived work is distributed under the terms of a
+permission notice identical to this one.
+
+Permission is granted to copy and distribute translations of this manual
+into another language, under the above conditions for modified versions.
+@end ignore
+
+@comment If you are including this manual as an appendix, then set the
+@comment variable readline-appendix.
+
+@node Command Line Editing
+@chapter Command Line Editing
+
+This chapter describes the basic features of the @sc{GNU}
+command line editing interface.
+
+@menu
+* Introduction and Notation:: Notation used in this text.
+* Readline Interaction:: The minimum set of commands for editing a line.
+* Readline Init File:: Customizing Readline from a user's view.
+* Bindable Readline Commands:: A description of most of the Readline commands
+ available for binding
+* Readline vi Mode:: A short description of how to make Readline
+ behave like the vi editor.
+@end menu
+
+@node Introduction and Notation
+@section Introduction to Line Editing
+
+The following paragraphs describe the notation used to represent
+keystrokes.
+
+The text @key{C-k} is read as `Control-K' and describes the character
+produced when the @key{k} key is pressed while the Control key
+is depressed.
+
+The text @key{M-k} is read as `Meta-K' and describes the character
+produced when the meta key (if you have one) is depressed, and the @key{k}
+key is pressed. If you do not have a meta key, the identical keystroke
+can be generated by typing @key{ESC} @i{first}, and then typing @key{k}.
+Either process is known as @dfn{metafying} the @key{k} key.
+
+The text @key{M-C-k} is read as `Meta-Control-k' and describes the
+character produced by @dfn{metafying} @key{C-k}.
+
+In addition, several keys have their own names. Specifically,
+@key{DEL}, @key{ESC}, @key{LFD}, @key{SPC}, @key{RET}, and @key{TAB} all
+stand for themselves when seen in this text, or in an init file
+(@pxref{Readline Init File}).
+
+@node Readline Interaction
+@section Readline Interaction
+@cindex interaction, readline
+
+Often during an interactive session you type in a long line of text,
+only to notice that the first word on the line is misspelled. The
+Readline library gives you a set of commands for manipulating the text
+as you type it in, allowing you to just fix your typo, and not forcing
+you to retype the majority of the line. Using these editing commands,
+you move the cursor to the place that needs correction, and delete or
+insert the text of the corrections. Then, when you are satisfied with
+the line, you simply press @key{RETURN}. You do not have to be at the
+end of the line to press @key{RETURN}; the entire line is accepted
+regardless of the location of the cursor within the line.
+
+@menu
+* Readline Bare Essentials:: The least you need to know about Readline.
+* Readline Movement Commands:: Moving about the input line.
+* Readline Killing Commands:: How to delete text, and how to get it back!
+* Readline Arguments:: Giving numeric arguments to commands.
+* Searching:: Searching through previous lines.
+ @end menu
+
+@node Readline Bare Essentials
+@subsection Readline Bare Essentials
+@cindex notation, readline
+@cindex command editing
+@cindex editing command lines
+
+In order to enter characters into the line, simply type them. The typed
+character appears where the cursor was, and then the cursor moves one
+space to the right. If you mistype a character, you can use your
+erase character to back up and delete the mistyped character.
+
+Sometimes you may miss typing a character that you wanted to type, and
+not notice your error until you have typed several other characters. In
+that case, you can type @key{C-b} to move the cursor to the left, and then
+correct your mistake. Afterwards, you can move the cursor to the right
+with @key{C-f}.
+
+When you add text in the middle of a line, you will notice that characters
+to the right of the cursor are `pushed over' to make room for the text
+that you have inserted. Likewise, when you delete text behind the cursor,
+characters to the right of the cursor are `pulled back' to fill in the
+blank space created by the removal of the text. A list of the basic bare
+essentials for editing the text of an input line follows.
+
+@table @asis
+@item @key{C-b}
+Move back one character.
+@item @key{C-f}
+Move forward one character.
+@item @key{DEL}
+Delete the character to the left of the cursor.
+@item @key{C-d}
+Delete the character underneath the cursor.
+@item @w{Printing characters}
+Insert the character into the line at the cursor.
+@item @key{C-_}
+Undo the last thing that you did. You can undo all the way back to an
+empty line.
+@end table
+
+@node Readline Movement Commands
+@subsection Readline Movement Commands
+
+
+The above table describes the most basic possible keystrokes that you need
+in order to do editing of the input line. For your convenience, many
+other commands have been added in addition to @key{C-b}, @key{C-f},
+@key{C-d}, and @key{DEL}. Here are some commands for moving more rapidly
+about the line.
+
+@table @key
+@item C-a
+Move to the start of the line.
+@item C-e
+Move to the end of the line.
+@item M-f
+Move forward a word.
+@item M-b
+Move backward a word.
+@item C-l
+Clear the screen, reprinting the current line at the top.
+@end table
+
+Notice how @key{C-f} moves forward a character, while @key{M-f} moves
+forward a word. It is a loose convention that control keystrokes
+operate on characters while meta keystrokes operate on words.
+
+@node Readline Killing Commands
+@subsection Readline Killing Commands
+
+@cindex killing text
+@cindex yanking text
+
+@dfn{Killing} text means to delete the text from the line, but to save
+it away for later use, usually by @dfn{yanking} (re-inserting)
+it back into the line.
+If the description for a command says that it `kills' text, then you can
+be sure that you can get the text back in a different (or the same)
+place later.
+
+When you use a kill command, the text is saved in a @dfn{kill-ring}.
+Any number of consecutive kills save all of the killed text together, so
+that when you yank it back, you get it all. The kill
+ring is not line specific; the text that you killed on a previously
+typed line is available to be yanked back later, when you are typing
+another line.
+@cindex kill ring
+
+Here is the list of commands for killing text.
+
+@table @key
+@item C-k
+Kill the text from the current cursor position to the end of the line.
+
+@item M-d
+Kill from the cursor to the end of the current word, or if between
+words, to the end of the next word.
+
+@item M-DEL
+Kill from the cursor the start of the previous word, or if between
+words, to the start of the previous word.
+
+@item C-w
+Kill from the cursor to the previous whitespace. This is different than
+@key{M-DEL} because the word boundaries differ.
+
+@end table
+
+And, here is how to @dfn{yank} the text back into the line. Yanking
+means to copy the most-recently-killed text from the kill buffer.
+
+@table @key
+@item C-y
+Yank the most recently killed text back into the buffer at the cursor.
+
+@item M-y
+Rotate the kill-ring, and yank the new top. You can only do this if
+the prior command is @key{C-y} or @key{M-y}.
+@end table
+
+@node Readline Arguments
+@subsection Readline Arguments
+
+You can pass numeric arguments to Readline commands. Sometimes the
+argument acts as a repeat count, other times it is the @i{sign} of the
+argument that is significant. If you pass a negative argument to a
+command which normally acts in a forward direction, that command will
+act in a backward direction. For example, to kill text back to the
+start of the line, you might type @w{@kbd{M-- C-k}}.
+
+The general way to pass numeric arguments to a command is to type meta
+digits before the command. If the first `digit' you type is a minus
+sign (@key{-}), then the sign of the argument will be negative. Once
+you have typed one meta digit to get the argument started, you can type
+the remainder of the digits, and then the command. For example, to give
+the @key{C-d} command an argument of 10, you could type @samp{M-1 0 C-d}.
+
+@node Searching
+@subsection Searching for Commands in the History
+
+Readline provides commands for searching through the command history
+@ifset BashFeatures
+(@pxref{Bash History Facilities})
+@end ifset
+for lines containing a specified string.
+There are two search modes: @var{incremental} and @var{non-incremental}.
+
+Incremental searches begin before the user has finished typing the
+search string.
+As each character of the search string is typed, readline displays
+the next entry from the history matching the string typed so far.
+An incremental search requires only as many characters as needed to
+find the desired history entry.
+The Escape character is used to terminate an incremental search.
+Control-J will also terminate the search.
+Control-G will abort an incremental search and restore the original
+line.
+When the search is terminated, the history entry containing the
+search string becomes the current line.
+To find other matching entries in the history list, type Control-S or
+Control-R as appropriate.
+This will search backward or forward in the history for the next
+entry matching the search string typed so far.
+Any other key sequence bound to a readline command will terminate
+the search and execute that command.
+For instance, a @code{newline} will terminate the search and accept
+the line, thereby executing the command from the history list.
+
+Non-incremental searches read the entire search string before starting
+to search for matching history lines. The search string may be
+typed by the user or part of the contents of the current line.
+
+@node Readline Init File
+@section Readline Init File
+@cindex initialization file, readline
+
+Although the Readline library comes with a set of @code{emacs}-like
+keybindings installed by default,
+it is possible that you would like to use a different set
+of keybindings. You can customize programs that use Readline by putting
+commands in an @dfn{inputrc} file in your home directory. The name of this
+@ifset BashFeatures
+file is taken from the value of the shell variable @code{INPUTRC}. If
+@end ifset
+@ifclear BashFeatures
+file is taken from the value of the environment variable @code{INPUTRC}. If
+@end ifclear
+that variable is unset, the default is @file{~/.inputrc}.
+
+When a program which uses the Readline library starts up, the
+init file is read, and the key bindings are set.
+
+In addition, the @code{C-x C-r} command re-reads this init file, thus
+incorporating any changes that you might have made to it.
+
+@menu
+* Readline Init File Syntax:: Syntax for the commands in the inputrc file.
+
+* Conditional Init Constructs:: Conditional key bindings in the inputrc file.
+
+* Sample Init File:: An example inputrc file.
+@end menu
+
+@node Readline Init File Syntax
+@subsection Readline Init File Syntax
+
+There are only a few basic constructs allowed in the
+Readline init file. Blank lines are ignored.
+Lines beginning with a @samp{#} are comments.
+Lines beginning with a @samp{$} indicate conditional
+constructs (@pxref{Conditional Init Constructs}). Other lines
+denote variable settings and key bindings.
+
+@table @asis
+@item Variable Settings
+You can change the state of a few variables in Readline by
+using the @code{set} command within the init file. Here is how you
+would specify that you wish to use @code{vi} line editing commands:
+
+@example
+set editing-mode vi
+@end example
+
+Right now, there are only a few variables which can be set;
+so few, in fact, that we just list them here:
+
+@table @code
+
+@item bell-style
+@vindex bell-style
+Controls what happens when Readline wants to ring the terminal bell.
+If set to @samp{none}, Readline never rings the bell. If set to
+@samp{visible}, Readline uses a visible bell if one is available.
+If set to @samp{audible} (the default), Readline attempts to ring
+the terminal's bell.
+
+@item comment-begin
+@vindex comment-begin
+The string to insert at the beginning of the line when the
+@code{insert-comment} command is executed. The default value
+is @code{"#"}.
+
+@item completion-query-items
+@vindex completion-query-items
+The number of possible completions that determines when the user is
+asked whether he wants to see the list of possibilities. If the
+number of possible completions is greater than this value,
+Readline will ask the user whether or not he wishes to view
+them; otherwise, they are simply listed. The default limit is
+@code{100}.
+
+@item convert-meta
+@vindex convert-meta
+If set to @samp{on}, Readline will convert characters with the
+eigth bit set to an ASCII key sequence by stripping the eigth
+bit and prepending an @key{ESC} character, converting them to a
+meta-prefixed key sequence. The default value is @samp{on}.
+
+@item disable-completion
+@vindex disable-completion
+If set to @samp{On}, readline will inhibit word completion.
+Completion characters will be inserted into the line as if they had
+been mapped to @code{self-insert}. The default is @samp{off}.
+
+@item editing-mode
+@vindex editing-mode
+The @code{editing-mode} variable controls which editing mode you are
+using. By default, Readline starts up in Emacs editing mode, where
+the keystrokes are most similar to Emacs. This variable can be
+set to either @samp{emacs} or @samp{vi}.
+
+@item enable-keypad
+@vindex enable-keypad
+When set to @samp{on}, readline will try to enable the application
+keypad when it is called. Some systems need this to enable the
+arrow keys. The default is @samp{off}.
+
+@item expand-tilde
+@vindex expand-tilde
+If set to @samp{on}, tilde expansion is performed when Readline
+attempts word completion. The default is @samp{off}.
+
+@item horizontal-scroll-mode
+@vindex horizontal-scroll-mode
+This variable can be set to either @samp{on} or @samp{off}. Setting it
+to @samp{on} means that the text of the lines that you edit will scroll
+horizontally on a single screen line when they are longer than the width
+of the screen, instead of wrapping onto a new screen line. By default,
+this variable is set to @samp{off}.
+
+@item keymap
+@vindex keymap
+Sets Readline's idea of the current keymap for key binding commands.
+Acceptable @code{keymap} names are
+@code{emacs},
+@code{emacs-standard},
+@code{emacs-meta},
+@code{emacs-ctlx},
+@code{vi},
+@code{vi-command}, and
+@code{vi-insert}.
+@code{vi} is equivalent to @code{vi-command}; @code{emacs} is
+equivalent to @code{emacs-standard}. The default value is @code{emacs}.
+The value of the @code{editing-mode} variable also affects the
+default keymap.
+
+@item mark-directories
+If set to @samp{on}, completed directory names have a slash
+appended. The default is @samp{on}.
+
+@item mark-modified-lines
+@vindex mark-modified-lines
+This variable, when set to @samp{on}, says to display an asterisk
+(@samp{*}) at the start of history lines which have been modified.
+This variable is @samp{off} by default.
+
+@item input-meta
+@vindex input-meta
+@vindex meta-flag
+If set to @samp{on}, Readline will enable eight-bit input (it
+will not strip the eighth bit from the characters it reads),
+regardless of what the terminal claims it can support. The
+default value is @samp{off}. The name @code{meta-flag} is a
+synonym for this variable.
+
+@item output-meta
+@vindex output-meta
+If set to @samp{on}, Readline will display characters with the
+eighth bit set directly rather than as a meta-prefixed escape
+sequence. The default is @samp{off}.
+
+@item show-all-if-ambiguous
+@vindex show-all-if-ambiguous
+This alters the default behavior of the completion functions. If
+set to @samp{on},
+words which have more than one possible completion cause the
+matches to be listed immediately instead of ringing the bell.
+The default value is @samp{off}.
+
+@item visible-stats
+@vindex visible-stats
+If set to @samp{on}, a character denoting a file's type
+is appended to the filename when listing possible
+completions. The default is @samp{off}.
+
+@end table
+
+@item Key Bindings
+The syntax for controlling key bindings in the init file is
+simple. First you have to know the name of the command that you
+want to change. The following pages contain tables of the command name,
+the default keybinding, and a short description of what the command
+does.
+
+Once you know the name of the command, simply place the name of the key
+you wish to bind the command to, a colon, and then the name of the
+command on a line in the init file. The name of the key
+can be expressed in different ways, depending on which is most
+comfortable for you.
+
+@table @asis
+@item @w{@var{keyname}: @var{function-name} or @var{macro}}
+@var{keyname} is the name of a key spelled out in English. For example:
+@example
+Control-u: universal-argument
+Meta-Rubout: backward-kill-word
+Control-o: "> output"
+@end example
+
+In the above example, @samp{C-u} is bound to the function
+@code{universal-argument}, and @samp{C-o} is bound to run the macro
+expressed on the right hand side (that is, to insert the text
+@samp{> output} into the line).
+
+@item @w{"@var{keyseq}": @var{function-name} or @var{macro}}
+@var{keyseq} differs from @var{keyname} above in that strings
+denoting an entire key sequence can be specified, by placing
+the key sequence in double quotes. Some GNU Emacs style key
+escapes can be used, as in the following example, but the
+special character names are not recognized.
+
+@example
+"\C-u": universal-argument
+"\C-x\C-r": re-read-init-file
+"\e[11~": "Function Key 1"
+@end example
+
+In the above example, @samp{C-u} is bound to the function
+@code{universal-argument} (just as it was in the first example),
+@samp{C-x C-r} is bound to the function @code{re-read-init-file}, and
+@samp{ESC [ 1 1 ~} is bound to insert the text @samp{Function Key 1}.
+The following escape sequences are available when specifying key
+sequences:
+
+@table @code
+@item @kbd{\C-}
+control prefix
+@item @kbd{\M-}
+meta prefix
+@item @kbd{\e}
+an escape character
+@item @kbd{\\}
+backslash
+@item @kbd{\"}
+@key{"}
+@item @kbd{\'}
+@key{'}
+@end table
+
+When entering the text of a macro, single or double quotes should
+be used to indicate a macro definition. Unquoted text
+is assumed to be a function name. Backslash
+will quote any character in the macro text, including @samp{"}
+and @samp{'}.
+For example, the following binding will make @samp{C-x \}
+insert a single @samp{\} into the line:
+@example
+"\C-x\\": "\\"
+@end example
+
+@end table
+@end table
+
+@node Conditional Init Constructs
+@subsection Conditional Init Constructs
+
+Readline implements a facility similar in spirit to the conditional
+compilation features of the C preprocessor which allows key
+bindings and variable settings to be performed as the result
+of tests. There are three parser directives used.
+
+@table @code
+@item $if
+The @code{$if} construct allows bindings to be made based on the
+editing mode, the terminal being used, or the application using
+Readline. The text of the test extends to the end of the line;
+no characters are required to isolate it.
+
+@table @code
+@item mode
+The @code{mode=} form of the @code{$if} directive is used to test
+whether Readline is in @code{emacs} or @code{vi} mode.
+This may be used in conjunction
+with the @samp{set keymap} command, for instance, to set bindings in
+the @code{emacs-standard} and @code{emacs-ctlx} keymaps only if
+Readline is starting out in @code{emacs} mode.
+
+@item term
+The @code{term=} form may be used to include terminal-specific
+key bindings, perhaps to bind the key sequences output by the
+terminal's function keys. The word on the right side of the
+@samp{=} is tested against the full name of the terminal and the
+portion of the terminal name before the first @samp{-}. This
+allows @code{sun} to match both @code{sun} and @code{sun-cmd},
+for instance.
+
+@item application
+The @var{application} construct is used to include
+application-specific settings. Each program using the Readline
+library sets the @var{application name}, and you can test for it.
+This could be used to bind key sequences to functions useful for
+a specific program. For instance, the following command adds a
+key sequence that quotes the current or previous word in Bash:
+@example
+$if Bash
+# Quote the current or previous word
+"\C-xq": "\eb\"\ef\""
+$endif
+@end example
+@end table
+
+@item $endif
+This command, as you saw in the previous example, terminates an
+@code{$if} command.
+
+@item $else
+Commands in this branch of the @code{$if} directive are executed if
+the test fails.
+@end table
+
+@node Sample Init File
+@subsection Sample Init File
+
+Here is an example of an inputrc file. This illustrates key
+binding, variable assignment, and conditional syntax.
+
+@example
+@page
+# This file controls the behaviour of line input editing for
+# programs that use the Gnu Readline library. Existing programs
+# include FTP, Bash, and Gdb.
+#
+# You can re-read the inputrc file with C-x C-r.
+# Lines beginning with '#' are comments.
+#
+# Set various bindings for emacs mode.
+
+set editing-mode emacs
+
+$if mode=emacs
+
+Meta-Control-h: backward-kill-word Text after the function name is ignored
+
+#
+# Arrow keys in keypad mode
+#
+#"\M-OD" backward-char
+#"\M-OC" forward-char
+#"\M-OA" previous-history
+#"\M-OB" next-history
+#
+# Arrow keys in ANSI mode
+#
+"\M-[D" backward-char
+"\M-[C" forward-char
+"\M-[A" previous-history
+"\M-[B" next-history
+#
+# Arrow keys in 8 bit keypad mode
+#
+#"\M-\C-OD" backward-char
+#"\M-\C-OC" forward-char
+#"\M-\C-OA" previous-history
+#"\M-\C-OB" next-history
+#
+# Arrow keys in 8 bit ANSI mode
+#
+#"\M-\C-[D" backward-char
+#"\M-\C-[C" forward-char
+#"\M-\C-[A" previous-history
+#"\M-\C-[B" next-history
+
+C-q: quoted-insert
+
+$endif
+
+# An old-style binding. This happens to be the default.
+TAB: complete
+
+# Macros that are convenient for shell interaction
+$if Bash
+# edit the path
+"\C-xp": "PATH=$@{PATH@}\e\C-e\C-a\ef\C-f"
+# prepare to type a quoted word -- insert open and close double quotes
+# and move to just after the open quote
+"\C-x\"": "\"\"\C-b"
+# insert a backslash (testing backslash escapes in sequences and macros)
+"\C-x\\": "\\"
+# Quote the current or previous word
+"\C-xq": "\eb\"\ef\""
+# Add a binding to refresh the line, which is unbound
+"\C-xr": redraw-current-line
+# Edit variable on current line.
+"\M-\C-v": "\C-a\C-k$\C-y\M-\C-e\C-a\C-y="
+$endif
+
+# use a visible bell if one is available
+set bell-style visible
+
+# don't strip characters to 7 bits when reading
+set input-meta on
+
+# allow iso-latin1 characters to be inserted rather than converted to
+# prefix-meta sequences
+set convert-meta off
+
+# display characters with the eighth bit set directly rather than
+# as meta-prefixed characters
+set output-meta on
+
+# if there are more than 150 possible completions for a word, ask the
+# user if he wants to see all of them
+set completion-query-items 150
+
+# For FTP
+$if Ftp
+"\C-xg": "get \M-?"
+"\C-xt": "put \M-?"
+"\M-.": yank-last-arg
+$endif
+@end example
+
+@node Bindable Readline Commands
+@section Bindable Readline Commands
+
+@menu
+* Commands For Moving:: Moving about the line.
+* Commands For History:: Getting at previous lines.
+* Commands For Text:: Commands for changing text.
+* Commands For Killing:: Commands for killing and yanking.
+* Numeric Arguments:: Specifying numeric arguments, repeat counts.
+* Commands For Completion:: Getting Readline to do the typing for you.
+* Keyboard Macros:: Saving and re-executing typed characters
+* Miscellaneous Commands:: Other miscellaneous commands.
+@end menu
+
+This section describes Readline commands that may be bound to key
+sequences.
+
+@node Commands For Moving
+@subsection Commands For Moving
+@ftable @code
+@item beginning-of-line (C-a)
+Move to the start of the current line.
+
+@item end-of-line (C-e)
+Move to the end of the line.
+
+@item forward-char (C-f)
+Move forward a character.
+
+@item backward-char (C-b)
+Move back a character.
+
+@item forward-word (M-f)
+Move forward to the end of the next word. Words are composed of
+letters and digits.
+
+@item backward-word (M-b)
+Move back to the start of this, or the previous, word. Words are
+composed of letters and digits.
+
+@item clear-screen (C-l)
+Clear the screen and redraw the current line,
+leaving the current line at the top of the screen.
+
+@item redraw-current-line ()
+Refresh the current line. By default, this is unbound.
+
+@end ftable
+
+@node Commands For History
+@subsection Commands For Manipulating The History
+
+@ftable @code
+@item accept-line (Newline, Return)
+@ifset BashFeatures
+Accept the line regardless of where the cursor is. If this line is
+non-empty, add it to the history list according to the setting of
+the @code{HISTCONTROL} variable. If this line was a history
+line, then restore the history line to its original state.
+@end ifset
+@ifclear BashFeatures
+Accept the line regardless of where the cursor is. If this line is
+non-empty, add it to the history list. If this line was a history
+line, then restore the history line to its original state.
+@end ifclear
+
+@item previous-history (C-p)
+Move `up' through the history list.
+
+@item next-history (C-n)
+Move `down' through the history list.
+
+@item beginning-of-history (M-<)
+Move to the first line in the history.
+
+@item end-of-history (M->)
+Move to the end of the input history, i.e., the line you are entering.
+
+@item reverse-search-history (C-r)
+Search backward starting at the current line and moving `up' through
+the history as necessary. This is an incremental search.
+
+@item forward-search-history (C-s)
+Search forward starting at the current line and moving `down' through
+the the history as necessary. This is an incremental search.
+
+@item non-incremental-reverse-search-history (M-p)
+Search backward starting at the current line and moving `up'
+through the history as necessary using a non-incremental search
+for a string supplied by the user.
+
+@item non-incremental-forward-search-history (M-n)
+Search forward starting at the current line and moving `down'
+through the the history as necessary using a non-incremental search
+for a string supplied by the user.
+
+@item history-search-forward ()
+Search forward through the history for the string of characters
+between the start of the current line and the current cursor
+position (the `point'). This is a non-incremental search. By
+default, this command is unbound.
+
+@item history-search-backward ()
+Search backward through the history for the string of characters
+between the start of the current line and the point. This
+is a non-incremental search. By default, this command is unbound.
+
+@item yank-nth-arg (M-C-y)
+Insert the first argument to the previous command (usually
+the second word on the previous line). With an argument @var{n},
+insert the @var{n}th word from the previous command (the words
+in the previous command begin with word 0). A negative argument
+inserts the @var{n}th word from the end of the previous command.
+
+@item yank-last-arg (M-., M-_)
+Insert last argument to the previous command (the last word of the
+previous history entry). With an
+argument, behave exactly like @code{yank-nth-arg}.
+
+@end ftable
+
+@node Commands For Text
+@subsection Commands For Changing Text
+
+@ftable @code
+@item delete-char (C-d)
+Delete the character under the cursor. If the cursor is at the
+beginning of the line, there are no characters in the line, and
+the last character typed was not @kbd{C-d}, then return @code{EOF}.
+
+@item backward-delete-char (Rubout)
+Delete the character behind the cursor. A numeric arg says to kill
+the characters instead of deleting them.
+
+@item quoted-insert (C-q, C-v)
+Add the next character that you type to the line verbatim. This is
+how to insert key sequences like @key{C-q}, for example.
+
+@item tab-insert (M-TAB)
+Insert a tab character.
+
+@item self-insert (a, b, A, 1, !, ...)
+Insert yourself.
+
+@item transpose-chars (C-t)
+Drag the character before the cursor forward over
+the character at the cursor, moving the
+cursor forward as well. If the insertion point
+is at the end of the line, then this
+transposes the last two characters of the line.
+Negative argumentss don't work.
+
+@item transpose-words (M-t)
+Drag the word behind the cursor past the word in front of the cursor
+moving the cursor over that word as well.
+
+@item upcase-word (M-u)
+Uppercase the current (or following) word. With a negative argument,
+do the previous word, but do not move the cursor.
+
+@item downcase-word (M-l)
+Lowercase the current (or following) word. With a negative argument,
+do the previous word, but do not move the cursor.
+
+@item capitalize-word (M-c)
+Capitalize the current (or following) word. With a negative argument,
+do the previous word, but do not move the cursor.
+
+@end ftable
+
+@node Commands For Killing
+@subsection Killing And Yanking
+
+@ftable @code
+
+@item kill-line (C-k)
+Kill the text from the current cursor position to the end of the line.
+
+@item backward-kill-line (C-x Rubout)
+Kill backward to the beginning of the line.
+
+@item unix-line-discard (C-u)
+Kill backward from the cursor to the beginning of the current line.
+Save the killed text on the kill-ring.
+
+@item kill-whole-line ()
+Kill all characters on the current line, no matter where the
+cursor is. By default, this is unbound.
+
+@item kill-word (M-d)
+Kill from the cursor to the end of the current word, or if between
+words, to the end of the next word. Word boundaries are the same
+as @code{forward-word}.
+
+@item backward-kill-word (M-DEL)
+Kill the word behind the cursor. Word boundaries are the same
+as @code{backward-word}.
+
+@item unix-word-rubout (C-w)
+Kill the word behind the cursor, using white space as a word
+boundary. The killed text is saved on the kill-ring.
+
+@item delete-horizontal-space ()
+Delete all spaces and tabs around point. By default, this is unbound.
+
+@item kill-region ()
+Kill the text between the point and the @emph{mark} (saved
+cursor position. This text is referred to as the @var{region}.
+By default, this command is unbound.
+
+@item copy-region-as-kill ()
+Copy the text in the region to the kill buffer, so you can yank it
+right away. By default, this command is unbound.
+
+@item copy-backward-word ()
+Copy the word before point to the kill buffer.
+By default, this command is unbound.
+
+@item copy-forward-word ()
+Copy the word following point to the kill buffer.
+By default, this command is unbound.
+
+@item yank (C-y)
+Yank the top of the kill ring into the buffer at the current
+cursor position.
+
+@item yank-pop (M-y)
+Rotate the kill-ring, and yank the new top. You can only do this if
+the prior command is yank or yank-pop.
+@end ftable
+
+@node Numeric Arguments
+@subsection Specifying Numeric Arguments
+@ftable @code
+
+@item digit-argument (M-0, M-1, ... M--)
+Add this digit to the argument already accumulating, or start a new
+argument. @key{M--} starts a negative argument.
+
+@item universal-argument ()
+Each time this is executed, the argument count is multiplied by four.
+The argument count is initially one, so executing this function the
+first time makes the argument count four. By default, this is not
+bound to a key.
+@end ftable
+
+@node Commands For Completion
+@subsection Letting Readline Type For You
+
+@ftable @code
+@item complete (TAB)
+Attempt to do completion on the text before the cursor. This is
+application-specific. Generally, if you are typing a filename
+argument, you can do filename completion; if you are typing a command,
+you can do command completion, if you are typing in a symbol to GDB, you
+can do symbol name completion, if you are typing in a variable to Bash,
+you can do variable name completion, and so on.
+@ifset BashFeatures
+Bash attempts completion treating the text as a variable (if the
+text begins with @samp{$}), username (if the text begins with
+@samp{~}), hostname (if the text begins with @samp{@@}), or
+command (including aliases and functions) in turn. If none
+of these produces a match, filename completion is attempted.
+@end ifset
+
+@item possible-completions (M-?)
+List the possible completions of the text before the cursor.
+
+@item insert-completions (M-*)
+Insert all completions of the text before point that would have
+been generated by @code{possible-completions}.
+
+@ifset BashFeatures
+@item complete-filename (M-/)
+Attempt filename completion on the text before point.
+
+@item possible-filename-completions (C-x /)
+List the possible completions of the text before point,
+treating it as a filename.
+
+@item complete-username (M-~)
+Attempt completion on the text before point, treating
+it as a username.
+
+@item possible-username-completions (C-x ~)
+List the possible completions of the text before point,
+treating it as a username.
+
+@item complete-variable (M-$)
+Attempt completion on the text before point, treating
+it as a shell variable.
+
+@item possible-variable-completions (C-x $)
+List the possible completions of the text before point,
+treating it as a shell variable.
+
+@item complete-hostname (M-@@)
+Attempt completion on the text before point, treating
+it as a hostname.
+
+@item possible-hostname-completions (C-x @@)
+List the possible completions of the text before point,
+treating it as a hostname.
+
+@item complete-command (M-!)
+Attempt completion on the text before point, treating
+it as a command name. Command completion attempts to
+match the text against aliases, reserved words, shell
+functions, builtins, and finally executable filenames,
+in that order.
+
+@item possible-command-completions (C-x !)
+List the possible completions of the text before point,
+treating it as a command name.
+
+@item dynamic-complete-history (M-TAB)
+Attempt completion on the text before point, comparing
+the text against lines from the history list for possible
+completion matches.
+
+@item complete-into-braces (M-@{)
+Perform filename completion and return the list of possible completions
+enclosed within braces so the list is available to the shell
+(@pxref{Brace Expansion}).
+
+@end ifset
+@end ftable
+
+@node Keyboard Macros
+@subsection Keyboard Macros
+@ftable @code
+
+@item start-kbd-macro (C-x ()
+Begin saving the characters typed into the current keyboard macro.
+
+@item end-kbd-macro (C-x ))
+Stop saving the characters typed into the current keyboard macro
+and save the definition.
+
+@item call-last-kbd-macro (C-x e)
+Re-execute the last keyboard macro defined, by making the characters
+in the macro appear as if typed at the keyboard.
+
+@end ftable
+
+@node Miscellaneous Commands
+@subsection Some Miscellaneous Commands
+@ftable @code
+
+@item re-read-init-file (C-x C-r)
+Read in the contents of the inputrc file, and incorporate
+any bindings or variable assignments found there.
+
+@item abort (C-g)
+Abort the current editing command and
+ring the terminal's bell (subject to the setting of
+@code{bell-style}).
+
+@item do-uppercase-version (M-a, M-b, M-@var{x}, @dots{})
+If the metafied character @var{x} is lowercase, run the command
+that is bound to the corresponding uppercase character.
+
+@item prefix-meta (ESC)
+Make the next character that you type be metafied. This is for people
+without a meta key. Typing @samp{ESC f} is equivalent to typing
+@samp{M-f}.
+
+@item undo (C-_, C-x C-u)
+Incremental undo, separately remembered for each line.
+
+@item revert-line (M-r)
+Undo all changes made to this line. This is like typing the @code{undo}
+command enough times to get back to the beginning.
+
+@item tilde-expand (M-~)
+Perform tilde expansion on the current word.
+
+@item set-mark (C-@@)
+Set the mark to the current point. If a
+numeric argument is supplied, the mark is set to that position.
+
+@item exchange-point-and-mark (C-x C-x)
+Swap the point with the mark. The current cursor position is set to
+the saved position, and the old cursor position is saved as the mark.
+
+@item character-search (C-])
+A character is read and point is moved to the next occurrence of that
+character. A negative count searches for previous occurrences.
+
+@item character-search-backward (M-C-])
+A character is read and point is moved to the previous occurrence
+of that character. A negative count searches for subsequent
+occurrences.
+
+@item insert-comment (M-#)
+The value of the @code{comment-begin}
+variable is inserted at the beginning of the current line,
+and the line is accepted as if a newline had been typed.
+@ifset BashFeatures
+This makes the current line a shell comment.
+@end ifset
+
+@item dump-functions ()
+Print all of the functions and their key bindings to the
+readline output stream. If a numeric argument is supplied,
+the output is formatted in such a way that it can be made part
+of an @var{inputrc} file. This command is unbound by default.
+
+@item dump-variables ()
+Print all of the settable variables and their values to the
+readline output stream. If a numeric argument is supplied,
+the output is formatted in such a way that it can be made part
+of an @var{inputrc} file. This command is unbound by default.
+
+@item dump-macros ()
+Print all of the readline key sequences bound to macros and the
+strings they ouput. If a numeric argument is supplied,
+the output is formatted in such a way that it can be made part
+of an @var{inputrc} file. This command is unbound by default.
+
+@ifset BashFeatures
+@item glob-expand-word (C-x *)
+The word before point is treated as a pattern for pathname expansion,
+and the list of matching file names is inserted, replacing the word.
+
+@item glob-list-expansions (C-x g)
+The list of expansions that would have been generated by
+@code{glob-expand-word}
+is inserted into the line, replacing the word before point.
+
+@item display-shell-version (C-x C-v)
+Display version information about the current instance of Bash.
+
+@item shell-expand-line (M-C-e)
+Expand the line the way the shell does when it reads it. This
+performs alias and history expansion as well as all of the shell
+word expansions.
+
+@item history-expand-line (M-^)
+Perform history expansion on the current line.
+
+@item insert-last-argument (M-., M-_)
+A synonym for @code{yank-last-arg}.
+
+@item operate-and-get-next (C-o)
+Accept the current line for execution and fetch the next line
+relative to the current line from the history for editing. Any
+argument is ignored.
+
+@item emacs-editing-mode (C-e)
+When in @code{vi} editing mode, this causes a switch back to
+@code{emacs} editing mode, as if the command @samp{set -o emacs} had
+been executed.
+
+@end ifset
+
+@end ftable
+
+@node Readline vi Mode
+@section Readline vi Mode
+
+While the Readline library does not have a full set of @code{vi}
+editing functions, it does contain enough to allow simple editing
+of the line. The Readline @code{vi} mode behaves as specified in
+the @sc{POSIX} 1003.2 standard.
+
+@ifset BashFeatures
+In order to switch interactively between @code{emacs} and @code{vi}
+editing modes, use the @samp{set -o emacs} and @samp{set -o vi}
+commands (@pxref{The Set Builtin}).
+@end ifset
+@ifclear BashFeatures
+In order to switch interactively between @code{emacs} and @code{vi}
+editing modes, use the command M-C-j (toggle-editing-mode).
+@end ifclear
+The Readline default is @code{emacs} mode.
+
+When you enter a line in @code{vi} mode, you are already placed in
+`insertion' mode, as if you had typed an @samp{i}. Pressing @key{ESC}
+switches you into `command' mode, where you can edit the text of the
+line with the standard @code{vi} movement keys, move to previous
+history lines with @samp{k} and subsequent lines with @samp{j}, and
+so forth.
diff --git a/contrib/libreadline/emacs_keymap.c b/contrib/libreadline/emacs_keymap.c
new file mode 100644
index 0000000..4ba3858
--- /dev/null
+++ b/contrib/libreadline/emacs_keymap.c
@@ -0,0 +1,885 @@
+/* emacs_keymap.c -- the keymap for emacs_mode in readline (). */
+
+/* Copyright (C) 1987, 1989, 1992 Free Software Foundation, Inc.
+
+ This file is part of the GNU Readline Library, a library for
+ reading lines of text with interactive input and history editing.
+
+ The GNU Readline Library is free software; you can redistribute it
+ and/or modify it under the terms of the GNU General Public License
+ as published by the Free Software Foundation; either version 1, or
+ (at your option) any later version.
+
+ The GNU Readline Library is distributed in the hope that it will be
+ useful, but WITHOUT ANY WARRANTY; without even the implied warranty
+ of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ The GNU General Public License is often shipped with GNU software, and
+ is generally kept in a file called COPYING or LICENSE. If you do not
+ have a copy of the license, write to the Free Software Foundation,
+ 675 Mass Ave, Cambridge, MA 02139, USA. */
+
+#if !defined (BUFSIZ)
+#include <stdio.h>
+#endif /* !BUFSIZ */
+
+#include "readline.h"
+
+/* An array of function pointers, one for each possible key.
+ If the type byte is ISKMAP, then the pointer is the address of
+ a keymap. */
+
+KEYMAP_ENTRY_ARRAY emacs_standard_keymap = {
+
+ /* Control keys. */
+ { ISFUNC, rl_set_mark }, /* Control-@ */
+ { ISFUNC, rl_beg_of_line }, /* Control-a */
+ { ISFUNC, rl_backward }, /* Control-b */
+ { ISFUNC, (Function *)0x0 }, /* Control-c */
+ { ISFUNC, rl_delete }, /* Control-d */
+ { ISFUNC, rl_end_of_line }, /* Control-e */
+ { ISFUNC, rl_forward }, /* Control-f */
+ { ISFUNC, rl_abort }, /* Control-g */
+ { ISFUNC, rl_rubout }, /* Control-h */
+ { ISFUNC, rl_complete }, /* Control-i */
+ { ISFUNC, rl_newline }, /* Control-j */
+ { ISFUNC, rl_kill_line }, /* Control-k */
+ { ISFUNC, rl_clear_screen }, /* Control-l */
+ { ISFUNC, rl_newline }, /* Control-m */
+ { ISFUNC, rl_get_next_history }, /* Control-n */
+ { ISFUNC, (Function *)0x0 }, /* Control-o */
+ { ISFUNC, rl_get_previous_history }, /* Control-p */
+ { ISFUNC, rl_quoted_insert }, /* Control-q */
+ { ISFUNC, rl_reverse_search_history }, /* Control-r */
+ { ISFUNC, rl_forward_search_history }, /* Control-s */
+ { ISFUNC, rl_transpose_chars }, /* Control-t */
+ { ISFUNC, rl_unix_line_discard }, /* Control-u */
+ { ISFUNC, rl_quoted_insert }, /* Control-v */
+ { ISFUNC, rl_unix_word_rubout }, /* Control-w */
+ { ISKMAP, (Function *)emacs_ctlx_keymap }, /* Control-x */
+ { ISFUNC, rl_yank }, /* Control-y */
+ { ISFUNC, (Function *)0x0 }, /* Control-z */
+ { ISKMAP, (Function *)emacs_meta_keymap }, /* Control-[ */
+ { ISFUNC, (Function *)0x0 }, /* Control-\ */
+ { ISFUNC, rl_char_search }, /* Control-] */
+ { ISFUNC, (Function *)0x0 }, /* Control-^ */
+ { ISFUNC, rl_undo_command }, /* Control-_ */
+
+ /* The start of printing characters. */
+ { ISFUNC, rl_insert }, /* SPACE */
+ { ISFUNC, rl_insert }, /* ! */
+ { ISFUNC, rl_insert }, /* " */
+ { ISFUNC, rl_insert }, /* # */
+ { ISFUNC, rl_insert }, /* $ */
+ { ISFUNC, rl_insert }, /* % */
+ { ISFUNC, rl_insert }, /* & */
+ { ISFUNC, rl_insert }, /* ' */
+ { ISFUNC, rl_insert }, /* ( */
+#if defined (PAREN_MATCHING)
+ { ISFUNC, rl_insert_close }, /* ) */
+#else
+ { ISFUNC, rl_insert }, /* ) */
+#endif /* !PAREN_MATCHING */
+ { ISFUNC, rl_insert }, /* * */
+ { ISFUNC, rl_insert }, /* + */
+ { ISFUNC, rl_insert }, /* , */
+ { ISFUNC, rl_insert }, /* - */
+ { ISFUNC, rl_insert }, /* . */
+ { ISFUNC, rl_insert }, /* / */
+
+ /* Regular digits. */
+ { ISFUNC, rl_insert }, /* 0 */
+ { ISFUNC, rl_insert }, /* 1 */
+ { ISFUNC, rl_insert }, /* 2 */
+ { ISFUNC, rl_insert }, /* 3 */
+ { ISFUNC, rl_insert }, /* 4 */
+ { ISFUNC, rl_insert }, /* 5 */
+ { ISFUNC, rl_insert }, /* 6 */
+ { ISFUNC, rl_insert }, /* 7 */
+ { ISFUNC, rl_insert }, /* 8 */
+ { ISFUNC, rl_insert }, /* 9 */
+
+ /* A little more punctuation. */
+ { ISFUNC, rl_insert }, /* : */
+ { ISFUNC, rl_insert }, /* ; */
+ { ISFUNC, rl_insert }, /* < */
+ { ISFUNC, rl_insert }, /* = */
+ { ISFUNC, rl_insert }, /* > */
+ { ISFUNC, rl_insert }, /* ? */
+ { ISFUNC, rl_insert }, /* @ */
+
+ /* Uppercase alphabet. */
+ { ISFUNC, rl_insert }, /* A */
+ { ISFUNC, rl_insert }, /* B */
+ { ISFUNC, rl_insert }, /* C */
+ { ISFUNC, rl_insert }, /* D */
+ { ISFUNC, rl_insert }, /* E */
+ { ISFUNC, rl_insert }, /* F */
+ { ISFUNC, rl_insert }, /* G */
+ { ISFUNC, rl_insert }, /* H */
+ { ISFUNC, rl_insert }, /* I */
+ { ISFUNC, rl_insert }, /* J */
+ { ISFUNC, rl_insert }, /* K */
+ { ISFUNC, rl_insert }, /* L */
+ { ISFUNC, rl_insert }, /* M */
+ { ISFUNC, rl_insert }, /* N */
+ { ISFUNC, rl_insert }, /* O */
+ { ISFUNC, rl_insert }, /* P */
+ { ISFUNC, rl_insert }, /* Q */
+ { ISFUNC, rl_insert }, /* R */
+ { ISFUNC, rl_insert }, /* S */
+ { ISFUNC, rl_insert }, /* T */
+ { ISFUNC, rl_insert }, /* U */
+ { ISFUNC, rl_insert }, /* V */
+ { ISFUNC, rl_insert }, /* W */
+ { ISFUNC, rl_insert }, /* X */
+ { ISFUNC, rl_insert }, /* Y */
+ { ISFUNC, rl_insert }, /* Z */
+
+ /* Some more punctuation. */
+ { ISFUNC, rl_insert }, /* [ */
+ { ISFUNC, rl_insert }, /* \ */
+#if defined (PAREN_MATCHING)
+ { ISFUNC, rl_insert_close }, /* ] */
+#else
+ { ISFUNC, rl_insert }, /* ] */
+#endif /* !PAREN_MATCHING */
+ { ISFUNC, rl_insert }, /* ^ */
+ { ISFUNC, rl_insert }, /* _ */
+ { ISFUNC, rl_insert }, /* ` */
+
+ /* Lowercase alphabet. */
+ { ISFUNC, rl_insert }, /* a */
+ { ISFUNC, rl_insert }, /* b */
+ { ISFUNC, rl_insert }, /* c */
+ { ISFUNC, rl_insert }, /* d */
+ { ISFUNC, rl_insert }, /* e */
+ { ISFUNC, rl_insert }, /* f */
+ { ISFUNC, rl_insert }, /* g */
+ { ISFUNC, rl_insert }, /* h */
+ { ISFUNC, rl_insert }, /* i */
+ { ISFUNC, rl_insert }, /* j */
+ { ISFUNC, rl_insert }, /* k */
+ { ISFUNC, rl_insert }, /* l */
+ { ISFUNC, rl_insert }, /* m */
+ { ISFUNC, rl_insert }, /* n */
+ { ISFUNC, rl_insert }, /* o */
+ { ISFUNC, rl_insert }, /* p */
+ { ISFUNC, rl_insert }, /* q */
+ { ISFUNC, rl_insert }, /* r */
+ { ISFUNC, rl_insert }, /* s */
+ { ISFUNC, rl_insert }, /* t */
+ { ISFUNC, rl_insert }, /* u */
+ { ISFUNC, rl_insert }, /* v */
+ { ISFUNC, rl_insert }, /* w */
+ { ISFUNC, rl_insert }, /* x */
+ { ISFUNC, rl_insert }, /* y */
+ { ISFUNC, rl_insert }, /* z */
+
+ /* Final punctuation. */
+ { ISFUNC, rl_insert }, /* { */
+ { ISFUNC, rl_insert }, /* | */
+#if defined (PAREN_MATCHING)
+ { ISFUNC, rl_insert_close }, /* } */
+#else
+ { ISFUNC, rl_insert }, /* } */
+#endif /* !PAREN_MATCHING */
+ { ISFUNC, rl_insert }, /* ~ */
+ { ISFUNC, rl_rubout }, /* RUBOUT */
+
+#if KEYMAP_SIZE > 128
+ /* Pure 8-bit characters (128 - 159).
+ These might be used in some
+ character sets. */
+ { ISFUNC, rl_insert }, /* ? */
+ { ISFUNC, rl_insert }, /* ? */
+ { ISFUNC, rl_insert }, /* ? */
+ { ISFUNC, rl_insert }, /* ? */
+ { ISFUNC, rl_insert }, /* ? */
+ { ISFUNC, rl_insert }, /* ? */
+ { ISFUNC, rl_insert }, /* ? */
+ { ISFUNC, rl_insert }, /* ? */
+ { ISFUNC, rl_insert }, /* ? */
+ { ISFUNC, rl_insert }, /* ? */
+ { ISFUNC, rl_insert }, /* ? */
+ { ISFUNC, rl_insert }, /* ? */
+ { ISFUNC, rl_insert }, /* ? */
+ { ISFUNC, rl_insert }, /* ? */
+ { ISFUNC, rl_insert }, /* ? */
+ { ISFUNC, rl_insert }, /* ? */
+ { ISFUNC, rl_insert }, /* ? */
+ { ISFUNC, rl_insert }, /* ? */
+ { ISFUNC, rl_insert }, /* ? */
+ { ISFUNC, rl_insert }, /* ? */
+ { ISFUNC, rl_insert }, /* ? */
+ { ISFUNC, rl_insert }, /* ? */
+ { ISFUNC, rl_insert }, /* ? */
+ { ISFUNC, rl_insert }, /* ? */
+ { ISFUNC, rl_insert }, /* ? */
+ { ISFUNC, rl_insert }, /* ? */
+ { ISFUNC, rl_insert }, /* ? */
+ { ISFUNC, rl_insert }, /* ? */
+ { ISFUNC, rl_insert }, /* ? */
+ { ISFUNC, rl_insert }, /* ? */
+ { ISFUNC, rl_insert }, /* ? */
+ { ISFUNC, rl_insert }, /* ? */
+
+ /* ISO Latin-1 characters (160 - 255) */
+ { ISFUNC, rl_insert }, /* No-break space */
+ { ISFUNC, rl_insert }, /* Inverted exclamation mark */
+ { ISFUNC, rl_insert }, /* Cent sign */
+ { ISFUNC, rl_insert }, /* Pound sign */
+ { ISFUNC, rl_insert }, /* Currency sign */
+ { ISFUNC, rl_insert }, /* Yen sign */
+ { ISFUNC, rl_insert }, /* Broken bar */
+ { ISFUNC, rl_insert }, /* Section sign */
+ { ISFUNC, rl_insert }, /* Diaeresis */
+ { ISFUNC, rl_insert }, /* Copyright sign */
+ { ISFUNC, rl_insert }, /* Feminine ordinal indicator */
+ { ISFUNC, rl_insert }, /* Left pointing double angle quotation mark */
+ { ISFUNC, rl_insert }, /* Not sign */
+ { ISFUNC, rl_insert }, /* Soft hyphen */
+ { ISFUNC, rl_insert }, /* Registered sign */
+ { ISFUNC, rl_insert }, /* Macron */
+ { ISFUNC, rl_insert }, /* Degree sign */
+ { ISFUNC, rl_insert }, /* Plus-minus sign */
+ { ISFUNC, rl_insert }, /* Superscript two */
+ { ISFUNC, rl_insert }, /* Superscript three */
+ { ISFUNC, rl_insert }, /* Acute accent */
+ { ISFUNC, rl_insert }, /* Micro sign */
+ { ISFUNC, rl_insert }, /* Pilcrow sign */
+ { ISFUNC, rl_insert }, /* Middle dot */
+ { ISFUNC, rl_insert }, /* Cedilla */
+ { ISFUNC, rl_insert }, /* Superscript one */
+ { ISFUNC, rl_insert }, /* Masculine ordinal indicator */
+ { ISFUNC, rl_insert }, /* Right pointing double angle quotation mark */
+ { ISFUNC, rl_insert }, /* Vulgar fraction one quarter */
+ { ISFUNC, rl_insert }, /* Vulgar fraction one half */
+ { ISFUNC, rl_insert }, /* Vulgar fraction three quarters */
+ { ISFUNC, rl_insert }, /* Inverted questionk mark */
+ { ISFUNC, rl_insert }, /* Latin capital letter a with grave */
+ { ISFUNC, rl_insert }, /* Latin capital letter a with acute */
+ { ISFUNC, rl_insert }, /* Latin capital letter a with circumflex */
+ { ISFUNC, rl_insert }, /* Latin capital letter a with tilde */
+ { ISFUNC, rl_insert }, /* Latin capital letter a with diaeresis */
+ { ISFUNC, rl_insert }, /* Latin capital letter a with ring above */
+ { ISFUNC, rl_insert }, /* Latin capital letter ae */
+ { ISFUNC, rl_insert }, /* Latin capital letter c with cedilla */
+ { ISFUNC, rl_insert }, /* Latin capital letter e with grave */
+ { ISFUNC, rl_insert }, /* Latin capital letter e with acute */
+ { ISFUNC, rl_insert }, /* Latin capital letter e with circumflex */
+ { ISFUNC, rl_insert }, /* Latin capital letter e with diaeresis */
+ { ISFUNC, rl_insert }, /* Latin capital letter i with grave */
+ { ISFUNC, rl_insert }, /* Latin capital letter i with acute */
+ { ISFUNC, rl_insert }, /* Latin capital letter i with circumflex */
+ { ISFUNC, rl_insert }, /* Latin capital letter i with diaeresis */
+ { ISFUNC, rl_insert }, /* Latin capital letter eth (Icelandic) */
+ { ISFUNC, rl_insert }, /* Latin capital letter n with tilde */
+ { ISFUNC, rl_insert }, /* Latin capital letter o with grave */
+ { ISFUNC, rl_insert }, /* Latin capital letter o with acute */
+ { ISFUNC, rl_insert }, /* Latin capital letter o with circumflex */
+ { ISFUNC, rl_insert }, /* Latin capital letter o with tilde */
+ { ISFUNC, rl_insert }, /* Latin capital letter o with diaeresis */
+ { ISFUNC, rl_insert }, /* Multiplication sign */
+ { ISFUNC, rl_insert }, /* Latin capital letter o with stroke */
+ { ISFUNC, rl_insert }, /* Latin capital letter u with grave */
+ { ISFUNC, rl_insert }, /* Latin capital letter u with acute */
+ { ISFUNC, rl_insert }, /* Latin capital letter u with circumflex */
+ { ISFUNC, rl_insert }, /* Latin capital letter u with diaeresis */
+ { ISFUNC, rl_insert }, /* Latin capital letter Y with acute */
+ { ISFUNC, rl_insert }, /* Latin capital letter thorn (Icelandic) */
+ { ISFUNC, rl_insert }, /* Latin small letter sharp s (German) */
+ { ISFUNC, rl_insert }, /* Latin small letter a with grave */
+ { ISFUNC, rl_insert }, /* Latin small letter a with acute */
+ { ISFUNC, rl_insert }, /* Latin small letter a with circumflex */
+ { ISFUNC, rl_insert }, /* Latin small letter a with tilde */
+ { ISFUNC, rl_insert }, /* Latin small letter a with diaeresis */
+ { ISFUNC, rl_insert }, /* Latin small letter a with ring above */
+ { ISFUNC, rl_insert }, /* Latin small letter ae */
+ { ISFUNC, rl_insert }, /* Latin small letter c with cedilla */
+ { ISFUNC, rl_insert }, /* Latin small letter e with grave */
+ { ISFUNC, rl_insert }, /* Latin small letter e with acute */
+ { ISFUNC, rl_insert }, /* Latin small letter e with circumflex */
+ { ISFUNC, rl_insert }, /* Latin small letter e with diaeresis */
+ { ISFUNC, rl_insert }, /* Latin small letter i with grave */
+ { ISFUNC, rl_insert }, /* Latin small letter i with acute */
+ { ISFUNC, rl_insert }, /* Latin small letter i with circumflex */
+ { ISFUNC, rl_insert }, /* Latin small letter i with diaeresis */
+ { ISFUNC, rl_insert }, /* Latin small letter eth (Icelandic) */
+ { ISFUNC, rl_insert }, /* Latin small letter n with tilde */
+ { ISFUNC, rl_insert }, /* Latin small letter o with grave */
+ { ISFUNC, rl_insert }, /* Latin small letter o with acute */
+ { ISFUNC, rl_insert }, /* Latin small letter o with circumflex */
+ { ISFUNC, rl_insert }, /* Latin small letter o with tilde */
+ { ISFUNC, rl_insert }, /* Latin small letter o with diaeresis */
+ { ISFUNC, rl_insert }, /* Division sign */
+ { ISFUNC, rl_insert }, /* Latin small letter o with stroke */
+ { ISFUNC, rl_insert }, /* Latin small letter u with grave */
+ { ISFUNC, rl_insert }, /* Latin small letter u with acute */
+ { ISFUNC, rl_insert }, /* Latin small letter u with circumflex */
+ { ISFUNC, rl_insert }, /* Latin small letter u with diaeresis */
+ { ISFUNC, rl_insert }, /* Latin small letter y with acute */
+ { ISFUNC, rl_insert }, /* Latin small letter thorn (Icelandic) */
+ { ISFUNC, rl_insert } /* Latin small letter y with diaeresis */
+#endif /* KEYMAP_SIZE > 128 */
+};
+
+KEYMAP_ENTRY_ARRAY emacs_meta_keymap = {
+
+ /* Meta keys. Just like above, but the high bit is set. */
+ { ISFUNC, (Function *)0x0 }, /* Meta-Control-@ */
+ { ISFUNC, (Function *)0x0 }, /* Meta-Control-a */
+ { ISFUNC, (Function *)0x0 }, /* Meta-Control-b */
+ { ISFUNC, (Function *)0x0 }, /* Meta-Control-c */
+ { ISFUNC, (Function *)0x0 }, /* Meta-Control-d */
+ { ISFUNC, (Function *)0x0 }, /* Meta-Control-e */
+ { ISFUNC, (Function *)0x0 }, /* Meta-Control-f */
+ { ISFUNC, rl_abort }, /* Meta-Control-g */
+ { ISFUNC, rl_backward_kill_word }, /* Meta-Control-h */
+ { ISFUNC, rl_tab_insert }, /* Meta-Control-i */
+ { ISFUNC, rl_vi_editing_mode }, /* Meta-Control-j */
+ { ISFUNC, (Function *)0x0 }, /* Meta-Control-k */
+ { ISFUNC, (Function *)0x0 }, /* Meta-Control-l */
+ { ISFUNC, rl_vi_editing_mode }, /* Meta-Control-m */
+ { ISFUNC, (Function *)0x0 }, /* Meta-Control-n */
+ { ISFUNC, (Function *)0x0 }, /* Meta-Control-o */
+ { ISFUNC, (Function *)0x0 }, /* Meta-Control-p */
+ { ISFUNC, (Function *)0x0 }, /* Meta-Control-q */
+ { ISFUNC, rl_revert_line }, /* Meta-Control-r */
+ { ISFUNC, (Function *)0x0 }, /* Meta-Control-s */
+ { ISFUNC, (Function *)0x0 }, /* Meta-Control-t */
+ { ISFUNC, (Function *)0x0 }, /* Meta-Control-u */
+ { ISFUNC, (Function *)0x0 }, /* Meta-Control-v */
+ { ISFUNC, (Function *)0x0 }, /* Meta-Control-w */
+ { ISFUNC, (Function *)0x0 }, /* Meta-Control-x */
+ { ISFUNC, rl_yank_nth_arg }, /* Meta-Control-y */
+ { ISFUNC, (Function *)0x0 }, /* Meta-Control-z */
+
+ { ISFUNC, rl_complete }, /* Meta-Control-[ */
+ { ISFUNC, (Function *)0x0 }, /* Meta-Control-\ */
+ { ISFUNC, rl_backward_char_search }, /* Meta-Control-] */
+ { ISFUNC, (Function *)0x0 }, /* Meta-Control-^ */
+ { ISFUNC, (Function *)0x0 }, /* Meta-Control-_ */
+
+ /* The start of printing characters. */
+ { ISFUNC, rl_set_mark }, /* Meta-SPACE */
+ { ISFUNC, (Function *)0x0 }, /* Meta-! */
+ { ISFUNC, (Function *)0x0 }, /* Meta-" */
+ { ISFUNC, rl_insert_comment },/* Meta-# */
+ { ISFUNC, (Function *)0x0 }, /* Meta-$ */
+ { ISFUNC, (Function *)0x0 }, /* Meta-% */
+ { ISFUNC, rl_tilde_expand }, /* Meta-& */
+ { ISFUNC, (Function *)0x0 }, /* Meta-' */
+ { ISFUNC, (Function *)0x0 }, /* Meta-( */
+ { ISFUNC, (Function *)0x0 }, /* Meta-) */
+ { ISFUNC, rl_insert_completions }, /* Meta-* */
+ { ISFUNC, (Function *)0x0 }, /* Meta-+ */
+ { ISFUNC, (Function *)0x0 }, /* Meta-, */
+ { ISFUNC, rl_digit_argument }, /* Meta-- */
+ { ISFUNC, rl_yank_last_arg}, /* Meta-. */
+ { ISFUNC, (Function *)0x0 }, /* Meta-/ */
+
+ /* Regular digits. */
+ { ISFUNC, rl_digit_argument }, /* Meta-0 */
+ { ISFUNC, rl_digit_argument }, /* Meta-1 */
+ { ISFUNC, rl_digit_argument }, /* Meta-2 */
+ { ISFUNC, rl_digit_argument }, /* Meta-3 */
+ { ISFUNC, rl_digit_argument }, /* Meta-4 */
+ { ISFUNC, rl_digit_argument }, /* Meta-5 */
+ { ISFUNC, rl_digit_argument }, /* Meta-6 */
+ { ISFUNC, rl_digit_argument }, /* Meta-7 */
+ { ISFUNC, rl_digit_argument }, /* Meta-8 */
+ { ISFUNC, rl_digit_argument }, /* Meta-9 */
+
+ /* A little more punctuation. */
+ { ISFUNC, (Function *)0x0 }, /* Meta-: */
+ { ISFUNC, (Function *)0x0 }, /* Meta-; */
+ { ISFUNC, rl_beginning_of_history }, /* Meta-< */
+ { ISFUNC, rl_possible_completions }, /* Meta-= */
+ { ISFUNC, rl_end_of_history }, /* Meta-> */
+ { ISFUNC, rl_possible_completions }, /* Meta-? */
+ { ISFUNC, (Function *)0x0 }, /* Meta-@ */
+
+ /* Uppercase alphabet. */
+ { ISFUNC, rl_do_lowercase_version }, /* Meta-A */
+ { ISFUNC, rl_do_lowercase_version }, /* Meta-B */
+ { ISFUNC, rl_do_lowercase_version }, /* Meta-C */
+ { ISFUNC, rl_do_lowercase_version }, /* Meta-D */
+ { ISFUNC, rl_do_lowercase_version }, /* Meta-E */
+ { ISFUNC, rl_do_lowercase_version }, /* Meta-F */
+ { ISFUNC, rl_do_lowercase_version }, /* Meta-G */
+ { ISFUNC, rl_do_lowercase_version }, /* Meta-H */
+ { ISFUNC, rl_do_lowercase_version }, /* Meta-I */
+ { ISFUNC, rl_do_lowercase_version }, /* Meta-J */
+ { ISFUNC, rl_do_lowercase_version }, /* Meta-K */
+ { ISFUNC, rl_do_lowercase_version }, /* Meta-L */
+ { ISFUNC, rl_do_lowercase_version }, /* Meta-M */
+ { ISFUNC, rl_do_lowercase_version }, /* Meta-N */
+ { ISFUNC, rl_do_lowercase_version }, /* Meta-O */
+ { ISFUNC, rl_do_lowercase_version }, /* Meta-P */
+ { ISFUNC, rl_do_lowercase_version }, /* Meta-Q */
+ { ISFUNC, rl_do_lowercase_version }, /* Meta-R */
+ { ISFUNC, rl_do_lowercase_version }, /* Meta-S */
+ { ISFUNC, rl_do_lowercase_version }, /* Meta-T */
+ { ISFUNC, rl_do_lowercase_version }, /* Meta-U */
+ { ISFUNC, rl_do_lowercase_version }, /* Meta-V */
+ { ISFUNC, rl_do_lowercase_version }, /* Meta-W */
+ { ISFUNC, rl_do_lowercase_version }, /* Meta-X */
+ { ISFUNC, rl_do_lowercase_version }, /* Meta-Y */
+ { ISFUNC, rl_do_lowercase_version }, /* Meta-Z */
+
+ /* Some more punctuation. */
+ { ISFUNC, (Function *)0x0 }, /* Meta-[ */ /* was rl_arrow_keys */
+ { ISFUNC, rl_delete_horizontal_space }, /* Meta-\ */
+ { ISFUNC, (Function *)0x0 }, /* Meta-] */
+ { ISFUNC, (Function *)0x0 }, /* Meta-^ */
+ { ISFUNC, rl_yank_last_arg }, /* Meta-_ */
+ { ISFUNC, (Function *)0x0 }, /* Meta-` */
+
+ /* Lowercase alphabet. */
+ { ISFUNC, (Function *)0x0 }, /* Meta-a */
+ { ISFUNC, rl_backward_word }, /* Meta-b */
+ { ISFUNC, rl_capitalize_word }, /* Meta-c */
+ { ISFUNC, rl_kill_word }, /* Meta-d */
+ { ISFUNC, (Function *)0x0 }, /* Meta-e */
+ { ISFUNC, rl_forward_word }, /* Meta-f */
+ { ISFUNC, (Function *)0x0 }, /* Meta-g */
+ { ISFUNC, (Function *)0x0 }, /* Meta-h */
+ { ISFUNC, (Function *)0x0 }, /* Meta-i */
+ { ISFUNC, (Function *)0x0 }, /* Meta-j */
+ { ISFUNC, (Function *)0x0 }, /* Meta-k */
+ { ISFUNC, rl_downcase_word }, /* Meta-l */
+ { ISFUNC, (Function *)0x0 }, /* Meta-m */
+ { ISFUNC, rl_noninc_forward_search }, /* Meta-n */
+ { ISFUNC, (Function *)0x0 }, /* Meta-o */ /* was rl_arrow_keys */
+ { ISFUNC, rl_noninc_reverse_search }, /* Meta-p */
+ { ISFUNC, (Function *)0x0 }, /* Meta-q */
+ { ISFUNC, rl_revert_line }, /* Meta-r */
+ { ISFUNC, (Function *)0x0 }, /* Meta-s */
+ { ISFUNC, rl_transpose_words }, /* Meta-t */
+ { ISFUNC, rl_upcase_word }, /* Meta-u */
+ { ISFUNC, (Function *)0x0 }, /* Meta-v */
+ { ISFUNC, (Function *)0x0 }, /* Meta-w */
+ { ISFUNC, (Function *)0x0 }, /* Meta-x */
+ { ISFUNC, rl_yank_pop }, /* Meta-y */
+ { ISFUNC, (Function *)0x0 }, /* Meta-z */
+
+ /* Final punctuation. */
+ { ISFUNC, (Function *)0x0 }, /* Meta-{ */
+ { ISFUNC, (Function *)0x0 }, /* Meta-| */
+ { ISFUNC, (Function *)0x0 }, /* Meta-} */
+ { ISFUNC, rl_tilde_expand }, /* Meta-~ */
+ { ISFUNC, rl_backward_kill_word }, /* Meta-rubout */
+
+#if KEYMAP_SIZE > 128
+ /* Undefined keys. */
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 }
+#endif /* KEYMAP_SIZE > 128 */
+};
+
+KEYMAP_ENTRY_ARRAY emacs_ctlx_keymap = {
+
+ /* Control keys. */
+ { ISFUNC, (Function *)0x0 }, /* Control-@ */
+ { ISFUNC, (Function *)0x0 }, /* Control-a */
+ { ISFUNC, (Function *)0x0 }, /* Control-b */
+ { ISFUNC, (Function *)0x0 }, /* Control-c */
+ { ISFUNC, (Function *)0x0 }, /* Control-d */
+ { ISFUNC, (Function *)0x0 }, /* Control-e */
+ { ISFUNC, (Function *)0x0 }, /* Control-f */
+ { ISFUNC, rl_abort }, /* Control-g */
+ { ISFUNC, (Function *)0x0 }, /* Control-h */
+ { ISFUNC, (Function *)0x0 }, /* Control-i */
+ { ISFUNC, (Function *)0x0 }, /* Control-j */
+ { ISFUNC, (Function *)0x0 }, /* Control-k */
+ { ISFUNC, (Function *)0x0 }, /* Control-l */
+ { ISFUNC, (Function *)0x0 }, /* Control-m */
+ { ISFUNC, (Function *)0x0 }, /* Control-n */
+ { ISFUNC, (Function *)0x0 }, /* Control-o */
+ { ISFUNC, (Function *)0x0 }, /* Control-p */
+ { ISFUNC, (Function *)0x0 }, /* Control-q */
+ { ISFUNC, rl_re_read_init_file }, /* Control-r */
+ { ISFUNC, (Function *)0x0 }, /* Control-s */
+ { ISFUNC, (Function *)0x0 }, /* Control-t */
+ { ISFUNC, rl_undo_command }, /* Control-u */
+ { ISFUNC, (Function *)0x0 }, /* Control-v */
+ { ISFUNC, (Function *)0x0 }, /* Control-w */
+ { ISFUNC, rl_exchange_point_and_mark },/* Control-x */
+ { ISFUNC, (Function *)0x0 }, /* Control-y */
+ { ISFUNC, (Function *)0x0 }, /* Control-z */
+ { ISFUNC, (Function *)0x0 }, /* Control-[ */
+ { ISFUNC, (Function *)0x0 }, /* Control-\ */
+ { ISFUNC, (Function *)0x0 }, /* Control-] */
+ { ISFUNC, (Function *)0x0 }, /* Control-^ */
+ { ISFUNC, (Function *)0x0 }, /* Control-_ */
+
+ /* The start of printing characters. */
+ { ISFUNC, (Function *)0x0 }, /* SPACE */
+ { ISFUNC, (Function *)0x0 }, /* ! */
+ { ISFUNC, (Function *)0x0 }, /* " */
+ { ISFUNC, (Function *)0x0 }, /* # */
+ { ISFUNC, (Function *)0x0 }, /* $ */
+ { ISFUNC, (Function *)0x0 }, /* % */
+ { ISFUNC, (Function *)0x0 }, /* & */
+ { ISFUNC, (Function *)0x0 }, /* ' */
+ { ISFUNC, rl_start_kbd_macro }, /* ( */
+ { ISFUNC, rl_end_kbd_macro }, /* ) */
+ { ISFUNC, (Function *)0x0 }, /* * */
+ { ISFUNC, (Function *)0x0 }, /* + */
+ { ISFUNC, (Function *)0x0 }, /* , */
+ { ISFUNC, (Function *)0x0 }, /* - */
+ { ISFUNC, (Function *)0x0 }, /* . */
+ { ISFUNC, (Function *)0x0 }, /* / */
+
+ /* Regular digits. */
+ { ISFUNC, (Function *)0x0 }, /* 0 */
+ { ISFUNC, (Function *)0x0 }, /* 1 */
+ { ISFUNC, (Function *)0x0 }, /* 2 */
+ { ISFUNC, (Function *)0x0 }, /* 3 */
+ { ISFUNC, (Function *)0x0 }, /* 4 */
+ { ISFUNC, (Function *)0x0 }, /* 5 */
+ { ISFUNC, (Function *)0x0 }, /* 6 */
+ { ISFUNC, (Function *)0x0 }, /* 7 */
+ { ISFUNC, (Function *)0x0 }, /* 8 */
+ { ISFUNC, (Function *)0x0 }, /* 9 */
+
+ /* A little more punctuation. */
+ { ISFUNC, (Function *)0x0 }, /* : */
+ { ISFUNC, (Function *)0x0 }, /* ; */
+ { ISFUNC, (Function *)0x0 }, /* < */
+ { ISFUNC, (Function *)0x0 }, /* = */
+ { ISFUNC, (Function *)0x0 }, /* > */
+ { ISFUNC, (Function *)0x0 }, /* ? */
+ { ISFUNC, (Function *)0x0 }, /* @ */
+
+ /* Uppercase alphabet. */
+ { ISFUNC, rl_do_lowercase_version }, /* A */
+ { ISFUNC, rl_do_lowercase_version }, /* B */
+ { ISFUNC, rl_do_lowercase_version }, /* C */
+ { ISFUNC, rl_do_lowercase_version }, /* D */
+ { ISFUNC, rl_do_lowercase_version }, /* E */
+ { ISFUNC, rl_do_lowercase_version }, /* F */
+ { ISFUNC, rl_do_lowercase_version }, /* G */
+ { ISFUNC, rl_do_lowercase_version }, /* H */
+ { ISFUNC, rl_do_lowercase_version }, /* I */
+ { ISFUNC, rl_do_lowercase_version }, /* J */
+ { ISFUNC, rl_do_lowercase_version }, /* K */
+ { ISFUNC, rl_do_lowercase_version }, /* L */
+ { ISFUNC, rl_do_lowercase_version }, /* M */
+ { ISFUNC, rl_do_lowercase_version }, /* N */
+ { ISFUNC, rl_do_lowercase_version }, /* O */
+ { ISFUNC, rl_do_lowercase_version }, /* P */
+ { ISFUNC, rl_do_lowercase_version }, /* Q */
+ { ISFUNC, rl_do_lowercase_version }, /* R */
+ { ISFUNC, rl_do_lowercase_version }, /* S */
+ { ISFUNC, rl_do_lowercase_version }, /* T */
+ { ISFUNC, rl_do_lowercase_version }, /* U */
+ { ISFUNC, rl_do_lowercase_version }, /* V */
+ { ISFUNC, rl_do_lowercase_version }, /* W */
+ { ISFUNC, rl_do_lowercase_version }, /* X */
+ { ISFUNC, rl_do_lowercase_version }, /* Y */
+ { ISFUNC, rl_do_lowercase_version }, /* Z */
+
+ /* Some more punctuation. */
+ { ISFUNC, (Function *)0x0 }, /* [ */
+ { ISFUNC, (Function *)0x0 }, /* \ */
+ { ISFUNC, (Function *)0x0 }, /* ] */
+ { ISFUNC, (Function *)0x0 }, /* ^ */
+ { ISFUNC, (Function *)0x0 }, /* _ */
+ { ISFUNC, (Function *)0x0 }, /* ` */
+
+ /* Lowercase alphabet. */
+ { ISFUNC, (Function *)0x0 }, /* a */
+ { ISFUNC, (Function *)0x0 }, /* b */
+ { ISFUNC, (Function *)0x0 }, /* c */
+ { ISFUNC, (Function *)0x0 }, /* d */
+ { ISFUNC, rl_call_last_kbd_macro }, /* e */
+ { ISFUNC, (Function *)0x0 }, /* f */
+ { ISFUNC, (Function *)0x0 }, /* g */
+ { ISFUNC, (Function *)0x0 }, /* h */
+ { ISFUNC, (Function *)0x0 }, /* i */
+ { ISFUNC, (Function *)0x0 }, /* j */
+ { ISFUNC, (Function *)0x0 }, /* k */
+ { ISFUNC, (Function *)0x0 }, /* l */
+ { ISFUNC, (Function *)0x0 }, /* m */
+ { ISFUNC, (Function *)0x0 }, /* n */
+ { ISFUNC, (Function *)0x0 }, /* o */
+ { ISFUNC, (Function *)0x0 }, /* p */
+ { ISFUNC, (Function *)0x0 }, /* q */
+ { ISFUNC, (Function *)0x0 }, /* r */
+ { ISFUNC, (Function *)0x0 }, /* s */
+ { ISFUNC, (Function *)0x0 }, /* t */
+ { ISFUNC, (Function *)0x0 }, /* u */
+ { ISFUNC, (Function *)0x0 }, /* v */
+ { ISFUNC, (Function *)0x0 }, /* w */
+ { ISFUNC, (Function *)0x0 }, /* x */
+ { ISFUNC, (Function *)0x0 }, /* y */
+ { ISFUNC, (Function *)0x0 }, /* z */
+
+ /* Final punctuation. */
+ { ISFUNC, (Function *)0x0 }, /* { */
+ { ISFUNC, (Function *)0x0 }, /* | */
+ { ISFUNC, (Function *)0x0 }, /* } */
+ { ISFUNC, (Function *)0x0 }, /* ~ */
+ { ISFUNC, rl_backward_kill_line }, /* RUBOUT */
+
+#if KEYMAP_SIZE > 128
+ /* Undefined keys. */
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 }
+#endif /* KEYMAP_SIZE > 128 */
+};
diff --git a/contrib/libreadline/examples/Inputrc b/contrib/libreadline/examples/Inputrc
new file mode 100644
index 0000000..5b71bd7
--- /dev/null
+++ b/contrib/libreadline/examples/Inputrc
@@ -0,0 +1,65 @@
+# My ~/.inputrc file is in -*- text -*- for easy editing with Emacs.
+#
+# Notice the various bindings which are conditionalized depending
+# on which program is running, or what terminal is active.
+#
+
+# In all programs, all terminals, make sure this is bound.
+"\C-x\C-r": re-read-init-file
+
+# Hp terminals (and some others) have ugly default behaviour for C-h.
+"\C-h": backward-delete-char
+"\e\C-h": backward-kill-word
+"\C-xd": dump-functions
+
+# In xterm windows, make the arrow keys do the right thing.
+$if TERM=xterm
+"\e[A": previous-history
+"\e[B": next-history
+"\e[C": forward-char
+"\e[D": backward-char
+
+# alternate arrow key prefix
+"\eOA": previous-history
+"\eOB": next-history
+"\eOC": forward-char
+"\eOD": backward-char
+
+# Under Xterm in Bash, we bind local Function keys to do something useful.
+$if Bash
+"\e[11~": "Function Key 1"
+"\e[12~": "Function Key 2"
+"\e[13~": "Function Key 3"
+"\e[14~": "Function Key 4"
+"\e[15~": "Function Key 5"
+
+# I know the following escape sequence numbers are 1 greater than
+# the function key. Don't ask me why, I didn't design the xterm terminal.
+"\e[17~": "Function Key 6"
+"\e[18~": "Function Key 7"
+"\e[19~": "Function Key 8"
+"\e[20~": "Function Key 9"
+"\e[21~": "Function Key 10"
+$endif
+$endif
+
+# For Bash, all terminals, add some Bash specific hacks.
+$if Bash
+"\C-xv": show-bash-version
+"\C-x\C-e": shell-expand-line
+
+# Here is one for editing my path.
+"\C-xp": "$PATH\C-x\C-e\C-e\"\C-aPATH=\":\C-b"
+
+# Make C-x r read my mail in emacs.
+# "\C-xr": "emacs -f rmail\C-j"
+$endif
+
+# For FTP, different hacks:
+$if Ftp
+"\C-xg": "get \M-?"
+"\C-xt": "put \M-?"
+"\M-.": yank-last-arg
+$endif
+
+" ": self-insert
diff --git a/contrib/libreadline/examples/Makefile b/contrib/libreadline/examples/Makefile
new file mode 100644
index 0000000..cfa7745
--- /dev/null
+++ b/contrib/libreadline/examples/Makefile
@@ -0,0 +1,19 @@
+# This is the Makefile for the examples subdirectory of readline. -*- text -*-
+#
+EXECUTABLES = fileman rltest
+CFLAGS = -g -I../.. -I..
+LDFLAGS = -g -L..
+
+.c.o:
+ $(CC) $(CFLAGS) -c $<
+
+all: $(EXECUTABLES)
+
+fileman: fileman.o
+ $(CC) $(LDFLAGS) -o $@ fileman.o -lreadline -ltermcap
+
+rltest: rltest.o
+ $(CC) $(LDFLAGS) -o $@ rltest.o -lreadline -ltermcap
+
+fileman.o: fileman.c
+rltest.o: rltest.c
diff --git a/contrib/libreadline/examples/fileman.c b/contrib/libreadline/examples/fileman.c
new file mode 100644
index 0000000..8709120
--- /dev/null
+++ b/contrib/libreadline/examples/fileman.c
@@ -0,0 +1,426 @@
+/* fileman.c -- A tiny application which demonstrates how to use the
+ GNU Readline library. This application interactively allows users
+ to manipulate files and their modes. */
+
+#include <stdio.h>
+#include <sys/types.h>
+#include <sys/file.h>
+#include <sys/stat.h>
+#include <sys/errno.h>
+
+#include <readline/readline.h>
+#include <readline/history.h>
+
+extern char *getwd ();
+extern char *xmalloc ();
+
+/* The names of functions that actually do the manipulation. */
+int com_list (), com_view (), com_rename (), com_stat (), com_pwd ();
+int com_delete (), com_help (), com_cd (), com_quit ();
+
+/* A structure which contains information on the commands this program
+ can understand. */
+
+typedef struct {
+ char *name; /* User printable name of the function. */
+ Function *func; /* Function to call to do the job. */
+ char *doc; /* Documentation for this function. */
+} COMMAND;
+
+COMMAND commands[] = {
+ { "cd", com_cd, "Change to directory DIR" },
+ { "delete", com_delete, "Delete FILE" },
+ { "help", com_help, "Display this text" },
+ { "?", com_help, "Synonym for `help'" },
+ { "list", com_list, "List files in DIR" },
+ { "ls", com_list, "Synonym for `list'" },
+ { "pwd", com_pwd, "Print the current working directory" },
+ { "quit", com_quit, "Quit using Fileman" },
+ { "rename", com_rename, "Rename FILE to NEWNAME" },
+ { "stat", com_stat, "Print out statistics on FILE" },
+ { "view", com_view, "View the contents of FILE" },
+ { (char *)NULL, (Function *)NULL, (char *)NULL }
+};
+
+/* Forward declarations. */
+char *stripwhite ();
+COMMAND *find_command ();
+
+/* The name of this program, as taken from argv[0]. */
+char *progname;
+
+/* When non-zero, this global means the user is done using this program. */
+int done;
+
+char *
+dupstr (s)
+ int s;
+{
+ char *r;
+
+ r = xmalloc (strlen (s) + 1);
+ strcpy (r, s);
+ return (r);
+}
+
+main (argc, argv)
+ int argc;
+ char **argv;
+{
+ char *line, *s;
+
+ progname = argv[0];
+
+ initialize_readline (); /* Bind our completer. */
+
+ /* Loop reading and executing lines until the user quits. */
+ for ( ; done == 0; )
+ {
+ line = readline ("FileMan: ");
+
+ if (!line)
+ break;
+
+ /* Remove leading and trailing whitespace from the line.
+ Then, if there is anything left, add it to the history list
+ and execute it. */
+ s = stripwhite (line);
+
+ if (*s)
+ {
+ add_history (s);
+ execute_line (s);
+ }
+
+ free (line);
+ }
+ exit (0);
+}
+
+/* Execute a command line. */
+int
+execute_line (line)
+ char *line;
+{
+ register int i;
+ COMMAND *command;
+ char *word;
+
+ /* Isolate the command word. */
+ i = 0;
+ while (line[i] && whitespace (line[i]))
+ i++;
+ word = line + i;
+
+ while (line[i] && !whitespace (line[i]))
+ i++;
+
+ if (line[i])
+ line[i++] = '\0';
+
+ command = find_command (word);
+
+ if (!command)
+ {
+ fprintf (stderr, "%s: No such command for FileMan.\n", word);
+ return (-1);
+ }
+
+ /* Get argument to command, if any. */
+ while (whitespace (line[i]))
+ i++;
+
+ word = line + i;
+
+ /* Call the function. */
+ return ((*(command->func)) (word));
+}
+
+/* Look up NAME as the name of a command, and return a pointer to that
+ command. Return a NULL pointer if NAME isn't a command name. */
+COMMAND *
+find_command (name)
+ char *name;
+{
+ register int i;
+
+ for (i = 0; commands[i].name; i++)
+ if (strcmp (name, commands[i].name) == 0)
+ return (&commands[i]);
+
+ return ((COMMAND *)NULL);
+}
+
+/* Strip whitespace from the start and end of STRING. Return a pointer
+ into STRING. */
+char *
+stripwhite (string)
+ char *string;
+{
+ register char *s, *t;
+
+ for (s = string; whitespace (*s); s++)
+ ;
+
+ if (*s == 0)
+ return (s);
+
+ t = s + strlen (s) - 1;
+ while (t > s && whitespace (*t))
+ t--;
+ *++t = '\0';
+
+ return s;
+}
+
+/* **************************************************************** */
+/* */
+/* Interface to Readline Completion */
+/* */
+/* **************************************************************** */
+
+char *command_generator ();
+char **fileman_completion ();
+
+/* Tell the GNU Readline library how to complete. We want to try to complete
+ on command names if this is the first word in the line, or on filenames
+ if not. */
+initialize_readline ()
+{
+ /* Allow conditional parsing of the ~/.inputrc file. */
+ rl_readline_name = "FileMan";
+
+ /* Tell the completer that we want a crack first. */
+ rl_attempted_completion_function = (CPPFunction *)fileman_completion;
+}
+
+/* Attempt to complete on the contents of TEXT. START and END bound the
+ region of rl_line_buffer that contains the word to complete. TEXT is
+ the word to complete. We can use the entire contents of rl_line_buffer
+ in case we want to do some simple parsing. Return the array of matches,
+ or NULL if there aren't any. */
+char **
+fileman_completion (text, start, end)
+ char *text;
+ int start, end;
+{
+ char **matches;
+
+ matches = (char **)NULL;
+
+ /* If this word is at the start of the line, then it is a command
+ to complete. Otherwise it is the name of a file in the current
+ directory. */
+ if (start == 0)
+ matches = completion_matches (text, command_generator);
+
+ return (matches);
+}
+
+/* Generator function for command completion. STATE lets us know whether
+ to start from scratch; without any state (i.e. STATE == 0), then we
+ start at the top of the list. */
+char *
+command_generator (text, state)
+ char *text;
+ int state;
+{
+ static int list_index, len;
+ char *name;
+
+ /* If this is a new word to complete, initialize now. This includes
+ saving the length of TEXT for efficiency, and initializing the index
+ variable to 0. */
+ if (!state)
+ {
+ list_index = 0;
+ len = strlen (text);
+ }
+
+ /* Return the next name which partially matches from the command list. */
+ while (name = commands[list_index].name)
+ {
+ list_index++;
+
+ if (strncmp (name, text, len) == 0)
+ return (dupstr(name));
+ }
+
+ /* If no names matched, then return NULL. */
+ return ((char *)NULL);
+}
+
+/* **************************************************************** */
+/* */
+/* FileMan Commands */
+/* */
+/* **************************************************************** */
+
+/* String to pass to system (). This is for the LIST, VIEW and RENAME
+ commands. */
+static char syscom[1024];
+
+/* List the file(s) named in arg. */
+com_list (arg)
+ char *arg;
+{
+ if (!arg)
+ arg = "";
+
+ sprintf (syscom, "ls -FClg %s", arg);
+ return (system (syscom));
+}
+
+com_view (arg)
+ char *arg;
+{
+ if (!valid_argument ("view", arg))
+ return 1;
+
+ sprintf (syscom, "more %s", arg);
+ return (system (syscom));
+}
+
+com_rename (arg)
+ char *arg;
+{
+ too_dangerous ("rename");
+ return (1);
+}
+
+com_stat (arg)
+ char *arg;
+{
+ struct stat finfo;
+
+ if (!valid_argument ("stat", arg))
+ return (1);
+
+ if (stat (arg, &finfo) == -1)
+ {
+ perror (arg);
+ return (1);
+ }
+
+ printf ("Statistics for `%s':\n", arg);
+
+ printf ("%s has %d link%s, and is %d byte%s in length.\n", arg,
+ finfo.st_nlink,
+ (finfo.st_nlink == 1) ? "" : "s",
+ finfo.st_size,
+ (finfo.st_size == 1) ? "" : "s");
+ printf ("Inode Last Change at: %s", ctime (&finfo.st_ctime));
+ printf (" Last access at: %s", ctime (&finfo.st_atime));
+ printf (" Last modified at: %s", ctime (&finfo.st_mtime));
+ return (0);
+}
+
+com_delete (arg)
+ char *arg;
+{
+ too_dangerous ("delete");
+ return (1);
+}
+
+/* Print out help for ARG, or for all of the commands if ARG is
+ not present. */
+com_help (arg)
+ char *arg;
+{
+ register int i;
+ int printed = 0;
+
+ for (i = 0; commands[i].name; i++)
+ {
+ if (!*arg || (strcmp (arg, commands[i].name) == 0))
+ {
+ printf ("%s\t\t%s.\n", commands[i].name, commands[i].doc);
+ printed++;
+ }
+ }
+
+ if (!printed)
+ {
+ printf ("No commands match `%s'. Possibilties are:\n", arg);
+
+ for (i = 0; commands[i].name; i++)
+ {
+ /* Print in six columns. */
+ if (printed == 6)
+ {
+ printed = 0;
+ printf ("\n");
+ }
+
+ printf ("%s\t", commands[i].name);
+ printed++;
+ }
+
+ if (printed)
+ printf ("\n");
+ }
+ return (0);
+}
+
+/* Change to the directory ARG. */
+com_cd (arg)
+ char *arg;
+{
+ if (chdir (arg) == -1)
+ {
+ perror (arg);
+ return 1;
+ }
+
+ com_pwd ("");
+ return (0);
+}
+
+/* Print out the current working directory. */
+com_pwd (ignore)
+ char *ignore;
+{
+ char dir[1024], *s;
+
+ s = getwd (dir);
+ if (s == 0)
+ {
+ printf ("Error getting pwd: %s\n", dir);
+ return 1;
+ }
+
+ printf ("Current directory is %s\n", dir);
+ return 0;
+}
+
+/* The user wishes to quit using this program. Just set DONE non-zero. */
+com_quit (arg)
+ char *arg;
+{
+ done = 1;
+ return (0);
+}
+
+/* Function which tells you that you can't do this. */
+too_dangerous (caller)
+ char *caller;
+{
+ fprintf (stderr,
+ "%s: Too dangerous for me to distribute. Write it yourself.\n",
+ caller);
+}
+
+/* Return non-zero if ARG is a valid argument for CALLER, else print
+ an error message and return zero. */
+int
+valid_argument (caller, arg)
+ char *caller, *arg;
+{
+ if (!arg || !*arg)
+ {
+ fprintf (stderr, "%s: Argument required.\n", caller);
+ return (0);
+ }
+
+ return (1);
+}
diff --git a/contrib/libreadline/examples/histexamp.c b/contrib/libreadline/examples/histexamp.c
new file mode 100644
index 0000000..eceb66d
--- /dev/null
+++ b/contrib/libreadline/examples/histexamp.c
@@ -0,0 +1,82 @@
+main ()
+{
+ char line[1024], *t;
+ int len, done = 0;
+
+ line[0] = 0;
+
+ using_history ();
+ while (!done)
+ {
+ printf ("history$ ");
+ fflush (stdout);
+ t = fgets (line, sizeof (line) - 1, stdin);
+ if (t && *t)
+ {
+ len = strlen (t);
+ if (t[len - 1] == '\n')
+ t[len - 1] = '\0';
+ }
+
+ if (!t)
+ strcpy (line, "quit");
+
+ if (line[0])
+ {
+ char *expansion;
+ int result;
+
+ using_history ();
+
+ result = history_expand (line, &expansion);
+ if (result)
+ fprintf (stderr, "%s\n", expansion);
+
+ if (result < 0 || result == 2)
+ {
+ free (expansion);
+ continue;
+ }
+
+ add_history (expansion);
+ strncpy (line, expansion, sizeof (line) - 1);
+ free (expansion);
+ }
+
+ if (strcmp (line, "quit") == 0)
+ done = 1;
+ else if (strcmp (line, "save") == 0)
+ write_history ("history_file");
+ else if (strcmp (line, "read") == 0)
+ read_history ("history_file");
+ else if (strcmp (line, "list") == 0)
+ {
+ register HIST_ENTRY **the_list;
+ register int i;
+
+ the_list = history_list ();
+ if (the_list)
+ for (i = 0; the_list[i]; i++)
+ printf ("%d: %s\n", i + history_base, the_list[i]->line);
+ }
+ else if (strncmp (line, "delete", 6) == 0)
+ {
+ int which;
+ if ((sscanf (line + 6, "%d", &which)) == 1)
+ {
+ HIST_ENTRY *entry = remove_history (which);
+ if (!entry)
+ fprintf (stderr, "No such entry %d\n", which);
+ else
+ {
+ free (entry->line);
+ free (entry);
+ }
+ }
+ else
+ {
+ fprintf (stderr, "non-numeric arg given to `delete'\n");
+ }
+ }
+ }
+}
diff --git a/contrib/libreadline/examples/manexamp.c b/contrib/libreadline/examples/manexamp.c
new file mode 100644
index 0000000..3496efa
--- /dev/null
+++ b/contrib/libreadline/examples/manexamp.c
@@ -0,0 +1,94 @@
+/* manexamp.c -- The examples which appear in the documentation are here. */
+
+#include <stdio.h>
+#include <readline/readline.h>
+
+
+/* **************************************************************** */
+/* */
+* How to Emulate gets () */
+/* */
+/* **************************************************************** */
+
+/* A static variable for holding the line. */
+static char *line_read = (char *)NULL;
+
+/* Read a string, and return a pointer to it. Returns NULL on EOF. */
+char *
+rl_gets ()
+{
+ /* If the buffer has already been allocated, return the memory
+ to the free pool. */
+ if (line_read)
+ {
+ free (line_read);
+ line_read = (char *)NULL;
+ }
+
+ /* Get a line from the user. */
+ line_read = readline ("");
+
+ /* If the line has any text in it, save it on the history. */
+ if (line_read && *line_read)
+ add_history (line_read);
+
+ return (line_read);
+}
+
+/* **************************************************************** */
+/* */
+/* Writing a Function to be Called by Readline. */
+/* */
+/* **************************************************************** */
+
+/* Invert the case of the COUNT following characters. */
+invert_case_line (count, key)
+ int count, key;
+{
+ register int start, end;
+
+ start = rl_point;
+
+ if (count < 0)
+ {
+ direction = -1;
+ count = -count;
+ }
+ else
+ direction = 1;
+
+ /* Find the end of the range to modify. */
+ end = start + (count * direction);
+
+ /* Force it to be within range. */
+ if (end > rl_end)
+ end = rl_end;
+ else if (end < 0)
+ end = -1;
+
+ if (start > end)
+ {
+ int temp = start;
+ start = end;
+ end = temp;
+ }
+
+ if (start == end)
+ return;
+
+ /* Tell readline that we are modifying the line, so save the undo
+ information. */
+ rl_modifying (start, end);
+
+ for (; start != end; start += direction)
+ {
+ if (uppercase_p (rl_line_buffer[start]))
+ rl_line_buffer[start] = to_lower (rl_line_buffer[start]);
+ else if (lowercase_p (rl_line_buffer[start]))
+ rl_line_buffer[start] = to_upper (rl_line_buffer[start]);
+ }
+
+ /* Move point to on top of the last character changed. */
+ rl_point = end - direction;
+}
+
diff --git a/contrib/libreadline/examples/rltest.c b/contrib/libreadline/examples/rltest.c
new file mode 100644
index 0000000..311629f
--- /dev/null
+++ b/contrib/libreadline/examples/rltest.c
@@ -0,0 +1,54 @@
+/* **************************************************************** */
+/* */
+/* Testing Readline */
+/* */
+/* **************************************************************** */
+
+#include <stdio.h>
+#include <sys/types.h>
+#include "../readline.h"
+#include "../history.h"
+
+main ()
+{
+ HIST_ENTRY **history_list ();
+ char *temp = (char *)NULL;
+ char *prompt = "readline$ ";
+ int done = 0;
+
+ while (!done)
+ {
+ temp = readline (prompt);
+
+ /* Test for EOF. */
+ if (!temp)
+ exit (1);
+
+ /* If there is anything on the line, print it and remember it. */
+ if (*temp)
+ {
+ fprintf (stderr, "%s\r\n", temp);
+ add_history (temp);
+ }
+
+ /* Check for `command' that we handle. */
+ if (strcmp (temp, "quit") == 0)
+ done = 1;
+
+ if (strcmp (temp, "list") == 0)
+ {
+ HIST_ENTRY **list = history_list ();
+ register int i;
+ if (list)
+ {
+ for (i = 0; list[i]; i++)
+ {
+ fprintf (stderr, "%d: %s\r\n", i, list[i]->line);
+ free (list[i]->line);
+ }
+ free (list);
+ }
+ }
+ free (temp);
+ }
+}
diff --git a/contrib/libreadline/funmap.c b/contrib/libreadline/funmap.c
new file mode 100644
index 0000000..6b7d351
--- /dev/null
+++ b/contrib/libreadline/funmap.c
@@ -0,0 +1,247 @@
+/* funmap.c -- attach names to functions. */
+
+/* Copyright (C) 1987, 1989, 1992 Free Software Foundation, Inc.
+
+ This file is part of the GNU Readline Library, a library for
+ reading lines of text with interactive input and history editing.
+
+ The GNU Readline Library is free software; you can redistribute it
+ and/or modify it under the terms of the GNU General Public License
+ as published by the Free Software Foundation; either version 1, or
+ (at your option) any later version.
+
+ The GNU Readline Library is distributed in the hope that it will be
+ useful, but WITHOUT ANY WARRANTY; without even the implied warranty
+ of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ The GNU General Public License is often shipped with GNU software, and
+ is generally kept in a file called COPYING or LICENSE. If you do not
+ have a copy of the license, write to the Free Software Foundation,
+ 675 Mass Ave, Cambridge, MA 02139, USA. */
+#define READLINE_LIBRARY
+
+#if defined (HAVE_CONFIG_H)
+# include <config.h>
+#endif
+
+extern char *xmalloc (), *xrealloc ();
+
+#if !defined (BUFSIZ)
+#include <stdio.h>
+#endif /* BUFSIZ */
+
+#if defined (HAVE_STDLIB_H)
+# include <stdlib.h>
+#else
+# include "ansi_stdlib.h"
+#endif /* HAVE_STDLIB_H */
+
+#include "rlconf.h"
+#include "readline.h"
+
+extern int _rl_qsort_string_compare ();
+
+FUNMAP **funmap;
+static int funmap_size;
+static int funmap_entry;
+
+/* After initializing the function map, this is the index of the first
+ program specific function. */
+int funmap_program_specific_entry_start;
+
+static FUNMAP default_funmap[] = {
+ { "abort", rl_abort },
+ { "accept-line", rl_newline },
+ { "arrow-key-prefix", rl_arrow_keys },
+ { "backward-char", rl_backward },
+ { "backward-delete-char", rl_rubout },
+ { "backward-kill-line", rl_backward_kill_line },
+ { "backward-kill-word", rl_backward_kill_word },
+ { "backward-word", rl_backward_word },
+ { "beginning-of-history", rl_beginning_of_history },
+ { "beginning-of-line", rl_beg_of_line },
+ { "call-last-kbd-macro", rl_call_last_kbd_macro },
+ { "capitalize-word", rl_capitalize_word },
+ { "character-search", rl_char_search },
+ { "character-search-backward", rl_backward_char_search },
+ { "clear-screen", rl_clear_screen },
+ { "complete", rl_complete },
+ { "copy-backward-word", rl_copy_backward_word },
+ { "copy-forward-word", rl_copy_forward_word },
+ { "copy-region-as-kill", rl_copy_region_to_kill },
+ { "delete-char", rl_delete },
+ { "delete-horizontal-space", rl_delete_horizontal_space },
+ { "digit-argument", rl_digit_argument },
+ { "do-lowercase-version", rl_do_lowercase_version },
+ { "downcase-word", rl_downcase_word },
+ { "dump-functions", rl_dump_functions },
+ { "dump-variables", rl_dump_variables },
+ { "emacs-editing-mode", rl_emacs_editing_mode },
+ { "end-kbd-macro", rl_end_kbd_macro },
+ { "end-of-history", rl_end_of_history },
+ { "end-of-line", rl_end_of_line },
+ { "exchange-point-and-mark", rl_exchange_point_and_mark },
+ { "forward-char", rl_forward },
+ { "forward-search-history", rl_forward_search_history },
+ { "forward-word", rl_forward_word },
+ { "history-search-backward", rl_history_search_backward },
+ { "history-search-forward", rl_history_search_forward },
+ { "insert-comment", rl_insert_comment },
+ { "insert-completions", rl_insert_completions },
+ { "kill-whole-line", rl_kill_full_line },
+ { "kill-line", rl_kill_line },
+ { "kill-region", rl_kill_region },
+ { "kill-word", rl_kill_word },
+ { "next-history", rl_get_next_history },
+ { "non-incremental-forward-search-history", rl_noninc_forward_search },
+ { "non-incremental-reverse-search-history", rl_noninc_reverse_search },
+ { "non-incremental-forward-search-history-again", rl_noninc_forward_search_again },
+ { "non-incremental-reverse-search-history-again", rl_noninc_reverse_search_again },
+ { "possible-completions", rl_possible_completions },
+ { "previous-history", rl_get_previous_history },
+ { "quoted-insert", rl_quoted_insert },
+ { "re-read-init-file", rl_re_read_init_file },
+ { "redraw-current-line", rl_refresh_line},
+ { "reverse-search-history", rl_reverse_search_history },
+ { "revert-line", rl_revert_line },
+ { "self-insert", rl_insert },
+ { "set-mark", rl_set_mark },
+ { "start-kbd-macro", rl_start_kbd_macro },
+ { "tab-insert", rl_tab_insert },
+ { "tilde-expand", rl_tilde_expand },
+ { "transpose-chars", rl_transpose_chars },
+ { "transpose-words", rl_transpose_words },
+ { "tty-status", rl_tty_status },
+ { "undo", rl_undo_command },
+ { "universal-argument", rl_universal_argument },
+ { "unix-line-discard", rl_unix_line_discard },
+ { "unix-word-rubout", rl_unix_word_rubout },
+ { "upcase-word", rl_upcase_word },
+ { "yank", rl_yank },
+ { "yank-last-arg", rl_yank_last_arg },
+ { "yank-nth-arg", rl_yank_nth_arg },
+ { "yank-pop", rl_yank_pop },
+
+#if defined (VI_MODE)
+ { "vi-append-eol", rl_vi_append_eol },
+ { "vi-append-mode", rl_vi_append_mode },
+ { "vi-arg-digit", rl_vi_arg_digit },
+ { "vi-back-to-indent", rl_vi_back_to_indent },
+ { "vi-bWord", rl_vi_bWord },
+ { "vi-bracktype", rl_vi_bracktype },
+ { "vi-bword", rl_vi_bword },
+ { "vi-change-case", rl_vi_change_case },
+ { "vi-change-char", rl_vi_change_char },
+ { "vi-change-to", rl_vi_change_to },
+ { "vi-char-search", rl_vi_char_search },
+ { "vi-column", rl_vi_column },
+ { "vi-complete", rl_vi_complete },
+ { "vi-delete", rl_vi_delete },
+ { "vi-delete-to", rl_vi_delete_to },
+ { "vi-eWord", rl_vi_eWord },
+ { "vi-editing-mode", rl_vi_editing_mode },
+ { "vi-end-word", rl_vi_end_word },
+ { "vi-eof-maybe", rl_vi_eof_maybe },
+ { "vi-eword", rl_vi_eword },
+ { "vi-fWord", rl_vi_fWord },
+ { "vi-fetch-history", rl_vi_fetch_history },
+ { "vi-first-print", rl_vi_first_print },
+ { "vi-fword", rl_vi_fword },
+ { "vi-goto-mark", rl_vi_goto_mark },
+ { "vi-insert-beg", rl_vi_insert_beg },
+ { "vi-insertion-mode", rl_vi_insertion_mode },
+ { "vi-match", rl_vi_match },
+ { "vi-movement-mode", rl_vi_movement_mode },
+ { "vi-next-word", rl_vi_next_word },
+ { "vi-overstrike", rl_vi_overstrike },
+ { "vi-overstrike-delete", rl_vi_overstrike_delete },
+ { "vi-prev-word", rl_vi_prev_word },
+ { "vi-put", rl_vi_put },
+ { "vi-redo", rl_vi_redo },
+ { "vi-replace", rl_vi_replace },
+ { "vi-search", rl_vi_search },
+ { "vi-search-again", rl_vi_search_again },
+ { "vi-set-mark", rl_vi_set_mark },
+ { "vi-subst", rl_vi_subst },
+ { "vi-tilde-expand", rl_vi_tilde_expand },
+ { "vi-yank-arg", rl_vi_yank_arg },
+ { "vi-yank-to", rl_vi_yank_to },
+#endif /* VI_MODE */
+
+ {(char *)NULL, (Function *)NULL }
+};
+
+int
+rl_add_funmap_entry (name, function)
+ char *name;
+ Function *function;
+{
+ if (funmap_entry + 2 >= funmap_size)
+ {
+ funmap_size += 64;
+ funmap = (FUNMAP **)xrealloc (funmap, funmap_size * sizeof (FUNMAP *));
+ }
+
+ funmap[funmap_entry] = (FUNMAP *)xmalloc (sizeof (FUNMAP));
+ funmap[funmap_entry]->name = name;
+ funmap[funmap_entry]->function = function;
+
+ funmap[++funmap_entry] = (FUNMAP *)NULL;
+ return funmap_entry;
+}
+
+static int funmap_initialized;
+
+/* Make the funmap contain all of the default entries. */
+void
+rl_initialize_funmap ()
+{
+ register int i;
+
+ if (funmap_initialized)
+ return;
+
+ for (i = 0; default_funmap[i].name; i++)
+ rl_add_funmap_entry (default_funmap[i].name, default_funmap[i].function);
+
+ funmap_initialized = 1;
+ funmap_program_specific_entry_start = i;
+}
+
+/* Produce a NULL terminated array of known function names. The array
+ is sorted. The array itself is allocated, but not the strings inside.
+ You should free () the array when you done, but not the pointrs. */
+char **
+rl_funmap_names ()
+{
+ char **result;
+ int result_size, result_index;
+
+ /* Make sure that the function map has been initialized. */
+ rl_initialize_funmap ();
+
+ for (result_index = result_size = 0, result = (char **)NULL; funmap[result_index]; result_index++)
+ {
+ if (result_index + 2 > result_size)
+ {
+ result_size += 20;
+ result = (char **)xrealloc (result, result_size * sizeof (char *));
+ }
+
+ result[result_index] = funmap[result_index]->name;
+ result[result_index + 1] = (char *)NULL;
+ }
+
+ qsort (result, result_index, sizeof (char *), _rl_qsort_string_compare);
+ return (result);
+}
+
+/* Things that mean `Control'. */
+char *possible_control_prefixes[] = {
+ "Control-", "C-", "CTRL-", (char *)NULL
+};
+
+char *possible_meta_prefixes[] = {
+ "Meta", "M-", (char *)NULL
+};
diff --git a/contrib/libreadline/histexpand.c b/contrib/libreadline/histexpand.c
new file mode 100644
index 0000000..d916c74
--- /dev/null
+++ b/contrib/libreadline/histexpand.c
@@ -0,0 +1,1358 @@
+/* histexpand.c -- history expansion. */
+
+/* Copyright (C) 1989, 1992 Free Software Foundation, Inc.
+
+ This file contains the GNU History Library (the Library), a set of
+ routines for managing the text of previously typed lines.
+
+ The Library is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 1, or (at your option)
+ any later version.
+
+ The Library is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ General Public License for more details.
+
+ The GNU General Public License is often shipped with GNU software, and
+ is generally kept in a file called COPYING or LICENSE. If you do not
+ have a copy of the license, write to the Free Software Foundation,
+ 675 Mass Ave, Cambridge, MA 02139, USA. */
+
+#define READLINE_LIBRARY
+
+#if defined (HAVE_CONFIG_H)
+# include <config.h>
+#endif
+
+#include <stdio.h>
+
+#if defined (HAVE_STDLIB_H)
+# include <stdlib.h>
+#else
+# include "ansi_stdlib.h"
+#endif /* HAVE_STDLIB_H */
+
+#if defined (HAVE_UNISTD_H)
+# include <unistd.h>
+#endif
+
+#if defined (HAVE_STRING_H)
+# include <string.h>
+#else
+# include <strings.h>
+#endif /* !HAVE_STRING_H */
+
+#include "history.h"
+#include "histlib.h"
+
+static char error_pointer;
+
+static char *subst_lhs;
+static char *subst_rhs;
+static int subst_lhs_len;
+static int subst_rhs_len;
+
+static char *get_history_word_specifier ();
+static char *history_find_word ();
+
+extern int history_offset;
+
+#if defined (SHELL)
+extern char *single_quote ();
+#else
+static char *single_quote ();
+#endif /* !SHELL */
+static char *quote_breaks ();
+
+extern char *xmalloc (), *xrealloc ();
+
+/* Variables exported by this file. */
+/* The character that represents the start of a history expansion
+ request. This is usually `!'. */
+char history_expansion_char = '!';
+
+/* The character that invokes word substitution if found at the start of
+ a line. This is usually `^'. */
+char history_subst_char = '^';
+
+/* During tokenization, if this character is seen as the first character
+ of a word, then it, and all subsequent characters upto a newline are
+ ignored. For a Bourne shell, this should be '#'. Bash special cases
+ the interactive comment character to not be a comment delimiter. */
+char history_comment_char = '\0';
+
+/* The list of characters which inhibit the expansion of text if found
+ immediately following history_expansion_char. */
+char *history_no_expand_chars = " \t\n\r=";
+
+/* If set to a non-zero value, single quotes inhibit history expansion.
+ The default is 0. */
+int history_quotes_inhibit_expansion = 0;
+
+/* **************************************************************** */
+/* */
+/* History Expansion */
+/* */
+/* **************************************************************** */
+
+/* Hairy history expansion on text, not tokens. This is of general
+ use, and thus belongs in this library. */
+
+/* The last string searched for by a !?string? search. */
+static char *search_string;
+
+/* The last string matched by a !?string? search. */
+static char *search_match;
+
+/* Return the event specified at TEXT + OFFSET modifying OFFSET to
+ point to after the event specifier. Just a pointer to the history
+ line is returned; NULL is returned in the event of a bad specifier.
+ You pass STRING with *INDEX equal to the history_expansion_char that
+ begins this specification.
+ DELIMITING_QUOTE is a character that is allowed to end the string
+ specification for what to search for in addition to the normal
+ characters `:', ` ', `\t', `\n', and sometimes `?'.
+ So you might call this function like:
+ line = get_history_event ("!echo:p", &index, 0); */
+char *
+get_history_event (string, caller_index, delimiting_quote)
+ char *string;
+ int *caller_index;
+ int delimiting_quote;
+{
+ register int i;
+ register char c;
+ HIST_ENTRY *entry;
+ int which, sign, local_index, substring_okay;
+ Function *search_func;
+ char *temp;
+
+ /* The event can be specified in a number of ways.
+
+ !! the previous command
+ !n command line N
+ !-n current command-line minus N
+ !str the most recent command starting with STR
+ !?str[?]
+ the most recent command containing STR
+
+ All values N are determined via HISTORY_BASE. */
+
+ i = *caller_index;
+
+ if (string[i] != history_expansion_char)
+ return ((char *)NULL);
+
+ /* Move on to the specification. */
+ i++;
+
+ sign = 1;
+ substring_okay = 0;
+
+#define RETURN_ENTRY(e, w) \
+ return ((e = history_get (w)) ? e->line : (char *)NULL)
+
+ /* Handle !! case. */
+ if (string[i] == history_expansion_char)
+ {
+ i++;
+ which = history_base + (history_length - 1);
+ *caller_index = i;
+ RETURN_ENTRY (entry, which);
+ }
+
+ /* Hack case of numeric line specification. */
+ if (string[i] == '-')
+ {
+ sign = -1;
+ i++;
+ }
+
+ if (_rl_digit_p (string[i]))
+ {
+ /* Get the extent of the digits and compute the value. */
+ for (which = 0; _rl_digit_p (string[i]); i++)
+ which = (which * 10) + _rl_digit_value (string[i]);
+
+ *caller_index = i;
+
+ if (sign < 0)
+ which = (history_length + history_base) - which;
+
+ RETURN_ENTRY (entry, which);
+ }
+
+ /* This must be something to search for. If the spec begins with
+ a '?', then the string may be anywhere on the line. Otherwise,
+ the string must be found at the start of a line. */
+ if (string[i] == '?')
+ {
+ substring_okay++;
+ i++;
+ }
+
+ /* Only a closing `?' or a newline delimit a substring search string. */
+ for (local_index = i; c = string[i]; i++)
+ if ((!substring_okay && (whitespace (c) || c == ':' ||
+ (history_search_delimiter_chars && member (c, history_search_delimiter_chars)) ||
+ string[i] == delimiting_quote)) ||
+ string[i] == '\n' ||
+ (substring_okay && string[i] == '?'))
+ break;
+
+ which = i - local_index;
+ temp = xmalloc (1 + which);
+ if (which)
+ strncpy (temp, string + local_index, which);
+ temp[which] = '\0';
+
+ if (substring_okay && string[i] == '?')
+ i++;
+
+ *caller_index = i;
+
+#define FAIL_SEARCH() \
+ do { \
+ history_offset = history_length; free (temp) ; return (char *)NULL; \
+ } while (0)
+
+ /* If there is no search string, try to use the previous search string,
+ if one exists. If not, fail immediately. */
+ if (*temp == '\0' && substring_okay)
+ {
+ if (search_string)
+ {
+ free (temp);
+ temp = savestring (search_string);
+ }
+ else
+ FAIL_SEARCH ();
+ }
+
+ search_func = substring_okay ? history_search : history_search_prefix;
+ while (1)
+ {
+ local_index = (*search_func) (temp, -1);
+
+ if (local_index < 0)
+ FAIL_SEARCH ();
+
+ if (local_index == 0 || substring_okay)
+ {
+ entry = current_history ();
+ history_offset = history_length;
+
+ /* If this was a substring search, then remember the
+ string that we matched for word substitution. */
+ if (substring_okay)
+ {
+ FREE (search_string);
+ search_string = temp;
+
+ FREE (search_match);
+ search_match = history_find_word (entry->line, local_index);
+ }
+ else
+ free (temp);
+
+ return (entry->line);
+ }
+
+ if (history_offset)
+ history_offset--;
+ else
+ FAIL_SEARCH ();
+ }
+#undef FAIL_SEARCH
+#undef RETURN_ENTRY
+}
+
+/* Function for extracting single-quoted strings. Used for inhibiting
+ history expansion within single quotes. */
+
+/* Extract the contents of STRING as if it is enclosed in single quotes.
+ SINDEX, when passed in, is the offset of the character immediately
+ following the opening single quote; on exit, SINDEX is left pointing
+ to the closing single quote. */
+static void
+hist_string_extract_single_quoted (string, sindex)
+ char *string;
+ int *sindex;
+{
+ register int i;
+
+ for (i = *sindex; string[i] && string[i] != '\''; i++)
+ ;
+
+ *sindex = i;
+}
+
+#if !defined (SHELL)
+/* Does shell-like quoting using single quotes. */
+static char *
+single_quote (string)
+ char *string;
+{
+ register int c;
+ char *result, *r, *s;
+
+ result = (char *)xmalloc (3 + (3 * strlen (string)));
+ r = result;
+ *r++ = '\'';
+
+ for (s = string; s && (c = *s); s++)
+ {
+ *r++ = c;
+
+ if (c == '\'')
+ {
+ *r++ = '\\'; /* insert escaped single quote */
+ *r++ = '\'';
+ *r++ = '\''; /* start new quoted string */
+ }
+ }
+
+ *r++ = '\'';
+ *r = '\0';
+
+ return (result);
+}
+#endif /* !SHELL */
+
+static char *
+quote_breaks (s)
+ char *s;
+{
+ register char *p, *r;
+ char *ret;
+ int len = 3;
+
+ for (p = s; p && *p; p++, len++)
+ {
+ if (*p == '\'')
+ len += 3;
+ else if (whitespace (*p) || *p == '\n')
+ len += 2;
+ }
+
+ r = ret = xmalloc (len);
+ *r++ = '\'';
+ for (p = s; p && *p; )
+ {
+ if (*p == '\'')
+ {
+ *r++ = '\'';
+ *r++ = '\\';
+ *r++ = '\'';
+ *r++ = '\'';
+ p++;
+ }
+ else if (whitespace (*p) || *p == '\n')
+ {
+ *r++ = '\'';
+ *r++ = *p++;
+ *r++ = '\'';
+ }
+ else
+ *r++ = *p++;
+ }
+ *r++ = '\'';
+ *r = '\0';
+ return ret;
+}
+
+static char *
+hist_error(s, start, current, errtype)
+ char *s;
+ int start, current, errtype;
+{
+ char *temp, *emsg;
+ int ll, elen;
+
+ ll = current - start;
+
+ switch (errtype)
+ {
+ case EVENT_NOT_FOUND:
+ emsg = "event not found";
+ elen = 15;
+ break;
+ case BAD_WORD_SPEC:
+ emsg = "bad word specifier";
+ elen = 18;
+ break;
+ case SUBST_FAILED:
+ emsg = "substitution failed";
+ elen = 19;
+ break;
+ case BAD_MODIFIER:
+ emsg = "unrecognized history modifier";
+ elen = 29;
+ break;
+ default:
+ emsg = "unknown expansion error";
+ elen = 23;
+ break;
+ }
+
+ temp = xmalloc (ll + elen + 3);
+ strncpy (temp, s + start, ll);
+ temp[ll] = ':';
+ temp[ll + 1] = ' ';
+ strcpy (temp + ll + 2, emsg);
+ return (temp);
+}
+
+/* Get a history substitution string from STR starting at *IPTR
+ and return it. The length is returned in LENPTR.
+
+ A backslash can quote the delimiter. If the string is the
+ empty string, the previous pattern is used. If there is
+ no previous pattern for the lhs, the last history search
+ string is used.
+
+ If IS_RHS is 1, we ignore empty strings and set the pattern
+ to "" anyway. subst_lhs is not changed if the lhs is empty;
+ subst_rhs is allowed to be set to the empty string. */
+
+static char *
+get_subst_pattern (str, iptr, delimiter, is_rhs, lenptr)
+ char *str;
+ int *iptr, delimiter, is_rhs, *lenptr;
+{
+ register int si, i, j, k;
+ char *s = (char *) NULL;
+
+ i = *iptr;
+
+ for (si = i; str[si] && str[si] != delimiter; si++)
+ if (str[si] == '\\' && str[si + 1] == delimiter)
+ si++;
+
+ if (si > i || is_rhs)
+ {
+ s = xmalloc (si - i + 1);
+ for (j = 0, k = i; k < si; j++, k++)
+ {
+ /* Remove a backslash quoting the search string delimiter. */
+ if (str[k] == '\\' && str[k + 1] == delimiter)
+ k++;
+ s[j] = str[k];
+ }
+ s[j] = '\0';
+ if (lenptr)
+ *lenptr = j;
+ }
+
+ i = si;
+ if (str[i])
+ i++;
+ *iptr = i;
+
+ return s;
+}
+
+static void
+postproc_subst_rhs ()
+{
+ char *new;
+ int i, j, new_size;
+
+ new = xmalloc (new_size = subst_rhs_len + subst_lhs_len);
+ for (i = j = 0; i < subst_rhs_len; i++)
+ {
+ if (subst_rhs[i] == '&')
+ {
+ if (j + subst_lhs_len >= new_size)
+ new = xrealloc (new, (new_size = new_size * 2 + subst_lhs_len));
+ strcpy (new + j, subst_lhs);
+ j += subst_lhs_len;
+ }
+ else
+ {
+ /* a single backslash protects the `&' from lhs interpolation */
+ if (subst_rhs[i] == '\\' && subst_rhs[i + 1] == '&')
+ i++;
+ if (j >= new_size)
+ new = xrealloc (new, new_size *= 2);
+ new[j++] = subst_rhs[i];
+ }
+ }
+ new[j] = '\0';
+ free (subst_rhs);
+ subst_rhs = new;
+ subst_rhs_len = j;
+}
+
+/* Expand the bulk of a history specifier starting at STRING[START].
+ Returns 0 if everything is OK, -1 if an error occurred, and 1
+ if the `p' modifier was supplied and the caller should just print
+ the returned string. Returns the new index into string in
+ *END_INDEX_PTR, and the expanded specifier in *RET_STRING. */
+static int
+history_expand_internal (string, start, end_index_ptr, ret_string, current_line)
+ char *string;
+ int start, *end_index_ptr;
+ char **ret_string;
+ char *current_line; /* for !# */
+{
+ int i, n, starting_index;
+ int substitute_globally, want_quotes, print_only;
+ char *event, *temp, *result, *tstr, *t, c, *word_spec;
+ int result_len;
+
+ result = xmalloc (result_len = 128);
+
+ i = start;
+
+ /* If it is followed by something that starts a word specifier,
+ then !! is implied as the event specifier. */
+
+ if (member (string[i + 1], ":$*%^"))
+ {
+ char fake_s[3];
+ int fake_i = 0;
+ i++;
+ fake_s[0] = fake_s[1] = history_expansion_char;
+ fake_s[2] = '\0';
+ event = get_history_event (fake_s, &fake_i, 0);
+ }
+ else if (string[i + 1] == '#')
+ {
+ i += 2;
+ event = current_line;
+ }
+ else
+ {
+ int quoted_search_delimiter = 0;
+
+ /* If the character before this `!' is a double or single
+ quote, then this expansion takes place inside of the
+ quoted string. If we have to search for some text ("!foo"),
+ allow the delimiter to end the search string. */
+ if (i && (string[i - 1] == '\'' || string[i - 1] == '"'))
+ quoted_search_delimiter = string[i - 1];
+ event = get_history_event (string, &i, quoted_search_delimiter);
+ }
+
+ if (event == 0)
+ {
+ *ret_string = hist_error (string, start, i, EVENT_NOT_FOUND);
+ free (result);
+ return (-1);
+ }
+
+ /* If a word specifier is found, then do what that requires. */
+ starting_index = i;
+ word_spec = get_history_word_specifier (string, event, &i);
+
+ /* There is no such thing as a `malformed word specifier'. However,
+ it is possible for a specifier that has no match. In that case,
+ we complain. */
+ if (word_spec == (char *)&error_pointer)
+ {
+ *ret_string = hist_error (string, starting_index, i, BAD_WORD_SPEC);
+ free (result);
+ return (-1);
+ }
+
+ /* If no word specifier, than the thing of interest was the event. */
+ temp = word_spec ? savestring (word_spec) : savestring (event);
+ FREE (word_spec);
+
+ /* Perhaps there are other modifiers involved. Do what they say. */
+ want_quotes = substitute_globally = print_only = 0;
+ starting_index = i;
+
+ while (string[i] == ':')
+ {
+ c = string[i + 1];
+
+ if (c == 'g')
+ {
+ substitute_globally = 1;
+ i++;
+ c = string[i + 1];
+ }
+
+ switch (c)
+ {
+ default:
+ *ret_string = hist_error (string, i+1, i+2, BAD_MODIFIER);
+ free (result);
+ free (temp);
+ return -1;
+
+ case 'q':
+ want_quotes = 'q';
+ break;
+
+ case 'x':
+ want_quotes = 'x';
+ break;
+
+ /* :p means make this the last executed line. So we
+ return an error state after adding this line to the
+ history. */
+ case 'p':
+ print_only++;
+ break;
+
+ /* :t discards all but the last part of the pathname. */
+ case 't':
+ tstr = strrchr (temp, '/');
+ if (tstr)
+ {
+ tstr++;
+ t = savestring (tstr);
+ free (temp);
+ temp = t;
+ }
+ break;
+
+ /* :h discards the last part of a pathname. */
+ case 'h':
+ tstr = strrchr (temp, '/');
+ if (tstr)
+ *tstr = '\0';
+ break;
+
+ /* :r discards the suffix. */
+ case 'r':
+ tstr = strrchr (temp, '.');
+ if (tstr)
+ *tstr = '\0';
+ break;
+
+ /* :e discards everything but the suffix. */
+ case 'e':
+ tstr = strrchr (temp, '.');
+ if (tstr)
+ {
+ t = savestring (tstr);
+ free (temp);
+ temp = t;
+ }
+ break;
+
+ /* :s/this/that substitutes `that' for the first
+ occurrence of `this'. :gs/this/that substitutes `that'
+ for each occurrence of `this'. :& repeats the last
+ substitution. :g& repeats the last substitution
+ globally. */
+
+ case '&':
+ case 's':
+ {
+ char *new_event, *t;
+ int delimiter, failed, si, l_temp;
+
+ if (c == 's')
+ {
+ if (i + 2 < (int)strlen (string))
+ delimiter = string[i + 2];
+ else
+ break; /* no search delimiter */
+
+ i += 3;
+
+ t = get_subst_pattern (string, &i, delimiter, 0, &subst_lhs_len);
+ /* An empty substitution lhs with no previous substitution
+ uses the last search string as the lhs. */
+ if (t)
+ {
+ FREE (subst_lhs);
+ subst_lhs = t;
+ }
+ else if (!subst_lhs)
+ {
+ if (search_string && *search_string)
+ {
+ subst_lhs = savestring (search_string);
+ subst_lhs_len = strlen (subst_lhs);
+ }
+ else
+ {
+ subst_lhs = (char *) NULL;
+ subst_lhs_len = 0;
+ }
+ }
+
+ /* If there is no lhs, the substitution can't succeed. */
+ if (subst_lhs_len == 0)
+ {
+ *ret_string = hist_error (string, starting_index, i, SUBST_FAILED);
+ free (result);
+ free (temp);
+ return -1;
+ }
+
+ FREE (subst_rhs);
+ subst_rhs = get_subst_pattern (string, &i, delimiter, 1, &subst_rhs_len);
+
+ /* If `&' appears in the rhs, it's supposed to be replaced
+ with the lhs. */
+ if (member ('&', subst_rhs))
+ postproc_subst_rhs ();
+ }
+ else
+ i += 2;
+
+ l_temp = strlen (temp);
+ /* Ignore impossible cases. */
+ if (subst_lhs_len > l_temp)
+ {
+ *ret_string = hist_error (string, starting_index, i, SUBST_FAILED);
+ free (result);
+ free (temp);
+ return (-1);
+ }
+
+ /* Find the first occurrence of THIS in TEMP. */
+ si = 0;
+ for (failed = 1; (si + subst_lhs_len) <= l_temp; si++)
+ if (STREQN (temp+si, subst_lhs, subst_lhs_len))
+ {
+ int len = subst_rhs_len - subst_lhs_len + l_temp;
+ new_event = xmalloc (1 + len);
+ strncpy (new_event, temp, si);
+ strncpy (new_event + si, subst_rhs, subst_rhs_len);
+ strncpy (new_event + si + subst_rhs_len,
+ temp + si + subst_lhs_len,
+ l_temp - (si + subst_lhs_len));
+ new_event[len] = '\0';
+ free (temp);
+ temp = new_event;
+
+ failed = 0;
+
+ if (substitute_globally)
+ {
+ si += subst_rhs_len;
+ l_temp = strlen (temp);
+ substitute_globally++;
+ continue;
+ }
+ else
+ break;
+ }
+
+ if (substitute_globally > 1)
+ {
+ substitute_globally = 0;
+ continue; /* don't want to increment i */
+ }
+
+ if (failed == 0)
+ continue; /* don't want to increment i */
+
+ *ret_string = hist_error (string, starting_index, i, SUBST_FAILED);
+ free (result);
+ free (temp);
+ return (-1);
+ }
+ }
+ i += 2;
+ }
+ /* Done with modfiers. */
+ /* Believe it or not, we have to back the pointer up by one. */
+ --i;
+
+ if (want_quotes)
+ {
+ char *x;
+
+ if (want_quotes == 'q')
+ x = single_quote (temp);
+ else if (want_quotes == 'x')
+ x = quote_breaks (temp);
+ else
+ x = savestring (temp);
+
+ free (temp);
+ temp = x;
+ }
+
+ n = strlen (temp);
+ if (n >= result_len)
+ result = xrealloc (result, n + 2);
+ strcpy (result, temp);
+ free (temp);
+
+ *end_index_ptr = i;
+ *ret_string = result;
+ return (print_only);
+}
+
+/* Expand the string STRING, placing the result into OUTPUT, a pointer
+ to a string. Returns:
+
+ -1) If there was an error in expansion.
+ 0) If no expansions took place (or, if the only change in
+ the text was the de-slashifying of the history expansion
+ character)
+ 1) If expansions did take place
+ 2) If the `p' modifier was given and the caller should print the result
+
+ If an error ocurred in expansion, then OUTPUT contains a descriptive
+ error message. */
+
+#define ADD_STRING(s) \
+ do \
+ { \
+ int sl = strlen (s); \
+ j += sl; \
+ if (j >= result_len) \
+ { \
+ while (j >= result_len) \
+ result_len += 128; \
+ result = xrealloc (result, result_len); \
+ } \
+ strcpy (result + j - sl, s); \
+ } \
+ while (0)
+
+#define ADD_CHAR(c) \
+ do \
+ { \
+ if (j >= result_len - 1) \
+ result = xrealloc (result, result_len += 64); \
+ result[j++] = c; \
+ result[j] = '\0'; \
+ } \
+ while (0)
+
+int
+history_expand (hstring, output)
+ char *hstring;
+ char **output;
+{
+ register int j;
+ int i, r, l, passc, cc, modified, eindex, only_printing;
+ char *string;
+
+ /* The output string, and its length. */
+ int result_len;
+ char *result;
+
+ /* Used when adding the string. */
+ char *temp;
+
+ /* Setting the history expansion character to 0 inhibits all
+ history expansion. */
+ if (history_expansion_char == 0)
+ {
+ *output = savestring (hstring);
+ return (0);
+ }
+
+ /* Prepare the buffer for printing error messages. */
+ result = xmalloc (result_len = 256);
+ result[0] = '\0';
+
+ only_printing = modified = 0;
+ l = strlen (hstring);
+
+ /* Grovel the string. Only backslash can quote the history escape
+ character. We also handle arg specifiers. */
+
+ /* Before we grovel forever, see if the history_expansion_char appears
+ anywhere within the text. */
+
+ /* The quick substitution character is a history expansion all right. That
+ is to say, "^this^that^" is equivalent to "!!:s^this^that^", and in fact,
+ that is the substitution that we do. */
+ if (hstring[0] == history_subst_char)
+ {
+ string = xmalloc (l + 5);
+
+ string[0] = string[1] = history_expansion_char;
+ string[2] = ':';
+ string[3] = 's';
+ strcpy (string + 4, hstring);
+ l += 4;
+ }
+ else
+ {
+ string = hstring;
+ /* If not quick substitution, still maybe have to do expansion. */
+
+ /* `!' followed by one of the characters in history_no_expand_chars
+ is NOT an expansion. */
+ for (i = 0; string[i]; i++)
+ {
+ cc = string[i + 1];
+ if (string[i] == history_expansion_char)
+ {
+ if (!cc || member (cc, history_no_expand_chars))
+ continue;
+#if defined (SHELL)
+ /* The shell uses ! as a pattern negation character
+ in globbing [...] expressions, so let those pass
+ without expansion. */
+ else if (i > 0 && (string[i - 1] == '[') &&
+ member (']', string + i + 1))
+ continue;
+ /* The shell uses ! as the indirect expansion character, so
+ let those expansions pass as well. */
+ else if (i > 1 && string[i - 1] == '{' && string[i - 2] == '$' &&
+ member ('}', string + i + 1))
+ continue;
+#endif /* SHELL */
+ else
+ break;
+ }
+ else if (history_quotes_inhibit_expansion && string[i] == '\'')
+ {
+ /* If this is bash, single quotes inhibit history expansion. */
+ i++;
+ hist_string_extract_single_quoted (string, &i);
+ }
+ else if (history_quotes_inhibit_expansion && string[i] == '\\')
+ {
+ /* If this is bash, allow backslashes to quote single
+ quotes and the history expansion character. */
+ if (cc == '\'' || cc == history_expansion_char)
+ i++;
+ }
+ }
+
+ if (string[i] != history_expansion_char)
+ {
+ free (result);
+ *output = savestring (string);
+ return (0);
+ }
+ }
+
+ /* Extract and perform the substitution. */
+ for (passc = i = j = 0; i < l; i++)
+ {
+ int tchar = string[i];
+
+ if (passc)
+ {
+ passc = 0;
+ ADD_CHAR (tchar);
+ continue;
+ }
+
+ if (tchar == history_expansion_char)
+ tchar = -3;
+
+ switch (tchar)
+ {
+ default:
+ ADD_CHAR (string[i]);
+ break;
+
+ case '\\':
+ passc++;
+ ADD_CHAR (tchar);
+ break;
+
+ case '\'':
+ {
+ /* If history_quotes_inhibit_expansion is set, single quotes
+ inhibit history expansion. */
+ if (history_quotes_inhibit_expansion)
+ {
+ int quote, slen;
+
+ quote = i++;
+ hist_string_extract_single_quoted (string, &i);
+
+ slen = i - quote + 2;
+ temp = xmalloc (slen);
+ strncpy (temp, string + quote, slen);
+ temp[slen - 1] = '\0';
+ ADD_STRING (temp);
+ free (temp);
+ }
+ else
+ ADD_CHAR (string[i]);
+ break;
+ }
+
+ case -3: /* history_expansion_char */
+ cc = string[i + 1];
+
+ /* If the history_expansion_char is followed by one of the
+ characters in history_no_expand_chars, then it is not a
+ candidate for expansion of any kind. */
+ if (member (cc, history_no_expand_chars))
+ {
+ ADD_CHAR (string[i]);
+ break;
+ }
+
+#if defined (NO_BANG_HASH_MODIFIERS)
+ /* There is something that is listed as a `word specifier' in csh
+ documentation which means `the expanded text to this point'.
+ That is not a word specifier, it is an event specifier. If we
+ don't want to allow modifiers with `!#', just stick the current
+ output line in again. */
+ if (cc == '#')
+ {
+ if (result)
+ {
+ temp = xmalloc (1 + strlen (result));
+ strcpy (temp, result);
+ ADD_STRING (temp);
+ free (temp);
+ }
+ i++;
+ break;
+ }
+#endif
+
+ r = history_expand_internal (string, i, &eindex, &temp, result);
+ if (r < 0)
+ {
+ *output = temp;
+ free (result);
+ if (string != hstring)
+ free (string);
+ return -1;
+ }
+ else
+ {
+ if (temp)
+ {
+ modified++;
+ if (*temp)
+ ADD_STRING (temp);
+ free (temp);
+ }
+ only_printing = r == 1;
+ i = eindex;
+ }
+ break;
+ }
+ }
+
+ *output = result;
+ if (string != hstring)
+ free (string);
+
+ if (only_printing)
+ {
+ add_history (result);
+ return (2);
+ }
+
+ return (modified != 0);
+}
+
+/* Return a consed string which is the word specified in SPEC, and found
+ in FROM. NULL is returned if there is no spec. The address of
+ ERROR_POINTER is returned if the word specified cannot be found.
+ CALLER_INDEX is the offset in SPEC to start looking; it is updated
+ to point to just after the last character parsed. */
+static char *
+get_history_word_specifier (spec, from, caller_index)
+ char *spec, *from;
+ int *caller_index;
+{
+ register int i = *caller_index;
+ int first, last;
+ int expecting_word_spec = 0;
+ char *result;
+
+ /* The range of words to return doesn't exist yet. */
+ first = last = 0;
+ result = (char *)NULL;
+
+ /* If we found a colon, then this *must* be a word specification. If
+ it isn't, then it is an error. */
+ if (spec[i] == ':')
+ {
+ i++;
+ expecting_word_spec++;
+ }
+
+ /* Handle special cases first. */
+
+ /* `%' is the word last searched for. */
+ if (spec[i] == '%')
+ {
+ *caller_index = i + 1;
+ return (search_match ? savestring (search_match) : savestring (""));
+ }
+
+ /* `*' matches all of the arguments, but not the command. */
+ if (spec[i] == '*')
+ {
+ *caller_index = i + 1;
+ result = history_arg_extract (1, '$', from);
+ return (result ? result : savestring (""));
+ }
+
+ /* `$' is last arg. */
+ if (spec[i] == '$')
+ {
+ *caller_index = i + 1;
+ return (history_arg_extract ('$', '$', from));
+ }
+
+ /* Try to get FIRST and LAST figured out. */
+
+ if (spec[i] == '-')
+ first = 0;
+ else if (spec[i] == '^')
+ first = 1;
+ else if (_rl_digit_p (spec[i]) && expecting_word_spec)
+ {
+ for (first = 0; _rl_digit_p (spec[i]); i++)
+ first = (first * 10) + _rl_digit_value (spec[i]);
+ }
+ else
+ return ((char *)NULL); /* no valid `first' for word specifier */
+
+ if (spec[i] == '^' || spec[i] == '*')
+ {
+ last = (spec[i] == '^') ? 1 : '$'; /* x* abbreviates x-$ */
+ i++;
+ }
+ else if (spec[i] != '-')
+ last = first;
+ else
+ {
+ i++;
+
+ if (_rl_digit_p (spec[i]))
+ {
+ for (last = 0; _rl_digit_p (spec[i]); i++)
+ last = (last * 10) + _rl_digit_value (spec[i]);
+ }
+ else if (spec[i] == '$')
+ {
+ i++;
+ last = '$';
+ }
+ else if (!spec[i] || spec[i] == ':') /* could be modifier separator */
+ last = -1; /* x- abbreviates x-$ omitting word `$' */
+ }
+
+ *caller_index = i;
+
+ if (last >= first || last == '$' || last < 0)
+ result = history_arg_extract (first, last, from);
+
+ return (result ? result : (char *)&error_pointer);
+}
+
+/* Extract the args specified, starting at FIRST, and ending at LAST.
+ The args are taken from STRING. If either FIRST or LAST is < 0,
+ then make that arg count from the right (subtract from the number of
+ tokens, so that FIRST = -1 means the next to last token on the line).
+ If LAST is `$' the last arg from STRING is used. */
+char *
+history_arg_extract (first, last, string)
+ int first, last;
+ char *string;
+{
+ register int i, len;
+ char *result;
+ int size, offset;
+ char **list;
+
+ /* XXX - think about making history_tokenize return a struct array,
+ each struct in array being a string and a length to avoid the
+ calls to strlen below. */
+ if ((list = history_tokenize (string)) == NULL)
+ return ((char *)NULL);
+
+ for (len = 0; list[len]; len++)
+ ;
+
+ if (last < 0)
+ last = len + last - 1;
+
+ if (first < 0)
+ first = len + first - 1;
+
+ if (last == '$')
+ last = len - 1;
+
+ if (first == '$')
+ first = len - 1;
+
+ last++;
+
+ if (first >= len || last > len || first < 0 || last < 0 || first > last)
+ result = ((char *)NULL);
+ else
+ {
+ for (size = 0, i = first; i < last; i++)
+ size += strlen (list[i]) + 1;
+ result = xmalloc (size + 1);
+ result[0] = '\0';
+
+ for (i = first, offset = 0; i < last; i++)
+ {
+ strcpy (result + offset, list[i]);
+ offset += strlen (list[i]);
+ if (i + 1 < last)
+ {
+ result[offset++] = ' ';
+ result[offset] = 0;
+ }
+ }
+ }
+
+ for (i = 0; i < len; i++)
+ free (list[i]);
+ free (list);
+
+ return (result);
+}
+
+#define slashify_in_quotes "\\`\"$"
+
+/* Parse STRING into tokens and return an array of strings. If WIND is
+ not -1 and INDP is not null, we also want the word surrounding index
+ WIND. The position in the returned array of strings is returned in
+ *INDP. */
+static char **
+history_tokenize_internal (string, wind, indp)
+ char *string;
+ int wind, *indp;
+{
+ char **result;
+ register int i, start, result_index, size;
+ int len, delimiter;
+
+ /* Get a token, and stuff it into RESULT. The tokens are split
+ exactly where the shell would split them. */
+ for (i = result_index = size = 0, result = (char **)NULL; string[i]; )
+ {
+ delimiter = 0;
+
+ /* Skip leading whitespace. */
+ for (; string[i] && whitespace (string[i]); i++)
+ ;
+ if (string[i] == 0 || string[i] == history_comment_char)
+ return (result);
+
+ start = i;
+
+ if (member (string[i], "()\n"))
+ {
+ i++;
+ goto got_token;
+ }
+
+ if (member (string[i], "<>;&|$"))
+ {
+ int peek = string[i + 1];
+
+ if (peek == string[i] && peek != '$')
+ {
+ if (peek == '<' && string[i + 2] == '-')
+ i++;
+ i += 2;
+ goto got_token;
+ }
+ else
+ {
+ if ((peek == '&' && (string[i] == '>' || string[i] == '<')) ||
+ ((peek == '>') && (string[i] == '&')) ||
+ ((peek == '(') && (string[i] == '$')))
+ {
+ i += 2;
+ goto got_token;
+ }
+ }
+ if (string[i] != '$')
+ {
+ i++;
+ goto got_token;
+ }
+ }
+
+ /* Get word from string + i; */
+
+ if (member (string[i], "\"'`"))
+ delimiter = string[i++];
+
+ for (; string[i]; i++)
+ {
+ if (string[i] == '\\' && string[i + 1] == '\n')
+ {
+ i++;
+ continue;
+ }
+
+ if (string[i] == '\\' && delimiter != '\'' &&
+ (delimiter != '"' || member (string[i], slashify_in_quotes)))
+ {
+ i++;
+ continue;
+ }
+
+ if (delimiter && string[i] == delimiter)
+ {
+ delimiter = 0;
+ continue;
+ }
+
+ if (!delimiter && (member (string[i], " \t\n;&()|<>")))
+ break;
+
+ if (!delimiter && member (string[i], "\"'`"))
+ delimiter = string[i];
+ }
+
+ got_token:
+
+ /* If we are looking for the word in which the character at a
+ particular index falls, remember it. */
+ if (indp && wind != -1 && wind >= start && wind < i)
+ *indp = result_index;
+
+ len = i - start;
+ if (result_index + 2 >= size)
+ result = (char **)xrealloc (result, ((size += 10) * sizeof (char *)));
+ result[result_index] = xmalloc (1 + len);
+ strncpy (result[result_index], string + start, len);
+ result[result_index][len] = '\0';
+ result[++result_index] = (char *)NULL;
+ }
+
+ return (result);
+}
+
+/* Return an array of tokens, much as the shell might. The tokens are
+ parsed out of STRING. */
+char **
+history_tokenize (string)
+ char *string;
+{
+ return (history_tokenize_internal (string, -1, (int *)NULL));
+}
+
+/* Find and return the word which contains the character at index IND
+ in the history line LINE. Used to save the word matched by the
+ last history !?string? search. */
+static char *
+history_find_word (line, ind)
+ char *line;
+ int ind;
+{
+ char **words, *s;
+ int i, wind;
+
+ words = history_tokenize_internal (line, ind, &wind);
+ if (wind == -1)
+ return ((char *)NULL);
+ s = words[wind];
+ for (i = 0; i < wind; i++)
+ free (words[i]);
+ for (i = wind + 1; words[i]; i++)
+ free (words[i]);
+ free (words);
+ return s;
+}
diff --git a/contrib/libreadline/histfile.c b/contrib/libreadline/histfile.c
new file mode 100644
index 0000000..355d46e
--- /dev/null
+++ b/contrib/libreadline/histfile.c
@@ -0,0 +1,324 @@
+/* histfile.c - functions to manipulate the history file. */
+
+/* Copyright (C) 1989, 1992 Free Software Foundation, Inc.
+
+ This file contains the GNU History Library (the Library), a set of
+ routines for managing the text of previously typed lines.
+
+ The Library is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 1, or (at your option)
+ any later version.
+
+ The Library is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ General Public License for more details.
+
+ The GNU General Public License is often shipped with GNU software, and
+ is generally kept in a file called COPYING or LICENSE. If you do not
+ have a copy of the license, write to the Free Software Foundation,
+ 675 Mass Ave, Cambridge, MA 02139, USA. */
+
+/* The goal is to make the implementation transparent, so that you
+ don't have to know what data types are used, just what functions
+ you can call. I think I have done that. */
+#define READLINE_LIBRARY
+
+#if defined (HAVE_CONFIG_H)
+# include <config.h>
+#endif
+
+#include <stdio.h>
+
+#include <sys/types.h>
+#include <sys/file.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+
+#if defined (HAVE_STDLIB_H)
+# include <stdlib.h>
+#else
+# include "ansi_stdlib.h"
+#endif /* HAVE_STDLIB_H */
+
+#if defined (HAVE_UNISTD_H)
+# include <unistd.h>
+#endif
+
+#if defined (HAVE_STRING_H)
+# include <string.h>
+#else
+# include <strings.h>
+#endif /* !HAVE_STRING_H */
+
+#include <errno.h>
+#if !defined (errno)
+extern int errno;
+#endif /* !errno */
+
+#include "history.h"
+#include "histlib.h"
+
+extern char *xmalloc (), *xrealloc ();
+
+/* Return the string that should be used in the place of this
+ filename. This only matters when you don't specify the
+ filename to read_history (), or write_history (). */
+static char *
+history_filename (filename)
+ char *filename;
+{
+ char *return_val, *home;
+ int home_len;
+
+ return_val = filename ? savestring (filename) : (char *)NULL;
+
+ if (return_val)
+ return (return_val);
+
+ home = getenv ("HOME");
+
+ if (home == 0)
+ {
+ home = ".";
+ home_len = 1;
+ }
+ else
+ home_len = strlen (home);
+
+ return_val = xmalloc (2 + home_len + 8); /* strlen(".history") == 8 */
+ strcpy (return_val, home);
+ return_val[home_len] = '/';
+ strcpy (return_val + home_len + 1, ".history");
+
+ return (return_val);
+}
+
+/* Add the contents of FILENAME to the history list, a line at a time.
+ If FILENAME is NULL, then read from ~/.history. Returns 0 if
+ successful, or errno if not. */
+int
+read_history (filename)
+ char *filename;
+{
+ return (read_history_range (filename, 0, -1));
+}
+
+/* Read a range of lines from FILENAME, adding them to the history list.
+ Start reading at the FROM'th line and end at the TO'th. If FROM
+ is zero, start at the beginning. If TO is less than FROM, read
+ until the end of the file. If FILENAME is NULL, then read from
+ ~/.history. Returns 0 if successful, or errno if not. */
+int
+read_history_range (filename, from, to)
+ char *filename;
+ int from, to;
+{
+ register int line_start, line_end;
+ char *input, *buffer = (char *)NULL;
+ int file, current_line;
+ struct stat finfo;
+
+ input = history_filename (filename);
+ file = open (input, O_RDONLY, 0666);
+
+ if ((file < 0) || (fstat (file, &finfo) == -1))
+ goto error_and_exit;
+
+ buffer = xmalloc ((int)finfo.st_size + 1);
+
+ if (read (file, buffer, finfo.st_size) != finfo.st_size)
+ {
+ error_and_exit:
+ if (file >= 0)
+ close (file);
+
+ FREE (input);
+ FREE (buffer);
+
+ return (errno);
+ }
+
+ close (file);
+
+ /* Set TO to larger than end of file if negative. */
+ if (to < 0)
+ to = finfo.st_size;
+
+ /* Start at beginning of file, work to end. */
+ line_start = line_end = current_line = 0;
+
+ /* Skip lines until we are at FROM. */
+ while (line_start < finfo.st_size && current_line < from)
+ {
+ for (line_end = line_start; line_end < finfo.st_size; line_end++)
+ if (buffer[line_end] == '\n')
+ {
+ current_line++;
+ line_start = line_end + 1;
+ if (current_line == from)
+ break;
+ }
+ }
+
+ /* If there are lines left to gobble, then gobble them now. */
+ for (line_end = line_start; line_end < finfo.st_size; line_end++)
+ if (buffer[line_end] == '\n')
+ {
+ buffer[line_end] = '\0';
+
+ if (buffer[line_start])
+ add_history (buffer + line_start);
+
+ current_line++;
+
+ if (current_line >= to)
+ break;
+
+ line_start = line_end + 1;
+ }
+
+ FREE (input);
+ FREE (buffer);
+
+ return (0);
+}
+
+/* Truncate the history file FNAME, leaving only LINES trailing lines.
+ If FNAME is NULL, then use ~/.history. */
+int
+history_truncate_file (fname, lines)
+ char *fname;
+ register int lines;
+{
+ register int i;
+ int file, chars_read;
+ char *buffer = (char *)NULL, *filename;
+ struct stat finfo;
+
+ filename = history_filename (fname);
+ file = open (filename, O_RDONLY, 0666);
+
+ if (file == -1 || fstat (file, &finfo) == -1)
+ goto truncate_exit;
+
+ buffer = xmalloc ((int)finfo.st_size + 1);
+ chars_read = read (file, buffer, finfo.st_size);
+ close (file);
+
+ if (chars_read <= 0)
+ goto truncate_exit;
+
+ /* Count backwards from the end of buffer until we have passed
+ LINES lines. */
+ for (i = chars_read - 1; lines && i; i--)
+ {
+ if (buffer[i] == '\n')
+ lines--;
+ }
+
+ /* If this is the first line, then the file contains exactly the
+ number of lines we want to truncate to, so we don't need to do
+ anything. It's the first line if we don't find a newline between
+ the current value of i and 0. Otherwise, write from the start of
+ this line until the end of the buffer. */
+ for ( ; i; i--)
+ if (buffer[i] == '\n')
+ {
+ i++;
+ break;
+ }
+
+ /* Write only if there are more lines in the file than we want to
+ truncate to. */
+ if (i && ((file = open (filename, O_WRONLY|O_TRUNC, 0666)) != -1))
+ {
+ write (file, buffer + i, finfo.st_size - i);
+ close (file);
+ }
+
+ truncate_exit:
+
+ FREE (buffer);
+
+ free (filename);
+ return 0;
+}
+
+/* Workhorse function for writing history. Writes NELEMENT entries
+ from the history list to FILENAME. OVERWRITE is non-zero if you
+ wish to replace FILENAME with the entries. */
+static int
+history_do_write (filename, nelements, overwrite)
+ char *filename;
+ int nelements, overwrite;
+{
+ register int i;
+ char *output = history_filename (filename);
+ int file, mode;
+
+ mode = overwrite ? O_WRONLY | O_CREAT | O_TRUNC : O_WRONLY | O_APPEND;
+
+ if ((file = open (output, mode, 0666)) == -1)
+ {
+ FREE (output);
+ return (errno);
+ }
+
+ if (nelements > history_length)
+ nelements = history_length;
+
+ /* Build a buffer of all the lines to write, and write them in one syscall.
+ Suggested by Peter Ho (peter@robosts.oxford.ac.uk). */
+ {
+ HIST_ENTRY **the_history; /* local */
+ register int j;
+ int buffer_size;
+ char *buffer;
+
+ the_history = history_list ();
+ /* Calculate the total number of bytes to write. */
+ for (buffer_size = 0, i = history_length - nelements; i < history_length; i++)
+ buffer_size += 1 + strlen (the_history[i]->line);
+
+ /* Allocate the buffer, and fill it. */
+ buffer = xmalloc (buffer_size);
+
+ for (j = 0, i = history_length - nelements; i < history_length; i++)
+ {
+ strcpy (buffer + j, the_history[i]->line);
+ j += strlen (the_history[i]->line);
+ buffer[j++] = '\n';
+ }
+
+ write (file, buffer, buffer_size);
+ free (buffer);
+ }
+
+ close (file);
+
+ FREE (output);
+
+ return (0);
+}
+
+/* Append NELEMENT entries to FILENAME. The entries appended are from
+ the end of the list minus NELEMENTs up to the end of the list. */
+int
+append_history (nelements, filename)
+ int nelements;
+ char *filename;
+{
+ return (history_do_write (filename, nelements, HISTORY_APPEND));
+}
+
+/* Overwrite FILENAME with the current history. If FILENAME is NULL,
+ then write the history list to ~/.history. Values returned
+ are as in read_history ().*/
+int
+write_history (filename)
+ char *filename;
+{
+ return (history_do_write (filename, history_length, HISTORY_OVERWRITE));
+}
diff --git a/contrib/libreadline/histlib.h b/contrib/libreadline/histlib.h
new file mode 100644
index 0000000..10a40d7
--- /dev/null
+++ b/contrib/libreadline/histlib.h
@@ -0,0 +1,81 @@
+/* histlib.h -- internal definitions for the history library. */
+/* Copyright (C) 1989, 1992 Free Software Foundation, Inc.
+
+ This file contains the GNU History Library (the Library), a set of
+ routines for managing the text of previously typed lines.
+
+ The Library is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 1, or (at your option)
+ any later version.
+
+ The Library is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ General Public License for more details.
+
+ The GNU General Public License is often shipped with GNU software, and
+ is generally kept in a file called COPYING or LICENSE. If you do not
+ have a copy of the license, write to the Free Software Foundation,
+ 675 Mass Ave, Cambridge, MA 02139, USA. */
+
+#if !defined (_HISTLIB_H_)
+#define _HISTLIB_H_
+
+/* Function pointers can be declared as (Function *)foo. */
+#if !defined (_FUNCTION_DEF)
+# define _FUNCTION_DEF
+typedef int Function ();
+typedef void VFunction ();
+typedef char *CPFunction ();
+typedef char **CPPFunction ();
+#endif /* _FUNCTION_DEF */
+
+#define STREQ(a, b) (((a)[0] == (b)[0]) && (strcmp ((a), (b)) == 0))
+#define STREQN(a, b, n) (((a)[0] == (b)[0]) && (strncmp ((a), (b), (n)) == 0))
+
+#ifndef savestring
+# ifndef strcpy
+extern char *strcpy ();
+# endif
+#define savestring(x) strcpy (xmalloc (1 + strlen (x)), (x))
+#endif
+
+#ifndef whitespace
+#define whitespace(c) (((c) == ' ') || ((c) == '\t'))
+#endif
+
+#ifndef _rl_digit_p
+#define _rl_digit_p(c) ((c) >= '0' && (c) <= '9')
+#endif
+
+#ifndef _rl_digit_value
+#define _rl_digit_value(c) ((c) - '0')
+#endif
+
+#ifndef member
+# ifndef strchr
+extern char *strchr ();
+# endif
+#define member(c, s) ((c) ? ((char *)strchr ((s), (c)) != (char *)NULL) : 0)
+#endif
+
+#ifndef FREE
+# define FREE(x) if (x) free (x)
+#endif
+
+/* Possible history errors passed to hist_error. */
+#define EVENT_NOT_FOUND 0
+#define BAD_WORD_SPEC 1
+#define SUBST_FAILED 2
+#define BAD_MODIFIER 3
+
+/* Possible definitions for history starting point specification. */
+#define ANCHORED_SEARCH 1
+#define NON_ANCHORED_SEARCH 0
+
+/* Possible definitions for what style of writing the history file we want. */
+#define HISTORY_APPEND 0
+#define HISTORY_OVERWRITE 1
+
+#endif /* !_HISTLIB_H_ */
diff --git a/contrib/libreadline/history.c b/contrib/libreadline/history.c
new file mode 100644
index 0000000..fb9d68e
--- /dev/null
+++ b/contrib/libreadline/history.c
@@ -0,0 +1,385 @@
+/* History.c -- standalone history library */
+
+/* Copyright (C) 1989, 1992 Free Software Foundation, Inc.
+
+ This file contains the GNU History Library (the Library), a set of
+ routines for managing the text of previously typed lines.
+
+ The Library is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 1, or (at your option)
+ any later version.
+
+ The Library is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ General Public License for more details.
+
+ The GNU General Public License is often shipped with GNU software, and
+ is generally kept in a file called COPYING or LICENSE. If you do not
+ have a copy of the license, write to the Free Software Foundation,
+ 675 Mass Ave, Cambridge, MA 02139, USA. */
+
+/* The goal is to make the implementation transparent, so that you
+ don't have to know what data types are used, just what functions
+ you can call. I think I have done that. */
+#define READLINE_LIBRARY
+
+#if defined (HAVE_CONFIG_H)
+# include <config.h>
+#endif
+
+#include <stdio.h>
+
+#if defined (HAVE_STDLIB_H)
+# include <stdlib.h>
+#else
+# include "ansi_stdlib.h"
+#endif /* HAVE_STDLIB_H */
+
+#if defined (HAVE_UNISTD_H)
+# include <unistd.h>
+#endif
+
+#if defined (HAVE_STRING_H)
+# include <string.h>
+#else
+# include <strings.h>
+#endif /* !HAVE_STRING_H */
+
+#include "history.h"
+#include "histlib.h"
+
+extern char *xmalloc (), *xrealloc ();
+
+/* The number of slots to increase the_history by. */
+#define DEFAULT_HISTORY_GROW_SIZE 50
+
+/* **************************************************************** */
+/* */
+/* History Functions */
+/* */
+/* **************************************************************** */
+
+/* An array of HIST_ENTRY. This is where we store the history. */
+static HIST_ENTRY **the_history = (HIST_ENTRY **)NULL;
+
+/* Non-zero means that we have enforced a limit on the amount of
+ history that we save. */
+static int history_stifled;
+
+/* If HISTORY_STIFLED is non-zero, then this is the maximum number of
+ entries to remember. */
+int max_input_history;
+
+/* The current location of the interactive history pointer. Just makes
+ life easier for outside callers. */
+int history_offset;
+
+/* The number of strings currently stored in the history list. */
+int history_length;
+
+/* The current number of slots allocated to the input_history. */
+static int history_size;
+
+/* The logical `base' of the history array. It defaults to 1. */
+int history_base = 1;
+
+/* Return the current HISTORY_STATE of the history. */
+HISTORY_STATE *
+history_get_history_state ()
+{
+ HISTORY_STATE *state;
+
+ state = (HISTORY_STATE *)xmalloc (sizeof (HISTORY_STATE));
+ state->entries = the_history;
+ state->offset = history_offset;
+ state->length = history_length;
+ state->size = history_size;
+ state->flags = 0;
+ if (history_stifled)
+ state->flags |= HS_STIFLED;
+
+ return (state);
+}
+
+/* Set the state of the current history array to STATE. */
+void
+history_set_history_state (state)
+ HISTORY_STATE *state;
+{
+ the_history = state->entries;
+ history_offset = state->offset;
+ history_length = state->length;
+ history_size = state->size;
+ if (state->flags & HS_STIFLED)
+ history_stifled = 1;
+}
+
+/* Begin a session in which the history functions might be used. This
+ initializes interactive variables. */
+void
+using_history ()
+{
+ history_offset = history_length;
+}
+
+/* Return the number of bytes that the primary history entries are using.
+ This just adds up the lengths of the_history->lines. */
+int
+history_total_bytes ()
+{
+ register int i, result;
+
+ result = 0;
+
+ for (i = 0; the_history && the_history[i]; i++)
+ result += strlen (the_history[i]->line);
+
+ return (result);
+}
+
+/* Returns the magic number which says what history element we are
+ looking at now. In this implementation, it returns history_offset. */
+int
+where_history ()
+{
+ return (history_offset);
+}
+
+/* Make the current history item be the one at POS, an absolute index.
+ Returns zero if POS is out of range, else non-zero. */
+int
+history_set_pos (pos)
+ int pos;
+{
+ if (pos > history_length || pos < 0 || !the_history)
+ return (0);
+ history_offset = pos;
+ return (1);
+}
+
+/* Return the current history array. The caller has to be carefull, since this
+ is the actual array of data, and could be bashed or made corrupt easily.
+ The array is terminated with a NULL pointer. */
+HIST_ENTRY **
+history_list ()
+{
+ return (the_history);
+}
+
+/* Return the history entry at the current position, as determined by
+ history_offset. If there is no entry there, return a NULL pointer. */
+HIST_ENTRY *
+current_history ()
+{
+ return ((history_offset == history_length) || the_history == 0)
+ ? (HIST_ENTRY *)NULL
+ : the_history[history_offset];
+}
+
+/* Back up history_offset to the previous history entry, and return
+ a pointer to that entry. If there is no previous entry then return
+ a NULL pointer. */
+HIST_ENTRY *
+previous_history ()
+{
+ return history_offset ? the_history[--history_offset] : (HIST_ENTRY *)NULL;
+}
+
+/* Move history_offset forward to the next history entry, and return
+ a pointer to that entry. If there is no next entry then return a
+ NULL pointer. */
+HIST_ENTRY *
+next_history ()
+{
+ return (history_offset == history_length) ? (HIST_ENTRY *)NULL : the_history[++history_offset];
+}
+
+/* Return the history entry which is logically at OFFSET in the history array.
+ OFFSET is relative to history_base. */
+HIST_ENTRY *
+history_get (offset)
+ int offset;
+{
+ int local_index;
+
+ local_index = offset - history_base;
+ return (local_index >= history_length || local_index < 0 || !the_history)
+ ? (HIST_ENTRY *)NULL
+ : the_history[local_index];
+}
+
+/* Place STRING at the end of the history list. The data field
+ is set to NULL. */
+void
+add_history (string)
+ char *string;
+{
+ HIST_ENTRY *temp;
+
+ if (history_stifled && (history_length == max_input_history))
+ {
+ register int i;
+
+ /* If the history is stifled, and history_length is zero,
+ and it equals max_input_history, we don't save items. */
+ if (history_length == 0)
+ return;
+
+ /* If there is something in the slot, then remove it. */
+ if (the_history[0])
+ {
+ free (the_history[0]->line);
+ free (the_history[0]);
+ }
+
+ /* Copy the rest of the entries, moving down one slot. */
+ for (i = 0; i < history_length; i++)
+ the_history[i] = the_history[i + 1];
+
+ history_base++;
+ }
+ else
+ {
+ if (history_size == 0)
+ {
+ history_size = DEFAULT_HISTORY_GROW_SIZE;
+ the_history = (HIST_ENTRY **)xmalloc (history_size * sizeof (HIST_ENTRY *));
+ history_length = 1;
+ }
+ else
+ {
+ if (history_length == (history_size - 1))
+ {
+ history_size += DEFAULT_HISTORY_GROW_SIZE;
+ the_history = (HIST_ENTRY **)
+ xrealloc (the_history, history_size * sizeof (HIST_ENTRY *));
+ }
+ history_length++;
+ }
+ }
+
+ temp = (HIST_ENTRY *)xmalloc (sizeof (HIST_ENTRY));
+ temp->line = savestring (string);
+ temp->data = (char *)NULL;
+
+ the_history[history_length] = (HIST_ENTRY *)NULL;
+ the_history[history_length - 1] = temp;
+}
+
+/* Make the history entry at WHICH have LINE and DATA. This returns
+ the old entry so you can dispose of the data. In the case of an
+ invalid WHICH, a NULL pointer is returned. */
+HIST_ENTRY *
+replace_history_entry (which, line, data)
+ int which;
+ char *line;
+ char *data;
+{
+ HIST_ENTRY *temp = (HIST_ENTRY *)xmalloc (sizeof (HIST_ENTRY));
+ HIST_ENTRY *old_value;
+
+ if (which >= history_length)
+ return ((HIST_ENTRY *)NULL);
+
+ old_value = the_history[which];
+
+ temp->line = savestring (line);
+ temp->data = data;
+ the_history[which] = temp;
+
+ return (old_value);
+}
+
+/* Remove history element WHICH from the history. The removed
+ element is returned to you so you can free the line, data,
+ and containing structure. */
+HIST_ENTRY *
+remove_history (which)
+ int which;
+{
+ HIST_ENTRY *return_value;
+
+ if (which >= history_length || !history_length)
+ return_value = (HIST_ENTRY *)NULL;
+ else
+ {
+ register int i;
+ return_value = the_history[which];
+
+ for (i = which; i < history_length; i++)
+ the_history[i] = the_history[i + 1];
+
+ history_length--;
+ }
+
+ return (return_value);
+}
+
+/* Stifle the history list, remembering only MAX number of lines. */
+void
+stifle_history (max)
+ int max;
+{
+ if (max < 0)
+ max = 0;
+
+ if (history_length > max)
+ {
+ register int i, j;
+
+ /* This loses because we cannot free the data. */
+ for (i = 0, j = history_length - max; i < j; i++)
+ {
+ free (the_history[i]->line);
+ free (the_history[i]);
+ }
+
+ history_base = i;
+ for (j = 0, i = history_length - max; j < max; i++, j++)
+ the_history[j] = the_history[i];
+ the_history[j] = (HIST_ENTRY *)NULL;
+ history_length = j;
+ }
+
+ history_stifled = 1;
+ max_input_history = max;
+}
+
+/* Stop stifling the history. This returns the previous amount the
+ history was stifled by. The value is positive if the history was
+ stifled, negative if it wasn't. */
+int
+unstifle_history ()
+{
+ if (history_stifled)
+ {
+ history_stifled = 0;
+ return (-max_input_history);
+ }
+
+ return (max_input_history);
+}
+
+int
+history_is_stifled ()
+{
+ return (history_stifled);
+}
+
+void
+clear_history ()
+{
+ register int i;
+
+ /* This loses because we cannot free the data. */
+ for (i = 0; i < history_length; i++)
+ {
+ free (the_history[i]->line);
+ free (the_history[i]);
+ the_history[i] = (HIST_ENTRY *)NULL;
+ }
+
+ history_offset = history_length = 0;
+}
diff --git a/contrib/libreadline/history.h b/contrib/libreadline/history.h
new file mode 100644
index 0000000..17ec877
--- /dev/null
+++ b/contrib/libreadline/history.h
@@ -0,0 +1,210 @@
+/* History.h -- the names of functions that you can call in history. */
+/* Copyright (C) 1989, 1992 Free Software Foundation, Inc.
+
+ This file contains the GNU History Library (the Library), a set of
+ routines for managing the text of previously typed lines.
+
+ The Library is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 1, or (at your option)
+ any later version.
+
+ The Library is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ General Public License for more details.
+
+ The GNU General Public License is often shipped with GNU software, and
+ is generally kept in a file called COPYING or LICENSE. If you do not
+ have a copy of the license, write to the Free Software Foundation,
+ 675 Mass Ave, Cambridge, MA 02139, USA. */
+
+#ifndef _HISTORY_H_
+#define _HISTORY_H_
+
+/* The structure used to store a history entry. */
+typedef struct _hist_entry {
+ char *line;
+ char *data;
+} HIST_ENTRY;
+
+/* A structure used to pass the current state of the history stuff around. */
+typedef struct _hist_state {
+ HIST_ENTRY **entries; /* Pointer to the entries themselves. */
+ int offset; /* The location pointer within this array. */
+ int length; /* Number of elements within this array. */
+ int size; /* Number of slots allocated to this array. */
+ int flags;
+} HISTORY_STATE;
+
+/* Flag values for the `flags' member of HISTORY_STATE. */
+#define HS_STIFLED 0x01
+
+/* Initialization and state management. */
+
+/* Begin a session in which the history functions might be used. This
+ just initializes the interactive variables. */
+extern void using_history ();
+
+/* Return the current HISTORY_STATE of the history. */
+extern HISTORY_STATE *history_get_history_state ();
+
+/* Set the state of the current history array to STATE. */
+extern void history_set_history_state ();
+
+/* Manage the history list. */
+
+/* Place STRING at the end of the history list.
+ The associated data field (if any) is set to NULL. */
+extern void add_history ();
+
+/* A reasonably useless function, only here for completeness. WHICH
+ is the magic number that tells us which element to delete. The
+ elements are numbered from 0. */
+extern HIST_ENTRY *remove_history ();
+
+/* Make the history entry at WHICH have LINE and DATA. This returns
+ the old entry so you can dispose of the data. In the case of an
+ invalid WHICH, a NULL pointer is returned. */
+extern HIST_ENTRY *replace_history_entry ();
+
+/* Clear the history list and start over. */
+extern void clear_history ();
+
+/* Stifle the history list, remembering only MAX number of entries. */
+extern void stifle_history ();
+
+/* Stop stifling the history. This returns the previous amount the
+ history was stifled by. The value is positive if the history was
+ stifled, negative if it wasn't. */
+extern int unstifle_history ();
+
+/* Return 1 if the history is stifled, 0 if it is not. */
+extern int history_is_stifled ();
+
+/* Information about the history list. */
+
+/* Return a NULL terminated array of HIST_ENTRY which is the current input
+ history. Element 0 of this list is the beginning of time. If there
+ is no history, return NULL. */
+extern HIST_ENTRY **history_list ();
+
+/* Returns the number which says what history element we are now
+ looking at. */
+extern int where_history ();
+
+/* Return the history entry at the current position, as determined by
+ history_offset. If there is no entry there, return a NULL pointer. */
+HIST_ENTRY *current_history ();
+
+/* Return the history entry which is logically at OFFSET in the history
+ array. OFFSET is relative to history_base. */
+extern HIST_ENTRY *history_get ();
+
+/* Return the number of bytes that the primary history entries are using.
+ This just adds up the lengths of the_history->lines. */
+extern int history_total_bytes ();
+
+/* Moving around the history list. */
+
+/* Set the position in the history list to POS. */
+int history_set_pos ();
+
+/* Back up history_offset to the previous history entry, and return
+ a pointer to that entry. If there is no previous entry, return
+ a NULL pointer. */
+extern HIST_ENTRY *previous_history ();
+
+/* Move history_offset forward to the next item in the input_history,
+ and return the a pointer to that entry. If there is no next entry,
+ return a NULL pointer. */
+extern HIST_ENTRY *next_history ();
+
+/* Searching the history list. */
+
+/* Search the history for STRING, starting at history_offset.
+ If DIRECTION < 0, then the search is through previous entries,
+ else through subsequent. If the string is found, then
+ current_history () is the history entry, and the value of this function
+ is the offset in the line of that history entry that the string was
+ found in. Otherwise, nothing is changed, and a -1 is returned. */
+extern int history_search ();
+
+/* Search the history for STRING, starting at history_offset.
+ The search is anchored: matching lines must begin with string. */
+extern int history_search_prefix ();
+
+/* Search for STRING in the history list, starting at POS, an
+ absolute index into the list. DIR, if negative, says to search
+ backwards from POS, else forwards.
+ Returns the absolute index of the history element where STRING
+ was found, or -1 otherwise. */
+extern int history_search_pos ();
+
+/* Managing the history file. */
+
+/* Add the contents of FILENAME to the history list, a line at a time.
+ If FILENAME is NULL, then read from ~/.history. Returns 0 if
+ successful, or errno if not. */
+extern int read_history ();
+
+/* Read a range of lines from FILENAME, adding them to the history list.
+ Start reading at the FROM'th line and end at the TO'th. If FROM
+ is zero, start at the beginning. If TO is less than FROM, read
+ until the end of the file. If FILENAME is NULL, then read from
+ ~/.history. Returns 0 if successful, or errno if not. */
+extern int read_history_range ();
+
+/* Write the current history to FILENAME. If FILENAME is NULL,
+ then write the history list to ~/.history. Values returned
+ are as in read_history (). */
+extern int write_history ();
+
+/* Append NELEMENT entries to FILENAME. The entries appended are from
+ the end of the list minus NELEMENTs up to the end of the list. */
+int append_history ();
+
+/* Truncate the history file, leaving only the last NLINES lines. */
+extern int history_truncate_file ();
+
+/* History expansion. */
+
+/* Expand the string STRING, placing the result into OUTPUT, a pointer
+ to a string. Returns:
+
+ 0) If no expansions took place (or, if the only change in
+ the text was the de-slashifying of the history expansion
+ character)
+ 1) If expansions did take place
+ -1) If there was an error in expansion.
+ 2) If the returned line should just be printed.
+
+ If an error ocurred in expansion, then OUTPUT contains a descriptive
+ error message. */
+extern int history_expand ();
+
+/* Extract a string segment consisting of the FIRST through LAST
+ arguments present in STRING. Arguments are broken up as in
+ the shell. */
+extern char *history_arg_extract ();
+
+/* Return the text of the history event beginning at the current
+ offset into STRING. */
+extern char *get_history_event ();
+
+/* Return an array of tokens, much as the shell might. The tokens are
+ parsed out of STRING. */
+extern char **history_tokenize ();
+
+/* Exported history variables. */
+extern int history_base;
+extern int history_length;
+extern int max_input_history;
+extern char history_expansion_char;
+extern char history_subst_char;
+extern char history_comment_char;
+extern char *history_no_expand_chars;
+extern char *history_search_delimiter_chars;
+extern int history_quotes_inhibit_expansion;
+
+#endif /* !_HISTORY_H_ */
diff --git a/contrib/libreadline/histsearch.c b/contrib/libreadline/histsearch.c
new file mode 100644
index 0000000..a72a68b
--- /dev/null
+++ b/contrib/libreadline/histsearch.c
@@ -0,0 +1,197 @@
+/* histsearch.c -- searching the history list. */
+
+/* Copyright (C) 1989, 1992 Free Software Foundation, Inc.
+
+ This file contains the GNU History Library (the Library), a set of
+ routines for managing the text of previously typed lines.
+
+ The Library is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 1, or (at your option)
+ any later version.
+
+ The Library is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ General Public License for more details.
+
+ The GNU General Public License is often shipped with GNU software, and
+ is generally kept in a file called COPYING or LICENSE. If you do not
+ have a copy of the license, write to the Free Software Foundation,
+ 675 Mass Ave, Cambridge, MA 02139, USA. */
+
+#define READLINE_LIBRARY
+
+#if defined (HAVE_CONFIG_H)
+# include <config.h>
+#endif
+
+#include <stdio.h>
+#if defined (HAVE_STDLIB_H)
+# include <stdlib.h>
+#else
+# include "ansi_stdlib.h"
+#endif /* HAVE_STDLIB_H */
+#if defined (HAVE_UNISTD_H)
+# include <unistd.h>
+#endif
+#if defined (HAVE_STRING_H)
+# include <string.h>
+#else
+# include <strings.h>
+#endif /* !HAVE_STRING_H */
+
+#include "history.h"
+#include "histlib.h"
+
+/* Variables imported from other history library files. */
+extern int history_offset;
+
+/* The list of alternate characters that can delimit a history search
+ string. */
+char *history_search_delimiter_chars = (char *)NULL;
+
+/* Search the history for STRING, starting at history_offset.
+ If DIRECTION < 0, then the search is through previous entries, else
+ through subsequent. If ANCHORED is non-zero, the string must
+ appear at the beginning of a history line, otherwise, the string
+ may appear anywhere in the line. If the string is found, then
+ current_history () is the history entry, and the value of this
+ function is the offset in the line of that history entry that the
+ string was found in. Otherwise, nothing is changed, and a -1 is
+ returned. */
+
+static int
+history_search_internal (string, direction, anchored)
+ char *string;
+ int direction, anchored;
+{
+ register int i, reverse;
+ register char *line;
+ register int line_index;
+ int string_len;
+ HIST_ENTRY **the_history; /* local */
+
+ i = history_offset;
+ reverse = (direction < 0);
+
+ /* Take care of trivial cases first. */
+ if (string == 0 || *string == '\0')
+ return (-1);
+
+ if (!history_length || ((i == history_length) && !reverse))
+ return (-1);
+
+ if (reverse && (i == history_length))
+ i--;
+
+#define NEXT_LINE() do { if (reverse) i--; else i++; } while (0)
+
+ the_history = history_list ();
+ string_len = strlen (string);
+ while (1)
+ {
+ /* Search each line in the history list for STRING. */
+
+ /* At limit for direction? */
+ if ((reverse && i < 0) || (!reverse && i == history_length))
+ return (-1);
+
+ line = the_history[i]->line;
+ line_index = strlen (line);
+
+ /* If STRING is longer than line, no match. */
+ if (string_len > line_index)
+ {
+ NEXT_LINE ();
+ continue;
+ }
+
+ /* Handle anchored searches first. */
+ if (anchored == ANCHORED_SEARCH)
+ {
+ if (STREQN (string, line, string_len))
+ {
+ history_offset = i;
+ return (0);
+ }
+
+ NEXT_LINE ();
+ continue;
+ }
+
+ /* Do substring search. */
+ if (reverse)
+ {
+ line_index -= string_len;
+
+ while (line_index >= 0)
+ {
+ if (STREQN (string, line + line_index, string_len))
+ {
+ history_offset = i;
+ return (line_index);
+ }
+ line_index--;
+ }
+ }
+ else
+ {
+ register int limit;
+
+ limit = line_index - string_len + 1;
+ line_index = 0;
+
+ while (line_index < limit)
+ {
+ if (STREQN (string, line + line_index, string_len))
+ {
+ history_offset = i;
+ return (line_index);
+ }
+ line_index++;
+ }
+ }
+ NEXT_LINE ();
+ }
+}
+
+/* Do a non-anchored search for STRING through the history in DIRECTION. */
+int
+history_search (string, direction)
+ char *string;
+ int direction;
+{
+ return (history_search_internal (string, direction, NON_ANCHORED_SEARCH));
+}
+
+/* Do an anchored search for string through the history in DIRECTION. */
+int
+history_search_prefix (string, direction)
+ char *string;
+ int direction;
+{
+ return (history_search_internal (string, direction, ANCHORED_SEARCH));
+}
+
+/* Search for STRING in the history list. DIR is < 0 for searching
+ backwards. POS is an absolute index into the history list at
+ which point to begin searching. */
+int
+history_search_pos (string, dir, pos)
+ char *string;
+ int dir, pos;
+{
+ int ret, old;
+
+ old = where_history ();
+ history_set_pos (pos);
+ if (history_search (string, dir) == -1)
+ {
+ history_set_pos (old);
+ return (-1);
+ }
+ ret = where_history ();
+ history_set_pos (old);
+ return ret;
+}
diff --git a/contrib/libreadline/input.c b/contrib/libreadline/input.c
new file mode 100644
index 0000000..7e3c0fe
--- /dev/null
+++ b/contrib/libreadline/input.c
@@ -0,0 +1,449 @@
+/* input.c -- character input functions for readline. */
+
+/* Copyright (C) 1994 Free Software Foundation, Inc.
+
+ This file is part of the GNU Readline Library, a library for
+ reading lines of text with interactive input and history editing.
+
+ The GNU Readline Library is free software; you can redistribute it
+ and/or modify it under the terms of the GNU General Public License
+ as published by the Free Software Foundation; either version 2, or
+ (at your option) any later version.
+
+ The GNU Readline Library is distributed in the hope that it will be
+ useful, but WITHOUT ANY WARRANTY; without even the implied warranty
+ of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ The GNU General Public License is often shipped with GNU software, and
+ is generally kept in a file called COPYING or LICENSE. If you do not
+ have a copy of the license, write to the Free Software Foundation,
+ 675 Mass Ave, Cambridge, MA 02139, USA. */
+#define READLINE_LIBRARY
+
+#if defined (HAVE_CONFIG_H)
+# include <config.h>
+#endif
+
+#include <sys/types.h>
+#include <fcntl.h>
+#if defined (HAVE_SYS_FILE_H)
+# include <sys/file.h>
+#endif /* HAVE_SYS_FILE_H */
+
+#if defined (HAVE_UNISTD_H)
+# include <unistd.h>
+#endif /* HAVE_UNISTD_H */
+
+#if defined (HAVE_STDLIB_H)
+# include <stdlib.h>
+#else
+# include "ansi_stdlib.h"
+#endif /* HAVE_STDLIB_H */
+
+#if defined (HAVE_SELECT)
+# if !defined (HAVE_SYS_SELECT_H) || !defined (M_UNIX)
+# include <sys/time.h>
+# endif
+#endif /* HAVE_SELECT */
+#if defined (HAVE_SYS_SELECT_H)
+# include <sys/select.h>
+#endif
+
+#if defined (FIONREAD_IN_SYS_IOCTL)
+# include <sys/ioctl.h>
+#endif
+
+#include <stdio.h>
+#include <errno.h>
+
+#if !defined (errno)
+extern int errno;
+#endif /* !errno */
+
+/* System-specific feature definitions and include files. */
+#include "rldefs.h"
+
+/* Some standard library routines. */
+#include "readline.h"
+
+/* What kind of non-blocking I/O do we have? */
+#if !defined (O_NDELAY) && defined (O_NONBLOCK)
+# define O_NDELAY O_NONBLOCK /* Posix style */
+#endif
+
+/* Functions imported from other files in the library. */
+extern char *xmalloc (), *xrealloc ();
+
+/* Variables and functions from macro.c. */
+extern void _rl_add_macro_char ();
+extern void _rl_with_macro_input ();
+extern int _rl_next_macro_key ();
+extern int _rl_defining_kbd_macro;
+
+#if defined (VI_MODE)
+extern void _rl_vi_set_last ();
+extern int _rl_vi_textmod_command ();
+#endif /* VI_MODE */
+
+extern FILE *rl_instream, *rl_outstream;
+extern Function *rl_last_func;
+extern int rl_key_sequence_length;
+extern int rl_pending_input;
+extern int rl_editing_mode;
+
+extern Keymap _rl_keymap;
+
+extern int _rl_convert_meta_chars_to_ascii;
+
+#if defined (__GO32__)
+# include <pc.h>
+#endif /* __GO32__ */
+
+/* Non-null means it is a pointer to a function to run while waiting for
+ character input. */
+Function *rl_event_hook = (Function *)NULL;
+
+Function *rl_getc_function = rl_getc;
+
+/* **************************************************************** */
+/* */
+/* Character Input Buffering */
+/* */
+/* **************************************************************** */
+
+static int pop_index, push_index;
+static unsigned char ibuffer[512];
+static int ibuffer_len = sizeof (ibuffer) - 1;
+
+#define any_typein (push_index != pop_index)
+
+int
+_rl_any_typein ()
+{
+ return any_typein;
+}
+
+/* Add KEY to the buffer of characters to be read. */
+int
+rl_stuff_char (key)
+ int key;
+{
+ if (key == EOF)
+ {
+ key = NEWLINE;
+ rl_pending_input = EOF;
+ }
+ ibuffer[push_index++] = key;
+ if (push_index >= ibuffer_len)
+ push_index = 0;
+ return push_index;
+}
+
+/* Make C be the next command to be executed. */
+int
+rl_execute_next (c)
+ int c;
+{
+ rl_pending_input = c;
+ return 0;
+}
+
+/* Return the amount of space available in the
+ buffer for stuffing characters. */
+static int
+ibuffer_space ()
+{
+ if (pop_index > push_index)
+ return (pop_index - push_index);
+ else
+ return (ibuffer_len - (push_index - pop_index));
+}
+
+/* Get a key from the buffer of characters to be read.
+ Return the key in KEY.
+ Result is KEY if there was a key, or 0 if there wasn't. */
+static int
+rl_get_char (key)
+ int *key;
+{
+ if (push_index == pop_index)
+ return (0);
+
+ *key = ibuffer[pop_index++];
+
+ if (pop_index >= ibuffer_len)
+ pop_index = 0;
+
+ return (1);
+}
+
+/* Stuff KEY into the *front* of the input buffer.
+ Returns non-zero if successful, zero if there is
+ no space left in the buffer. */
+static int
+rl_unget_char (key)
+ int key;
+{
+ if (ibuffer_space ())
+ {
+ pop_index--;
+ if (pop_index < 0)
+ pop_index = ibuffer_len - 1;
+ ibuffer[pop_index] = key;
+ return (1);
+ }
+ return (0);
+}
+
+/* If a character is available to be read, then read it
+ and stuff it into IBUFFER. Otherwise, just return. */
+static void
+rl_gather_tyi ()
+{
+#if defined (__GO32__)
+ char input;
+
+ if (isatty (0) && kbhit () && ibuffer_space ())
+ {
+ int i;
+ i = (*rl_getc_function) (rl_instream);
+ rl_stuff_char (i);
+ }
+#else /* !__GO32__ */
+
+ int tty;
+ register int tem, result;
+ int chars_avail;
+ char input;
+#if defined(HAVE_SELECT)
+ fd_set readfds, exceptfds;
+ struct timeval timeout;
+#endif
+
+ tty = fileno (rl_instream);
+
+#if defined (HAVE_SELECT)
+ FD_ZERO (&readfds);
+ FD_ZERO (&exceptfds);
+ FD_SET (tty, &readfds);
+ FD_SET (tty, &exceptfds);
+ timeout.tv_sec = 0;
+ timeout.tv_usec = 100000; /* 0.1 seconds */
+ if (select (tty + 1, &readfds, (fd_set *)NULL, &exceptfds, &timeout) <= 0)
+ return; /* Nothing to read. */
+#endif
+
+ result = -1;
+#if defined (FIONREAD)
+ result = ioctl (tty, FIONREAD, &chars_avail);
+#endif
+
+#if defined (O_NDELAY)
+ if (result == -1)
+ {
+ tem = fcntl (tty, F_GETFL, 0);
+
+ fcntl (tty, F_SETFL, (tem | O_NDELAY));
+ chars_avail = read (tty, &input, 1);
+
+ fcntl (tty, F_SETFL, tem);
+ if (chars_avail == -1 && errno == EAGAIN)
+ return;
+ }
+#endif /* O_NDELAY */
+
+ /* If there's nothing available, don't waste time trying to read
+ something. */
+ if (chars_avail <= 0)
+ return;
+
+ tem = ibuffer_space ();
+
+ if (chars_avail > tem)
+ chars_avail = tem;
+
+ /* One cannot read all of the available input. I can only read a single
+ character at a time, or else programs which require input can be
+ thwarted. If the buffer is larger than one character, I lose.
+ Damn! */
+ if (tem < ibuffer_len)
+ chars_avail = 0;
+
+ if (result != -1)
+ {
+ while (chars_avail--)
+ rl_stuff_char ((*rl_getc_function) (rl_instream));
+ }
+ else
+ {
+ if (chars_avail)
+ rl_stuff_char (input);
+ }
+#endif /* !__GO32__ */
+}
+
+/* Is there input available to be read on the readline input file
+ descriptor? Only works if the system has select(2) or FIONREAD. */
+int
+_rl_input_available ()
+{
+#if defined(HAVE_SELECT)
+ fd_set readfds, exceptfds;
+ struct timeval timeout;
+#endif
+#if defined(FIONREAD)
+ int chars_avail;
+#endif
+ int tty;
+
+ tty = fileno (rl_instream);
+
+#if defined (HAVE_SELECT)
+ FD_ZERO (&readfds);
+ FD_ZERO (&exceptfds);
+ FD_SET (tty, &readfds);
+ FD_SET (tty, &exceptfds);
+ timeout.tv_sec = 0;
+ timeout.tv_usec = 100000; /* 0.1 seconds */
+ return (select (tty + 1, &readfds, (fd_set *)NULL, &exceptfds, &timeout) > 0);
+#endif
+
+#if defined (FIONREAD)
+ if (ioctl (tty, FIONREAD, &chars_avail) == 0)
+ return (chars_avail);
+#endif
+
+ return 0;
+}
+
+void
+_rl_insert_typein (c)
+ int c;
+{
+ int key, t, i;
+ char *string;
+
+ i = key = 0;
+ string = xmalloc (ibuffer_len + 1);
+ string[i++] = (char) c;
+
+ while ((t = rl_get_char (&key)) &&
+ _rl_keymap[key].type == ISFUNC &&
+ _rl_keymap[key].function == rl_insert)
+ string[i++] = key;
+
+ if (t)
+ rl_unget_char (key);
+
+ string[i] = '\0';
+ rl_insert_text (string);
+ free (string);
+}
+
+/* **************************************************************** */
+/* */
+/* Character Input */
+/* */
+/* **************************************************************** */
+
+/* Read a key, including pending input. */
+int
+rl_read_key ()
+{
+ int c;
+
+ rl_key_sequence_length++;
+
+ if (rl_pending_input)
+ {
+ c = rl_pending_input;
+ rl_pending_input = 0;
+ }
+ else
+ {
+ /* If input is coming from a macro, then use that. */
+ if (c = _rl_next_macro_key ())
+ return (c);
+
+ /* If the user has an event function, then call it periodically. */
+ if (rl_event_hook)
+ {
+ while (rl_event_hook && rl_get_char (&c) == 0)
+ {
+ (*rl_event_hook) ();
+ rl_gather_tyi ();
+ }
+ }
+ else
+ {
+ if (rl_get_char (&c) == 0)
+ c = (*rl_getc_function) (rl_instream);
+ }
+ }
+
+ return (c);
+}
+
+int
+rl_getc (stream)
+ FILE *stream;
+{
+ int result, flags;
+ unsigned char c;
+
+#if defined (__GO32__)
+ if (isatty (0))
+ return (getkey () & 0x7F);
+#endif /* __GO32__ */
+
+ while (1)
+ {
+ result = read (fileno (stream), &c, sizeof (unsigned char));
+
+ if (result == sizeof (unsigned char))
+ return (c);
+
+ /* If zero characters are returned, then the file that we are
+ reading from is empty! Return EOF in that case. */
+ if (result == 0)
+ return (EOF);
+
+#if defined (EWOULDBLOCK)
+ if (errno == EWOULDBLOCK)
+ {
+ if ((flags = fcntl (fileno (stream), F_GETFL, 0)) < 0)
+ return (EOF);
+ if (flags & O_NDELAY)
+ {
+ flags &= ~O_NDELAY;
+ fcntl (fileno (stream), F_SETFL, flags);
+ continue;
+ }
+ continue;
+ }
+#endif /* EWOULDBLOCK */
+
+#if defined (_POSIX_VERSION) && defined (EAGAIN) && defined (O_NONBLOCK)
+ if (errno == EAGAIN)
+ {
+ if ((flags = fcntl (fileno (stream), F_GETFL, 0)) < 0)
+ return (EOF);
+ if (flags & O_NONBLOCK)
+ {
+ flags &= ~O_NONBLOCK;
+ fcntl (fileno (stream), F_SETFL, flags);
+ continue;
+ }
+ }
+#endif /* _POSIX_VERSION && EAGAIN && O_NONBLOCK */
+
+#if !defined (__GO32__)
+ /* If the error that we received was SIGINT, then try again,
+ this is simply an interrupted system call to read ().
+ Otherwise, some error ocurred, also signifying EOF. */
+ if (errno != EINTR)
+ return (EOF);
+#endif /* !__GO32__ */
+ }
+}
diff --git a/contrib/libreadline/isearch.c b/contrib/libreadline/isearch.c
new file mode 100644
index 0000000..fa60fa4
--- /dev/null
+++ b/contrib/libreadline/isearch.c
@@ -0,0 +1,410 @@
+/* **************************************************************** */
+/* */
+/* I-Search and Searching */
+/* */
+/* **************************************************************** */
+
+/* Copyright (C) 1987,1989 Free Software Foundation, Inc.
+
+ This file contains the Readline Library (the Library), a set of
+ routines for providing Emacs style line input to programs that ask
+ for it.
+
+ The Library is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 1, or (at your option)
+ any later version.
+
+ The Library is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ General Public License for more details.
+
+ The GNU General Public License is often shipped with GNU software, and
+ is generally kept in a file called COPYING or LICENSE. If you do not
+ have a copy of the license, write to the Free Software Foundation,
+ 675 Mass Ave, Cambridge, MA 02139, USA. */
+#define READLINE_LIBRARY
+
+#if defined (HAVE_CONFIG_H)
+# include <config.h>
+#endif
+
+#include <stdio.h>
+
+#if defined (HAVE_UNISTD_H)
+# include <unistd.h>
+#endif
+
+#include <sys/types.h>
+
+#include "rldefs.h"
+#include "readline.h"
+#include "history.h"
+
+/* Variables imported from other files in the readline library. */
+extern Keymap _rl_keymap;
+extern HIST_ENTRY *saved_line_for_history;
+extern int rl_line_buffer_len;
+extern int rl_point, rl_end;
+extern char *rl_line_buffer;
+
+extern void _rl_save_prompt ();
+extern void _rl_restore_prompt ();
+
+extern int rl_execute_next ();
+extern void rl_extend_line_buffer ();
+
+extern int _rl_input_available ();
+
+extern char *xmalloc (), *xrealloc ();
+
+static int rl_search_history ();
+
+/* Last line found by the current incremental search, so we don't `find'
+ identical lines many times in a row. */
+static char *prev_line_found;
+
+/* Search backwards through the history looking for a string which is typed
+ interactively. Start with the current line. */
+int
+rl_reverse_search_history (sign, key)
+ int sign, key;
+{
+ return (rl_search_history (-sign, key));
+}
+
+/* Search forwards through the history looking for a string which is typed
+ interactively. Start with the current line. */
+int
+rl_forward_search_history (sign, key)
+ int sign, key;
+{
+ return (rl_search_history (sign, key));
+}
+
+/* Display the current state of the search in the echo-area.
+ SEARCH_STRING contains the string that is being searched for,
+ DIRECTION is zero for forward, or 1 for reverse,
+ WHERE is the history list number of the current line. If it is
+ -1, then this line is the starting one. */
+static void
+rl_display_search (search_string, reverse_p, where)
+ char *search_string;
+ int reverse_p, where;
+{
+ char *message;
+ int msglen, searchlen;
+
+ searchlen = (search_string && *search_string) ? strlen (search_string) : 0;
+
+ message = xmalloc (searchlen + 33);
+ msglen = 0;
+
+#if defined (NOTDEF)
+ if (where != -1)
+ {
+ sprintf (message, "[%d]", where + history_base);
+ msglen = strlen (message);
+ }
+#endif /* NOTDEF */
+
+ message[msglen++] = '(';
+
+ if (reverse_p)
+ {
+ strcpy (message + msglen, "reverse-");
+ msglen += 8;
+ }
+
+ strcpy (message + msglen, "i-search)`");
+ msglen += 10;
+
+ if (search_string)
+ {
+ strcpy (message + msglen, search_string);
+ msglen += searchlen;
+ }
+
+ strcpy (message + msglen, "': ");
+
+ rl_message ("%s", message, 0);
+ free (message);
+ (*rl_redisplay_function) ();
+}
+
+/* Search through the history looking for an interactively typed string.
+ This is analogous to i-search. We start the search in the current line.
+ DIRECTION is which direction to search; >= 0 means forward, < 0 means
+ backwards. */
+static int
+rl_search_history (direction, invoking_key)
+ int direction, invoking_key;
+{
+ /* The string that the user types in to search for. */
+ char *search_string;
+
+ /* The current length of SEARCH_STRING. */
+ int search_string_index;
+
+ /* The amount of space that SEARCH_STRING has allocated to it. */
+ int search_string_size;
+
+ /* The list of lines to search through. */
+ char **lines, *allocated_line;
+
+ /* The length of LINES. */
+ int hlen;
+
+ /* Where we get LINES from. */
+ HIST_ENTRY **hlist;
+
+ register int i;
+ int orig_point, orig_line, last_found_line;
+ int c, found, failed, sline_len;
+
+ /* The line currently being searched. */
+ char *sline;
+
+ /* Offset in that line. */
+ int line_index;
+
+ /* Non-zero if we are doing a reverse search. */
+ int reverse;
+
+ orig_point = rl_point;
+ last_found_line = orig_line = where_history ();
+ reverse = direction < 0;
+ hlist = history_list ();
+ allocated_line = (char *)NULL;
+
+ /* Create an arrary of pointers to the lines that we want to search. */
+ maybe_replace_line ();
+ i = 0;
+ if (hlist)
+ for (i = 0; hlist[i]; i++);
+
+ /* Allocate space for this many lines, +1 for the current input line,
+ and remember those lines. */
+ lines = (char **)xmalloc ((1 + (hlen = i)) * sizeof (char *));
+ for (i = 0; i < hlen; i++)
+ lines[i] = hlist[i]->line;
+
+ if (saved_line_for_history)
+ lines[i] = saved_line_for_history->line;
+ else
+ {
+ /* Keep track of this so we can free it. */
+ allocated_line = xmalloc (1 + strlen (rl_line_buffer));
+ strcpy (allocated_line, &rl_line_buffer[0]);
+ lines[i] = allocated_line;
+ }
+
+ hlen++;
+
+ /* The line where we start the search. */
+ i = orig_line;
+
+ _rl_save_prompt ();
+
+ /* Initialize search parameters. */
+ search_string = xmalloc (search_string_size = 128);
+ *search_string = '\0';
+ search_string_index = 0;
+ prev_line_found = (char *)0; /* XXX */
+
+ /* Normalize DIRECTION into 1 or -1. */
+ direction = (direction >= 0) ? 1 : -1;
+
+ rl_display_search (search_string, reverse, -1);
+
+ sline = rl_line_buffer;
+ sline_len = strlen (sline);
+ line_index = rl_point;
+
+ found = failed = 0;
+ for (;;)
+ {
+ Function *f = (Function *)NULL;
+
+ /* Read a key and decide how to proceed. */
+ c = rl_read_key ();
+
+ if (_rl_keymap[c].type == ISFUNC)
+ {
+ f = _rl_keymap[c].function;
+
+ if (f == rl_reverse_search_history)
+ c = reverse ? -1 : -2;
+ else if (f == rl_forward_search_history)
+ c = !reverse ? -1 : -2;
+ }
+
+ /* Let NEWLINE (^J) terminate the search for people who don't like
+ using ESC. ^M can still be used to terminate the search and
+ immediately execute the command. */
+ if (c == ESC || c == NEWLINE)
+ {
+ /* ESC still terminates the search, but if there is pending
+ input or if input arrives within 0.1 seconds (on systems
+ with select(2)) it is used as a prefix character
+ with rl_execute_next. WATCH OUT FOR THIS! This is intended
+ to allow the arrow keys to be used like ^F and ^B are used
+ to terminate the search and execute the movement command. */
+ if (c == ESC && _rl_input_available ()) /* XXX */
+ rl_execute_next (ESC);
+ break;
+ }
+
+ if (c >= 0 && (CTRL_CHAR (c) || META_CHAR (c) || c == RUBOUT))
+ {
+ rl_execute_next (c);
+ break;
+ }
+
+ switch (c)
+ {
+ case -1:
+ if (search_string_index == 0)
+ continue;
+ else if (reverse)
+ --line_index;
+ else if (line_index != sline_len)
+ ++line_index;
+ else
+ ding ();
+ break;
+
+ /* switch directions */
+ case -2:
+ direction = -direction;
+ reverse = direction < 0;
+ break;
+
+ case CTRL ('G'):
+ strcpy (rl_line_buffer, lines[orig_line]);
+ rl_point = orig_point;
+ rl_end = strlen (rl_line_buffer);
+ _rl_restore_prompt();
+ rl_clear_message ();
+ free (allocated_line);
+ free (lines);
+ return 0;
+
+ default:
+ /* Add character to search string and continue search. */
+ if (search_string_index + 2 >= search_string_size)
+ {
+ search_string_size += 128;
+ search_string = xrealloc (search_string, search_string_size);
+ }
+ search_string[search_string_index++] = c;
+ search_string[search_string_index] = '\0';
+ break;
+ }
+
+ for (found = failed = 0;;)
+ {
+ int limit = sline_len - search_string_index + 1;
+
+ /* Search the current line. */
+ while (reverse ? (line_index >= 0) : (line_index < limit))
+ {
+ if (STREQN (search_string, sline + line_index, search_string_index))
+ {
+ found++;
+ break;
+ }
+ else
+ line_index += direction;
+ }
+ if (found)
+ break;
+
+ /* Move to the next line, but skip new copies of the line
+ we just found and lines shorter than the string we're
+ searching for. */
+ do
+ {
+ /* Move to the next line. */
+ i += direction;
+
+ /* At limit for direction? */
+ if (reverse ? (i < 0) : (i == hlen))
+ {
+ failed++;
+ break;
+ }
+
+ /* We will need these later. */
+ sline = lines[i];
+ sline_len = strlen (sline);
+ }
+ while ((prev_line_found && STREQ (prev_line_found, lines[i])) ||
+ (search_string_index > sline_len));
+
+ if (failed)
+ break;
+
+ /* Now set up the line for searching... */
+ line_index = reverse ? sline_len - search_string_index : 0;
+ }
+
+ if (failed)
+ {
+ /* We cannot find the search string. Ding the bell. */
+ ding ();
+ i = last_found_line;
+ continue; /* XXX - was break */
+ }
+
+ /* We have found the search string. Just display it. But don't
+ actually move there in the history list until the user accepts
+ the location. */
+ if (found)
+ {
+ int line_len;
+
+ prev_line_found = lines[i];
+ line_len = strlen (lines[i]);
+
+ if (line_len >= rl_line_buffer_len)
+ rl_extend_line_buffer (line_len);
+
+ strcpy (rl_line_buffer, lines[i]);
+ rl_point = line_index;
+ rl_end = line_len;
+ last_found_line = i;
+ rl_display_search (search_string, reverse, (i == orig_line) ? -1 : i);
+ }
+ }
+
+ /* The searching is over. The user may have found the string that she
+ was looking for, or else she may have exited a failing search. If
+ LINE_INDEX is -1, then that shows that the string searched for was
+ not found. We use this to determine where to place rl_point. */
+
+ /* First put back the original state. */
+ strcpy (rl_line_buffer, lines[orig_line]);
+
+ _rl_restore_prompt ();
+
+ /* Free the search string. */
+ free (search_string);
+
+ if (last_found_line < orig_line)
+ rl_get_previous_history (orig_line - last_found_line);
+ else
+ rl_get_next_history (last_found_line - orig_line);
+
+ /* If the string was not found, put point at the end of the line. */
+ if (line_index < 0)
+ line_index = strlen (rl_line_buffer);
+ rl_point = line_index;
+ rl_clear_message ();
+
+ free (allocated_line);
+ free (lines);
+
+ return 0;
+}
diff --git a/contrib/libreadline/keymaps.c b/contrib/libreadline/keymaps.c
new file mode 100644
index 0000000..9359749
--- /dev/null
+++ b/contrib/libreadline/keymaps.c
@@ -0,0 +1,150 @@
+/* keymaps.c -- Functions and keymaps for the GNU Readline library. */
+
+/* Copyright (C) 1988,1989 Free Software Foundation, Inc.
+
+ This file is part of GNU Readline, a library for reading lines
+ of text with interactive input and history editing.
+
+ Readline is free software; you can redistribute it and/or modify it
+ under the terms of the GNU General Public License as published by the
+ Free Software Foundation; either version 1, or (at your option) any
+ later version.
+
+ Readline is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with Readline; see the file COPYING. If not, write to the Free
+ Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
+#define READLINE_LIBRARY
+
+#if defined (HAVE_CONFIG_H)
+# include <config.h>
+#endif
+
+#if defined (HAVE_STDLIB_H)
+# include <stdlib.h>
+#else
+# include "ansi_stdlib.h"
+#endif /* HAVE_STDLIB_H */
+
+#include "rlconf.h"
+#include "keymaps.h"
+#include "emacs_keymap.c"
+
+#if defined (VI_MODE)
+#include "vi_keymap.c"
+#endif
+
+extern int rl_do_lowercase_version ();
+extern int rl_rubout (), rl_insert ();
+
+extern char *xmalloc (), *xrealloc ();
+
+/* **************************************************************** */
+/* */
+/* Functions for manipulating Keymaps. */
+/* */
+/* **************************************************************** */
+
+
+/* Return a new, empty keymap.
+ Free it with free() when you are done. */
+Keymap
+rl_make_bare_keymap ()
+{
+ register int i;
+ Keymap keymap = (Keymap)xmalloc (KEYMAP_SIZE * sizeof (KEYMAP_ENTRY));
+
+ for (i = 0; i < KEYMAP_SIZE; i++)
+ {
+ keymap[i].type = ISFUNC;
+ keymap[i].function = (Function *)NULL;
+ }
+
+ for (i = 'A'; i < ('Z' + 1); i++)
+ {
+ keymap[i].type = ISFUNC;
+ keymap[i].function = rl_do_lowercase_version;
+ }
+
+ return (keymap);
+}
+
+/* Return a new keymap which is a copy of MAP. */
+Keymap
+rl_copy_keymap (map)
+ Keymap map;
+{
+ register int i;
+ Keymap temp = rl_make_bare_keymap ();
+
+ for (i = 0; i < KEYMAP_SIZE; i++)
+ {
+ temp[i].type = map[i].type;
+ temp[i].function = map[i].function;
+ }
+ return (temp);
+}
+
+/* Return a new keymap with the printing characters bound to rl_insert,
+ the uppercase Meta characters bound to run their lowercase equivalents,
+ and the Meta digits bound to produce numeric arguments. */
+Keymap
+rl_make_keymap ()
+{
+ register int i;
+ Keymap newmap;
+
+ newmap = rl_make_bare_keymap ();
+
+ /* All ASCII printing characters are self-inserting. */
+ for (i = ' '; i < 127; i++)
+ newmap[i].function = rl_insert;
+
+ newmap[TAB].function = rl_insert;
+ newmap[RUBOUT].function = rl_rubout; /* RUBOUT == 127 */
+ newmap[CTRL('H')].function = rl_rubout;
+
+#if KEYMAP_SIZE > 128
+ /* Printing characters in some 8-bit character sets. */
+ for (i = 128; i < 160; i++)
+ newmap[i].function = rl_insert;
+
+ /* ISO Latin-1 printing characters should self-insert. */
+ for (i = 160; i < 256; i++)
+ newmap[i].function = rl_insert;
+#endif /* KEYMAP_SIZE > 128 */
+
+ return (newmap);
+}
+
+/* Free the storage associated with MAP. */
+void
+rl_discard_keymap (map)
+ Keymap (map);
+{
+ int i;
+
+ if (!map)
+ return;
+
+ for (i = 0; i < KEYMAP_SIZE; i++)
+ {
+ switch (map[i].type)
+ {
+ case ISFUNC:
+ break;
+
+ case ISKMAP:
+ rl_discard_keymap ((Keymap)map[i].function);
+ break;
+
+ case ISMACR:
+ free ((char *)map[i].function);
+ break;
+ }
+ }
+}
diff --git a/contrib/libreadline/keymaps.h b/contrib/libreadline/keymaps.h
new file mode 100644
index 0000000..f8d0e2e
--- /dev/null
+++ b/contrib/libreadline/keymaps.h
@@ -0,0 +1,95 @@
+/* keymaps.h -- Manipulation of readline keymaps. */
+
+/* Copyright (C) 1987, 1989, 1992 Free Software Foundation, Inc.
+
+ This file is part of the GNU Readline Library, a library for
+ reading lines of text with interactive input and history editing.
+
+ The GNU Readline Library is free software; you can redistribute it
+ and/or modify it under the terms of the GNU General Public License
+ as published by the Free Software Foundation; either version 1, or
+ (at your option) any later version.
+
+ The GNU Readline Library is distributed in the hope that it will be
+ useful, but WITHOUT ANY WARRANTY; without even the implied warranty
+ of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ The GNU General Public License is often shipped with GNU software, and
+ is generally kept in a file called COPYING or LICENSE. If you do not
+ have a copy of the license, write to the Free Software Foundation,
+ 675 Mass Ave, Cambridge, MA 02139, USA. */
+
+#ifndef _KEYMAPS_H_
+#define _KEYMAPS_H_
+
+#if defined (READLINE_LIBRARY)
+# include "chardefs.h"
+#else
+# include <readline/chardefs.h>
+#endif
+
+#if !defined (_FUNCTION_DEF)
+# define _FUNCTION_DEF
+typedef int Function ();
+typedef void VFunction ();
+typedef char *CPFunction ();
+typedef char **CPPFunction ();
+#endif
+
+/* A keymap contains one entry for each key in the ASCII set.
+ Each entry consists of a type and a pointer.
+ POINTER is the address of a function to run, or the
+ address of a keymap to indirect through.
+ TYPE says which kind of thing POINTER is. */
+typedef struct _keymap_entry {
+ char type;
+ Function *function;
+} KEYMAP_ENTRY;
+
+/* This must be large enough to hold bindings for all of the characters
+ in a desired character set (e.g, 128 for ASCII, 256 for ISO Latin-x,
+ and so on). */
+#define KEYMAP_SIZE 256
+
+/* I wanted to make the above structure contain a union of:
+ union { Function *function; struct _keymap_entry *keymap; } value;
+ but this made it impossible for me to create a static array.
+ Maybe I need C lessons. */
+
+typedef KEYMAP_ENTRY KEYMAP_ENTRY_ARRAY[KEYMAP_SIZE];
+typedef KEYMAP_ENTRY *Keymap;
+
+/* The values that TYPE can have in a keymap entry. */
+#define ISFUNC 0
+#define ISKMAP 1
+#define ISMACR 2
+
+extern KEYMAP_ENTRY_ARRAY emacs_standard_keymap, emacs_meta_keymap, emacs_ctlx_keymap;
+extern KEYMAP_ENTRY_ARRAY vi_insertion_keymap, vi_movement_keymap;
+
+/* Return a new, empty keymap.
+ Free it with free() when you are done. */
+extern Keymap rl_make_bare_keymap ();
+
+/* Return a new keymap which is a copy of MAP. */
+extern Keymap rl_copy_keymap ();
+
+/* Return a new keymap with the printing characters bound to rl_insert,
+ the lowercase Meta characters bound to run their equivalents, and
+ the Meta digits bound to produce numeric arguments. */
+extern Keymap rl_make_keymap ();
+
+extern void rl_discard_keymap ();
+
+/* Return the keymap corresponding to a given name. Names look like
+ `emacs' or `emacs-meta' or `vi-insert'. */
+extern Keymap rl_get_keymap_by_name ();
+
+/* Return the current keymap. */
+extern Keymap rl_get_keymap ();
+
+/* Set the current keymap to MAP. */
+extern void rl_set_keymap ();
+
+#endif /* _KEYMAPS_H_ */
diff --git a/contrib/libreadline/kill.c b/contrib/libreadline/kill.c
new file mode 100644
index 0000000..89f6b55
--- /dev/null
+++ b/contrib/libreadline/kill.c
@@ -0,0 +1,547 @@
+/* kill.c -- kill ring management. */
+
+/* Copyright (C) 1994 Free Software Foundation, Inc.
+
+ This file is part of the GNU Readline Library, a library for
+ reading lines of text with interactive input and history editing.
+
+ The GNU Readline Library is free software; you can redistribute it
+ and/or modify it under the terms of the GNU General Public License
+ as published by the Free Software Foundation; either version 1, or
+ (at your option) any later version.
+
+ The GNU Readline Library is distributed in the hope that it will be
+ useful, but WITHOUT ANY WARRANTY; without even the implied warranty
+ of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ The GNU General Public License is often shipped with GNU software, and
+ is generally kept in a file called COPYING or LICENSE. If you do not
+ have a copy of the license, write to the Free Software Foundation,
+ 675 Mass Ave, Cambridge, MA 02139, USA. */
+#define READLINE_LIBRARY
+
+#if defined (HAVE_CONFIG_H)
+# include <config.h>
+#endif
+
+#include <sys/types.h>
+
+#if defined (HAVE_UNISTD_H)
+# include <unistd.h> /* for _POSIX_VERSION */
+#endif /* HAVE_UNISTD_H */
+
+#if defined (HAVE_STDLIB_H)
+# include <stdlib.h>
+#else
+# include "ansi_stdlib.h"
+#endif /* HAVE_STDLIB_H */
+
+#include <stdio.h>
+
+/* System-specific feature definitions and include files. */
+#include "rldefs.h"
+
+/* Some standard library routines. */
+#include "readline.h"
+#include "history.h"
+
+extern int _rl_last_command_was_kill;
+extern int rl_editing_mode;
+extern int rl_explicit_arg;
+extern Function *rl_last_func;
+
+extern void _rl_init_argument ();
+extern int _rl_set_mark_at_pos ();
+extern void _rl_abort_internal ();
+
+extern char *xmalloc (), *xrealloc ();
+
+/* **************************************************************** */
+/* */
+/* Killing Mechanism */
+/* */
+/* **************************************************************** */
+
+/* What we assume for a max number of kills. */
+#define DEFAULT_MAX_KILLS 10
+
+/* The real variable to look at to find out when to flush kills. */
+static int rl_max_kills = DEFAULT_MAX_KILLS;
+
+/* Where to store killed text. */
+static char **rl_kill_ring = (char **)NULL;
+
+/* Where we are in the kill ring. */
+static int rl_kill_index;
+
+/* How many slots we have in the kill ring. */
+static int rl_kill_ring_length;
+
+/* How to say that you only want to save a certain amount
+ of kill material. */
+int
+rl_set_retained_kills (num)
+ int num;
+{
+ return 0;
+}
+
+/* Add TEXT to the kill ring, allocating a new kill ring slot as necessary.
+ This uses TEXT directly, so the caller must not free it. If APPEND is
+ non-zero, and the last command was a kill, the text is appended to the
+ current kill ring slot, otherwise prepended. */
+static int
+_rl_copy_to_kill_ring (text, append)
+ char *text;
+ int append;
+{
+ char *old, *new;
+ int slot;
+
+ /* First, find the slot to work with. */
+ if (_rl_last_command_was_kill == 0)
+ {
+ /* Get a new slot. */
+ if (rl_kill_ring == 0)
+ {
+ /* If we don't have any defined, then make one. */
+ rl_kill_ring = (char **)
+ xmalloc (((rl_kill_ring_length = 1) + 1) * sizeof (char *));
+ rl_kill_ring[slot = 0] = (char *)NULL;
+ }
+ else
+ {
+ /* We have to add a new slot on the end, unless we have
+ exceeded the max limit for remembering kills. */
+ slot = rl_kill_ring_length;
+ if (slot == rl_max_kills)
+ {
+ register int i;
+ free (rl_kill_ring[0]);
+ for (i = 0; i < slot; i++)
+ rl_kill_ring[i] = rl_kill_ring[i + 1];
+ }
+ else
+ {
+ slot = rl_kill_ring_length += 1;
+ rl_kill_ring = (char **)xrealloc (rl_kill_ring, slot * sizeof (char *));
+ }
+ rl_kill_ring[--slot] = (char *)NULL;
+ }
+ }
+ else
+ slot = rl_kill_ring_length - 1;
+
+ /* If the last command was a kill, prepend or append. */
+ if (_rl_last_command_was_kill && rl_editing_mode != vi_mode)
+ {
+ old = rl_kill_ring[slot];
+ new = xmalloc (1 + strlen (old) + strlen (text));
+
+ if (append)
+ {
+ strcpy (new, old);
+ strcat (new, text);
+ }
+ else
+ {
+ strcpy (new, text);
+ strcat (new, old);
+ }
+ free (old);
+ free (text);
+ rl_kill_ring[slot] = new;
+ }
+ else
+ rl_kill_ring[slot] = text;
+
+ rl_kill_index = slot;
+ return 0;
+}
+
+/* The way to kill something. This appends or prepends to the last
+ kill, if the last command was a kill command. if FROM is less
+ than TO, then the text is appended, otherwise prepended. If the
+ last command was not a kill command, then a new slot is made for
+ this kill. */
+int
+rl_kill_text (from, to)
+ int from, to;
+{
+ char *text;
+
+ /* Is there anything to kill? */
+ if (from == to)
+ {
+ _rl_last_command_was_kill++;
+ return 0;
+ }
+
+ text = rl_copy_text (from, to);
+
+ /* Delete the copied text from the line. */
+ rl_delete_text (from, to);
+
+ _rl_copy_to_kill_ring (text, from < to);
+
+ _rl_last_command_was_kill++;
+ return 0;
+}
+
+/* Now REMEMBER! In order to do prepending or appending correctly, kill
+ commands always make rl_point's original position be the FROM argument,
+ and rl_point's extent be the TO argument. */
+
+/* **************************************************************** */
+/* */
+/* Killing Commands */
+/* */
+/* **************************************************************** */
+
+/* Delete the word at point, saving the text in the kill ring. */
+int
+rl_kill_word (count, key)
+ int count, key;
+{
+ int orig_point = rl_point;
+
+ if (count < 0)
+ return (rl_backward_kill_word (-count, key));
+ else
+ {
+ rl_forward_word (count, key);
+
+ if (rl_point != orig_point)
+ rl_kill_text (orig_point, rl_point);
+
+ rl_point = orig_point;
+ }
+ return 0;
+}
+
+/* Rubout the word before point, placing it on the kill ring. */
+int
+rl_backward_kill_word (count, ignore)
+ int count, ignore;
+{
+ int orig_point = rl_point;
+
+ if (count < 0)
+ return (rl_kill_word (-count, ignore));
+ else
+ {
+ rl_backward_word (count, ignore);
+
+ if (rl_point != orig_point)
+ rl_kill_text (orig_point, rl_point);
+ }
+ return 0;
+}
+
+/* Kill from here to the end of the line. If DIRECTION is negative, kill
+ back to the line start instead. */
+int
+rl_kill_line (direction, ignore)
+ int direction, ignore;
+{
+ int orig_point = rl_point;
+
+ if (direction < 0)
+ return (rl_backward_kill_line (1, ignore));
+ else
+ {
+ rl_end_of_line (1, ignore);
+ if (orig_point != rl_point)
+ rl_kill_text (orig_point, rl_point);
+ rl_point = orig_point;
+ }
+ return 0;
+}
+
+/* Kill backwards to the start of the line. If DIRECTION is negative, kill
+ forwards to the line end instead. */
+int
+rl_backward_kill_line (direction, ignore)
+ int direction, ignore;
+{
+ int orig_point = rl_point;
+
+ if (direction < 0)
+ return (rl_kill_line (1, ignore));
+ else
+ {
+ if (!rl_point)
+ ding ();
+ else
+ {
+ rl_beg_of_line (1, ignore);
+ rl_kill_text (orig_point, rl_point);
+ }
+ }
+ return 0;
+}
+
+/* Kill the whole line, no matter where point is. */
+int
+rl_kill_full_line (count, ignore)
+ int count, ignore;
+{
+ rl_begin_undo_group ();
+ rl_point = 0;
+ rl_kill_text (rl_point, rl_end);
+ rl_end_undo_group ();
+ return 0;
+}
+
+/* The next two functions mimic unix line editing behaviour, except they
+ save the deleted text on the kill ring. This is safer than not saving
+ it, and since we have a ring, nobody should get screwed. */
+
+/* This does what C-w does in Unix. We can't prevent people from
+ using behaviour that they expect. */
+int
+rl_unix_word_rubout (count, key)
+ int count, key;
+{
+ int orig_point;
+
+ if (rl_point == 0)
+ ding ();
+ else
+ {
+ orig_point = rl_point;
+ if (count <= 0)
+ count = 1;
+
+ while (count--)
+ {
+ while (rl_point && whitespace (rl_line_buffer[rl_point - 1]))
+ rl_point--;
+
+ while (rl_point && (whitespace (rl_line_buffer[rl_point - 1]) == 0))
+ rl_point--;
+ }
+
+ rl_kill_text (orig_point, rl_point);
+ }
+ return 0;
+}
+
+/* Here is C-u doing what Unix does. You don't *have* to use these
+ key-bindings. We have a choice of killing the entire line, or
+ killing from where we are to the start of the line. We choose the
+ latter, because if you are a Unix weenie, then you haven't backspaced
+ into the line at all, and if you aren't, then you know what you are
+ doing. */
+int
+rl_unix_line_discard (count, key)
+ int count, key;
+{
+ if (rl_point == 0)
+ ding ();
+ else
+ {
+ rl_kill_text (rl_point, 0);
+ rl_point = 0;
+ }
+ return 0;
+}
+
+/* Copy the text in the `region' to the kill ring. If DELETE is non-zero,
+ delete the text from the line as well. */
+static int
+region_kill_internal (delete)
+ int delete;
+{
+ char *text;
+
+ if (rl_mark == rl_point)
+ {
+ _rl_last_command_was_kill++;
+ return 0;
+ }
+
+ text = rl_copy_text (rl_point, rl_mark);
+ if (delete)
+ rl_delete_text (rl_point, rl_mark);
+ _rl_copy_to_kill_ring (text, rl_point < rl_mark);
+
+ _rl_last_command_was_kill++;
+ return 0;
+}
+
+/* Copy the text in the region to the kill ring. */
+int
+rl_copy_region_to_kill (count, ignore)
+ int count, ignore;
+{
+ return (region_kill_internal (0));
+}
+
+/* Kill the text between the point and mark. */
+int
+rl_kill_region (count, ignore)
+ int count, ignore;
+{
+ return (region_kill_internal (1));
+}
+
+/* Copy COUNT words to the kill ring. DIR says which direction we look
+ to find the words. */
+static int
+_rl_copy_word_as_kill (count, dir)
+ int count, dir;
+{
+ int om, op, r;
+
+ om = rl_mark;
+ op = rl_point;
+
+ if (dir > 0)
+ rl_forward_word (count, 0);
+ else
+ rl_backward_word (count, 0);
+
+ rl_mark = rl_point;
+
+ if (dir > 0)
+ rl_backward_word (count, 0);
+ else
+ rl_forward_word (count, 0);
+
+ r = region_kill_internal (0);
+
+ rl_mark = om;
+ rl_point = op;
+
+ return r;
+}
+
+int
+rl_copy_forward_word (count, key)
+ int count, key;
+{
+ if (count < 0)
+ return (rl_copy_backward_word (-count, key));
+
+ return (_rl_copy_word_as_kill (count, 1));
+}
+
+int
+rl_copy_backward_word (count, key)
+ int count, key;
+{
+ if (count < 0)
+ return (rl_copy_forward_word (-count, key));
+
+ return (_rl_copy_word_as_kill (count, -1));
+}
+
+/* Yank back the last killed text. This ignores arguments. */
+int
+rl_yank (count, ignore)
+ int count, ignore;
+{
+ if (rl_kill_ring == 0)
+ {
+ _rl_abort_internal ();
+ return -1;
+ }
+
+ _rl_set_mark_at_pos (rl_point);
+ rl_insert_text (rl_kill_ring[rl_kill_index]);
+ return 0;
+}
+
+/* If the last command was yank, or yank_pop, and the text just
+ before point is identical to the current kill item, then
+ delete that text from the line, rotate the index down, and
+ yank back some other text. */
+int
+rl_yank_pop (count, key)
+ int count, key;
+{
+ int l, n;
+
+ if (((rl_last_func != rl_yank_pop) && (rl_last_func != rl_yank)) ||
+ !rl_kill_ring)
+ {
+ _rl_abort_internal ();
+ return -1;
+ }
+
+ l = strlen (rl_kill_ring[rl_kill_index]);
+ n = rl_point - l;
+ if (n >= 0 && STREQN (rl_line_buffer + n, rl_kill_ring[rl_kill_index], l))
+ {
+ rl_delete_text (n, rl_point);
+ rl_point = n;
+ rl_kill_index--;
+ if (rl_kill_index < 0)
+ rl_kill_index = rl_kill_ring_length - 1;
+ rl_yank (1, 0);
+ return 0;
+ }
+ else
+ {
+ _rl_abort_internal ();
+ return -1;
+ }
+}
+
+/* Yank the COUNTth argument from the previous history line. */
+int
+rl_yank_nth_arg (count, ignore)
+ int count, ignore;
+{
+ register HIST_ENTRY *entry;
+ char *arg;
+
+ entry = previous_history ();
+ if (entry)
+ next_history ();
+ else
+ {
+ ding ();
+ return -1;
+ }
+
+ arg = history_arg_extract (count, count, entry->line);
+ if (!arg || !*arg)
+ {
+ ding ();
+ return -1;
+ }
+
+ rl_begin_undo_group ();
+
+#if defined (VI_MODE)
+ /* Vi mode always inserts a space before yanking the argument, and it
+ inserts it right *after* rl_point. */
+ if (rl_editing_mode == vi_mode)
+ {
+ rl_vi_append_mode ();
+ rl_insert_text (" ");
+ }
+#endif /* VI_MODE */
+
+ rl_insert_text (arg);
+ free (arg);
+
+ rl_end_undo_group ();
+ return 0;
+}
+
+/* Yank the last argument from the previous history line. This `knows'
+ how rl_yank_nth_arg treats a count of `$'. With an argument, this
+ behaves the same as rl_yank_nth_arg. */
+int
+rl_yank_last_arg (count, key)
+ int count, key;
+{
+ if (rl_explicit_arg)
+ return (rl_yank_nth_arg (count, key));
+ else
+ return (rl_yank_nth_arg ('$', key));
+}
diff --git a/contrib/libreadline/macro.c b/contrib/libreadline/macro.c
new file mode 100644
index 0000000..f3c442b
--- /dev/null
+++ b/contrib/libreadline/macro.c
@@ -0,0 +1,277 @@
+/* macro.c -- keyboard macros for readline. */
+
+/* Copyright (C) 1994 Free Software Foundation, Inc.
+
+ This file is part of the GNU Readline Library, a library for
+ reading lines of text with interactive input and history editing.
+
+ The GNU Readline Library is free software; you can redistribute it
+ and/or modify it under the terms of the GNU General Public License
+ as published by the Free Software Foundation; either version 1, or
+ (at your option) any later version.
+
+ The GNU Readline Library is distributed in the hope that it will be
+ useful, but WITHOUT ANY WARRANTY; without even the implied warranty
+ of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ The GNU General Public License is often shipped with GNU software, and
+ is generally kept in a file called COPYING or LICENSE. If you do not
+ have a copy of the license, write to the Free Software Foundation,
+ 675 Mass Ave, Cambridge, MA 02139, USA. */
+#define READLINE_LIBRARY
+
+#if defined (HAVE_CONFIG_H)
+# include <config.h>
+#endif
+
+#include <sys/types.h>
+
+#if defined (HAVE_UNISTD_H)
+# include <unistd.h> /* for _POSIX_VERSION */
+#endif /* HAVE_UNISTD_H */
+
+#if defined (HAVE_STDLIB_H)
+# include <stdlib.h>
+#else
+# include "ansi_stdlib.h"
+#endif /* HAVE_STDLIB_H */
+
+#include <stdio.h>
+
+/* System-specific feature definitions and include files. */
+#include "rldefs.h"
+
+/* Some standard library routines. */
+#include "readline.h"
+#include "history.h"
+
+#define SWAP(s, e) do { int t; t = s; s = e; e = t; } while (0)
+
+/* Forward definitions. */
+void _rl_push_executing_macro (), _rl_pop_executing_macro ();
+void _rl_add_macro_char ();
+
+/* Extern declarations. */
+extern int rl_explicit_arg;
+extern int rl_key_sequence_length;
+
+extern void _rl_abort_internal ();
+
+extern char *xmalloc (), *xrealloc ();
+
+/* **************************************************************** */
+/* */
+/* Hacking Keyboard Macros */
+/* */
+/* **************************************************************** */
+
+/* Non-zero means to save keys that we dispatch on in a kbd macro. */
+int _rl_defining_kbd_macro = 0;
+
+/* The currently executing macro string. If this is non-zero,
+ then it is a malloc ()'ed string where input is coming from. */
+char *_rl_executing_macro = (char *)NULL;
+
+/* The offset in the above string to the next character to be read. */
+static int executing_macro_index;
+
+/* The current macro string being built. Characters get stuffed
+ in here by add_macro_char (). */
+static char *current_macro = (char *)NULL;
+
+/* The size of the buffer allocated to current_macro. */
+static int current_macro_size;
+
+/* The index at which characters are being added to current_macro. */
+static int current_macro_index;
+
+/* A structure used to save nested macro strings.
+ It is a linked list of string/index for each saved macro. */
+struct saved_macro {
+ struct saved_macro *next;
+ char *string;
+ int sindex;
+};
+
+/* The list of saved macros. */
+static struct saved_macro *macro_list = (struct saved_macro *)NULL;
+
+/* Set up to read subsequent input from STRING.
+ STRING is free ()'ed when we are done with it. */
+void
+_rl_with_macro_input (string)
+ char *string;
+{
+ _rl_push_executing_macro ();
+ _rl_executing_macro = string;
+ executing_macro_index = 0;
+}
+
+/* Return the next character available from a macro, or 0 if
+ there are no macro characters. */
+int
+_rl_next_macro_key ()
+{
+ if (_rl_executing_macro == 0)
+ return (0);
+
+ if (_rl_executing_macro[executing_macro_index] == 0)
+ {
+ _rl_pop_executing_macro ();
+ return (_rl_next_macro_key ());
+ }
+
+ return (_rl_executing_macro[executing_macro_index++]);
+}
+
+/* Save the currently executing macro on a stack of saved macros. */
+void
+_rl_push_executing_macro ()
+{
+ struct saved_macro *saver;
+
+ saver = (struct saved_macro *)xmalloc (sizeof (struct saved_macro));
+ saver->next = macro_list;
+ saver->sindex = executing_macro_index;
+ saver->string = _rl_executing_macro;
+
+ macro_list = saver;
+}
+
+/* Discard the current macro, replacing it with the one
+ on the top of the stack of saved macros. */
+void
+_rl_pop_executing_macro ()
+{
+ struct saved_macro *macro;
+
+ if (_rl_executing_macro)
+ free (_rl_executing_macro);
+
+ _rl_executing_macro = (char *)NULL;
+ executing_macro_index = 0;
+
+ if (macro_list)
+ {
+ macro = macro_list;
+ _rl_executing_macro = macro_list->string;
+ executing_macro_index = macro_list->sindex;
+ macro_list = macro_list->next;
+ free (macro);
+ }
+}
+
+/* Add a character to the macro being built. */
+void
+_rl_add_macro_char (c)
+ int c;
+{
+ if (current_macro_index + 1 >= current_macro_size)
+ {
+ if (current_macro == 0)
+ current_macro = xmalloc (current_macro_size = 25);
+ else
+ current_macro = xrealloc (current_macro, current_macro_size += 25);
+ }
+
+ current_macro[current_macro_index++] = c;
+ current_macro[current_macro_index] = '\0';
+}
+
+void
+_rl_kill_kbd_macro ()
+{
+ if (current_macro)
+ {
+ free (current_macro);
+ current_macro = (char *) NULL;
+ }
+ current_macro_size = current_macro_index = 0;
+
+ if (_rl_executing_macro)
+ {
+ free (_rl_executing_macro);
+ _rl_executing_macro = (char *) NULL;
+ }
+ executing_macro_index = 0;
+
+ _rl_defining_kbd_macro = 0;
+}
+
+/* Begin defining a keyboard macro.
+ Keystrokes are recorded as they are executed.
+ End the definition with rl_end_kbd_macro ().
+ If a numeric argument was explicitly typed, then append this
+ definition to the end of the existing macro, and start by
+ re-executing the existing macro. */
+int
+rl_start_kbd_macro (ignore1, ignore2)
+ int ignore1, ignore2;
+{
+ if (_rl_defining_kbd_macro)
+ {
+ _rl_abort_internal ();
+ return -1;
+ }
+
+ if (rl_explicit_arg)
+ {
+ if (current_macro)
+ _rl_with_macro_input (savestring (current_macro));
+ }
+ else
+ current_macro_index = 0;
+
+ _rl_defining_kbd_macro = 1;
+ return 0;
+}
+
+/* Stop defining a keyboard macro.
+ A numeric argument says to execute the macro right now,
+ that many times, counting the definition as the first time. */
+int
+rl_end_kbd_macro (count, ignore)
+ int count, ignore;
+{
+ if (_rl_defining_kbd_macro == 0)
+ {
+ _rl_abort_internal ();
+ return -1;
+ }
+
+ current_macro_index -= rl_key_sequence_length - 1;
+ current_macro[current_macro_index] = '\0';
+
+ _rl_defining_kbd_macro = 0;
+
+ return (rl_call_last_kbd_macro (--count, 0));
+}
+
+/* Execute the most recently defined keyboard macro.
+ COUNT says how many times to execute it. */
+int
+rl_call_last_kbd_macro (count, ignore)
+ int count, ignore;
+{
+ if (current_macro == 0)
+ _rl_abort_internal ();
+
+ if (_rl_defining_kbd_macro)
+ {
+ ding (); /* no recursive macros */
+ current_macro[--current_macro_index] = '\0'; /* erase this char */
+ return 0;
+ }
+
+ while (count--)
+ _rl_with_macro_input (savestring (current_macro));
+ return 0;
+}
+
+void
+rl_push_macro_input (macro)
+ char *macro;
+{
+ _rl_with_macro_input (macro);
+}
diff --git a/contrib/libreadline/nls.c b/contrib/libreadline/nls.c
new file mode 100644
index 0000000..fad5201
--- /dev/null
+++ b/contrib/libreadline/nls.c
@@ -0,0 +1,198 @@
+/* nls.c -- skeletal internationalization code. */
+
+/* Copyright (C) 1996 Free Software Foundation, Inc.
+
+ This file is part of the GNU Readline Library, a library for
+ reading lines of text with interactive input and history editing.
+
+ The GNU Readline Library is free software; you can redistribute it
+ and/or modify it under the terms of the GNU General Public License
+ as published by the Free Software Foundation; either version 1, or
+ (at your option) any later version.
+
+ The GNU Readline Library is distributed in the hope that it will be
+ useful, but WITHOUT ANY WARRANTY; without even the implied warranty
+ of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ The GNU General Public License is often shipped with GNU software, and
+ is generally kept in a file called COPYING or LICENSE. If you do not
+ have a copy of the license, write to the Free Software Foundation,
+ 675 Mass Ave, Cambridge, MA 02139, USA. */
+#define READLINE_LIBRARY
+
+#if defined (HAVE_CONFIG_H)
+# include <config.h>
+#endif
+
+#if defined (HAVE_UNISTD_H)
+# include <unistd.h>
+#endif /* HAVE_UNISTD_H */
+
+#if defined (HAVE_STDLIB_H)
+# include <stdlib.h>
+#else
+# include "ansi_stdlib.h"
+#endif /* HAVE_STDLIB_H */
+
+#if defined (HAVE_LOCALE_H)
+# include <locale.h>
+#endif
+
+#include <ctype.h>
+
+#include "rldefs.h"
+
+extern int _rl_convert_meta_chars_to_ascii;
+extern int _rl_output_meta_chars;
+extern int _rl_meta_flag;
+
+/* A list of legal values for the LANG or LC_CTYPE environment variables.
+ If a locale name in this list is the value for the LC_ALL, LC_CTYPE,
+ or LANG environment variable (using the first of those with a value),
+ readline eight-bit mode is enabled. */
+static char *legal_lang_values[] =
+{
+ "iso88591",
+ "iso88592",
+ "iso88593",
+ "iso88594",
+ "iso88595",
+ "iso88596",
+ "iso88597",
+ "iso88598",
+ "iso88599",
+ "iso885910",
+ "koi8r",
+ 0
+};
+
+static char *normalize_codeset ();
+static char *find_codeset ();
+
+/* Check for LC_ALL, LC_CTYPE, and LANG and use the first with a value
+ to decide the defaults for 8-bit character input and output. Returns
+ 1 if we set eight-bit mode. */
+int
+_rl_init_eightbit ()
+{
+ char *lspec, *t;
+ int i;
+
+ lspec = getenv ("LC_ALL");
+ if (lspec == 0) lspec = getenv ("LC_CTYPE");
+ if (lspec == 0) lspec = getenv ("LANG");
+ if (lspec == 0 || (t = normalize_codeset (lspec)) == 0)
+ return (0);
+ for (i = 0; t && legal_lang_values[i]; i++)
+ if (STREQ (t, legal_lang_values[i]))
+ {
+ _rl_meta_flag = 1;
+ _rl_convert_meta_chars_to_ascii = 0;
+ _rl_output_meta_chars = 1;
+#if defined (HAVE_SETLOCALE)
+ setlocale (LC_CTYPE, lspec);
+#endif
+ break;
+ }
+ free (t);
+ return (legal_lang_values[i] ? 1 : 0);
+}
+
+static char *
+normalize_codeset (codeset)
+ char *codeset;
+{
+ size_t namelen, i;
+ int len, all_digits;
+ char *wp, *retval;
+
+ codeset = find_codeset (codeset, &namelen);
+
+ if (codeset == 0)
+ return (codeset);
+
+ all_digits = 1;
+ for (len = 0, i = 0; i < namelen; i++)
+ {
+ if (isalnum (codeset[i]))
+ {
+ len++;
+ all_digits &= isdigit (codeset[i]);
+ }
+ }
+
+ retval = (char *)malloc ((all_digits ? 3 : 0) + len + 1);
+ if (retval == 0)
+ return ((char *)0);
+
+ wp = retval;
+ /* Add `iso' to beginning of an all-digit codeset */
+ if (all_digits)
+ {
+ *wp++ = 'i';
+ *wp++ = 's';
+ *wp++ = 'o';
+ }
+
+ for (i = 0; i < namelen; i++)
+ if (isalpha (codeset[i]))
+ *wp++ = (isupper (codeset[i])) ? tolower (codeset[i]) : codeset[i];
+ else if (isdigit (codeset[i]))
+ *wp++ = codeset[i];
+ *wp = '\0';
+
+ return retval;
+}
+
+/* Isolate codeset portion of locale specification. */
+static char *
+find_codeset (name, lenp)
+ char *name;
+ size_t *lenp;
+{
+ char *cp, *language, *result;
+
+ cp = language = name;
+ result = (char *)0;
+
+ while (*cp && *cp != '_' && *cp != '@' && *cp != '+' && *cp != ',')
+ cp++;
+
+ /* This does not make sense: language has to be specified. As
+ an exception we allow the variable to contain only the codeset
+ name. Perhaps there are funny codeset names. */
+ if (language == cp)
+ {
+ *lenp = strlen (language);
+ result = language;
+ }
+ else
+ {
+ /* Next is the territory. */
+ if (*cp == '_')
+ do
+ ++cp;
+ while (*cp && *cp != '.' && *cp != '@' && *cp != '+' && *cp != ',' && *cp != '_');
+
+ /* Now, finally, is the codeset. */
+ result = cp;
+ if (*cp == '.')
+ do
+ ++cp;
+ while (*cp && *cp != '@');
+
+ if (cp - result > 2)
+ {
+ result++;
+ *lenp = cp - result;
+ }
+ else
+ {
+ *lenp = strlen (language);
+ result = language;
+ }
+ }
+
+ return result;
+}
diff --git a/contrib/libreadline/parens.c b/contrib/libreadline/parens.c
new file mode 100644
index 0000000..50683f9
--- /dev/null
+++ b/contrib/libreadline/parens.c
@@ -0,0 +1,156 @@
+/* parens.c -- Implementation of matching parentheses feature. */
+
+/* Copyright (C) 1987, 1989, 1992 Free Software Foundation, Inc.
+
+ This file is part of the GNU Readline Library, a library for
+ reading lines of text with interactive input and history editing.
+
+ The GNU Readline Library is free software; you can redistribute it
+ and/or modify it under the terms of the GNU General Public License
+ as published by the Free Software Foundation; either version 1, or
+ (at your option) any later version.
+
+ The GNU Readline Library is distributed in the hope that it will be
+ useful, but WITHOUT ANY WARRANTY; without even the implied warranty
+ of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ The GNU General Public License is often shipped with GNU software, and
+ is generally kept in a file called COPYING or LICENSE. If you do not
+ have a copy of the license, write to the Free Software Foundation,
+ 675 Mass Ave, Cambridge, MA 02139, USA. */
+#define READLINE_LIBRARY
+
+#include "rlconf.h"
+
+#if !defined (PAREN_MATCHING)
+extern int rl_insert ();
+
+int
+rl_insert_close (count, invoking_key)
+ int count, invoking_key;
+{
+ return (rl_insert (count, invoking_key));
+}
+
+#else /* PAREN_MATCHING */
+
+#if defined (HAVE_CONFIG_H)
+# include <config.h>
+#endif
+
+#include <stdio.h>
+#include <sys/types.h>
+
+#if defined (FD_SET) && !defined (HAVE_SELECT)
+# define HAVE_SELECT
+#endif
+
+#if defined (HAVE_SELECT)
+# include <sys/time.h>
+#endif /* HAVE_SELECT */
+#if defined (HAVE_SYS_SELECT_H)
+# include <sys/select.h>
+#endif
+
+#if defined (HAVE_STRING_H)
+# include <string.h>
+#else /* !HAVE_STRING_H */
+# include <strings.h>
+#endif /* !HAVE_STRING_H */
+
+#if !defined (strchr) && !defined (__STDC__)
+extern char *strchr (), *strrchr ();
+#endif /* !strchr && !__STDC__ */
+
+#include "readline.h"
+
+extern int rl_explicit_arg;
+
+/* Non-zero means try to blink the matching open parenthesis when the
+ close parenthesis is inserted. */
+#if defined (HAVE_SELECT)
+int rl_blink_matching_paren = 1;
+#else /* !HAVE_SELECT */
+int rl_blink_matching_paren = 0;
+#endif /* !HAVE_SELECT */
+
+static int find_matching_open ();
+
+int
+rl_insert_close (count, invoking_key)
+ int count, invoking_key;
+{
+ if (rl_explicit_arg || !rl_blink_matching_paren)
+ rl_insert (count, invoking_key);
+ else
+ {
+#if defined (HAVE_SELECT)
+ int orig_point, match_point, ready;
+ struct timeval timer;
+ fd_set readfds;
+
+ rl_insert (1, invoking_key);
+ (*rl_redisplay_function) ();
+ match_point =
+ find_matching_open (rl_line_buffer, rl_point - 2, invoking_key);
+
+ /* Emacs might message or ring the bell here, but I don't. */
+ if (match_point < 0)
+ return -1;
+
+ FD_ZERO (&readfds);
+ FD_SET (fileno (rl_instream), &readfds);
+ timer.tv_sec = 1;
+ timer.tv_usec = 500;
+
+ orig_point = rl_point;
+ rl_point = match_point;
+ (*rl_redisplay_function) ();
+ ready = select (1, &readfds, (fd_set *)NULL, (fd_set *)NULL, &timer);
+ rl_point = orig_point;
+#else /* !HAVE_SELECT */
+ rl_insert (count, invoking_key);
+#endif /* !HAVE_SELECT */
+ }
+ return 0;
+}
+
+static int
+find_matching_open (string, from, closer)
+ char *string;
+ int from, closer;
+{
+ register int i;
+ int opener, level, delimiter;
+
+ switch (closer)
+ {
+ case ']': opener = '['; break;
+ case '}': opener = '{'; break;
+ case ')': opener = '('; break;
+ default:
+ return (-1);
+ }
+
+ level = 1; /* The closer passed in counts as 1. */
+ delimiter = 0; /* Delimited state unknown. */
+
+ for (i = from; i > -1; i--)
+ {
+ if (delimiter && (string[i] == delimiter))
+ delimiter = 0;
+ else if (rl_basic_quote_characters && strchr (rl_basic_quote_characters, string[i]))
+ delimiter = string[i];
+ else if (!delimiter && (string[i] == closer))
+ level++;
+ else if (!delimiter && (string[i] == opener))
+ level--;
+
+ if (!level)
+ break;
+ }
+ return (i);
+}
+
+#endif /* PAREN_MATCHING */
diff --git a/contrib/libreadline/posixdir.h b/contrib/libreadline/posixdir.h
new file mode 100644
index 0000000..8b0e5bc
--- /dev/null
+++ b/contrib/libreadline/posixdir.h
@@ -0,0 +1,49 @@
+/* posixdir.h -- Posix directory reading includes and defines. */
+
+/* Copyright (C) 1987,1991 Free Software Foundation, Inc.
+
+ This file is part of GNU Bash, the Bourne Again SHell.
+
+ Bash is free software; you can redistribute it and/or modify it
+ under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 1, or (at your option)
+ any later version.
+
+ Bash is distributed in the hope that it will be useful, but WITHOUT
+ ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
+ License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with Bash; see the file COPYING. If not, write to the Free
+ Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
+
+/* This file should be included instead of <dirent.h> or <sys/dir.h>. */
+
+#if !defined (_POSIXDIR_H_)
+#define _POSIXDIR_H_
+
+#if defined (HAVE_DIRENT_H)
+# include <dirent.h>
+# define D_NAMLEN(d) (strlen ((d)->d_name))
+#else
+# if defined (HAVE_SYS_NDIR_H)
+# include <sys/ndir.h>
+# endif
+# if defined (HAVE_SYS_DIR_H)
+# include <sys/dir.h>
+# endif
+# if defined (HAVE_NDIR_H)
+# include <ndir.h>
+# endif
+# if !defined (dirent)
+# define dirent direct
+# endif /* !dirent */
+# define D_NAMLEN(d) ((d)->d_namlen)
+#endif /* !HAVE_DIRENT_H */
+
+#if defined (STRUCT_DIRENT_HAS_D_INO)
+# define d_fileno d_ino
+#endif
+
+#endif /* !_POSIXDIR_H_ */
diff --git a/contrib/libreadline/posixstat.h b/contrib/libreadline/posixstat.h
new file mode 100644
index 0000000..bfce8c0
--- /dev/null
+++ b/contrib/libreadline/posixstat.h
@@ -0,0 +1,142 @@
+/* posixstat.h -- Posix stat(2) definitions for systems that
+ don't have them. */
+
+/* Copyright (C) 1987,1991 Free Software Foundation, Inc.
+
+ This file is part of GNU Bash, the Bourne Again SHell.
+
+ Bash is free software; you can redistribute it and/or modify it
+ under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 1, or (at your option)
+ any later version.
+
+ Bash is distributed in the hope that it will be useful, but WITHOUT
+ ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
+ License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with Bash; see the file COPYING. If not, write to the Free
+ Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
+
+/* This file should be included instead of <sys/stat.h>.
+ It relies on the local sys/stat.h to work though. */
+#if !defined (_POSIXSTAT_H_)
+#define _POSIXSTAT_H_
+
+#include <sys/stat.h>
+
+#if defined (STAT_MACROS_BROKEN)
+# undef S_ISBLK
+# undef S_ISCHR
+# undef S_ISDIR
+# undef S_ISFIFO
+# undef S_ISREG
+# undef S_ISLNK
+#endif /* STAT_MACROS_BROKEN */
+
+/* These are guaranteed to work only on isc386 */
+#if !defined (S_IFDIR) && !defined (S_ISDIR)
+# define S_IFDIR 0040000
+#endif /* !S_IFDIR && !S_ISDIR */
+#if !defined (S_IFMT)
+# define S_IFMT 0170000
+#endif /* !S_IFMT */
+
+/* Posix 1003.1 5.6.1.1 <sys/stat.h> file types */
+
+/* Some Posix-wannabe systems define _S_IF* macros instead of S_IF*, but
+ do not provide the S_IS* macros that Posix requires. */
+
+#if defined (_S_IFMT) && !defined (S_IFMT)
+#define S_IFMT _S_IFMT
+#endif
+#if defined (_S_IFIFO) && !defined (S_IFIFO)
+#define S_IFIFO _S_IFIFO
+#endif
+#if defined (_S_IFCHR) && !defined (S_IFCHR)
+#define S_IFCHR _S_IFCHR
+#endif
+#if defined (_S_IFDIR) && !defined (S_IFDIR)
+#define S_IFDIR _S_IFDIR
+#endif
+#if defined (_S_IFBLK) && !defined (S_IFBLK)
+#define S_IFBLK _S_IFBLK
+#endif
+#if defined (_S_IFREG) && !defined (S_IFREG)
+#define S_IFREG _S_IFREG
+#endif
+#if defined (_S_IFLNK) && !defined (S_IFLNK)
+#define S_IFLNK _S_IFLNK
+#endif
+#if defined (_S_IFSOCK) && !defined (S_IFSOCK)
+#define S_IFSOCK _S_IFSOCK
+#endif
+
+/* Test for each symbol individually and define the ones necessary (some
+ systems claiming Posix compatibility define some but not all). */
+
+#if defined (S_IFBLK) && !defined (S_ISBLK)
+#define S_ISBLK(m) (((m)&S_IFMT) == S_IFBLK) /* block device */
+#endif
+
+#if defined (S_IFCHR) && !defined (S_ISCHR)
+#define S_ISCHR(m) (((m)&S_IFMT) == S_IFCHR) /* character device */
+#endif
+
+#if defined (S_IFDIR) && !defined (S_ISDIR)
+#define S_ISDIR(m) (((m)&S_IFMT) == S_IFDIR) /* directory */
+#endif
+
+#if defined (S_IFREG) && !defined (S_ISREG)
+#define S_ISREG(m) (((m)&S_IFMT) == S_IFREG) /* file */
+#endif
+
+#if defined (S_IFIFO) && !defined (S_ISFIFO)
+#define S_ISFIFO(m) (((m)&S_IFMT) == S_IFIFO) /* fifo - named pipe */
+#endif
+
+#if defined (S_IFLNK) && !defined (S_ISLNK)
+#define S_ISLNK(m) (((m)&S_IFMT) == S_IFLNK) /* symbolic link */
+#endif
+
+#if defined (S_IFSOCK) && !defined (S_ISSOCK)
+#define S_ISSOCK(m) (((m)&S_IFMT) == S_IFSOCK) /* socket */
+#endif
+
+/*
+ * POSIX 1003.1 5.6.1.2 <sys/stat.h> File Modes
+ */
+
+#if !defined (S_IRWXU)
+# if !defined (S_IREAD)
+# define S_IREAD 00400
+# define S_IWRITE 00200
+# define S_IEXEC 00100
+# endif /* S_IREAD */
+
+# if !defined (S_IRUSR)
+# define S_IRUSR S_IREAD /* read, owner */
+# define S_IWUSR S_IWRITE /* write, owner */
+# define S_IXUSR S_IEXEC /* execute, owner */
+
+# define S_IRGRP (S_IREAD >> 3) /* read, group */
+# define S_IWGRP (S_IWRITE >> 3) /* write, group */
+# define S_IXGRP (S_IEXEC >> 3) /* execute, group */
+
+# define S_IROTH (S_IREAD >> 6) /* read, other */
+# define S_IWOTH (S_IWRITE >> 6) /* write, other */
+# define S_IXOTH (S_IEXEC >> 6) /* execute, other */
+# endif /* !S_IRUSR */
+
+# define S_IRWXU (S_IRUSR | S_IWUSR | S_IXUSR)
+# define S_IRWXG (S_IRGRP | S_IWGRP | S_IXGRP)
+# define S_IRWXO (S_IROTH | S_IWOTH | S_IXOTH)
+#endif /* !S_IRWXU */
+
+/* These are non-standard, but are used in builtins.c$symbolic_umask() */
+#define S_IRUGO (S_IRUSR | S_IRGRP | S_IROTH)
+#define S_IWUGO (S_IWUSR | S_IWGRP | S_IWOTH)
+#define S_IXUGO (S_IXUSR | S_IXGRP | S_IXOTH)
+
+#endif /* _POSIXSTAT_H_ */
diff --git a/contrib/libreadline/readline.c b/contrib/libreadline/readline.c
new file mode 100644
index 0000000..d85789d
--- /dev/null
+++ b/contrib/libreadline/readline.c
@@ -0,0 +1,2003 @@
+/* readline.c -- a general facility for reading lines of input
+ with emacs style editing and completion. */
+
+/* Copyright (C) 1987, 1989, 1992 Free Software Foundation, Inc.
+
+ This file is part of the GNU Readline Library, a library for
+ reading lines of text with interactive input and history editing.
+
+ The GNU Readline Library is free software; you can redistribute it
+ and/or modify it under the terms of the GNU General Public License
+ as published by the Free Software Foundation; either version 1, or
+ (at your option) any later version.
+
+ The GNU Readline Library is distributed in the hope that it will be
+ useful, but WITHOUT ANY WARRANTY; without even the implied warranty
+ of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ The GNU General Public License is often shipped with GNU software, and
+ is generally kept in a file called COPYING or LICENSE. If you do not
+ have a copy of the license, write to the Free Software Foundation,
+ 675 Mass Ave, Cambridge, MA 02139, USA. */
+#define READLINE_LIBRARY
+
+#if defined (HAVE_CONFIG_H)
+# include <config.h>
+#endif
+
+#include <sys/types.h>
+#include "posixstat.h"
+#include <fcntl.h>
+#if defined (HAVE_SYS_FILE_H)
+# include <sys/file.h>
+#endif /* HAVE_SYS_FILE_H */
+
+#if defined (HAVE_UNISTD_H)
+# include <unistd.h>
+#endif /* HAVE_UNISTD_H */
+
+#if defined (HAVE_STDLIB_H)
+# include <stdlib.h>
+#else
+# include "ansi_stdlib.h"
+#endif /* HAVE_STDLIB_H */
+
+#if defined (HAVE_LOCALE_H)
+# include <locale.h>
+#endif
+
+#include <signal.h>
+#include <stdio.h>
+#include <setjmp.h>
+
+/* System-specific feature definitions and include files. */
+#include "rldefs.h"
+
+#include "tcap.h"
+
+/* Some standard library routines. */
+#include "readline.h"
+#include "history.h"
+
+#define SWAP(s, e) do { int t; t = s; s = e; e = t; } while (0)
+
+/* NOTE: Functions and variables prefixed with `_rl_' are
+ pseudo-global: they are global so they can be shared
+ between files in the readline library, but are not intended
+ to be visible to readline callers. */
+
+/* Variables and functions imported from terminal.c */
+extern int _rl_init_terminal_io ();
+extern void _rl_enable_meta_key ();
+extern int _rl_output_character_function ();
+extern void _rl_get_screen_size ();
+
+extern int _rl_enable_meta;
+extern int _rl_term_autowrap;
+extern char *term_backspace, *term_clreol, *term_clrpag;
+extern int screenwidth, screenheight, screenchars;
+
+/* Variables and functions imported from rltty.c. */
+extern void rl_prep_terminal (), rl_deprep_terminal ();
+extern void rltty_set_default_bindings ();
+
+/* Functions imported from util.c. */
+extern void _rl_abort_internal ();
+extern void rl_extend_line_buffer ();
+extern int alphabetic ();
+
+/* Functions imported from bind.c. */
+extern void _rl_bind_if_unbound ();
+extern int rl_set_keymap_from_edit_mode ();
+
+/* Functions imported from input.c. */
+extern int _rl_any_typein ();
+extern void _rl_insert_typein ();
+extern int rl_read_key ();
+
+/* Functions imported from nls.c */
+extern int _rl_init_eightbit ();
+
+/* External redisplay functions and variables from display.c */
+extern void _rl_move_vert ();
+extern void _rl_update_final ();
+
+extern void _rl_erase_at_end_of_line ();
+extern void _rl_move_cursor_relative ();
+
+extern int _rl_vis_botlin;
+extern int _rl_last_c_pos;
+extern int _rl_horizontal_scroll_mode;
+extern int rl_display_fixed;
+extern int _rl_suppress_redisplay;
+extern char *rl_display_prompt;
+
+/* Variables imported from complete.c. */
+extern char *rl_completer_word_break_characters;
+extern char *rl_basic_word_break_characters;
+extern int rl_completion_query_items;
+extern int rl_complete_with_tilde_expansion;
+
+/* Variables and functions from macro.c. */
+extern void _rl_add_macro_char ();
+extern void _rl_with_macro_input ();
+extern int _rl_next_macro_key ();
+extern int _rl_defining_kbd_macro;
+
+#if defined (VI_MODE)
+/* Functions imported from vi_mode.c. */
+extern void _rl_vi_set_last ();
+extern void _rl_vi_reset_last ();
+extern void _rl_vi_done_inserting ();
+extern int _rl_vi_textmod_command ();
+extern void _rl_vi_initialize_line ();
+#endif /* VI_MODE */
+
+extern UNDO_LIST *rl_undo_list;
+extern int _rl_doing_an_undo;
+
+/* Forward declarations used in this file. */
+void _rl_free_history_entry ();
+
+int _rl_dispatch ();
+int _rl_init_argument ();
+
+static char *readline_internal ();
+static void readline_initialize_everything ();
+static void start_using_history ();
+static void bind_arrow_keys ();
+
+#if !defined (__GO32__)
+static void readline_default_bindings ();
+#endif /* !__GO32__ */
+
+#if defined (__GO32__)
+# include <pc.h>
+# undef HANDLE_SIGNALS
+#endif /* __GO32__ */
+
+extern char *xmalloc (), *xrealloc ();
+
+/* **************************************************************** */
+/* */
+/* Line editing input utility */
+/* */
+/* **************************************************************** */
+
+char *rl_library_version = "2.1";
+
+/* A pointer to the keymap that is currently in use.
+ By default, it is the standard emacs keymap. */
+Keymap _rl_keymap = emacs_standard_keymap;
+
+/* The current style of editing. */
+int rl_editing_mode = emacs_mode;
+
+/* Non-zero if the previous command was a kill command. */
+int _rl_last_command_was_kill = 0;
+
+/* The current value of the numeric argument specified by the user. */
+int rl_numeric_arg = 1;
+
+/* Non-zero if an argument was typed. */
+int rl_explicit_arg = 0;
+
+/* Temporary value used while generating the argument. */
+int rl_arg_sign = 1;
+
+/* Non-zero means we have been called at least once before. */
+static int rl_initialized;
+
+/* If non-zero, this program is running in an EMACS buffer. */
+static int running_in_emacs;
+
+/* The current offset in the current input line. */
+int rl_point;
+
+/* Mark in the current input line. */
+int rl_mark;
+
+/* Length of the current input line. */
+int rl_end;
+
+/* Make this non-zero to return the current input_line. */
+int rl_done;
+
+/* The last function executed by readline. */
+Function *rl_last_func = (Function *)NULL;
+
+/* Top level environment for readline_internal (). */
+jmp_buf readline_top_level;
+
+/* The streams we interact with. */
+FILE *_rl_in_stream, *_rl_out_stream;
+
+/* The names of the streams that we do input and output to. */
+FILE *rl_instream = (FILE *)NULL;
+FILE *rl_outstream = (FILE *)NULL;
+
+/* Non-zero means echo characters as they are read. */
+int readline_echoing_p = 1;
+
+/* Current prompt. */
+char *rl_prompt;
+int rl_visible_prompt_length = 0;
+
+/* The number of characters read in order to type this complete command. */
+int rl_key_sequence_length = 0;
+
+/* If non-zero, then this is the address of a function to call just
+ before readline_internal () prints the first prompt. */
+Function *rl_startup_hook = (Function *)NULL;
+
+/* What we use internally. You should always refer to RL_LINE_BUFFER. */
+static char *the_line;
+
+/* The character that can generate an EOF. Really read from
+ the terminal driver... just defaulted here. */
+int _rl_eof_char = CTRL ('D');
+
+/* Non-zero makes this the next keystroke to read. */
+int rl_pending_input = 0;
+
+/* Pointer to a useful terminal name. */
+char *rl_terminal_name = (char *)NULL;
+
+/* Non-zero means to always use horizontal scrolling in line display. */
+int _rl_horizontal_scroll_mode = 0;
+
+/* Non-zero means to display an asterisk at the starts of history lines
+ which have been modified. */
+int _rl_mark_modified_lines = 0;
+
+/* The style of `bell' notification preferred. This can be set to NO_BELL,
+ AUDIBLE_BELL, or VISIBLE_BELL. */
+int _rl_bell_preference = AUDIBLE_BELL;
+
+/* String inserted into the line by rl_insert_comment (). */
+char *_rl_comment_begin;
+
+/* Keymap holding the function currently being executed. */
+Keymap rl_executing_keymap;
+
+/* Line buffer and maintenence. */
+char *rl_line_buffer = (char *)NULL;
+int rl_line_buffer_len = 0;
+
+/* Forward declarations used by the display and termcap code. */
+
+/* **************************************************************** */
+/* */
+/* `Forward' declarations */
+/* */
+/* **************************************************************** */
+
+/* Non-zero means do not parse any lines other than comments and
+ parser directives. */
+unsigned char _rl_parsing_conditionalized_out = 0;
+
+/* Non-zero means to convert characters with the meta bit set to
+ escape-prefixed characters so we can indirect through
+ emacs_meta_keymap or vi_escape_keymap. */
+int _rl_convert_meta_chars_to_ascii = 1;
+
+/* Non-zero means to output characters with the meta bit set directly
+ rather than as a meta-prefixed escape sequence. */
+int _rl_output_meta_chars = 0;
+
+/* **************************************************************** */
+/* */
+/* Top Level Functions */
+/* */
+/* **************************************************************** */
+
+/* Non-zero means treat 0200 bit in terminal input as Meta bit. */
+int _rl_meta_flag = 0; /* Forward declaration */
+
+/* Read a line of input. Prompt with PROMPT. An empty PROMPT means
+ none. A return value of NULL means that EOF was encountered. */
+char *
+readline (prompt)
+ char *prompt;
+{
+ char *value;
+
+ rl_prompt = prompt;
+
+ /* If we are at EOF return a NULL string. */
+ if (rl_pending_input == EOF)
+ {
+ rl_pending_input = 0;
+ return ((char *)NULL);
+ }
+
+ rl_visible_prompt_length = rl_expand_prompt (rl_prompt);
+
+ rl_initialize ();
+ (*rl_prep_term_function) (_rl_meta_flag);
+
+#if defined (HANDLE_SIGNALS)
+ rl_set_signals ();
+#endif
+
+ value = readline_internal ();
+ (*rl_deprep_term_function) ();
+
+#if defined (HANDLE_SIGNALS)
+ rl_clear_signals ();
+#endif
+
+ return (value);
+}
+
+#if defined (READLINE_CALLBACKS)
+# define STATIC_CALLBACK
+#else
+# define STATIC_CALLBACK static
+#endif
+
+STATIC_CALLBACK void
+readline_internal_setup ()
+{
+ _rl_in_stream = rl_instream;
+ _rl_out_stream = rl_outstream;
+
+ if (rl_startup_hook)
+ (*rl_startup_hook) ();
+
+ if (readline_echoing_p == 0)
+ {
+ if (rl_prompt)
+ {
+ fprintf (_rl_out_stream, "%s", rl_prompt);
+ fflush (_rl_out_stream);
+ }
+ }
+ else
+ {
+ rl_on_new_line ();
+ (*rl_redisplay_function) ();
+#if defined (VI_MODE)
+ if (rl_editing_mode == vi_mode)
+ rl_vi_insertion_mode ();
+#endif /* VI_MODE */
+ }
+}
+
+STATIC_CALLBACK char *
+readline_internal_teardown (eof)
+ int eof;
+{
+ char *temp;
+ HIST_ENTRY *entry;
+
+ /* Restore the original of this history line, iff the line that we
+ are editing was originally in the history, AND the line has changed. */
+ entry = current_history ();
+
+ if (entry && rl_undo_list)
+ {
+ temp = savestring (the_line);
+ rl_revert_line (1, 0);
+ entry = replace_history_entry (where_history (), the_line, (HIST_ENTRY *)NULL);
+ _rl_free_history_entry (entry);
+
+ strcpy (the_line, temp);
+ free (temp);
+ }
+
+ /* At any rate, it is highly likely that this line has an undo list. Get
+ rid of it now. */
+ if (rl_undo_list)
+ free_undo_list ();
+
+ return (eof ? (char *)NULL : savestring (the_line));
+}
+
+STATIC_CALLBACK int
+#if defined (READLINE_CALLBACKS)
+readline_internal_char ()
+#else
+readline_internal_charloop ()
+#endif
+{
+ static int lastc, eof_found;
+ int c, code, lk;
+
+ lastc = -1;
+ eof_found = 0;
+
+#if !defined (READLINE_CALLBACKS)
+ while (rl_done == 0)
+ {
+#endif
+ lk = _rl_last_command_was_kill;
+
+ code = setjmp (readline_top_level);
+
+ if (code)
+ (*rl_redisplay_function) ();
+
+ if (rl_pending_input == 0)
+ {
+ /* Then initialize the argument and number of keys read. */
+ _rl_init_argument ();
+ rl_key_sequence_length = 0;
+ }
+
+ c = rl_read_key ();
+
+ /* EOF typed to a non-blank line is a <NL>. */
+ if (c == EOF && rl_end)
+ c = NEWLINE;
+
+ /* The character _rl_eof_char typed to blank line, and not as the
+ previous character is interpreted as EOF. */
+ if (((c == _rl_eof_char && lastc != c) || c == EOF) && !rl_end)
+ {
+#if defined (READLINE_CALLBACKS)
+ return (rl_done = 1);
+#else
+ eof_found = 1;
+ break;
+#endif
+ }
+
+ lastc = c;
+ _rl_dispatch (c, _rl_keymap);
+
+ /* If there was no change in _rl_last_command_was_kill, then no kill
+ has taken place. Note that if input is pending we are reading
+ a prefix command, so nothing has changed yet. */
+ if (rl_pending_input == 0 && lk == _rl_last_command_was_kill)
+ _rl_last_command_was_kill = 0;
+
+#if defined (VI_MODE)
+ /* In vi mode, when you exit insert mode, the cursor moves back
+ over the previous character. We explicitly check for that here. */
+ if (rl_editing_mode == vi_mode && _rl_keymap == vi_movement_keymap)
+ rl_vi_check ();
+#endif /* VI_MODE */
+
+ if (rl_done == 0)
+ (*rl_redisplay_function) ();
+
+#if defined (READLINE_CALLBACKS)
+ return 0;
+#else
+ }
+
+ return (eof_found);
+#endif
+}
+
+#if defined (READLINE_CALLBACKS)
+static int
+readline_internal_charloop ()
+{
+ int eof;
+
+ while (rl_done == 0)
+ eof = readline_internal_char ();
+ return (eof);
+}
+#endif /* READLINE_CALLBACKS */
+
+/* Read a line of input from the global rl_instream, doing output on
+ the global rl_outstream.
+ If rl_prompt is non-null, then that is our prompt. */
+static char *
+readline_internal ()
+{
+ int eof;
+
+ readline_internal_setup ();
+ eof = readline_internal_charloop ();
+ return (readline_internal_teardown (eof));
+}
+
+void
+_rl_set_the_line ()
+{
+ the_line = rl_line_buffer;
+}
+
+/* Do the command associated with KEY in MAP.
+ If the associated command is really a keymap, then read
+ another key, and dispatch into that map. */
+int
+_rl_dispatch (key, map)
+ register int key;
+ Keymap map;
+{
+ int r, newkey;
+ char *macro;
+ Function *func;
+
+ if (META_CHAR (key) && _rl_convert_meta_chars_to_ascii)
+ {
+ if (map[ESC].type == ISKMAP)
+ {
+ if (_rl_defining_kbd_macro)
+ _rl_add_macro_char (ESC);
+ map = FUNCTION_TO_KEYMAP (map, ESC);
+ key = UNMETA (key);
+ rl_key_sequence_length += 2;
+ return (_rl_dispatch (key, map));
+ }
+ else
+ ding ();
+ return 0;
+ }
+
+ if (_rl_defining_kbd_macro)
+ _rl_add_macro_char (key);
+
+ r = 0;
+ switch (map[key].type)
+ {
+ case ISFUNC:
+ func = map[key].function;
+ if (func != (Function *)NULL)
+ {
+ /* Special case rl_do_lowercase_version (). */
+ if (func == rl_do_lowercase_version)
+ return (_rl_dispatch (_rl_to_lower (key), map));
+
+ rl_executing_keymap = map;
+
+#if 0
+ _rl_suppress_redisplay = (map[key].function == rl_insert) && _rl_input_available ();
+#endif
+
+ r = (*map[key].function)(rl_numeric_arg * rl_arg_sign, key);
+
+ /* If we have input pending, then the last command was a prefix
+ command. Don't change the state of rl_last_func. Otherwise,
+ remember the last command executed in this variable. */
+ if (!rl_pending_input)
+ rl_last_func = map[key].function;
+ }
+ else
+ {
+ _rl_abort_internal ();
+ return -1;
+ }
+ break;
+
+ case ISKMAP:
+ if (map[key].function != (Function *)NULL)
+ {
+ rl_key_sequence_length++;
+ newkey = rl_read_key ();
+ r = _rl_dispatch (newkey, FUNCTION_TO_KEYMAP (map, key));
+ }
+ else
+ {
+ _rl_abort_internal ();
+ return -1;
+ }
+ break;
+
+ case ISMACR:
+ if (map[key].function != (Function *)NULL)
+ {
+ macro = savestring ((char *)map[key].function);
+ _rl_with_macro_input (macro);
+ return 0;
+ }
+ break;
+ }
+#if defined (VI_MODE)
+ if (rl_editing_mode == vi_mode && _rl_keymap == vi_movement_keymap &&
+ _rl_vi_textmod_command (key))
+ _rl_vi_set_last (key, rl_numeric_arg, rl_arg_sign);
+#endif
+ return (r);
+}
+
+/* **************************************************************** */
+/* */
+/* Initializations */
+/* */
+/* **************************************************************** */
+
+/* Initliaze readline (and terminal if not already). */
+int
+rl_initialize ()
+{
+ /* If we have never been called before, initialize the
+ terminal and data structures. */
+ if (!rl_initialized)
+ {
+ readline_initialize_everything ();
+ rl_initialized++;
+ }
+
+ /* Initalize the current line information. */
+ rl_point = rl_end = 0;
+ the_line = rl_line_buffer;
+ the_line[0] = 0;
+
+ /* We aren't done yet. We haven't even gotten started yet! */
+ rl_done = 0;
+
+ /* Tell the history routines what is going on. */
+ start_using_history ();
+
+ /* Make the display buffer match the state of the line. */
+ rl_reset_line_state ();
+
+ /* No such function typed yet. */
+ rl_last_func = (Function *)NULL;
+
+ /* Parsing of key-bindings begins in an enabled state. */
+ _rl_parsing_conditionalized_out = 0;
+
+#if defined (VI_MODE)
+ if (rl_editing_mode == vi_mode)
+ _rl_vi_initialize_line ();
+#endif
+
+ return 0;
+}
+
+/* Initialize the entire state of the world. */
+static void
+readline_initialize_everything ()
+{
+ /* Find out if we are running in Emacs. */
+ running_in_emacs = getenv ("EMACS") != (char *)0;
+
+ /* Set up input and output if they are not already set up. */
+ if (!rl_instream)
+ rl_instream = stdin;
+
+ if (!rl_outstream)
+ rl_outstream = stdout;
+
+ /* Bind _rl_in_stream and _rl_out_stream immediately. These values
+ may change, but they may also be used before readline_internal ()
+ is called. */
+ _rl_in_stream = rl_instream;
+ _rl_out_stream = rl_outstream;
+
+ /* Allocate data structures. */
+ if (!rl_line_buffer)
+ rl_line_buffer = xmalloc (rl_line_buffer_len = DEFAULT_BUFFER_SIZE);
+
+ /* Initialize the terminal interface. */
+ _rl_init_terminal_io ((char *)NULL);
+
+#if !defined (__GO32__)
+ /* Bind tty characters to readline functions. */
+ readline_default_bindings ();
+#endif /* !__GO32__ */
+
+ /* Initialize the function names. */
+ rl_initialize_funmap ();
+
+ /* Decide whether we should automatically go into eight-bit mode. */
+ _rl_init_eightbit ();
+
+ /* Read in the init file. */
+ rl_read_init_file ((char *)NULL);
+
+ /* XXX */
+ if (_rl_horizontal_scroll_mode && _rl_term_autowrap)
+ {
+ screenwidth--;
+ screenchars -= screenheight;
+ }
+
+ /* Override the effect of any `set keymap' assignments in the
+ inputrc file. */
+ rl_set_keymap_from_edit_mode ();
+
+ /* Try to bind a common arrow key prefix, if not already bound. */
+ bind_arrow_keys ();
+
+ /* Enable the meta key, if this terminal has one. */
+ if (_rl_enable_meta)
+ _rl_enable_meta_key ();
+
+ /* If the completion parser's default word break characters haven't
+ been set yet, then do so now. */
+ if (rl_completer_word_break_characters == (char *)NULL)
+ rl_completer_word_break_characters = rl_basic_word_break_characters;
+}
+
+/* If this system allows us to look at the values of the regular
+ input editing characters, then bind them to their readline
+ equivalents, iff the characters are not bound to keymaps. */
+static void
+readline_default_bindings ()
+{
+ rltty_set_default_bindings (_rl_keymap);
+}
+
+static void
+bind_arrow_keys_internal ()
+{
+ Function *f;
+
+ f = rl_function_of_keyseq ("\033[A", _rl_keymap, (int *)NULL);
+ if (!f || f == rl_do_lowercase_version)
+ {
+ _rl_bind_if_unbound ("\033[A", rl_get_previous_history);
+ _rl_bind_if_unbound ("\033[B", rl_get_next_history);
+ _rl_bind_if_unbound ("\033[C", rl_forward);
+ _rl_bind_if_unbound ("\033[D", rl_backward);
+ }
+
+ f = rl_function_of_keyseq ("\033OA", _rl_keymap, (int *)NULL);
+ if (!f || f == rl_do_lowercase_version)
+ {
+ _rl_bind_if_unbound ("\033OA", rl_get_previous_history);
+ _rl_bind_if_unbound ("\033OB", rl_get_next_history);
+ _rl_bind_if_unbound ("\033OC", rl_forward);
+ _rl_bind_if_unbound ("\033OD", rl_backward);
+ }
+}
+
+/* Try and bind the common arrow key prefix after giving termcap and
+ the inputrc file a chance to bind them and create `real' keymaps
+ for the arrow key prefix. */
+static void
+bind_arrow_keys ()
+{
+ Keymap xkeymap;
+
+ xkeymap = _rl_keymap;
+
+ _rl_keymap = emacs_standard_keymap;
+ bind_arrow_keys_internal ();
+
+#if defined (VI_MODE)
+ _rl_keymap = vi_movement_keymap;
+ bind_arrow_keys_internal ();
+#endif
+
+ _rl_keymap = xkeymap;
+}
+
+
+/* **************************************************************** */
+/* */
+/* Numeric Arguments */
+/* */
+/* **************************************************************** */
+
+/* Handle C-u style numeric args, as well as M--, and M-digits. */
+static int
+rl_digit_loop ()
+{
+ int key, c, sawminus;
+
+ _rl_save_prompt ();
+
+ sawminus = 0;
+ while (1)
+ {
+ rl_message ("(arg: %d) ", rl_arg_sign * rl_numeric_arg);
+ key = c = rl_read_key ();
+
+ if (_rl_keymap[c].type == ISFUNC &&
+ _rl_keymap[c].function == rl_universal_argument)
+ {
+ rl_numeric_arg *= 4;
+ continue;
+ }
+ c = UNMETA (c);
+ if (_rl_digit_p (c))
+ {
+ rl_numeric_arg = rl_explicit_arg ? (rl_numeric_arg * 10) + c - '0' : c - '0';
+ rl_explicit_arg = 1;
+ }
+ else
+ {
+ if (c == '-' && rl_explicit_arg == 0)
+ {
+ rl_numeric_arg = sawminus = 1;
+ rl_arg_sign = -1;
+ }
+ else
+ {
+ /* Make M-- command equivalent to M--1 command. */
+ if (sawminus && rl_numeric_arg == 1 && rl_explicit_arg == 0)
+ rl_explicit_arg = 1;
+ _rl_restore_prompt ();
+ rl_clear_message ();
+ return (_rl_dispatch (key, _rl_keymap));
+ }
+ }
+ }
+
+ return 0;
+}
+
+/* Add the current digit to the argument in progress. */
+int
+rl_digit_argument (ignore, key)
+ int ignore, key;
+{
+ rl_pending_input = key;
+ return (rl_digit_loop ());
+}
+
+/* What to do when you abort reading an argument. */
+int
+rl_discard_argument ()
+{
+ ding ();
+ rl_clear_message ();
+ _rl_init_argument ();
+ return 0;
+}
+
+/* Create a default argument. */
+int
+_rl_init_argument ()
+{
+ rl_numeric_arg = rl_arg_sign = 1;
+ rl_explicit_arg = 0;
+ return 0;
+}
+
+/* C-u, universal argument. Multiply the current argument by 4.
+ Read a key. If the key has nothing to do with arguments, then
+ dispatch on it. If the key is the abort character then abort. */
+int
+rl_universal_argument (count, key)
+ int count, key;
+{
+ rl_numeric_arg *= 4;
+ return (rl_digit_loop ());
+}
+
+/* **************************************************************** */
+/* */
+/* Insert and Delete */
+/* */
+/* **************************************************************** */
+
+/* Insert a string of text into the line at point. This is the only
+ way that you should do insertion. rl_insert () calls this
+ function. */
+int
+rl_insert_text (string)
+ char *string;
+{
+ register int i, l = strlen (string);
+
+ if (rl_end + l >= rl_line_buffer_len)
+ rl_extend_line_buffer (rl_end + l);
+
+ for (i = rl_end; i >= rl_point; i--)
+ the_line[i + l] = the_line[i];
+ strncpy (the_line + rl_point, string, l);
+
+ /* Remember how to undo this if we aren't undoing something. */
+ if (!_rl_doing_an_undo)
+ {
+ /* If possible and desirable, concatenate the undos. */
+ if ((l == 1) &&
+ rl_undo_list &&
+ (rl_undo_list->what == UNDO_INSERT) &&
+ (rl_undo_list->end == rl_point) &&
+ (rl_undo_list->end - rl_undo_list->start < 20))
+ rl_undo_list->end++;
+ else
+ rl_add_undo (UNDO_INSERT, rl_point, rl_point + l, (char *)NULL);
+ }
+ rl_point += l;
+ rl_end += l;
+ the_line[rl_end] = '\0';
+ return l;
+}
+
+/* Delete the string between FROM and TO. FROM is
+ inclusive, TO is not. */
+int
+rl_delete_text (from, to)
+ int from, to;
+{
+ register char *text;
+ register int diff, i;
+
+ /* Fix it if the caller is confused. */
+ if (from > to)
+ SWAP (from, to);
+
+ /* fix boundaries */
+ if (to > rl_end)
+ {
+ to = rl_end;
+ if (from > to)
+ from = to;
+ }
+
+ text = rl_copy_text (from, to);
+
+ /* Some versions of strncpy() can't handle overlapping arguments. */
+ diff = to - from;
+ for (i = from; i < rl_end - diff; i++)
+ the_line[i] = the_line[i + diff];
+
+ /* Remember how to undo this delete. */
+ if (_rl_doing_an_undo == 0)
+ rl_add_undo (UNDO_DELETE, from, to, text);
+ else
+ free (text);
+
+ rl_end -= diff;
+ the_line[rl_end] = '\0';
+ return (diff);
+}
+
+/* **************************************************************** */
+/* */
+/* Readline character functions */
+/* */
+/* **************************************************************** */
+
+/* This is not a gap editor, just a stupid line input routine. No hair
+ is involved in writing any of the functions, and none should be. */
+
+/* Note that:
+
+ rl_end is the place in the string that we would place '\0';
+ i.e., it is always safe to place '\0' there.
+
+ rl_point is the place in the string where the cursor is. Sometimes
+ this is the same as rl_end.
+
+ Any command that is called interactively receives two arguments.
+ The first is a count: the numeric arg pased to this command.
+ The second is the key which invoked this command.
+*/
+
+/* **************************************************************** */
+/* */
+/* Movement Commands */
+/* */
+/* **************************************************************** */
+
+/* Note that if you `optimize' the display for these functions, you cannot
+ use said functions in other functions which do not do optimizing display.
+ I.e., you will have to update the data base for rl_redisplay, and you
+ might as well let rl_redisplay do that job. */
+
+/* Move forward COUNT characters. */
+int
+rl_forward (count, key)
+ int count, key;
+{
+ if (count < 0)
+ rl_backward (-count, key);
+ else if (count > 0)
+ {
+ int end = rl_point + count;
+#if defined (VI_MODE)
+ int lend = rl_end - (rl_editing_mode == vi_mode);
+#else
+ int lend = rl_end;
+#endif
+
+ if (end > lend)
+ {
+ rl_point = lend;
+ ding ();
+ }
+ else
+ rl_point = end;
+ }
+ return 0;
+}
+
+/* Move backward COUNT characters. */
+int
+rl_backward (count, key)
+ int count, key;
+{
+ if (count < 0)
+ rl_forward (-count, key);
+ else if (count > 0)
+ {
+ if (rl_point < count)
+ {
+ rl_point = 0;
+ ding ();
+ }
+ else
+ rl_point -= count;
+ }
+ return 0;
+}
+
+/* Move to the beginning of the line. */
+int
+rl_beg_of_line (count, key)
+ int count, key;
+{
+ rl_point = 0;
+ return 0;
+}
+
+/* Move to the end of the line. */
+int
+rl_end_of_line (count, key)
+ int count, key;
+{
+ rl_point = rl_end;
+ return 0;
+}
+
+/* Move forward a word. We do what Emacs does. */
+int
+rl_forward_word (count, key)
+ int count, key;
+{
+ int c;
+
+ if (count < 0)
+ {
+ rl_backward_word (-count, key);
+ return 0;
+ }
+
+ while (count)
+ {
+ if (rl_point == rl_end)
+ return 0;
+
+ /* If we are not in a word, move forward until we are in one.
+ Then, move forward until we hit a non-alphabetic character. */
+ c = the_line[rl_point];
+ if (alphabetic (c) == 0)
+ {
+ while (++rl_point < rl_end)
+ {
+ c = the_line[rl_point];
+ if (alphabetic (c))
+ break;
+ }
+ }
+ if (rl_point == rl_end)
+ return 0;
+ while (++rl_point < rl_end)
+ {
+ c = the_line[rl_point];
+ if (alphabetic (c) == 0)
+ break;
+ }
+ --count;
+ }
+ return 0;
+}
+
+/* Move backward a word. We do what Emacs does. */
+int
+rl_backward_word (count, key)
+ int count, key;
+{
+ int c;
+
+ if (count < 0)
+ {
+ rl_forward_word (-count, key);
+ return 0;
+ }
+
+ while (count)
+ {
+ if (!rl_point)
+ return 0;
+
+ /* Like rl_forward_word (), except that we look at the characters
+ just before point. */
+
+ c = the_line[rl_point - 1];
+ if (alphabetic (c) == 0)
+ {
+ while (--rl_point)
+ {
+ c = the_line[rl_point - 1];
+ if (alphabetic (c))
+ break;
+ }
+ }
+
+ while (rl_point)
+ {
+ c = the_line[rl_point - 1];
+ if (alphabetic (c) == 0)
+ break;
+ else
+ --rl_point;
+ }
+ --count;
+ }
+ return 0;
+}
+
+/* Clear the current line. Numeric argument to C-l does this. */
+int
+rl_refresh_line ()
+{
+ int curr_line, nleft;
+
+ /* Find out whether or not there might be invisible characters in the
+ editing buffer. */
+ if (rl_display_prompt == rl_prompt)
+ nleft = _rl_last_c_pos - screenwidth - rl_visible_prompt_length;
+ else
+ nleft = _rl_last_c_pos - screenwidth;
+
+ if (nleft > 0)
+ curr_line = 1 + nleft / screenwidth;
+ else
+ curr_line = 0;
+
+ _rl_move_vert (curr_line);
+ _rl_move_cursor_relative (0, the_line); /* XXX is this right */
+
+#if defined (__GO32__)
+ {
+ int row, col, width, row_start;
+
+ ScreenGetCursor (&row, &col);
+ width = ScreenCols ();
+ row_start = ScreenPrimary + (row * width);
+ memset (row_start + col, 0, (width - col) * 2);
+ }
+#else /* !__GO32__ */
+ if (term_clreol)
+ tputs (term_clreol, 1, _rl_output_character_function);
+#endif /* !__GO32__ */
+
+ rl_forced_update_display ();
+ rl_display_fixed = 1;
+
+ return 0;
+}
+
+/* C-l typed to a line without quoting clears the screen, and then reprints
+ the prompt and the current input line. Given a numeric arg, redraw only
+ the current line. */
+int
+rl_clear_screen (count, key)
+ int count, key;
+{
+ if (rl_explicit_arg)
+ {
+ rl_refresh_line ();
+ return 0;
+ }
+
+#if !defined (__GO32__)
+ if (term_clrpag)
+ tputs (term_clrpag, 1, _rl_output_character_function);
+ else
+#endif /* !__GO32__ */
+ crlf ();
+
+ rl_forced_update_display ();
+ rl_display_fixed = 1;
+
+ return 0;
+}
+
+int
+rl_arrow_keys (count, c)
+ int count, c;
+{
+ int ch;
+
+ ch = rl_read_key ();
+
+ switch (_rl_to_upper (ch))
+ {
+ case 'A':
+ rl_get_previous_history (count, ch);
+ break;
+
+ case 'B':
+ rl_get_next_history (count, ch);
+ break;
+
+ case 'C':
+ rl_forward (count, ch);
+ break;
+
+ case 'D':
+ rl_backward (count, ch);
+ break;
+
+ default:
+ ding ();
+ }
+ return 0;
+}
+
+
+/* **************************************************************** */
+/* */
+/* Text commands */
+/* */
+/* **************************************************************** */
+
+/* Insert the character C at the current location, moving point forward. */
+int
+rl_insert (count, c)
+ int count, c;
+{
+ register int i;
+ char *string;
+
+ if (count <= 0)
+ return 0;
+
+ /* If we can optimize, then do it. But don't let people crash
+ readline because of extra large arguments. */
+ if (count > 1 && count <= 1024)
+ {
+ string = xmalloc (1 + count);
+
+ for (i = 0; i < count; i++)
+ string[i] = c;
+
+ string[i] = '\0';
+ rl_insert_text (string);
+ free (string);
+
+ return 0;
+ }
+
+ if (count > 1024)
+ {
+ int decreaser;
+ char str[1024+1];
+
+ for (i = 0; i < 1024; i++)
+ str[i] = c;
+
+ while (count)
+ {
+ decreaser = (count > 1024 ? 1024 : count);
+ str[decreaser] = '\0';
+ rl_insert_text (str);
+ count -= decreaser;
+ }
+
+ return 0;
+ }
+
+ /* We are inserting a single character.
+ If there is pending input, then make a string of all of the
+ pending characters that are bound to rl_insert, and insert
+ them all. */
+ if (_rl_any_typein ())
+ _rl_insert_typein (c);
+ else
+ {
+ /* Inserting a single character. */
+ char str[2];
+
+ str[1] = '\0';
+ str[0] = c;
+ rl_insert_text (str);
+ }
+ return 0;
+}
+
+/* Insert the next typed character verbatim. */
+int
+rl_quoted_insert (count, key)
+ int count, key;
+{
+ int c;
+
+ c = rl_read_key ();
+ return (rl_insert (count, c));
+}
+
+/* Insert a tab character. */
+int
+rl_tab_insert (count, key)
+ int count, key;
+{
+ return (rl_insert (count, '\t'));
+}
+
+/* What to do when a NEWLINE is pressed. We accept the whole line.
+ KEY is the key that invoked this command. I guess it could have
+ meaning in the future. */
+int
+rl_newline (count, key)
+ int count, key;
+{
+ rl_done = 1;
+
+#if defined (VI_MODE)
+ _rl_vi_done_inserting ();
+ _rl_vi_reset_last ();
+#endif /* VI_MODE */
+
+ if (readline_echoing_p)
+ _rl_update_final ();
+ return 0;
+}
+
+/* What to do for some uppercase characters, like meta characters,
+ and some characters appearing in emacs_ctlx_keymap. This function
+ is just a stub, you bind keys to it and the code in _rl_dispatch ()
+ is special cased. */
+int
+rl_do_lowercase_version (ignore1, ignore2)
+ int ignore1, ignore2;
+{
+ return 0;
+}
+
+/* Rubout the character behind point. */
+int
+rl_rubout (count, key)
+ int count, key;
+{
+ if (count < 0)
+ {
+ rl_delete (-count, key);
+ return 0;
+ }
+
+ if (!rl_point)
+ {
+ ding ();
+ return -1;
+ }
+
+ if (count > 1 || rl_explicit_arg)
+ {
+ int orig_point = rl_point;
+ rl_backward (count, key);
+ rl_kill_text (orig_point, rl_point);
+ }
+ else
+ {
+ int c = the_line[--rl_point];
+ rl_delete_text (rl_point, rl_point + 1);
+
+ if (rl_point == rl_end && isprint (c) && _rl_last_c_pos)
+ {
+ int l;
+ l = rl_character_len (c, rl_point);
+ _rl_erase_at_end_of_line (l);
+ }
+ }
+ return 0;
+}
+
+/* Delete the character under the cursor. Given a numeric argument,
+ kill that many characters instead. */
+int
+rl_delete (count, key)
+ int count, key;
+{
+ if (count < 0)
+ return (rl_rubout (-count, key));
+
+ if (rl_point == rl_end)
+ {
+ ding ();
+ return -1;
+ }
+
+ if (count > 1 || rl_explicit_arg)
+ {
+ int orig_point = rl_point;
+ rl_forward (count, key);
+ rl_kill_text (orig_point, rl_point);
+ rl_point = orig_point;
+ return 0;
+ }
+ else
+ return (rl_delete_text (rl_point, rl_point + 1));
+
+}
+
+/* Delete all spaces and tabs around point. */
+int
+rl_delete_horizontal_space (count, ignore)
+ int count, ignore;
+{
+ int start = rl_point;
+
+ while (rl_point && whitespace (the_line[rl_point - 1]))
+ rl_point--;
+
+ start = rl_point;
+
+ while (rl_point < rl_end && whitespace (the_line[rl_point]))
+ rl_point++;
+
+ if (start != rl_point)
+ {
+ rl_delete_text (start, rl_point);
+ rl_point = start;
+ }
+ return 0;
+}
+
+#ifndef RL_COMMENT_BEGIN_DEFAULT
+#define RL_COMMENT_BEGIN_DEFAULT "#"
+#endif
+
+/* Turn the current line into a comment in shell history.
+ A K*rn shell style function. */
+int
+rl_insert_comment (count, key)
+ int count, key;
+{
+ rl_beg_of_line (1, key);
+ rl_insert_text (_rl_comment_begin ? _rl_comment_begin
+ : RL_COMMENT_BEGIN_DEFAULT);
+ (*rl_redisplay_function) ();
+ rl_newline (1, '\n');
+ return (0);
+}
+
+/* **************************************************************** */
+/* */
+/* Changing Case */
+/* */
+/* **************************************************************** */
+
+/* The three kinds of things that we know how to do. */
+#define UpCase 1
+#define DownCase 2
+#define CapCase 3
+
+static int rl_change_case ();
+
+/* Uppercase the word at point. */
+int
+rl_upcase_word (count, key)
+ int count, key;
+{
+ return (rl_change_case (count, UpCase));
+}
+
+/* Lowercase the word at point. */
+int
+rl_downcase_word (count, key)
+ int count, key;
+{
+ return (rl_change_case (count, DownCase));
+}
+
+/* Upcase the first letter, downcase the rest. */
+int
+rl_capitalize_word (count, key)
+ int count, key;
+{
+ return (rl_change_case (count, CapCase));
+}
+
+/* The meaty function.
+ Change the case of COUNT words, performing OP on them.
+ OP is one of UpCase, DownCase, or CapCase.
+ If a negative argument is given, leave point where it started,
+ otherwise, leave it where it moves to. */
+static int
+rl_change_case (count, op)
+ int count, op;
+{
+ register int start, end;
+ int inword, c;
+
+ start = rl_point;
+ rl_forward_word (count, 0);
+ end = rl_point;
+
+ if (count < 0)
+ SWAP (start, end);
+
+ /* We are going to modify some text, so let's prepare to undo it. */
+ rl_modifying (start, end);
+
+ for (inword = 0; start < end; start++)
+ {
+ c = the_line[start];
+ switch (op)
+ {
+ case UpCase:
+ the_line[start] = _rl_to_upper (c);
+ break;
+
+ case DownCase:
+ the_line[start] = _rl_to_lower (c);
+ break;
+
+ case CapCase:
+ the_line[start] = (inword == 0) ? _rl_to_upper (c) : _rl_to_lower (c);
+ inword = alphabetic (the_line[start]);
+ break;
+
+ default:
+ ding ();
+ return -1;
+ }
+ }
+ rl_point = end;
+ return 0;
+}
+
+/* **************************************************************** */
+/* */
+/* Transposition */
+/* */
+/* **************************************************************** */
+
+/* Transpose the words at point. */
+int
+rl_transpose_words (count, key)
+ int count, key;
+{
+ char *word1, *word2;
+ int w1_beg, w1_end, w2_beg, w2_end;
+ int orig_point = rl_point;
+
+ if (!count)
+ return 0;
+
+ /* Find the two words. */
+ rl_forward_word (count, key);
+ w2_end = rl_point;
+ rl_backward_word (1, key);
+ w2_beg = rl_point;
+ rl_backward_word (count, key);
+ w1_beg = rl_point;
+ rl_forward_word (1, key);
+ w1_end = rl_point;
+
+ /* Do some check to make sure that there really are two words. */
+ if ((w1_beg == w2_beg) || (w2_beg < w1_end))
+ {
+ ding ();
+ rl_point = orig_point;
+ return -1;
+ }
+
+ /* Get the text of the words. */
+ word1 = rl_copy_text (w1_beg, w1_end);
+ word2 = rl_copy_text (w2_beg, w2_end);
+
+ /* We are about to do many insertions and deletions. Remember them
+ as one operation. */
+ rl_begin_undo_group ();
+
+ /* Do the stuff at word2 first, so that we don't have to worry
+ about word1 moving. */
+ rl_point = w2_beg;
+ rl_delete_text (w2_beg, w2_end);
+ rl_insert_text (word1);
+
+ rl_point = w1_beg;
+ rl_delete_text (w1_beg, w1_end);
+ rl_insert_text (word2);
+
+ /* This is exactly correct since the text before this point has not
+ changed in length. */
+ rl_point = w2_end;
+
+ /* I think that does it. */
+ rl_end_undo_group ();
+ free (word1);
+ free (word2);
+
+ return 0;
+}
+
+/* Transpose the characters at point. If point is at the end of the line,
+ then transpose the characters before point. */
+int
+rl_transpose_chars (count, key)
+ int count, key;
+{
+ char dummy[2];
+
+ if (!count)
+ return 0;
+
+ if (!rl_point || rl_end < 2)
+ {
+ ding ();
+ return -1;
+ }
+
+ rl_begin_undo_group ();
+
+ if (rl_point == rl_end)
+ {
+ --rl_point;
+ count = 1;
+ }
+ rl_point--;
+
+ dummy[0] = the_line[rl_point];
+ dummy[1] = '\0';
+
+ rl_delete_text (rl_point, rl_point + 1);
+
+ rl_point += count;
+ if (rl_point > rl_end)
+ rl_point = rl_end;
+ else if (rl_point < 0)
+ rl_point = 0;
+ rl_insert_text (dummy);
+
+ rl_end_undo_group ();
+ return 0;
+}
+
+/* **************************************************************** */
+/* */
+/* Character Searching */
+/* */
+/* **************************************************************** */
+
+int
+_rl_char_search_internal (count, dir, schar)
+ int count, dir, schar;
+{
+ int pos, inc;
+
+ pos = rl_point;
+ inc = (dir < 0) ? -1 : 1;
+ while (count)
+ {
+ if ((dir < 0 && pos <= 0) || (dir > 0 && pos >= rl_end))
+ {
+ ding ();
+ return -1;
+ }
+
+ pos += inc;
+ do
+ {
+ if (rl_line_buffer[pos] == schar)
+ {
+ count--;
+ if (dir < 0)
+ rl_point = (dir == BTO) ? pos + 1 : pos;
+ else
+ rl_point = (dir == FTO) ? pos - 1 : pos;
+ break;
+ }
+ }
+ while ((dir < 0) ? pos-- : ++pos < rl_end);
+ }
+ return (0);
+}
+
+/* Search COUNT times for a character read from the current input stream.
+ FDIR is the direction to search if COUNT is non-negative; otherwise
+ the search goes in BDIR. */
+static int
+_rl_char_search (count, fdir, bdir)
+ int count, fdir, bdir;
+{
+ int c;
+
+ c = rl_read_key ();
+ if (count < 0)
+ return (_rl_char_search_internal (-count, bdir, c));
+ else
+ return (_rl_char_search_internal (count, fdir, c));
+}
+
+int
+rl_char_search (count, key)
+ int count, key;
+{
+ return (_rl_char_search (count, FFIND, BFIND));
+}
+
+int
+rl_backward_char_search (count, key)
+ int count, key;
+{
+ return (_rl_char_search (count, BFIND, FFIND));
+}
+
+/* **************************************************************** */
+/* */
+/* History Utilities */
+/* */
+/* **************************************************************** */
+
+/* We already have a history library, and that is what we use to control
+ the history features of readline. This is our local interface to
+ the history mechanism. */
+
+/* While we are editing the history, this is the saved
+ version of the original line. */
+HIST_ENTRY *saved_line_for_history = (HIST_ENTRY *)NULL;
+
+/* Set the history pointer back to the last entry in the history. */
+static void
+start_using_history ()
+{
+ using_history ();
+ if (saved_line_for_history)
+ _rl_free_history_entry (saved_line_for_history);
+
+ saved_line_for_history = (HIST_ENTRY *)NULL;
+}
+
+/* Free the contents (and containing structure) of a HIST_ENTRY. */
+void
+_rl_free_history_entry (entry)
+ HIST_ENTRY *entry;
+{
+ if (entry == 0)
+ return;
+ if (entry->line)
+ free (entry->line);
+ free (entry);
+}
+
+/* Perhaps put back the current line if it has changed. */
+int
+maybe_replace_line ()
+{
+ HIST_ENTRY *temp;
+
+ temp = current_history ();
+ /* If the current line has changed, save the changes. */
+ if (temp && ((UNDO_LIST *)(temp->data) != rl_undo_list))
+ {
+ temp = replace_history_entry (where_history (), the_line, rl_undo_list);
+ free (temp->line);
+ free (temp);
+ }
+ return 0;
+}
+
+/* Put back the saved_line_for_history if there is one. */
+int
+maybe_unsave_line ()
+{
+ int line_len;
+
+ if (saved_line_for_history)
+ {
+ line_len = strlen (saved_line_for_history->line);
+
+ if (line_len >= rl_line_buffer_len)
+ rl_extend_line_buffer (line_len);
+
+ strcpy (the_line, saved_line_for_history->line);
+ rl_undo_list = (UNDO_LIST *)saved_line_for_history->data;
+ _rl_free_history_entry (saved_line_for_history);
+ saved_line_for_history = (HIST_ENTRY *)NULL;
+ rl_end = rl_point = strlen (the_line);
+ }
+ else
+ ding ();
+ return 0;
+}
+
+/* Save the current line in saved_line_for_history. */
+int
+maybe_save_line ()
+{
+ if (saved_line_for_history == 0)
+ {
+ saved_line_for_history = (HIST_ENTRY *)xmalloc (sizeof (HIST_ENTRY));
+ saved_line_for_history->line = savestring (the_line);
+ saved_line_for_history->data = (char *)rl_undo_list;
+ }
+ return 0;
+}
+
+/* **************************************************************** */
+/* */
+/* History Commands */
+/* */
+/* **************************************************************** */
+
+/* Meta-< goes to the start of the history. */
+int
+rl_beginning_of_history (count, key)
+ int count, key;
+{
+ return (rl_get_previous_history (1 + where_history (), key));
+}
+
+/* Meta-> goes to the end of the history. (The current line). */
+int
+rl_end_of_history (count, key)
+ int count, key;
+{
+ maybe_replace_line ();
+ using_history ();
+ maybe_unsave_line ();
+ return 0;
+}
+
+/* Move down to the next history line. */
+int
+rl_get_next_history (count, key)
+ int count, key;
+{
+ HIST_ENTRY *temp;
+ int line_len;
+
+ if (count < 0)
+ return (rl_get_previous_history (-count, key));
+
+ if (count == 0)
+ return 0;
+
+ maybe_replace_line ();
+
+ temp = (HIST_ENTRY *)NULL;
+ while (count)
+ {
+ temp = next_history ();
+ if (!temp)
+ break;
+ --count;
+ }
+
+ if (temp == 0)
+ maybe_unsave_line ();
+ else
+ {
+ line_len = strlen (temp->line);
+
+ if (line_len >= rl_line_buffer_len)
+ rl_extend_line_buffer (line_len);
+
+ strcpy (the_line, temp->line);
+ rl_undo_list = (UNDO_LIST *)temp->data;
+ rl_end = rl_point = strlen (the_line);
+#if defined (VI_MODE)
+ if (rl_editing_mode == vi_mode)
+ rl_point = 0;
+#endif /* VI_MODE */
+ }
+ return 0;
+}
+
+/* Get the previous item out of our interactive history, making it the current
+ line. If there is no previous history, just ding. */
+int
+rl_get_previous_history (count, key)
+ int count, key;
+{
+ HIST_ENTRY *old_temp, *temp;
+ int line_len;
+
+ if (count < 0)
+ return (rl_get_next_history (-count, key));
+
+ if (count == 0)
+ return 0;
+
+ /* If we don't have a line saved, then save this one. */
+ maybe_save_line ();
+
+ /* If the current line has changed, save the changes. */
+ maybe_replace_line ();
+
+ temp = old_temp = (HIST_ENTRY *)NULL;
+ while (count)
+ {
+ temp = previous_history ();
+ if (temp == 0)
+ break;
+
+ old_temp = temp;
+ --count;
+ }
+
+ /* If there was a large argument, and we moved back to the start of the
+ history, that is not an error. So use the last value found. */
+ if (!temp && old_temp)
+ temp = old_temp;
+
+ if (temp == 0)
+ ding ();
+ else
+ {
+ line_len = strlen (temp->line);
+
+ if (line_len >= rl_line_buffer_len)
+ rl_extend_line_buffer (line_len);
+
+ strcpy (the_line, temp->line);
+ rl_undo_list = (UNDO_LIST *)temp->data;
+ rl_end = rl_point = line_len;
+
+#if defined (VI_MODE)
+ if (rl_editing_mode == vi_mode)
+ rl_point = 0;
+#endif /* VI_MODE */
+ }
+ return 0;
+}
+
+/* **************************************************************** */
+/* */
+/* The Mark and the Region. */
+/* */
+/* **************************************************************** */
+
+/* Set the mark at POSITION. */
+int
+_rl_set_mark_at_pos (position)
+ int position;
+{
+ if (position > rl_end)
+ return -1;
+
+ rl_mark = position;
+ return 0;
+}
+
+/* A bindable command to set the mark. */
+int
+rl_set_mark (count, key)
+ int count, key;
+{
+ return (_rl_set_mark_at_pos (rl_explicit_arg ? count : rl_point));
+}
+
+/* Exchange the position of mark and point. */
+int
+rl_exchange_point_and_mark (count, key)
+ int count, key;
+{
+ if (rl_mark > rl_end)
+ rl_mark = -1;
+
+ if (rl_mark == -1)
+ {
+ ding ();
+ return -1;
+ }
+ else
+ SWAP (rl_point, rl_mark);
+
+ return 0;
+}
+
+/* **************************************************************** */
+/* */
+/* Editing Modes */
+/* */
+/* **************************************************************** */
+/* How to toggle back and forth between editing modes. */
+int
+rl_vi_editing_mode (count, key)
+ int count, key;
+{
+#if defined (VI_MODE)
+ rl_editing_mode = vi_mode;
+ rl_vi_insertion_mode ();
+#endif /* VI_MODE */
+ return 0;
+}
+
+int
+rl_emacs_editing_mode (count, key)
+ int count, key;
+{
+ rl_editing_mode = emacs_mode;
+ _rl_keymap = emacs_standard_keymap;
+ return 0;
+}
diff --git a/contrib/libreadline/readline.h b/contrib/libreadline/readline.h
new file mode 100644
index 0000000..4f7d498
--- /dev/null
+++ b/contrib/libreadline/readline.h
@@ -0,0 +1,391 @@
+/* Readline.h -- the names of functions callable from within readline. */
+
+/* Copyright (C) 1987, 1989, 1992 Free Software Foundation, Inc.
+
+ This file is part of the GNU Readline Library, a library for
+ reading lines of text with interactive input and history editing.
+
+ The GNU Readline Library is free software; you can redistribute it
+ and/or modify it under the terms of the GNU General Public License
+ as published by the Free Software Foundation; either version 1, or
+ (at your option) any later version.
+
+ The GNU Readline Library is distributed in the hope that it will be
+ useful, but WITHOUT ANY WARRANTY; without even the implied warranty
+ of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ The GNU General Public License is often shipped with GNU software, and
+ is generally kept in a file called COPYING or LICENSE. If you do not
+ have a copy of the license, write to the Free Software Foundation,
+ 675 Mass Ave, Cambridge, MA 02139, USA. */
+
+#if !defined (_READLINE_H_)
+#define _READLINE_H_
+
+#if defined (READLINE_LIBRARY)
+# include "keymaps.h"
+# include "tilde.h"
+#else
+# include <readline/keymaps.h>
+# include <readline/tilde.h>
+#endif
+
+/* Readline data structures. */
+
+/* Maintaining the state of undo. We remember individual deletes and inserts
+ on a chain of things to do. */
+
+/* The actions that undo knows how to undo. Notice that UNDO_DELETE means
+ to insert some text, and UNDO_INSERT means to delete some text. I.e.,
+ the code tells undo what to undo, not how to undo it. */
+enum undo_code { UNDO_DELETE, UNDO_INSERT, UNDO_BEGIN, UNDO_END };
+
+/* What an element of THE_UNDO_LIST looks like. */
+typedef struct undo_list {
+ struct undo_list *next;
+ int start, end; /* Where the change took place. */
+ char *text; /* The text to insert, if undoing a delete. */
+ enum undo_code what; /* Delete, Insert, Begin, End. */
+} UNDO_LIST;
+
+/* The current undo list for RL_LINE_BUFFER. */
+extern UNDO_LIST *rl_undo_list;
+
+/* The data structure for mapping textual names to code addresses. */
+typedef struct _funmap {
+ char *name;
+ Function *function;
+} FUNMAP;
+
+extern FUNMAP **funmap;
+
+/* Functions available to bind to key sequences. */
+extern int
+ rl_tilde_expand (), rl_set_mark (), rl_exchange_point_and_mark (),
+ rl_beg_of_line (), rl_backward (), rl_delete (), rl_end_of_line (),
+ rl_forward (), ding (), rl_newline (), rl_kill_line (),
+ rl_copy_region_to_kill (), rl_kill_region (), rl_char_search (),
+ rl_clear_screen (), rl_get_next_history (), rl_get_previous_history (),
+ rl_quoted_insert (), rl_reverse_search_history (), rl_transpose_chars (),
+ rl_unix_line_discard (), rl_unix_word_rubout (),
+ rl_yank (), rl_rubout (), rl_backward_word (), rl_kill_word (),
+ rl_forward_word (), rl_tab_insert (), rl_yank_pop (), rl_yank_nth_arg (),
+ rl_backward_kill_word (), rl_backward_kill_line (), rl_transpose_words (),
+ rl_complete (), rl_possible_completions (), rl_insert_completions (),
+ rl_do_lowercase_version (), rl_kill_full_line (),
+ rl_digit_argument (), rl_universal_argument (), rl_abort (),
+ rl_undo_command (), rl_revert_line (), rl_beginning_of_history (),
+ rl_end_of_history (), rl_forward_search_history (), rl_insert (),
+ rl_upcase_word (), rl_downcase_word (), rl_capitalize_word (),
+ rl_restart_output (), rl_re_read_init_file (),
+ rl_dump_functions (), rl_dump_variables (), rl_dump_macros (),
+ rl_delete_horizontal_space (), rl_history_search_forward (),
+ rl_history_search_backward (), rl_tty_status (), rl_yank_last_arg (),
+ rl_insert_comment (), rl_backward_char_search (),
+ rl_copy_forward_word (), rl_copy_backward_word ();
+
+/* Not available unless readline is compiled -DPAREN_MATCHING. */
+extern int rl_insert_close ();
+
+/* Not available unless READLINE_CALLBACKS is defined. */
+extern void rl_callback_handler_install ();
+extern void rl_callback_read_char ();
+extern void rl_callback_handler_remove ();
+
+/* These are *both* defined even when VI_MODE is not. */
+extern int rl_vi_editing_mode (), rl_emacs_editing_mode ();
+
+/* Non incremental history searching. */
+extern int
+ rl_noninc_forward_search (), rl_noninc_reverse_search (),
+ rl_noninc_forward_search_again (), rl_noninc_reverse_search_again ();
+
+/* Things for vi mode. Not available unless readline is compiled -DVI_MODE. */
+extern int rl_vi_check (), rl_vi_textmod_command ();
+extern int
+ rl_vi_undo (), rl_vi_redo (), rl_vi_tilde_expand (),
+ rl_vi_movement_mode (), rl_vi_insertion_mode (), rl_vi_arg_digit (),
+ rl_vi_prev_word (), rl_vi_next_word (), rl_vi_char_search (),
+ rl_vi_eof_maybe (), rl_vi_append_mode (), rl_vi_put (),
+ rl_vi_append_eol (), rl_vi_insert_beg (), rl_vi_delete (),
+ rl_vi_first_print (), rl_vi_fword (), rl_vi_fWord (), rl_vi_bword (),
+ rl_vi_bWord (), rl_vi_eword (), rl_vi_eWord (), rl_vi_end_word (),
+ rl_vi_change_case (), rl_vi_match (), rl_vi_bracktype (),
+ rl_vi_change_char (), rl_vi_yank_arg (), rl_vi_search (),
+ rl_vi_search_again (), rl_vi_subst (), rl_vi_overstrike (),
+ rl_vi_overstrike_delete (), rl_vi_replace(), rl_vi_column (),
+ rl_vi_delete_to (), rl_vi_change_to (), rl_vi_yank_to (),
+ rl_vi_complete (), rl_vi_fetch_history (), rl_vi_set_mark (),
+ rl_vi_goto_mark (), rl_vi_back_to_indent ();
+
+/* Keyboard macro commands. */
+extern int rl_start_kbd_macro (), rl_end_kbd_macro ();
+extern int rl_call_last_kbd_macro ();
+extern void rl_push_macro_input ();
+
+extern int rl_arrow_keys(), rl_refresh_line ();
+
+/* **************************************************************** */
+/* */
+/* Well Published Functions */
+/* */
+/* **************************************************************** */
+
+/* Readline functions. */
+/* Read a line of input. Prompt with PROMPT. A NULL PROMPT means none. */
+extern char *readline ();
+
+/* These functions are from bind.c. */
+/* rl_add_defun (char *name, Function *function, int key)
+ Add NAME to the list of named functions. Make FUNCTION
+ be the function that gets called.
+ If KEY is not -1, then bind it. */
+extern int rl_add_defun ();
+
+extern Keymap rl_make_bare_keymap ();
+extern Keymap rl_copy_keymap ();
+extern Keymap rl_make_keymap ();
+extern void rl_discard_keymap ();
+extern Keymap rl_get_keymap (), rl_get_keymap_by_name ();
+extern void rl_set_keymap ();
+extern char *rl_get_keymap_name ();
+
+extern int rl_bind_key (), rl_bind_key_in_map ();
+extern int rl_unbind_key (), rl_unbind_key_in_map ();
+extern int rl_set_key ();
+extern int rl_generic_bind ();
+extern int rl_parse_and_bind ();
+/* Backwards compatibility, use rl_generic_bind instead. */
+extern int rl_macro_bind (), rl_variable_bind ();
+
+extern int rl_read_init_file ();
+
+extern Function *rl_named_function (), *rl_function_of_keyseq ();
+extern char **rl_invoking_keyseqs (), **rl_invoking_keyseqs_in_map ();
+extern void rl_function_dumper ();
+extern void rl_variable_dumper ();
+extern void rl_macro_dumper ();
+extern void rl_list_funmap_names ();
+
+/* Undocumented in the texinfo manual; not really useful to programs. */
+extern int rl_translate_keyseq ();
+extern void rl_initialize_funmap ();
+
+/* Functions for undoing. */
+extern int rl_begin_undo_group (), rl_end_undo_group ();
+extern void rl_add_undo (), free_undo_list ();
+extern int rl_do_undo ();
+extern int rl_modifying ();
+
+/* Functions for redisplay. */
+extern void rl_redisplay ();
+extern int rl_forced_update_display ();
+extern int rl_clear_message ();
+extern int rl_reset_line_state ();
+extern int rl_on_new_line ();
+
+#if defined (__STDC__) && defined (USE_VARARGS) && defined (PREFER_STDARG)
+extern int rl_message (const char *, ...);
+#else
+extern int rl_message ();
+#endif
+
+/* Undocumented in texinfo manual. */
+extern int rl_character_len ();
+extern int rl_show_char ();
+extern int crlf ();
+
+/* Modifying text. */
+extern int rl_insert_text (), rl_delete_text ();
+extern int rl_kill_text ();
+extern char *rl_copy_text ();
+
+/* `Public' utility functions. */
+extern int rl_reset_terminal ();
+extern int rl_stuff_char ();
+extern int rl_read_key (), rl_getc ();
+
+extern int rl_initialize ();
+
+/* Undocumented. */
+extern int rl_expand_prompt ();
+extern int rl_set_signals (), rl_clear_signals ();
+extern int maybe_save_line (), maybe_unsave_line (), maybe_replace_line ();
+
+/* Completion functions. */
+/* These functions are from complete.c. */
+extern int rl_complete_internal ();
+
+/* Return an array of strings which are the result of repeatadly calling
+ FUNC with TEXT. */
+extern char **completion_matches ();
+extern char *username_completion_function ();
+extern char *filename_completion_function ();
+
+/* **************************************************************** */
+/* */
+/* Well Published Variables */
+/* */
+/* **************************************************************** */
+
+/* The version of this incarnation of the readline library. */
+extern char *rl_library_version;
+
+/* The name of the calling program. You should initialize this to
+ whatever was in argv[0]. It is used when parsing conditionals. */
+extern char *rl_readline_name;
+
+/* The line buffer that is in use. */
+extern char *rl_line_buffer;
+
+/* The location of point, and end. */
+extern int rl_point, rl_end;
+
+extern int rl_mark;
+
+extern int rl_done;
+
+extern int rl_pending_input;
+
+/* The name of the terminal to use. */
+extern char *rl_terminal_name;
+
+/* The input and output streams. */
+extern FILE *rl_instream, *rl_outstream;
+
+/* If non-zero, then this is the address of a function to call just
+ before readline_internal () prints the first prompt. */
+extern Function *rl_startup_hook;
+
+/* The address of a function to call periodically while Readline is
+ awaiting character input, or NULL, for no event handling. */
+extern Function *rl_event_hook;
+
+extern Function *rl_getc_function;
+extern VFunction *rl_redisplay_function;
+extern VFunction *rl_prep_term_function;
+extern VFunction *rl_deprep_term_function;
+
+/* Dispatch variables. */
+extern Keymap rl_executing_keymap;
+extern Keymap rl_binding_keymap;
+
+/* Completion variables. */
+/* Pointer to the generator function for completion_matches ().
+ NULL means to use filename_entry_function (), the default filename
+ completer. */
+extern Function *rl_completion_entry_function;
+
+/* If rl_ignore_some_completions_function is non-NULL it is the address
+ of a function to call after all of the possible matches have been
+ generated, but before the actual completion is done to the input line.
+ The function is called with one argument; a NULL terminated array
+ of (char *). If your function removes any of the elements, they
+ must be free()'ed. */
+extern Function *rl_ignore_some_completions_function;
+
+/* Pointer to alternative function to create matches.
+ Function is called with TEXT, START, and END.
+ START and END are indices in RL_LINE_BUFFER saying what the boundaries
+ of TEXT are.
+ If this function exists and returns NULL then call the value of
+ rl_completion_entry_function to try to match, otherwise use the
+ array of strings returned. */
+extern CPPFunction *rl_attempted_completion_function;
+
+/* The basic list of characters that signal a break between words for the
+ completer routine. The initial contents of this variable is what
+ breaks words in the shell, i.e. "n\"\\'`@$>". */
+extern char *rl_basic_word_break_characters;
+
+/* The list of characters that signal a break between words for
+ rl_complete_internal. The default list is the contents of
+ rl_basic_word_break_characters. */
+extern char *rl_completer_word_break_characters;
+
+/* List of characters which can be used to quote a substring of the line.
+ Completion occurs on the entire substring, and within the substring
+ rl_completer_word_break_characters are treated as any other character,
+ unless they also appear within this list. */
+extern char *rl_completer_quote_characters;
+
+/* List of quote characters which cause a word break. */
+extern char *rl_basic_quote_characters;
+
+/* List of characters that need to be quoted in filenames by the completer. */
+extern char *rl_filename_quote_characters;
+
+/* List of characters that are word break characters, but should be left
+ in TEXT when it is passed to the completion function. The shell uses
+ this to help determine what kind of completing to do. */
+extern char *rl_special_prefixes;
+
+/* If non-zero, then this is the address of a function to call when
+ completing on a directory name. The function is called with
+ the address of a string (the current directory name) as an arg. */
+extern Function *rl_directory_completion_hook;
+
+/* Backwards compatibility with previous versions of readline. */
+#define rl_symbolic_link_hook rl_directory_completion_hook
+
+/* Non-zero means that the results of the matches are to be treated
+ as filenames. This is ALWAYS zero on entry, and can only be changed
+ within a completion entry finder function. */
+extern int rl_filename_completion_desired;
+
+/* Non-zero means that the results of the matches are to be quoted using
+ double quotes (or an application-specific quoting mechanism) if the
+ filename contains any characters in rl_word_break_chars. This is
+ ALWAYS non-zero on entry, and can only be changed within a completion
+ entry finder function. */
+extern int rl_filename_quoting_desired;
+
+/* Set to a function to quote a filename in an application-specific fashion.
+ Called with the text to quote, the type of match found (single or multiple)
+ and a pointer to the quoting character to be used, which the function can
+ reset if desired. */
+extern CPFunction *rl_filename_quoting_function;
+
+/* Function to call to remove quoting characters from a filename. Called
+ before completion is attempted, so the embedded quotes do not interfere
+ with matching names in the file system. */
+extern CPFunction *rl_filename_dequoting_function;
+
+/* Function to call to decide whether or not a word break character is
+ quoted. If a character is quoted, it does not break words for the
+ completer. */
+extern Function *rl_char_is_quoted_p;
+
+/* Non-zero means to suppress normal filename completion after the
+ user-specified completion function has been called. */
+extern int rl_attempted_completion_over;
+
+/* Set to a character describing the type of completion being attempted by
+ rl_complete_internal; available for use by application completion
+ functions. */
+extern int rl_completion_type;
+
+/* Character appended to completed words when at the end of the line. The
+ default is a space. Nothing is added if this is '\0'. */
+extern int rl_completion_append_character;
+
+/* If this is non-zero, completion is (temporarily) inhibited, and the
+ completion character will be inserted as any other. */
+extern int rl_inhibit_completion;
+
+/* Definitions available for use by readline clients. */
+#define RL_PROMPT_START_IGNORE '\001'
+#define RL_PROMPT_END_IGNORE '\002'
+
+/* Possible values for do_replace argument to rl_filename_quoting_function,
+ called by rl_complete_internal. */
+#define NO_MATCH 0
+#define SINGLE_MATCH 1
+#define MULT_MATCH 2
+
+#if !defined (savestring)
+extern char *savestring (); /* XXX backwards compatibility */
+#endif
+
+#endif /* _READLINE_H_ */
diff --git a/contrib/libreadline/rlconf.h b/contrib/libreadline/rlconf.h
new file mode 100644
index 0000000..8f07db1
--- /dev/null
+++ b/contrib/libreadline/rlconf.h
@@ -0,0 +1,63 @@
+/* rlconf.h -- readline configuration definitions */
+
+/* Copyright (C) 1994 Free Software Foundation, Inc.
+
+ This file contains the Readline Library (the Library), a set of
+ routines for providing Emacs style line input to programs that ask
+ for it.
+
+ The Library is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 1, or (at your option)
+ any later version.
+
+ The Library is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ General Public License for more details.
+
+ The GNU General Public License is often shipped with GNU software, and
+ is generally kept in a file called COPYING or LICENSE. If you do not
+ have a copy of the license, write to the Free Software Foundation,
+ 675 Mass Ave, Cambridge, MA 02139, USA. */
+
+#if !defined (_RLCONF_H_)
+#define _RLCONF_H_
+
+/* Define this if you want the vi-mode editing available. */
+#define VI_MODE
+
+/* Define this to get an indication of file type when listing completions. */
+#define VISIBLE_STATS
+
+/* If defined, readline shows opening parens and braces when closing
+ paren or brace entered. */
+/* #define PAREN_MATCHING */
+
+/* This definition is needed by readline.c, rltty.c, and signals.c. */
+/* If on, then readline handles signals in a way that doesn't screw. */
+#define HANDLE_SIGNALS
+
+/* Ugly but working hack for binding prefix meta. */
+#define PREFIX_META_HACK
+
+/* The final, last-ditch effort file name for an init file. */
+#define DEFAULT_INPUTRC "~/.inputrc"
+
+/* If defined, expand tabs to spaces. */
+#define DISPLAY_TABS
+
+/* If defined, use the terminal escape sequence to move the cursor forward
+ over a character when updating the line rather than rewriting it. */
+/* #define HACK_TERMCAP_MOTION */
+
+/* The string inserted by the `insert comment' command. */
+#define RL_COMMENT_BEGIN_DEFAULT "#"
+
+/* Define this if you want code that allows readline to be used in an
+ X `callback' style. */
+#if !defined (SHELL)
+# define READLINE_CALLBACKS
+#endif
+
+#endif /* _RLCONF_H_ */
diff --git a/contrib/libreadline/rldefs.h b/contrib/libreadline/rldefs.h
new file mode 100644
index 0000000..5a9e62a
--- /dev/null
+++ b/contrib/libreadline/rldefs.h
@@ -0,0 +1,146 @@
+/* rldefs.h -- an attempt to isolate some of the system-specific defines
+ for readline. This should be included after any files that define
+ system-specific constants like _POSIX_VERSION or USG. */
+
+/* Copyright (C) 1987,1989 Free Software Foundation, Inc.
+
+ This file contains the Readline Library (the Library), a set of
+ routines for providing Emacs style line input to programs that ask
+ for it.
+
+ The Library is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 1, or (at your option)
+ any later version.
+
+ The Library is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ General Public License for more details.
+
+ The GNU General Public License is often shipped with GNU software, and
+ is generally kept in a file called COPYING or LICENSE. If you do not
+ have a copy of the license, write to the Free Software Foundation,
+ 675 Mass Ave, Cambridge, MA 02139, USA. */
+
+#if !defined (_RLDEFS_H_)
+#define _RLDEFS_H_
+
+#if defined (HAVE_CONFIG_H)
+# include "config.h"
+#endif
+
+#if defined (_POSIX_VERSION) && !defined (TERMIOS_MISSING)
+# define TERMIOS_TTY_DRIVER
+#else
+# if defined (HAVE_TERMIO_H)
+# define TERMIO_TTY_DRIVER
+# else
+# define NEW_TTY_DRIVER
+# endif
+#endif
+
+#if defined (HAVE_SYS_STREAM_H)
+# include <sys/stream.h>
+#endif /* HAVE_SYS_STREAM_H */
+#if defined (HAVE_SYS_PTEM_H)
+# include <sys/ptem.h>
+# define _IO_PTEM_H /* work around SVR4.2 1.1.4 bug */
+#endif /* HAVE_SYS_PTEM_H */
+#if defined (HAVE_SYS_PTE_H)
+# include <sys/pte.h>
+#endif /* HAVE_SYS_PTE_H */
+
+/* Posix macro to check file in statbuf for directory-ness.
+ This requires that <sys/stat.h> be included before this test. */
+#if defined (S_IFDIR) && !defined (S_ISDIR)
+# define S_ISDIR(m) (((m)&S_IFMT) == S_IFDIR)
+#endif
+
+/* Decide which flavor of the header file describing the C library
+ string functions to include and include it. */
+
+#if defined (HAVE_STRING_H)
+# include <string.h>
+#else /* !HAVE_STRING_H */
+# include <strings.h>
+#endif /* !HAVE_STRING_H */
+
+#if !defined (strchr) && !defined (__STDC__)
+extern char *strchr (), *strrchr ();
+#endif /* !strchr && !__STDC__ */
+
+#if defined (PREFER_STDARG)
+# include <stdarg.h>
+#else
+# if defined (PREFER_VARARGS)
+# include <varargs.h>
+# endif
+#endif
+
+#if defined (HAVE_STRCASECMP)
+#define _rl_stricmp strcasecmp
+#define _rl_strnicmp strncasecmp
+#else
+extern int _rl_stricmp (), _rl_strnicmp ();
+#endif
+
+#if !defined (emacs_mode)
+# define no_mode -1
+# define vi_mode 0
+# define emacs_mode 1
+#endif
+
+/* If you cast map[key].function to type (Keymap) on a Cray,
+ the compiler takes the value of map[key].function and
+ divides it by 4 to convert between pointer types (pointers
+ to functions and pointers to structs are different sizes).
+ This is not what is wanted. */
+#if defined (CRAY)
+# define FUNCTION_TO_KEYMAP(map, key) (Keymap)((int)map[key].function)
+# define KEYMAP_TO_FUNCTION(data) (Function *)((int)(data))
+#else
+# define FUNCTION_TO_KEYMAP(map, key) (Keymap)(map[key].function)
+# define KEYMAP_TO_FUNCTION(data) (Function *)(data)
+#endif
+
+#ifndef savestring
+extern char *xmalloc ();
+#define savestring(x) strcpy (xmalloc (1 + strlen (x)), (x))
+#endif
+
+/* Possible values for _rl_bell_preference. */
+#define NO_BELL 0
+#define AUDIBLE_BELL 1
+#define VISIBLE_BELL 2
+
+/* Definitions used when searching the line for characters. */
+/* NOTE: it is necessary that opposite directions are inverses */
+#define FTO 1 /* forward to */
+#define BTO -1 /* backward to */
+#define FFIND 2 /* forward find */
+#define BFIND -2 /* backward find */
+
+/* Possible values for the found_quote flags word used by the completion
+ functions. It says what kind of (shell-like) quoting we found anywhere
+ in the line. */
+#define RL_QF_SINGLE_QUOTE 0x1
+#define RL_QF_DOUBLE_QUOTE 0x2
+#define RL_QF_BACKSLASH 0x4
+
+/* Default readline line buffer length. */
+#define DEFAULT_BUFFER_SIZE 256
+
+#if !defined (STREQ)
+#define STREQ(a, b) (((a)[0] == (b)[0]) && (strcmp ((a), (b)) == 0))
+#define STREQN(a, b, n) (((a)[0] == (b)[0]) && (strncmp ((a), (b), (n)) == 0))
+#endif
+
+#if !defined (FREE)
+# define FREE(x) if (x) free (x)
+#endif
+
+/* CONFIGURATION SECTION */
+#include "rlconf.h"
+
+#endif /* !_RLDEFS_H_ */
diff --git a/contrib/libreadline/rltty.c b/contrib/libreadline/rltty.c
new file mode 100644
index 0000000..d35eb6a
--- /dev/null
+++ b/contrib/libreadline/rltty.c
@@ -0,0 +1,726 @@
+/* rltty.c -- functions to prepare and restore the terminal for readline's
+ use. */
+
+/* Copyright (C) 1992 Free Software Foundation, Inc.
+
+ This file is part of the GNU Readline Library, a library for
+ reading lines of text with interactive input and history editing.
+
+ The GNU Readline Library is free software; you can redistribute it
+ and/or modify it under the terms of the GNU General Public License
+ as published by the Free Software Foundation; either version 1, or
+ (at your option) any later version.
+
+ The GNU Readline Library is distributed in the hope that it will be
+ useful, but WITHOUT ANY WARRANTY; without even the implied warranty
+ of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ The GNU General Public License is often shipped with GNU software, and
+ is generally kept in a file called COPYING or LICENSE. If you do not
+ have a copy of the license, write to the Free Software Foundation,
+ 675 Mass Ave, Cambridge, MA 02139, USA. */
+#define READLINE_LIBRARY
+
+#if defined (HAVE_CONFIG_H)
+# include <config.h>
+#endif
+
+#include <sys/types.h>
+#include <signal.h>
+#include <errno.h>
+#include <stdio.h>
+
+#if defined (HAVE_UNISTD_H)
+# include <unistd.h>
+#endif /* HAVE_UNISTD_H */
+
+#include "rldefs.h"
+
+#if !defined (SHELL) && defined (GWINSZ_IN_SYS_IOCTL)
+# include <sys/ioctl.h>
+#endif /* !SHELL && GWINSZ_IN_SYS_IOCTL */
+
+#include "rltty.h"
+#include "readline.h"
+
+#if !defined (errno)
+extern int errno;
+#endif /* !errno */
+
+extern int readline_echoing_p;
+extern int _rl_eof_char;
+
+extern int _rl_enable_keypad, _rl_enable_meta;
+
+#if defined (__GO32__)
+# include <pc.h>
+# undef HANDLE_SIGNALS
+#endif /* __GO32__ */
+
+/* Indirect functions to allow apps control over terminal management. */
+extern void rl_prep_terminal (), rl_deprep_terminal ();
+
+VFunction *rl_prep_term_function = rl_prep_terminal;
+VFunction *rl_deprep_term_function = rl_deprep_terminal;
+
+/* **************************************************************** */
+/* */
+/* Signal Management */
+/* */
+/* **************************************************************** */
+
+#if defined (HAVE_POSIX_SIGNALS)
+static sigset_t sigint_set, sigint_oset;
+#else /* !HAVE_POSIX_SIGNALS */
+# if defined (HAVE_BSD_SIGNALS)
+static int sigint_oldmask;
+# endif /* HAVE_BSD_SIGNALS */
+#endif /* !HAVE_POSIX_SIGNALS */
+
+static int sigint_blocked;
+
+/* Cause SIGINT to not be delivered until the corresponding call to
+ release_sigint(). */
+static void
+block_sigint ()
+{
+ if (sigint_blocked)
+ return;
+
+#if defined (HAVE_POSIX_SIGNALS)
+ sigemptyset (&sigint_set);
+ sigemptyset (&sigint_oset);
+ sigaddset (&sigint_set, SIGINT);
+ sigprocmask (SIG_BLOCK, &sigint_set, &sigint_oset);
+#else /* !HAVE_POSIX_SIGNALS */
+# if defined (HAVE_BSD_SIGNALS)
+ sigint_oldmask = sigblock (sigmask (SIGINT));
+# else /* !HAVE_BSD_SIGNALS */
+# if defined (HAVE_USG_SIGHOLD)
+ sighold (SIGINT);
+# endif /* HAVE_USG_SIGHOLD */
+# endif /* !HAVE_BSD_SIGNALS */
+#endif /* !HAVE_POSIX_SIGNALS */
+ sigint_blocked = 1;
+}
+
+/* Allow SIGINT to be delivered. */
+static void
+release_sigint ()
+{
+ if (!sigint_blocked)
+ return;
+
+#if defined (HAVE_POSIX_SIGNALS)
+ sigprocmask (SIG_SETMASK, &sigint_oset, (sigset_t *)NULL);
+#else
+# if defined (HAVE_BSD_SIGNALS)
+ sigsetmask (sigint_oldmask);
+# else /* !HAVE_BSD_SIGNALS */
+# if defined (HAVE_USG_SIGHOLD)
+ sigrelse (SIGINT);
+# endif /* HAVE_USG_SIGHOLD */
+# endif /* !HAVE_BSD_SIGNALS */
+#endif /* !HAVE_POSIX_SIGNALS */
+
+ sigint_blocked = 0;
+}
+
+/* **************************************************************** */
+/* */
+/* Saving and Restoring the TTY */
+/* */
+/* **************************************************************** */
+
+/* Non-zero means that the terminal is in a prepped state. */
+static int terminal_prepped;
+
+/* If non-zero, means that this process has called tcflow(fd, TCOOFF)
+ and output is suspended. */
+#if defined (__ksr1__)
+static int ksrflow;
+#endif
+
+#if !defined (SHELL) && defined (TIOCGWINSZ)
+/* Dummy call to force a backgrounded readline to stop before it tries
+ to get the tty settings. */
+static void
+set_winsize (tty)
+ int tty;
+{
+ struct winsize w;
+
+ if (ioctl (tty, TIOCGWINSZ, &w) == 0)
+ (void) ioctl (tty, TIOCSWINSZ, &w);
+}
+#else /* SHELL || !TIOCGWINSZ */
+# define set_winsize(tty)
+#endif /* SHELL || !TIOCGWINSZ */
+
+#if defined (NEW_TTY_DRIVER)
+
+/* Values for the `flags' field of a struct bsdtty. This tells which
+ elements of the struct bsdtty have been fetched from the system and
+ are valid. */
+#define SGTTY_SET 0x01
+#define LFLAG_SET 0x02
+#define TCHARS_SET 0x04
+#define LTCHARS_SET 0x08
+
+struct bsdtty {
+ struct sgttyb sgttyb; /* Basic BSD tty driver information. */
+ int lflag; /* Local mode flags, like LPASS8. */
+#if defined (TIOCGETC)
+ struct tchars tchars; /* Terminal special characters, including ^S and ^Q. */
+#endif
+#if defined (TIOCGLTC)
+ struct ltchars ltchars; /* 4.2 BSD editing characters */
+#endif
+ int flags; /* Bitmap saying which parts of the struct are valid. */
+};
+
+#define TIOTYPE struct bsdtty
+
+static TIOTYPE otio;
+
+static int
+get_tty_settings (tty, tiop)
+ int tty;
+ TIOTYPE *tiop;
+{
+ set_winsize (tty);
+
+ tiop->flags = tiop->lflag = 0;
+
+ ioctl (tty, TIOCGETP, &(tiop->sgttyb));
+ tiop->flags |= SGTTY_SET;
+
+#if defined (TIOCLGET)
+ ioctl (tty, TIOCLGET, &(tiop->lflag));
+ tiop->flags |= LFLAG_SET;
+#endif
+
+#if defined (TIOCGETC)
+ ioctl (tty, TIOCGETC, &(tiop->tchars));
+ tiop->flags |= TCHARS_SET;
+#endif
+
+#if defined (TIOCGLTC)
+ ioctl (tty, TIOCGLTC, &(tiop->ltchars));
+ tiop->flags |= LTCHARS_SET;
+#endif
+
+ return 0;
+}
+
+static int
+set_tty_settings (tty, tiop)
+ int tty;
+ TIOTYPE *tiop;
+{
+ if (tiop->flags & SGTTY_SET)
+ {
+ ioctl (tty, TIOCSETN, &(tiop->sgttyb));
+ tiop->flags &= ~SGTTY_SET;
+ }
+ readline_echoing_p = 1;
+
+#if defined (TIOCLSET)
+ if (tiop->flags & LFLAG_SET)
+ {
+ ioctl (tty, TIOCLSET, &(tiop->lflag));
+ tiop->flags &= ~LFLAG_SET;
+ }
+#endif
+
+#if defined (TIOCSETC)
+ if (tiop->flags & TCHARS_SET)
+ {
+ ioctl (tty, TIOCSETC, &(tiop->tchars));
+ tiop->flags &= ~TCHARS_SET;
+ }
+#endif
+
+#if defined (TIOCSLTC)
+ if (tiop->flags & LTCHARS_SET)
+ {
+ ioctl (tty, TIOCSLTC, &(tiop->ltchars));
+ tiop->flags &= ~LTCHARS_SET;
+ }
+#endif
+
+ return 0;
+}
+
+static void
+prepare_terminal_settings (meta_flag, otio, tiop)
+ int meta_flag;
+ TIOTYPE otio, *tiop;
+{
+#if !defined (__GO32__)
+ readline_echoing_p = (otio.sgttyb.sg_flags & ECHO);
+
+ /* Copy the original settings to the structure we're going to use for
+ our settings. */
+ tiop->sgttyb = otio.sgttyb;
+ tiop->lflag = otio.lflag;
+#if defined (TIOCGETC)
+ tiop->tchars = otio.tchars;
+#endif
+#if defined (TIOCGLTC)
+ tiop->ltchars = otio.ltchars;
+#endif
+ tiop->flags = otio.flags;
+
+ /* First, the basic settings to put us into character-at-a-time, no-echo
+ input mode. */
+ tiop->sgttyb.sg_flags &= ~(ECHO | CRMOD);
+ tiop->sgttyb.sg_flags |= CBREAK;
+
+ /* If this terminal doesn't care how the 8th bit is used, then we can
+ use it for the meta-key. If only one of even or odd parity is
+ specified, then the terminal is using parity, and we cannot. */
+#if !defined (ANYP)
+# define ANYP (EVENP | ODDP)
+#endif
+ if (((otio.sgttyb.sg_flags & ANYP) == ANYP) ||
+ ((otio.sgttyb.sg_flags & ANYP) == 0))
+ {
+ tiop->sgttyb.sg_flags |= ANYP;
+
+ /* Hack on local mode flags if we can. */
+#if defined (TIOCLGET)
+# if defined (LPASS8)
+ tiop->lflag |= LPASS8;
+# endif /* LPASS8 */
+#endif /* TIOCLGET */
+ }
+
+#if defined (TIOCGETC)
+# if defined (USE_XON_XOFF)
+ /* Get rid of terminal output start and stop characters. */
+ tiop->tchars.t_stopc = -1; /* C-s */
+ tiop->tchars.t_startc = -1; /* C-q */
+
+ /* If there is an XON character, bind it to restart the output. */
+ if (otio.tchars.t_startc != -1)
+ rl_bind_key (otio.tchars.t_startc, rl_restart_output);
+# endif /* USE_XON_XOFF */
+
+ /* If there is an EOF char, bind _rl_eof_char to it. */
+ if (otio.tchars.t_eofc != -1)
+ _rl_eof_char = otio.tchars.t_eofc;
+
+# if defined (NO_KILL_INTR)
+ /* Get rid of terminal-generated SIGQUIT and SIGINT. */
+ tiop->tchars.t_quitc = -1; /* C-\ */
+ tiop->tchars.t_intrc = -1; /* C-c */
+# endif /* NO_KILL_INTR */
+#endif /* TIOCGETC */
+
+#if defined (TIOCGLTC)
+ /* Make the interrupt keys go away. Just enough to make people happy. */
+ tiop->ltchars.t_dsuspc = -1; /* C-y */
+ tiop->ltchars.t_lnextc = -1; /* C-v */
+#endif /* TIOCGLTC */
+#endif /* !__GO32__ */
+}
+
+#else /* !defined (NEW_TTY_DRIVER) */
+
+#if !defined (VMIN)
+# define VMIN VEOF
+#endif
+
+#if !defined (VTIME)
+# define VTIME VEOL
+#endif
+
+#if defined (TERMIOS_TTY_DRIVER)
+# define TIOTYPE struct termios
+# define DRAIN_OUTPUT(fd) tcdrain (fd)
+# define GETATTR(tty, tiop) (tcgetattr (tty, tiop))
+# ifdef M_UNIX
+# define SETATTR(tty, tiop) (tcsetattr (tty, TCSANOW, tiop))
+# else
+# define SETATTR(tty, tiop) (tcsetattr (tty, TCSADRAIN, tiop))
+# endif /* !M_UNIX */
+#else
+# define TIOTYPE struct termio
+# define DRAIN_OUTPUT(fd)
+# define GETATTR(tty, tiop) (ioctl (tty, TCGETA, tiop))
+# define SETATTR(tty, tiop) (ioctl (tty, TCSETA, tiop))
+#endif /* !TERMIOS_TTY_DRIVER */
+
+static TIOTYPE otio;
+
+#if defined (FLUSHO)
+# define OUTPUT_BEING_FLUSHED(tp) (tp->c_lflag & FLUSHO)
+#else
+# define OUTPUT_BEING_FLUSHED(tp) 0
+#endif
+
+static void
+rltty_warning (msg)
+ char *msg;
+{
+ fprintf (stderr, "readline: warning: %s\n", msg);
+}
+
+#if defined (_AIX)
+void
+setopost(tp)
+TIOTYPE *tp;
+{
+ if ((tp->c_oflag & OPOST) == 0)
+ {
+ rltty_warning ("turning on OPOST for terminal\r");
+ tp->c_oflag |= OPOST|ONLCR;
+ }
+}
+#endif
+
+static int
+get_tty_settings (tty, tiop)
+ int tty;
+ TIOTYPE *tiop;
+{
+ int ioctl_ret;
+ set_winsize (tty);
+
+ while (1)
+ {
+ ioctl_ret = GETATTR (tty, tiop);
+ if (ioctl_ret < 0)
+ {
+ if (errno != EINTR)
+ return -1;
+ else
+ continue;
+ }
+ if (OUTPUT_BEING_FLUSHED (tiop))
+ {
+#if defined (FLUSHO) && defined (_AIX41)
+ rltty_warning ("turning off output flushing");
+ tiop->c_lflag &= ~FLUSHO;
+ break;
+#else
+ continue;
+#endif
+ }
+ break;
+ }
+
+#if defined (_AIX)
+ setopost(tiop);
+#endif
+
+ return 0;
+}
+
+static int
+set_tty_settings (tty, tiop)
+ int tty;
+ TIOTYPE *tiop;
+{
+ while (SETATTR (tty, tiop) < 0)
+ {
+ if (errno != EINTR)
+ return -1;
+ errno = 0;
+ }
+
+#if 0
+
+#if defined (TERMIOS_TTY_DRIVER)
+# if defined (__ksr1__)
+ if (ksrflow)
+ {
+ ksrflow = 0;
+ tcflow (tty, TCOON);
+ }
+# else /* !ksr1 */
+ tcflow (tty, TCOON); /* Simulate a ^Q. */
+# endif /* !ksr1 */
+#else
+ ioctl (tty, TCXONC, 1); /* Simulate a ^Q. */
+#endif /* !TERMIOS_TTY_DRIVER */
+
+#endif
+
+ return 0;
+}
+
+static void
+prepare_terminal_settings (meta_flag, otio, tiop)
+ int meta_flag;
+ TIOTYPE otio, *tiop;
+{
+ readline_echoing_p = (otio.c_lflag & ECHO);
+
+ tiop->c_lflag &= ~(ICANON | ECHO);
+
+ if ((unsigned char) otio.c_cc[VEOF] != (unsigned char) _POSIX_VDISABLE)
+ _rl_eof_char = otio.c_cc[VEOF];
+
+#if defined (USE_XON_XOFF)
+#if defined (IXANY)
+ tiop->c_iflag &= ~(IXON | IXOFF | IXANY);
+#else
+ /* `strict' Posix systems do not define IXANY. */
+ tiop->c_iflag &= ~(IXON | IXOFF);
+#endif /* IXANY */
+#endif /* USE_XON_XOFF */
+
+ /* Only turn this off if we are using all 8 bits. */
+ if (((tiop->c_cflag & CSIZE) == CS8) || meta_flag)
+ tiop->c_iflag &= ~(ISTRIP | INPCK);
+
+ /* Make sure we differentiate between CR and NL on input. */
+ tiop->c_iflag &= ~(ICRNL | INLCR);
+
+#if !defined (HANDLE_SIGNALS)
+ tiop->c_lflag &= ~ISIG;
+#else
+ tiop->c_lflag |= ISIG;
+#endif
+
+ tiop->c_cc[VMIN] = 1;
+ tiop->c_cc[VTIME] = 0;
+
+#if defined (FLUSHO)
+ if (OUTPUT_BEING_FLUSHED (tiop))
+ {
+ tiop->c_lflag &= ~FLUSHO;
+ otio.c_lflag &= ~FLUSHO;
+ }
+#endif
+
+ /* Turn off characters that we need on Posix systems with job control,
+ just to be sure. This includes ^Y and ^V. This should not really
+ be necessary. */
+#if defined (TERMIOS_TTY_DRIVER) && defined (_POSIX_VDISABLE)
+
+#if defined (VLNEXT)
+ tiop->c_cc[VLNEXT] = _POSIX_VDISABLE;
+#endif
+
+#if defined (VDSUSP)
+ tiop->c_cc[VDSUSP] = _POSIX_VDISABLE;
+#endif
+
+#endif /* TERMIOS_TTY_DRIVER && _POSIX_VDISABLE */
+}
+#endif /* NEW_TTY_DRIVER */
+
+/* Put the terminal in CBREAK mode so that we can detect key presses. */
+void
+rl_prep_terminal (meta_flag)
+ int meta_flag;
+{
+#if !defined (__GO32__)
+ int tty;
+ TIOTYPE tio;
+
+ if (terminal_prepped)
+ return;
+
+ /* Try to keep this function from being INTerrupted. */
+ block_sigint ();
+
+ tty = fileno (rl_instream);
+
+ if (get_tty_settings (tty, &tio) < 0)
+ {
+ release_sigint ();
+ return;
+ }
+
+ otio = tio;
+
+ prepare_terminal_settings (meta_flag, otio, &tio);
+
+ if (set_tty_settings (tty, &tio) < 0)
+ {
+ release_sigint ();
+ return;
+ }
+
+ if (_rl_enable_keypad)
+ _rl_control_keypad (1);
+
+ fflush (rl_outstream);
+ terminal_prepped = 1;
+
+ release_sigint ();
+#endif /* !__GO32__ */
+}
+
+/* Restore the terminal's normal settings and modes. */
+void
+rl_deprep_terminal ()
+{
+#if !defined (__GO32__)
+ int tty;
+
+ if (!terminal_prepped)
+ return;
+
+ /* Try to keep this function from being interrupted. */
+ block_sigint ();
+
+ tty = fileno (rl_instream);
+
+ if (_rl_enable_keypad)
+ _rl_control_keypad (0);
+
+ fflush (rl_outstream);
+
+ if (set_tty_settings (tty, &otio) < 0)
+ {
+ release_sigint ();
+ return;
+ }
+
+ terminal_prepped = 0;
+
+ release_sigint ();
+#endif /* !__GO32__ */
+}
+
+/* **************************************************************** */
+/* */
+/* Bogus Flow Control */
+/* */
+/* **************************************************************** */
+
+int
+rl_restart_output (count, key)
+ int count, key;
+{
+ int fildes = fileno (rl_outstream);
+#if defined (TIOCSTART)
+#if defined (apollo)
+ ioctl (&fildes, TIOCSTART, 0);
+#else
+ ioctl (fildes, TIOCSTART, 0);
+#endif /* apollo */
+
+#else /* !TIOCSTART */
+# if defined (TERMIOS_TTY_DRIVER)
+# if defined (__ksr1__)
+ if (ksrflow)
+ {
+ ksrflow = 0;
+ tcflow (fildes, TCOON);
+ }
+# else /* !ksr1 */
+ tcflow (fildes, TCOON); /* Simulate a ^Q. */
+# endif /* !ksr1 */
+# else /* !TERMIOS_TTY_DRIVER */
+# if defined (TCXONC)
+ ioctl (fildes, TCXONC, TCOON);
+# endif /* TCXONC */
+# endif /* !TERMIOS_TTY_DRIVER */
+#endif /* !TIOCSTART */
+
+ return 0;
+}
+
+int
+rl_stop_output (count, key)
+ int count, key;
+{
+ int fildes = fileno (rl_instream);
+
+#if defined (TIOCSTOP)
+# if defined (apollo)
+ ioctl (&fildes, TIOCSTOP, 0);
+# else
+ ioctl (fildes, TIOCSTOP, 0);
+# endif /* apollo */
+#else /* !TIOCSTOP */
+# if defined (TERMIOS_TTY_DRIVER)
+# if defined (__ksr1__)
+ ksrflow = 1;
+# endif /* ksr1 */
+ tcflow (fildes, TCOOFF);
+# else
+# if defined (TCXONC)
+ ioctl (fildes, TCXONC, TCOON);
+# endif /* TCXONC */
+# endif /* !TERMIOS_TTY_DRIVER */
+#endif /* !TIOCSTOP */
+
+ return 0;
+}
+
+/* **************************************************************** */
+/* */
+/* Default Key Bindings */
+/* */
+/* **************************************************************** */
+void
+rltty_set_default_bindings (kmap)
+ Keymap kmap;
+{
+ TIOTYPE ttybuff;
+ int tty = fileno (rl_instream);
+
+#if defined (NEW_TTY_DRIVER)
+
+#define SET_SPECIAL(sc, func) \
+ do \
+ { \
+ int ic; \
+ ic = sc; \
+ if (ic != -1 && kmap[ic].type == ISFUNC) \
+ kmap[ic].function = func; \
+ } \
+ while (0)
+
+ if (get_tty_settings (tty, &ttybuff) == 0)
+ {
+ if (ttybuff.flags & SGTTY_SET)
+ {
+ SET_SPECIAL (ttybuff.sgttyb.sg_erase, rl_rubout);
+ SET_SPECIAL (ttybuff.sgttyb.sg_kill, rl_unix_line_discard);
+ }
+
+# if defined (TIOCGLTC)
+ if (ttybuff.flags & LTCHARS_SET)
+ {
+ SET_SPECIAL (ttybuff.ltchars.t_werasc, rl_unix_word_rubout);
+ SET_SPECIAL (ttybuff.ltchars.t_lnextc, rl_quoted_insert);
+ }
+# endif /* TIOCGLTC */
+ }
+
+#else /* !NEW_TTY_DRIVER */
+
+#define SET_SPECIAL(sc, func) \
+ do \
+ { \
+ unsigned char uc; \
+ uc = ttybuff.c_cc[sc]; \
+ if (uc != (unsigned char)_POSIX_VDISABLE && kmap[uc].type == ISFUNC) \
+ kmap[uc].function = func; \
+ } \
+ while (0)
+
+ if (get_tty_settings (tty, &ttybuff) == 0)
+ {
+ SET_SPECIAL (VERASE, rl_rubout);
+ SET_SPECIAL (VKILL, rl_unix_line_discard);
+
+# if defined (VLNEXT) && defined (TERMIOS_TTY_DRIVER)
+ SET_SPECIAL (VLNEXT, rl_quoted_insert);
+# endif /* VLNEXT && TERMIOS_TTY_DRIVER */
+
+# if defined (VWERASE) && defined (TERMIOS_TTY_DRIVER)
+ SET_SPECIAL (VWERASE, rl_unix_word_rubout);
+# endif /* VWERASE && TERMIOS_TTY_DRIVER */
+ }
+#endif /* !NEW_TTY_DRIVER */
+}
diff --git a/contrib/libreadline/rltty.h b/contrib/libreadline/rltty.h
new file mode 100644
index 0000000..3ee6b3f
--- /dev/null
+++ b/contrib/libreadline/rltty.h
@@ -0,0 +1,61 @@
+/* rltty.h - tty driver-related definitions used by some library files. */
+
+/* Copyright (C) 1995 Free Software Foundation, Inc.
+
+ This file contains the Readline Library (the Library), a set of
+ routines for providing Emacs style line input to programs that ask
+ for it.
+
+ The Library is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 1, or (at your option)
+ any later version.
+
+ The Library is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ General Public License for more details.
+
+ The GNU General Public License is often shipped with GNU software, and
+ is generally kept in a file called COPYING or LICENSE. If you do not
+ have a copy of the license, write to the Free Software Foundation,
+ 675 Mass Ave, Cambridge, MA 02139, USA. */
+
+#if !defined (_RLTTY_H_)
+#define _RLTTY_H
+
+/* Posix systems use termios and the Posix signal functions. */
+#if defined (TERMIOS_TTY_DRIVER)
+# include <termios.h>
+#endif /* TERMIOS_TTY_DRIVER */
+
+/* System V machines use termio. */
+#if defined (TERMIO_TTY_DRIVER)
+# include <termio.h>
+# if !defined (TCOON)
+# define TCOON 1
+# endif
+#endif /* TERMIO_TTY_DRIVER */
+
+/* Other (BSD) machines use sgtty. */
+#if defined (NEW_TTY_DRIVER)
+# include <sgtty.h>
+#endif
+
+/* Define _POSIX_VDISABLE if we are not using the `new' tty driver and
+ it is not already defined. It is used both to determine if a
+ special character is disabled and to disable certain special
+ characters. Posix systems should set to 0, USG systems to -1. */
+#if !defined (NEW_TTY_DRIVER) && !defined (_POSIX_VDISABLE)
+# if defined (_SVR4_VDISABLE)
+# define _POSIX_VDISABLE _SVR4_VDISABLE
+# else
+# if defined (_POSIX_VERSION)
+# define _POSIX_VDISABLE 0
+# else /* !_POSIX_VERSION */
+# define _POSIX_VDISABLE -1
+# endif /* !_POSIX_VERSION */
+# endif /* !_SVR4_DISABLE */
+#endif /* !NEW_TTY_DRIVER && !_POSIX_VDISABLE */
+
+#endif /* _RLTTY_H_ */
diff --git a/contrib/libreadline/search.c b/contrib/libreadline/search.c
new file mode 100644
index 0000000..05641a1
--- /dev/null
+++ b/contrib/libreadline/search.c
@@ -0,0 +1,369 @@
+/* search.c - code for non-incremental searching in emacs and vi modes. */
+
+/* Copyright (C) 1992 Free Software Foundation, Inc.
+
+ This file is part of the Readline Library (the Library), a set of
+ routines for providing Emacs style line input to programs that ask
+ for it.
+
+ The Library is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 1, or (at your option)
+ any later version.
+
+ The Library is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ General Public License for more details.
+
+ The GNU General Public License is often shipped with GNU software, and
+ is generally kept in a file called COPYING or LICENSE. If you do not
+ have a copy of the license, write to the Free Software Foundation,
+ 675 Mass Ave, Cambridge, MA 02139, USA. */
+#define READLINE_LIBRARY
+
+#if defined (HAVE_CONFIG_H)
+# include <config.h>
+#endif
+
+#include <sys/types.h>
+#include <stdio.h>
+
+#if defined (HAVE_UNISTD_H)
+# include <unistd.h>
+#endif
+
+#include "rldefs.h"
+#include "readline.h"
+#include "history.h"
+
+#define abs(x) (((x) > 0) ? (x) : -(x))
+
+extern char *xmalloc (), *xrealloc ();
+
+/* Variables imported from readline.c */
+extern int rl_point, rl_end, rl_line_buffer_len;
+extern int rl_editing_mode;
+extern char *rl_prompt;
+extern char *rl_line_buffer;
+extern HIST_ENTRY *saved_line_for_history;
+extern Function *rl_last_func;
+
+/* Functions imported from the rest of the library. */
+extern int _rl_free_history_entry ();
+extern char *_rl_make_prompt_for_search ();
+extern void _rl_restore_prompt ();
+extern void rl_extend_line_buffer ();
+
+static char *noninc_search_string = (char *) NULL;
+static int noninc_history_pos;
+static char *prev_line_found = (char *) NULL;
+
+/* Search the history list for STRING starting at absolute history position
+ POS. If STRING begins with `^', the search must match STRING at the
+ beginning of a history line, otherwise a full substring match is performed
+ for STRING. DIR < 0 means to search backwards through the history list,
+ DIR >= 0 means to search forward. */
+static int
+noninc_search_from_pos (string, pos, dir)
+ char *string;
+ int pos, dir;
+{
+ int ret, old;
+
+ old = where_history ();
+ history_set_pos (pos);
+
+ if (*string == '^')
+ ret = history_search_prefix (string + 1, dir);
+ else
+ ret = history_search (string, dir);
+
+ if (ret != -1)
+ ret = where_history ();
+
+ history_set_pos (old);
+ return (ret);
+}
+
+/* Search for a line in the history containing STRING. If DIR is < 0, the
+ search is backwards through previous entries, else through subsequent
+ entries. */
+static void
+noninc_dosearch (string, dir)
+ char *string;
+ int dir;
+{
+ int oldpos, pos, line_len;
+ HIST_ENTRY *entry;
+
+ if (string == 0 || *string == '\0' || noninc_history_pos < 0)
+ {
+ ding ();
+ return;
+ }
+
+ pos = noninc_search_from_pos (string, noninc_history_pos + dir, dir);
+ if (pos == -1)
+ {
+ /* Search failed, current history position unchanged. */
+ maybe_unsave_line ();
+ rl_clear_message ();
+ rl_point = 0;
+ ding ();
+ return;
+ }
+
+ noninc_history_pos = pos;
+
+ oldpos = where_history ();
+ history_set_pos (noninc_history_pos);
+ entry = current_history ();
+#if defined (VI_MODE)
+ if (rl_editing_mode != vi_mode)
+#endif
+ history_set_pos (oldpos);
+
+ line_len = strlen (entry->line);
+ if (line_len >= rl_line_buffer_len)
+ rl_extend_line_buffer (line_len);
+ strcpy (rl_line_buffer, entry->line);
+
+ rl_undo_list = (UNDO_LIST *)entry->data;
+ rl_end = strlen (rl_line_buffer);
+ rl_point = 0;
+ rl_clear_message ();
+
+ if (saved_line_for_history)
+ _rl_free_history_entry (saved_line_for_history);
+ saved_line_for_history = (HIST_ENTRY *)NULL;
+}
+
+/* Search non-interactively through the history list. DIR < 0 means to
+ search backwards through the history of previous commands; otherwise
+ the search is for commands subsequent to the current position in the
+ history list. PCHAR is the character to use for prompting when reading
+ the search string; if not specified (0), it defaults to `:'. */
+static void
+noninc_search (dir, pchar)
+ int dir;
+ int pchar;
+{
+ int saved_point, c;
+ char *p;
+
+ maybe_save_line ();
+ saved_point = rl_point;
+
+ /* Use the line buffer to read the search string. */
+ rl_line_buffer[0] = 0;
+ rl_end = rl_point = 0;
+
+ p = _rl_make_prompt_for_search (pchar ? pchar : ':');
+ rl_message (p, 0, 0);
+ free (p);
+
+#define SEARCH_RETURN _rl_restore_prompt (); return
+
+ /* Read the search string. */
+ while (c = rl_read_key ())
+ {
+ switch (c)
+ {
+ case CTRL('H'):
+ case RUBOUT:
+ if (rl_point == 0)
+ {
+ maybe_unsave_line ();
+ rl_clear_message ();
+ rl_point = saved_point;
+ SEARCH_RETURN;
+ }
+ rl_rubout (1, c);
+ break;
+
+ case CTRL('W'):
+ rl_unix_word_rubout (1, c);
+ break;
+
+ case CTRL('U'):
+ rl_unix_line_discard (1, c);
+ break;
+
+ case RETURN:
+ case NEWLINE:
+ goto dosearch;
+ /* NOTREACHED */
+ break;
+
+ case CTRL('C'):
+ case CTRL('G'):
+ maybe_unsave_line ();
+ rl_clear_message ();
+ rl_point = saved_point;
+ ding ();
+ SEARCH_RETURN;
+
+ default:
+ rl_insert (1, c);
+ break;
+ }
+ (*rl_redisplay_function) ();
+ }
+
+ dosearch:
+ /* If rl_point == 0, we want to re-use the previous search string and
+ start from the saved history position. If there's no previous search
+ string, punt. */
+ if (rl_point == 0)
+ {
+ if (!noninc_search_string)
+ {
+ ding ();
+ SEARCH_RETURN;
+ }
+ }
+ else
+ {
+ /* We want to start the search from the current history position. */
+ noninc_history_pos = where_history ();
+ if (noninc_search_string)
+ free (noninc_search_string);
+ noninc_search_string = savestring (rl_line_buffer);
+ }
+
+ _rl_restore_prompt ();
+ noninc_dosearch (noninc_search_string, dir);
+}
+
+/* Search forward through the history list for a string. If the vi-mode
+ code calls this, KEY will be `?'. */
+int
+rl_noninc_forward_search (count, key)
+ int count, key;
+{
+ noninc_search (1, (key == '?') ? '?' : 0);
+ return 0;
+}
+
+/* Reverse search the history list for a string. If the vi-mode code
+ calls this, KEY will be `/'. */
+int
+rl_noninc_reverse_search (count, key)
+ int count, key;
+{
+ noninc_search (-1, (key == '/') ? '/' : 0);
+ return 0;
+}
+
+/* Search forward through the history list for the last string searched
+ for. If there is no saved search string, abort. */
+int
+rl_noninc_forward_search_again (count, key)
+ int count, key;
+{
+ if (!noninc_search_string)
+ {
+ ding ();
+ return (-1);
+ }
+ noninc_dosearch (noninc_search_string, 1);
+ return 0;
+}
+
+/* Reverse search in the history list for the last string searched
+ for. If there is no saved search string, abort. */
+int
+rl_noninc_reverse_search_again (count, key)
+ int count, key;
+{
+ if (!noninc_search_string)
+ {
+ ding ();
+ return (-1);
+ }
+ noninc_dosearch (noninc_search_string, -1);
+ return 0;
+}
+
+static int
+rl_history_search_internal (count, direction)
+ int count, direction;
+{
+ HIST_ENTRY *temp, *old_temp;
+ int line_len;
+
+ maybe_save_line ();
+
+ temp = old_temp = (HIST_ENTRY *)NULL;
+ while (count)
+ {
+ temp = (direction < 0) ? previous_history () : next_history ();
+ if (temp == 0)
+ break;
+ /* On an empty prefix, make this the same as previous-history. */
+ if (rl_point == 0)
+ {
+ count--;
+ continue;
+ }
+ if (STREQN (rl_line_buffer, temp->line, rl_point))
+ {
+ /* Don't find multiple instances of the same line. */
+ if (prev_line_found && STREQ (prev_line_found, temp->line))
+ continue;
+ if (direction < 0)
+ old_temp = temp;
+ prev_line_found = temp->line;
+ count--;
+ }
+ }
+
+ if (temp == 0)
+ {
+ if (direction < 0 && old_temp)
+ temp = old_temp;
+ else
+ {
+ maybe_unsave_line ();
+ ding ();
+ return 1;
+ }
+ }
+
+ line_len = strlen (temp->line);
+ if (line_len >= rl_line_buffer_len)
+ rl_extend_line_buffer (line_len);
+ strcpy (rl_line_buffer, temp->line);
+ rl_undo_list = (UNDO_LIST *)temp->data;
+ rl_end = line_len;
+ return 0;
+}
+
+/* Search forward in the history for the string of characters
+ from the start of the line to rl_point. This is a non-incremental
+ search. */
+int
+rl_history_search_forward (count, ignore)
+ int count, ignore;
+{
+ if (count == 0)
+ return (0);
+ if (rl_last_func != rl_history_search_forward)
+ prev_line_found = (char *)NULL;
+ return (rl_history_search_internal (abs (count), (count > 0) ? 1 : -1));
+}
+
+/* Search backward through the history for the string of characters
+ from the start of the line to rl_point. This is a non-incremental
+ search. */
+int
+rl_history_search_backward (count, ignore)
+ int count, ignore;
+{
+ if (count == 0)
+ return (0);
+ if (rl_last_func != rl_history_search_backward)
+ prev_line_found = (char *)NULL;
+ return (rl_history_search_internal (abs (count), (count > 0) ? -1 : 1));
+}
diff --git a/contrib/libreadline/signals.c b/contrib/libreadline/signals.c
new file mode 100644
index 0000000..2fe7953
--- /dev/null
+++ b/contrib/libreadline/signals.c
@@ -0,0 +1,334 @@
+/* signals.c -- signal handling support for readline. */
+
+/* Copyright (C) 1987, 1989, 1992 Free Software Foundation, Inc.
+
+ This file is part of the GNU Readline Library, a library for
+ reading lines of text with interactive input and history editing.
+
+ The GNU Readline Library is free software; you can redistribute it
+ and/or modify it under the terms of the GNU General Public License
+ as published by the Free Software Foundation; either version 1, or
+ (at your option) any later version.
+
+ The GNU Readline Library is distributed in the hope that it will be
+ useful, but WITHOUT ANY WARRANTY; without even the implied warranty
+ of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ The GNU General Public License is often shipped with GNU software, and
+ is generally kept in a file called COPYING or LICENSE. If you do not
+ have a copy of the license, write to the Free Software Foundation,
+ 675 Mass Ave, Cambridge, MA 02139, USA. */
+#define READLINE_LIBRARY
+
+#if defined (HAVE_CONFIG_H)
+# include <config.h>
+#endif
+
+#include <stdio.h> /* Just for NULL. Yuck. */
+#include <sys/types.h>
+#include <signal.h>
+
+#if defined (HAVE_UNISTD_H)
+# include <unistd.h>
+#endif /* HAVE_UNISTD_H */
+
+/* System-specific feature definitions and include files. */
+#include "rldefs.h"
+
+#if defined (GWINSZ_IN_SYS_IOCTL)
+# include <sys/ioctl.h>
+#endif /* GWINSZ_IN_SYS_IOCTL */
+
+#if defined (__GO32__)
+# undef HANDLE_SIGNALS
+#endif /* __GO32__ */
+
+#if defined (HANDLE_SIGNALS)
+/* Some standard library routines. */
+#include "readline.h"
+#include "history.h"
+
+extern int readline_echoing_p;
+extern int rl_pending_input;
+extern int _rl_meta_flag;
+
+extern void free_undo_list ();
+extern void _rl_get_screen_size ();
+extern void _rl_redisplay_after_sigwinch ();
+extern void _rl_clean_up_for_exit ();
+extern void _rl_kill_kbd_macro ();
+extern void _rl_init_argument ();
+extern void rl_deprep_terminal (), rl_prep_terminal ();
+
+#if !defined (RETSIGTYPE)
+# if defined (VOID_SIGHANDLER)
+# define RETSIGTYPE void
+# else
+# define RETSIGTYPE int
+# endif /* !VOID_SIGHANDLER */
+#endif /* !RETSIGTYPE */
+
+#if defined (VOID_SIGHANDLER)
+# define SIGHANDLER_RETURN return
+#else
+# define SIGHANDLER_RETURN return (0)
+#endif
+
+/* This typedef is equivalant to the one for Function; it allows us
+ to say SigHandler *foo = signal (SIGKILL, SIG_IGN); */
+typedef RETSIGTYPE SigHandler ();
+
+static SigHandler *rl_set_sighandler ();
+
+/* **************************************************************** */
+/* */
+/* Signal Handling */
+/* */
+/* **************************************************************** */
+
+#if defined (HAVE_POSIX_SIGNALS)
+typedef struct sigaction sighandler_cxt;
+# define rl_sigaction(s, nh, oh) sigaction(s, nh, oh)
+#else
+typedef struct { SigHandler *sa_handler; } sighandler_cxt;
+# define sigemptyset(m)
+#endif /* !HAVE_POSIX_SIGNALS */
+
+static sighandler_cxt old_int, old_alrm;
+
+#if !defined (SHELL)
+static sighandler_cxt old_tstp, old_ttou, old_ttin, old_term;
+#endif /* !SHELL */
+
+#if defined (SIGWINCH)
+static sighandler_cxt old_winch;
+#endif
+
+/* Readline signal handler functions. */
+
+static RETSIGTYPE
+rl_signal_handler (sig)
+ int sig;
+{
+#if defined (HAVE_POSIX_SIGNALS)
+ sigset_t set;
+#else /* !HAVE_POSIX_SIGNALS */
+# if defined (HAVE_BSD_SIGNALS)
+ long omask;
+# endif /* HAVE_BSD_SIGNALS */
+#endif /* !HAVE_POSIX_SIGNALS */
+
+#if !defined (HAVE_BSD_SIGNALS) && !defined (HAVE_POSIX_SIGNALS)
+ /* Since the signal will not be blocked while we are in the signal
+ handler, ignore it until rl_clear_signals resets the catcher. */
+ if (sig == SIGINT || sig == SIGALRM)
+ rl_set_sighandler (sig, SIG_IGN, (sighandler_cxt *)NULL);
+#endif /* !HAVE_BSD_SIGNALS && !HAVE_POSIX_SIGNALS */
+
+ switch (sig)
+ {
+ case SIGINT:
+ {
+ register HIST_ENTRY *entry;
+
+ free_undo_list ();
+
+ entry = current_history ();
+ if (entry)
+ entry->data = (char *)NULL;
+ }
+ _rl_kill_kbd_macro ();
+ rl_clear_message ();
+ _rl_init_argument ();
+
+#if defined (SIGTSTP)
+ case SIGTSTP:
+ case SIGTTOU:
+ case SIGTTIN:
+#endif /* SIGTSTP */
+ case SIGALRM:
+ case SIGTERM:
+ _rl_clean_up_for_exit ();
+ (*rl_deprep_term_function) ();
+ rl_clear_signals ();
+ rl_pending_input = 0;
+
+#if defined (HAVE_POSIX_SIGNALS)
+ sigprocmask (SIG_BLOCK, (sigset_t *)NULL, &set);
+ sigdelset (&set, sig);
+#else /* !HAVE_POSIX_SIGNALS */
+# if defined (HAVE_BSD_SIGNALS)
+ omask = sigblock (0);
+# endif /* HAVE_BSD_SIGNALS */
+#endif /* !HAVE_POSIX_SIGNALS */
+
+ kill (getpid (), sig);
+
+ /* Let the signal that we just sent through. */
+#if defined (HAVE_POSIX_SIGNALS)
+ sigprocmask (SIG_SETMASK, &set, (sigset_t *)NULL);
+#else /* !HAVE_POSIX_SIGNALS */
+# if defined (HAVE_BSD_SIGNALS)
+ sigsetmask (omask & ~(sigmask (sig)));
+# endif /* HAVE_BSD_SIGNALS */
+#endif /* !HAVE_POSIX_SIGNALS */
+
+ (*rl_prep_term_function) (_rl_meta_flag);
+ rl_set_signals ();
+ }
+
+ SIGHANDLER_RETURN;
+}
+
+#if defined (SIGWINCH)
+static RETSIGTYPE
+rl_handle_sigwinch (sig)
+ int sig;
+{
+ SigHandler *oh;
+
+ if (readline_echoing_p)
+ {
+ _rl_get_screen_size (fileno (rl_instream), 1);
+ _rl_redisplay_after_sigwinch ();
+ }
+
+ /* If another sigwinch handler has been installed, call it. */
+ oh = (SigHandler *)old_winch.sa_handler;
+ if (oh && oh != (SigHandler *)SIG_IGN && oh != (SigHandler *)SIG_DFL)
+ (*oh) (sig);
+
+ SIGHANDLER_RETURN;
+}
+#endif /* SIGWINCH */
+
+/* Functions to manage signal handling. */
+
+#if !defined (HAVE_POSIX_SIGNALS)
+static int
+rl_sigaction (sig, nh, oh)
+ int sig;
+ sighandler_cxt *nh, *oh;
+{
+ oh->sa_handler = signal (sig, nh->sa_handler);
+ return 0;
+}
+#endif /* !HAVE_POSIX_SIGNALS */
+
+/* Set up a readline-specific signal handler, saving the old signal
+ information in OHANDLER. Return the old signal handler, like
+ signal(). */
+static SigHandler *
+rl_set_sighandler (sig, handler, ohandler)
+ int sig;
+ SigHandler *handler;
+ sighandler_cxt *ohandler;
+{
+#if defined (HAVE_POSIX_SIGNALS)
+ struct sigaction act;
+
+ act.sa_handler = handler;
+ act.sa_flags = 0;
+ sigemptyset (&act.sa_mask);
+ sigemptyset (&ohandler->sa_mask);
+ sigaction (sig, &act, ohandler);
+#else
+ ohandler->sa_handler = (SigHandler *)signal (sig, handler);
+#endif /* !HAVE_POSIX_SIGNALS */
+ return (ohandler->sa_handler);
+}
+
+int
+rl_set_signals ()
+{
+ sighandler_cxt dummy;
+ SigHandler *oh;
+
+#if defined (HAVE_POSIX_SIGNALS)
+ sigemptyset (&dummy.sa_mask);
+#endif
+
+ oh = rl_set_sighandler (SIGINT, rl_signal_handler, &old_int);
+ if (oh == (SigHandler *)SIG_IGN)
+ rl_sigaction (SIGINT, &old_int, &dummy);
+
+ oh = rl_set_sighandler (SIGALRM, rl_signal_handler, &old_alrm);
+ if (oh == (SigHandler *)SIG_IGN)
+ rl_sigaction (SIGALRM, &old_alrm, &dummy);
+#if defined (HAVE_POSIX_SIGNALS) && defined (SA_RESTART)
+ /* If the application using readline has already installed a signal
+ handler with SA_RESTART, SIGALRM will cause reads to be restarted
+ automatically, so readline should just get out of the way. Since
+ we tested for SIG_IGN above, we can just test for SIG_DFL here. */
+ if (oh != (SigHandler *)SIG_DFL && (old_alrm.sa_flags & SA_RESTART))
+ rl_sigaction (SIGALRM, &old_alrm, &dummy);
+#endif /* HAVE_POSIX_SIGNALS */
+
+#if !defined (SHELL)
+
+#if defined (SIGTSTP)
+ oh = rl_set_sighandler (SIGTSTP, rl_signal_handler, &old_tstp);
+ if (oh == (SigHandler *)SIG_IGN)
+ rl_sigaction (SIGTSTP, &old_tstp, &dummy);
+#else
+ oh = (SigHandler *)NULL;
+#endif /* SIGTSTP */
+
+#if defined (SIGTTOU)
+ rl_set_sighandler (SIGTTOU, rl_signal_handler, &old_ttou);
+ rl_set_sighandler (SIGTTIN, rl_signal_handler, &old_ttin);
+
+ if (oh == (SigHandler *)SIG_IGN)
+ {
+ rl_set_sighandler (SIGTTOU, SIG_IGN, &dummy);
+ rl_set_sighandler (SIGTTIN, SIG_IGN, &dummy);
+ }
+#endif /* SIGTTOU */
+
+ /* Handle SIGTERM if we're not being compiled as part of bash. */
+ rl_set_sighandler (SIGTERM, rl_signal_handler, &old_term);
+#endif /* !SHELL */
+
+#if defined (SIGWINCH)
+ rl_set_sighandler (SIGWINCH, rl_handle_sigwinch, &old_winch);
+#endif /* SIGWINCH */
+
+ return 0;
+}
+
+int
+rl_clear_signals ()
+{
+ sighandler_cxt dummy;
+
+#if defined (HAVE_POSIX_SIGNALS)
+ sigemptyset (&dummy.sa_mask);
+#endif
+
+ rl_sigaction (SIGINT, &old_int, &dummy);
+ rl_sigaction (SIGALRM, &old_alrm, &dummy);
+
+#if !defined (SHELL)
+
+#if defined (SIGTSTP)
+ rl_sigaction (SIGTSTP, &old_tstp, &dummy);
+#endif
+
+#if defined (SIGTTOU)
+ rl_sigaction (SIGTTOU, &old_ttou, &dummy);
+ rl_sigaction (SIGTTIN, &old_ttin, &dummy);
+#endif /* SIGTTOU */
+
+ rl_sigaction (SIGTERM, &old_term, &dummy);
+
+#endif /* !SHELL */
+
+#if defined (SIGWINCH)
+ sigemptyset (&dummy.sa_mask);
+ rl_sigaction (SIGWINCH, &old_winch, &dummy);
+#endif
+
+ return 0;
+}
+#endif /* HANDLE_SIGNALS */
diff --git a/contrib/libreadline/tcap.h b/contrib/libreadline/tcap.h
new file mode 100644
index 0000000..0673288
--- /dev/null
+++ b/contrib/libreadline/tcap.h
@@ -0,0 +1,57 @@
+/* tcap.h -- termcap library functions and variables. */
+
+/* Copyright (C) 1996 Free Software Foundation, Inc.
+
+ This file contains the Readline Library (the Library), a set of
+ routines for providing Emacs style line input to programs that ask
+ for it.
+
+ The Library is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 1, or (at your option)
+ any later version.
+
+ The Library is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ General Public License for more details.
+
+ The GNU General Public License is often shipped with GNU software, and
+ is generally kept in a file called COPYING or LICENSE. If you do not
+ have a copy of the license, write to the Free Software Foundation,
+ 675 Mass Ave, Cambridge, MA 02139, USA. */
+
+#if !defined (_RLTCAP_H_)
+#define _RLTCAP_H_
+
+#if defined (HAVE_CONFIG_H)
+# include "config.h"
+#endif
+
+#if defined (HAVE_TERMCAP_H)
+# include <termcap.h>
+#else
+
+/* On Solaris2, sys/types.h #includes sys/reg.h, which #defines PC.
+ Unfortunately, PC is a global variable used by the termcap library. */
+#ifdef PC
+# undef PC
+#endif
+
+extern char PC;
+extern char *UP, *BC;
+
+extern short ospeed;
+
+extern int tgetent ();
+extern int tgetflag ();
+extern int tgetnum ();
+extern char *tgetstr ();
+
+extern int tputs ();
+
+extern char *tgoto ();
+
+#endif /* HAVE_TERMCAP_H */
+
+#endif /* !_RLTCAP_H_ */
diff --git a/contrib/libreadline/terminal.c b/contrib/libreadline/terminal.c
new file mode 100644
index 0000000..9ca9bc6
--- /dev/null
+++ b/contrib/libreadline/terminal.c
@@ -0,0 +1,554 @@
+/* terminal.c -- controlling the terminal with termcap. */
+
+/* Copyright (C) 1996 Free Software Foundation, Inc.
+
+ This file is part of the GNU Readline Library, a library for
+ reading lines of text with interactive input and history editing.
+
+ The GNU Readline Library is free software; you can redistribute it
+ and/or modify it under the terms of the GNU General Public License
+ as published by the Free Software Foundation; either version 1, or
+ (at your option) any later version.
+
+ The GNU Readline Library is distributed in the hope that it will be
+ useful, but WITHOUT ANY WARRANTY; without even the implied warranty
+ of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ The GNU General Public License is often shipped with GNU software, and
+ is generally kept in a file called COPYING or LICENSE. If you do not
+ have a copy of the license, write to the Free Software Foundation,
+ 675 Mass Ave, Cambridge, MA 02139, USA. */
+#define READLINE_LIBRARY
+
+#if defined (HAVE_CONFIG_H)
+# include <config.h>
+#endif
+
+#include <sys/types.h>
+#include "posixstat.h"
+#include <fcntl.h>
+#if defined (HAVE_SYS_FILE_H)
+# include <sys/file.h>
+#endif /* HAVE_SYS_FILE_H */
+
+#if defined (HAVE_UNISTD_H)
+# include <unistd.h>
+#endif /* HAVE_UNISTD_H */
+
+#if defined (HAVE_STDLIB_H)
+# include <stdlib.h>
+#else
+# include "ansi_stdlib.h"
+#endif /* HAVE_STDLIB_H */
+
+#if defined (HAVE_LOCALE_H)
+# include <locale.h>
+#endif
+
+#include <signal.h>
+#include <stdio.h>
+#include <setjmp.h>
+
+/* System-specific feature definitions and include files. */
+#include "rldefs.h"
+
+#include "tcap.h"
+
+#if defined (GWINSZ_IN_SYS_IOCTL)
+# include <sys/ioctl.h>
+#endif /* GWINSZ_IN_SYS_IOCTL */
+
+/* Some standard library routines. */
+#include "readline.h"
+#include "history.h"
+
+/* Variables and functions imported from readline.c */
+extern FILE *_rl_in_stream, *_rl_out_stream;
+extern int readline_echoing_p;
+extern int _rl_bell_preference;
+extern Keymap _rl_keymap;
+
+/* **************************************************************** */
+/* */
+/* Terminal and Termcap */
+/* */
+/* **************************************************************** */
+
+static char *term_buffer = (char *)NULL;
+static char *term_string_buffer = (char *)NULL;
+
+static int tcap_initialized;
+
+/* Non-zero means this terminal can't really do anything. */
+static int dumb_term;
+
+#if !defined (__linux__)
+/* If this causes problems, add back the `extern'. */
+/*extern*/ char PC, *BC, *UP;
+#endif /* __linux__ */
+
+/* Some strings to control terminal actions. These are output by tputs (). */
+char *term_goto, *term_clreol, *term_cr, *term_clrpag, *term_backspace;
+char *term_pc;
+
+/* Non-zero if we determine that the terminal can do character insertion. */
+int terminal_can_insert = 0;
+
+/* How to insert characters. */
+char *term_im, *term_ei, *term_ic, *term_ip, *term_IC;
+
+/* How to delete characters. */
+char *term_dc, *term_DC;
+
+#if defined (HACK_TERMCAP_MOTION)
+char *term_forward_char;
+#endif /* HACK_TERMCAP_MOTION */
+
+/* How to go up a line. */
+char *term_up;
+
+/* A visible bell, if the terminal can be made to flash the screen. */
+static char *visible_bell;
+
+/* Non-zero means the terminal can auto-wrap lines. */
+int _rl_term_autowrap;
+
+/* Non-zero means that this terminal has a meta key. */
+static int term_has_meta;
+
+/* The sequences to write to turn on and off the meta key, if this
+ terminal has one. */
+static char *term_mm, *term_mo;
+
+/* The key sequences output by the arrow keys, if this terminal has any. */
+static char *term_ku, *term_kd, *term_kr, *term_kl;
+
+/* How to initialize and reset the arrow keys, if this terminal has any. */
+static char *term_ks, *term_ke;
+
+/* The key sequences sent by the Home and End keys, if any. */
+static char *term_kh, *term_kH;
+
+/* Variables that hold the screen dimensions, used by the display code. */
+int screenwidth, screenheight, screenchars;
+
+/* Non-zero means the user wants to enable the keypad. */
+int _rl_enable_keypad;
+
+/* Non-zero means the user wants to enable a meta key. */
+int _rl_enable_meta = 1;
+
+/* Re-initialize the terminal considering that the TERM/TERMCAP variable
+ has changed. */
+int
+rl_reset_terminal (terminal_name)
+ char *terminal_name;
+{
+ _rl_init_terminal_io (terminal_name);
+ return 0;
+}
+
+#if !defined (SHELL)
+static void
+set_lines_and_columns (lines, cols)
+ int lines, cols;
+{
+ char *b;
+
+#if defined (HAVE_PUTENV)
+ b = xmalloc (24);
+ sprintf (b, "LINES=%d", lines);
+ putenv (b);
+ b = xmalloc (24);
+ sprintf (b, "COLUMNS=%d", cols);
+ putenv (b);
+#else /* !HAVE_PUTENV */
+# if defined (HAVE_SETENV)
+ b = xmalloc (8);
+ sprintf (b, "%d", lines);
+ setenv ("LINES", b, 1);
+ b = xmalloc (8);
+ sprintf (b, "%d", cols);
+ setenv ("COLUMNS", b, 1);
+# endif /* HAVE_SETENV */
+#endif /* !HAVE_PUTENV */
+}
+#else /* SHELL */
+extern void set_lines_and_columns ();
+#endif /* SHELL */
+
+/* Get readline's idea of the screen size. TTY is a file descriptor open
+ to the terminal. If IGNORE_ENV is true, we do not pay attention to the
+ values of $LINES and $COLUMNS. The tests for TERM_STRING_BUFFER being
+ non-null serve to check whether or not we have initialized termcap. */
+void
+_rl_get_screen_size (tty, ignore_env)
+ int tty, ignore_env;
+{
+ char *ss;
+#if defined (TIOCGWINSZ)
+ struct winsize window_size;
+#endif /* TIOCGWINSZ */
+
+#if defined (TIOCGWINSZ)
+ if (ioctl (tty, TIOCGWINSZ, &window_size) == 0)
+ {
+ screenwidth = (int) window_size.ws_col;
+ screenheight = (int) window_size.ws_row;
+ }
+#endif /* TIOCGWINSZ */
+
+ /* Environment variable COLUMNS overrides setting of "co" if IGNORE_ENV
+ is unset. */
+ if (screenwidth <= 0)
+ {
+ if (ignore_env == 0 && (ss = getenv ("COLUMNS")))
+ screenwidth = atoi (ss);
+
+ if (screenwidth <= 0 && term_string_buffer)
+ screenwidth = tgetnum ("co");
+ }
+
+ /* Environment variable LINES overrides setting of "li" if IGNORE_ENV
+ is unset. */
+ if (screenheight <= 0)
+ {
+ if (ignore_env == 0 && (ss = getenv ("LINES")))
+ screenheight = atoi (ss);
+
+ if (screenheight <= 0 && term_string_buffer)
+ screenheight = tgetnum ("li");
+ }
+
+ /* If all else fails, default to 80x24 terminal. */
+ if (screenwidth <= 1)
+ screenwidth = 80;
+
+ if (screenheight <= 0)
+ screenheight = 24;
+
+ /* If we're being compiled as part of bash, set the environment
+ variables $LINES and $COLUMNS to new values. Otherwise, just
+ do a pair of putenv () or setenv () calls. */
+ set_lines_and_columns (screenheight, screenwidth);
+
+ if (!_rl_term_autowrap)
+ screenwidth--;
+
+ screenchars = screenwidth * screenheight;
+}
+
+void
+_rl_set_screen_size (rows, cols)
+ int rows, cols;
+{
+ screenheight = rows;
+ screenwidth = cols;
+
+ if (_rl_term_autowrap == 0)
+ screenwidth--;
+
+ screenchars = screenwidth * screenheight;
+}
+
+struct _tc_string {
+ char *tc_var;
+ char **tc_value;
+};
+
+/* This should be kept sorted, just in case we decide to change the
+ search algorithm to something smarter. */
+static struct _tc_string tc_strings[] =
+{
+ "DC", &term_DC,
+ "IC", &term_IC,
+ "ce", &term_clreol,
+ "cl", &term_clrpag,
+ "cr", &term_cr,
+ "dc", &term_dc,
+ "ei", &term_ei,
+ "ic", &term_ic,
+ "im", &term_im,
+ "kd", &term_kd,
+ "kh", &term_kh, /* home */
+ "kH", &term_kH, /* end */
+ "kl", &term_kl,
+ "kr", &term_kr,
+ "ku", &term_ku,
+ "ks", &term_ks,
+ "ke", &term_ke,
+ "le", &term_backspace,
+ "mm", &term_mm,
+ "mo", &term_mo,
+#if defined (HACK_TERMCAP_MOTION)
+ "nd", &term_forward_char,
+#endif
+ "pc", &term_pc,
+ "up", &term_up,
+ "vb", &visible_bell,
+};
+
+#define NUM_TC_STRINGS (sizeof (tc_strings) / sizeof (struct _tc_string))
+
+/* Read the desired terminal capability strings into BP. The capabilities
+ are described in the TC_STRINGS table. */
+static void
+get_term_capabilities (bp)
+ char **bp;
+{
+ register int i;
+
+ for (i = 0; i < NUM_TC_STRINGS; i++)
+ *(tc_strings[i].tc_value) = tgetstr (tc_strings[i].tc_var, bp);
+ tcap_initialized = 1;
+}
+
+int
+_rl_init_terminal_io (terminal_name)
+ char *terminal_name;
+{
+#if defined (__GO32__)
+ screenwidth = ScreenCols ();
+ screenheight = ScreenRows ();
+ screenchars = screenwidth * screenheight;
+ term_cr = "\r";
+ term_im = term_ei = term_ic = term_IC = (char *)NULL;
+ term_up = term_dc = term_DC = visible_bell = (char *)NULL;
+
+ /* Does the __GO32__ have a meta key? I don't know. */
+ term_has_meta = 0;
+ term_mm = term_mo = (char *)NULL;
+
+ /* It probably has arrow keys, but I don't know what they are. */
+ term_ku = term_kd = term_kr = term_kl = (char *)NULL;
+
+#if defined (HACK_TERMCAP_MOTION)
+ term_forward_char = (char *)NULL;
+#endif /* HACK_TERMCAP_MOTION */
+ terminal_can_insert = _rl_term_autowrap = 0;
+ return;
+#else /* !__GO32__ */
+
+ char *term, *buffer;
+ int tty;
+ Keymap xkeymap;
+
+ term = terminal_name ? terminal_name : getenv ("TERM");
+
+ if (term_string_buffer == 0)
+ term_string_buffer = xmalloc (2032);
+
+ if (term_buffer == 0)
+ term_buffer = xmalloc (4080);
+
+ buffer = term_string_buffer;
+
+ term_clrpag = term_cr = term_clreol = (char *)NULL;
+
+ if (term == 0)
+ term = "dumb";
+
+ if (tgetent (term_buffer, term) <= 0)
+ {
+ dumb_term = 1;
+ screenwidth = 79;
+ screenheight = 24;
+ screenchars = 79 * 24;
+ term_cr = "\r";
+ term_im = term_ei = term_ic = term_IC = (char *)NULL;
+ term_up = term_dc = term_DC = visible_bell = (char *)NULL;
+ term_ku = term_kd = term_kl = term_kr = (char *)NULL;
+#if defined (HACK_TERMCAP_MOTION)
+ term_forward_char = (char *)NULL;
+#endif
+ terminal_can_insert = 0;
+ return 0;
+ }
+
+ get_term_capabilities (&buffer);
+
+ /* Set up the variables that the termcap library expects the application
+ to provide. */
+ PC = term_pc ? *term_pc : 0;
+ BC = term_backspace;
+ UP = term_up;
+
+ if (!term_cr)
+ term_cr = "\r";
+
+ tty = rl_instream ? fileno (rl_instream) : 0;
+
+ screenwidth = screenheight = 0;
+
+ _rl_term_autowrap = tgetflag ("am") && tgetflag ("xn");
+
+ _rl_get_screen_size (tty, 0);
+
+ /* "An application program can assume that the terminal can do
+ character insertion if *any one of* the capabilities `IC',
+ `im', `ic' or `ip' is provided." But we can't do anything if
+ only `ip' is provided, so... */
+ terminal_can_insert = (term_IC || term_im || term_ic);
+
+ /* Check to see if this terminal has a meta key and clear the capability
+ variables if there is none. */
+ term_has_meta = (tgetflag ("km") || tgetflag ("MT"));
+ if (!term_has_meta)
+ term_mm = term_mo = (char *)NULL;
+
+ /* Attempt to find and bind the arrow keys. Do not override already
+ bound keys in an overzealous attempt, however. */
+ xkeymap = _rl_keymap;
+
+ _rl_keymap = emacs_standard_keymap;
+ _rl_bind_if_unbound (term_ku, rl_get_previous_history);
+ _rl_bind_if_unbound (term_kd, rl_get_next_history);
+ _rl_bind_if_unbound (term_kr, rl_forward);
+ _rl_bind_if_unbound (term_kl, rl_backward);
+
+ _rl_bind_if_unbound (term_kh, rl_beg_of_line); /* Home */
+ _rl_bind_if_unbound (term_kH, rl_end_of_line); /* End */
+
+#if defined (VI_MODE)
+ _rl_keymap = vi_movement_keymap;
+ _rl_bind_if_unbound (term_ku, rl_get_previous_history);
+ _rl_bind_if_unbound (term_kd, rl_get_next_history);
+ _rl_bind_if_unbound (term_kr, rl_forward);
+ _rl_bind_if_unbound (term_kl, rl_backward);
+
+ _rl_bind_if_unbound (term_kh, rl_beg_of_line); /* Home */
+ _rl_bind_if_unbound (term_kH, rl_end_of_line); /* End */
+#endif /* VI_MODE */
+
+ _rl_keymap = xkeymap;
+
+#endif /* !__GO32__ */
+ return 0;
+}
+
+char *
+rl_get_termcap (cap)
+ char *cap;
+{
+ register int i;
+
+ if (tcap_initialized == 0)
+ return ((char *)NULL);
+ for (i = 0; i < NUM_TC_STRINGS; i++)
+ {
+ if (tc_strings[i].tc_var[0] == cap[0] && strcmp (tc_strings[i].tc_var, cap) == 0)
+ return *(tc_strings[i].tc_value);
+ }
+ return ((char *)NULL);
+}
+
+/* A function for the use of tputs () */
+int
+_rl_output_character_function (c)
+ int c;
+{
+ return putc (c, _rl_out_stream);
+}
+
+/* Write COUNT characters from STRING to the output stream. */
+void
+_rl_output_some_chars (string, count)
+ char *string;
+ int count;
+{
+ fwrite (string, 1, count, _rl_out_stream);
+}
+
+/* Move the cursor back. */
+int
+_rl_backspace (count)
+ int count;
+{
+ register int i;
+
+#if !defined (__GO32__)
+ if (term_backspace)
+ for (i = 0; i < count; i++)
+ tputs (term_backspace, 1, _rl_output_character_function);
+ else
+#endif /* !__GO32__ */
+ for (i = 0; i < count; i++)
+ putc ('\b', _rl_out_stream);
+ return 0;
+}
+
+/* Move to the start of the next line. */
+int
+crlf ()
+{
+#if defined (NEW_TTY_DRIVER)
+ if (term_cr)
+ tputs (term_cr, 1, _rl_output_character_function);
+#endif /* NEW_TTY_DRIVER */
+ putc ('\n', _rl_out_stream);
+ return 0;
+}
+
+/* Ring the terminal bell. */
+int
+ding ()
+{
+ if (readline_echoing_p)
+ {
+#if !defined (__GO32__)
+ switch (_rl_bell_preference)
+ {
+ case NO_BELL:
+ default:
+ break;
+ case VISIBLE_BELL:
+ if (visible_bell)
+ {
+ tputs (visible_bell, 1, _rl_output_character_function);
+ break;
+ }
+ /* FALLTHROUGH */
+ case AUDIBLE_BELL:
+ fprintf (stderr, "\007");
+ fflush (stderr);
+ break;
+ }
+#else /* __GO32__ */
+ fprintf (stderr, "\007");
+ fflush (stderr);
+#endif /* __GO32__ */
+ return (0);
+ }
+ return (-1);
+}
+
+/* **************************************************************** */
+/* */
+/* Controlling the Meta Key and Keypad */
+/* */
+/* **************************************************************** */
+
+static int
+outchar (c)
+ int c;
+{
+ return putc (c, rl_outstream);
+}
+
+int
+_rl_enable_meta_key ()
+{
+ if (term_has_meta && term_mm)
+ tputs (term_mm, 1, outchar);
+}
+
+void
+_rl_control_keypad (on)
+ int on;
+{
+ if (on && term_ks)
+ tputs (term_ks, 1, outchar);
+ else if (!on && term_ke)
+ tputs (term_ke, 1, outchar);
+}
diff --git a/contrib/libreadline/tilde.c b/contrib/libreadline/tilde.c
new file mode 100644
index 0000000..69f5768
--- /dev/null
+++ b/contrib/libreadline/tilde.c
@@ -0,0 +1,390 @@
+/* tilde.c -- Tilde expansion code (~/foo := $HOME/foo). */
+
+/* Copyright (C) 1988,1989 Free Software Foundation, Inc.
+
+ This file is part of GNU Readline, a library for reading lines
+ of text with interactive input and history editing.
+
+ Readline is free software; you can redistribute it and/or modify it
+ under the terms of the GNU General Public License as published by the
+ Free Software Foundation; either version 1, or (at your option) any
+ later version.
+
+ Readline is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with Readline; see the file COPYING. If not, write to the Free
+ Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
+
+#if defined (HAVE_CONFIG_H)
+# include <config.h>
+#endif
+
+#if defined (HAVE_STRING_H)
+# include <string.h>
+#else /* !HAVE_STRING_H */
+# include <strings.h>
+#endif /* !HAVE_STRING_H */
+
+#if defined (HAVE_STDLIB_H)
+# include <stdlib.h>
+#else
+# include "ansi_stdlib.h"
+#endif /* HAVE_STDLIB_H */
+
+#include <sys/types.h>
+#include <pwd.h>
+
+#include "tilde.h"
+
+#if !defined (HAVE_GETPW_DECLS)
+extern struct passwd *getpwuid (), *getpwnam ();
+#endif /* !HAVE_GETPW_DECLS */
+
+#if !defined (savestring)
+extern char *xmalloc ();
+# ifndef strcpy
+extern char *strcpy ();
+# endif
+#define savestring(x) strcpy (xmalloc (1 + strlen (x)), (x))
+#endif /* !savestring */
+
+#if !defined (NULL)
+# if defined (__STDC__)
+# define NULL ((void *) 0)
+# else
+# define NULL 0x0
+# endif /* !__STDC__ */
+#endif /* !NULL */
+
+#if defined (TEST) || defined (STATIC_MALLOC)
+static char *xmalloc (), *xrealloc ();
+#else
+extern char *xmalloc (), *xrealloc ();
+#endif /* TEST || STATIC_MALLOC */
+
+/* The default value of tilde_additional_prefixes. This is set to
+ whitespace preceding a tilde so that simple programs which do not
+ perform any word separation get desired behaviour. */
+static char *default_prefixes[] =
+ { " ~", "\t~", (char *)NULL };
+
+/* The default value of tilde_additional_suffixes. This is set to
+ whitespace or newline so that simple programs which do not
+ perform any word separation get desired behaviour. */
+static char *default_suffixes[] =
+ { " ", "\n", (char *)NULL };
+
+/* If non-null, this contains the address of a function to call if the
+ standard meaning for expanding a tilde fails. The function is called
+ with the text (sans tilde, as in "foo"), and returns a malloc()'ed string
+ which is the expansion, or a NULL pointer if there is no expansion. */
+CPFunction *tilde_expansion_failure_hook = (CPFunction *)NULL;
+
+/* When non-null, this is a NULL terminated array of strings which
+ are duplicates for a tilde prefix. Bash uses this to expand
+ `=~' and `:~'. */
+char **tilde_additional_prefixes = default_prefixes;
+
+/* When non-null, this is a NULL terminated array of strings which match
+ the end of a username, instead of just "/". Bash sets this to
+ `:' and `=~'. */
+char **tilde_additional_suffixes = default_suffixes;
+
+/* Find the start of a tilde expansion in STRING, and return the index of
+ the tilde which starts the expansion. Place the length of the text
+ which identified this tilde starter in LEN, excluding the tilde itself. */
+static int
+tilde_find_prefix (string, len)
+ char *string;
+ int *len;
+{
+ register int i, j, string_len;
+ register char **prefixes = tilde_additional_prefixes;
+
+ string_len = strlen (string);
+ *len = 0;
+
+ if (!*string || *string == '~')
+ return (0);
+
+ if (prefixes)
+ {
+ for (i = 0; i < string_len; i++)
+ {
+ for (j = 0; prefixes[j]; j++)
+ {
+ if (strncmp (string + i, prefixes[j], strlen (prefixes[j])) == 0)
+ {
+ *len = strlen (prefixes[j]) - 1;
+ return (i + *len);
+ }
+ }
+ }
+ }
+ return (string_len);
+}
+
+/* Find the end of a tilde expansion in STRING, and return the index of
+ the character which ends the tilde definition. */
+static int
+tilde_find_suffix (string)
+ char *string;
+{
+ register int i, j, string_len;
+ register char **suffixes = tilde_additional_suffixes;
+
+ string_len = strlen (string);
+
+ for (i = 0; i < string_len; i++)
+ {
+ if (string[i] == '/' || !string[i])
+ break;
+
+ for (j = 0; suffixes && suffixes[j]; j++)
+ {
+ if (strncmp (string + i, suffixes[j], strlen (suffixes[j])) == 0)
+ return (i);
+ }
+ }
+ return (i);
+}
+
+/* Return a new string which is the result of tilde expanding STRING. */
+char *
+tilde_expand (string)
+ char *string;
+{
+ char *result, *tilde_expand_word ();
+ int result_size, result_index;
+
+ result_size = result_index = 0;
+ result = (char *)NULL;
+
+ /* Scan through STRING expanding tildes as we come to them. */
+ while (1)
+ {
+ register int start, end;
+ char *tilde_word, *expansion;
+ int len;
+
+ /* Make START point to the tilde which starts the expansion. */
+ start = tilde_find_prefix (string, &len);
+
+ /* Copy the skipped text into the result. */
+ if ((result_index + start + 1) > result_size)
+ result = xrealloc (result, 1 + (result_size += (start + 20)));
+
+ strncpy (result + result_index, string, start);
+ result_index += start;
+
+ /* Advance STRING to the starting tilde. */
+ string += start;
+
+ /* Make END be the index of one after the last character of the
+ username. */
+ end = tilde_find_suffix (string);
+
+ /* If both START and END are zero, we are all done. */
+ if (!start && !end)
+ break;
+
+ /* Expand the entire tilde word, and copy it into RESULT. */
+ tilde_word = xmalloc (1 + end);
+ strncpy (tilde_word, string, end);
+ tilde_word[end] = '\0';
+ string += end;
+
+ expansion = tilde_expand_word (tilde_word);
+ free (tilde_word);
+
+ len = strlen (expansion);
+ if ((result_index + len + 1) > result_size)
+ result = xrealloc (result, 1 + (result_size += (len + 20)));
+
+ strcpy (result + result_index, expansion);
+ result_index += len;
+ free (expansion);
+ }
+
+ result[result_index] = '\0';
+
+ return (result);
+}
+
+/* Do the work of tilde expansion on FILENAME. FILENAME starts with a
+ tilde. If there is no expansion, call tilde_expansion_failure_hook. */
+char *
+tilde_expand_word (filename)
+ char *filename;
+{
+ char *dirname;
+ char *temp_name;
+
+ if (filename == (char *)0)
+ return ((char *)NULL);
+
+ dirname = savestring (filename);
+
+ if (*dirname != '~')
+ return (dirname);
+
+ if (!dirname[1] || dirname[1] == '/')
+ {
+ /* Prepend $HOME to the rest of the string. */
+ char *temp_home = (char *)getenv ("HOME");
+ int home_len;
+
+ /* If there is no HOME variable, look up the directory in
+ the password database. */
+ if (!temp_home)
+ {
+ struct passwd *entry;
+
+ entry = getpwuid (getuid ());
+ if (entry)
+ temp_home = entry->pw_dir;
+ }
+
+ home_len = temp_home ? strlen (temp_home) : 0;
+ temp_name = xmalloc (1 + strlen (dirname + 1) + home_len);
+
+ if (temp_home)
+ strcpy (temp_name, temp_home);
+ strcpy (temp_name + home_len, dirname + 1);
+ free (dirname);
+ dirname = temp_name;
+ }
+ else
+ {
+ char *username;
+ struct passwd *user_entry;
+ int i, len;
+
+ username = xmalloc (strlen (dirname));
+ for (i = 1; dirname[i] && dirname[i] != '/'; i++)
+ username[i - 1] = dirname[i];
+ username[i - 1] = '\0';
+
+ if ((user_entry = getpwnam (username)) == (struct passwd *)0)
+ {
+ /* If the calling program has a special syntax for
+ expanding tildes, and we couldn't find a standard
+ expansion, then let them try. */
+ if (tilde_expansion_failure_hook)
+ {
+ char *expansion;
+
+ expansion = (*tilde_expansion_failure_hook) (username);
+
+ if (expansion)
+ {
+ len = strlen (expansion);
+ temp_name = xmalloc (1 + len + strlen (dirname + i));
+ strcpy (temp_name, expansion);
+ strcpy (temp_name + len, dirname + i);
+ free (expansion);
+ free (dirname);
+ dirname = temp_name;
+ }
+ }
+ /* We shouldn't report errors. */
+ }
+ else
+ {
+ len = strlen (user_entry->pw_dir);
+ temp_name = xmalloc (1 + len + strlen (dirname + i));
+ strcpy (temp_name, user_entry->pw_dir);
+ strcpy (temp_name + len, dirname + i);
+ free (dirname);
+ dirname = temp_name;
+ }
+ endpwent ();
+ free (username);
+ }
+
+ return (dirname);
+}
+
+
+#if defined (TEST)
+#undef NULL
+#include <stdio.h>
+
+main (argc, argv)
+ int argc;
+ char **argv;
+{
+ char *result, line[512];
+ int done = 0;
+
+ while (!done)
+ {
+ printf ("~expand: ");
+ fflush (stdout);
+
+ if (!gets (line))
+ strcpy (line, "done");
+
+ if ((strcmp (line, "done") == 0) ||
+ (strcmp (line, "quit") == 0) ||
+ (strcmp (line, "exit") == 0))
+ {
+ done = 1;
+ break;
+ }
+
+ result = tilde_expand (line);
+ printf (" --> %s\n", result);
+ free (result);
+ }
+ exit (0);
+}
+
+static void memory_error_and_abort ();
+
+static char *
+xmalloc (bytes)
+ int bytes;
+{
+ char *temp = (char *)malloc (bytes);
+
+ if (!temp)
+ memory_error_and_abort ();
+ return (temp);
+}
+
+static char *
+xrealloc (pointer, bytes)
+ char *pointer;
+ int bytes;
+{
+ char *temp;
+
+ if (!pointer)
+ temp = (char *)malloc (bytes);
+ else
+ temp = (char *)realloc (pointer, bytes);
+
+ if (!temp)
+ memory_error_and_abort ();
+
+ return (temp);
+}
+
+static void
+memory_error_and_abort ()
+{
+ fprintf (stderr, "readline: out of virtual memory\n");
+ abort ();
+}
+
+/*
+ * Local variables:
+ * compile-command: "gcc -g -DTEST -o tilde tilde.c"
+ * end:
+ */
+#endif /* TEST */
diff --git a/contrib/libreadline/tilde.h b/contrib/libreadline/tilde.h
new file mode 100644
index 0000000..6f0898c
--- /dev/null
+++ b/contrib/libreadline/tilde.h
@@ -0,0 +1,59 @@
+/* tilde.h: Externally available variables and function in libtilde.a. */
+
+/* Copyright (C) 1992 Free Software Foundation, Inc.
+
+ This file contains the Readline Library (the Library), a set of
+ routines for providing Emacs style line input to programs that ask
+ for it.
+
+ The Library is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 1, or (at your option)
+ any later version.
+
+ The Library is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ General Public License for more details.
+
+ The GNU General Public License is often shipped with GNU software, and
+ is generally kept in a file called COPYING or LICENSE. If you do not
+ have a copy of the license, write to the Free Software Foundation,
+ 675 Mass Ave, Cambridge, MA 02139, USA. */
+
+#if !defined (_TILDE_H_)
+# define _TILDE_H_
+
+/* Function pointers can be declared as (Function *)foo. */
+#if !defined (_FUNCTION_DEF)
+# define _FUNCTION_DEF
+typedef int Function ();
+typedef void VFunction ();
+typedef char *CPFunction ();
+typedef char **CPPFunction ();
+#endif /* _FUNCTION_DEF */
+
+/* If non-null, this contains the address of a function to call if the
+ standard meaning for expanding a tilde fails. The function is called
+ with the text (sans tilde, as in "foo"), and returns a malloc()'ed string
+ which is the expansion, or a NULL pointer if there is no expansion. */
+extern CPFunction *tilde_expansion_failure_hook;
+
+/* When non-null, this is a NULL terminated array of strings which
+ are duplicates for a tilde prefix. Bash uses this to expand
+ `=~' and `:~'. */
+extern char **tilde_additional_prefixes;
+
+/* When non-null, this is a NULL terminated array of strings which match
+ the end of a username, instead of just "/". Bash sets this to
+ `:' and `=~'. */
+extern char **tilde_additional_suffixes;
+
+/* Return a new string which is the result of tilde expanding STRING. */
+extern char *tilde_expand ();
+
+/* Do the work of tilde expansion on FILENAME. FILENAME starts with a
+ tilde. If there is no expansion, call tilde_expansion_failure_hook. */
+extern char *tilde_expand_word ();
+
+#endif /* _TILDE_H_ */
diff --git a/contrib/libreadline/undo.c b/contrib/libreadline/undo.c
new file mode 100644
index 0000000..af7ccc3
--- /dev/null
+++ b/contrib/libreadline/undo.c
@@ -0,0 +1,261 @@
+/* readline.c -- a general facility for reading lines of input
+ with emacs style editing and completion. */
+
+/* Copyright (C) 1987, 1989, 1992 Free Software Foundation, Inc.
+
+ This file is part of the GNU Readline Library, a library for
+ reading lines of text with interactive input and history editing.
+
+ The GNU Readline Library is free software; you can redistribute it
+ and/or modify it under the terms of the GNU General Public License
+ as published by the Free Software Foundation; either version 1, or
+ (at your option) any later version.
+
+ The GNU Readline Library is distributed in the hope that it will be
+ useful, but WITHOUT ANY WARRANTY; without even the implied warranty
+ of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ The GNU General Public License is often shipped with GNU software, and
+ is generally kept in a file called COPYING or LICENSE. If you do not
+ have a copy of the license, write to the Free Software Foundation,
+ 675 Mass Ave, Cambridge, MA 02139, USA. */
+#define READLINE_LIBRARY
+
+#if defined (HAVE_CONFIG_H)
+# include <config.h>
+#endif
+
+#include <sys/types.h>
+
+#if defined (HAVE_UNISTD_H)
+# include <unistd.h> /* for _POSIX_VERSION */
+#endif /* HAVE_UNISTD_H */
+
+#if defined (HAVE_STDLIB_H)
+# include <stdlib.h>
+#else
+# include "ansi_stdlib.h"
+#endif /* HAVE_STDLIB_H */
+
+#include <setjmp.h>
+#include <stdio.h>
+
+/* System-specific feature definitions and include files. */
+#include "rldefs.h"
+
+/* Some standard library routines. */
+#include "readline.h"
+#include "history.h"
+
+#define SWAP(s, e) do { int t; t = s; s = e; e = t; } while (0)
+
+/* Non-zero tells rl_delete_text and rl_insert_text to not add to
+ the undo list. */
+int _rl_doing_an_undo = 0;
+
+/* How many unclosed undo groups we currently have. */
+int _rl_undo_group_level = 0;
+
+/* The current undo list for THE_LINE. */
+UNDO_LIST *rl_undo_list = (UNDO_LIST *)NULL;
+
+/* **************************************************************** */
+/* */
+/* Undo, and Undoing */
+/* */
+/* **************************************************************** */
+
+/* Remember how to undo something. Concatenate some undos if that
+ seems right. */
+void
+rl_add_undo (what, start, end, text)
+ enum undo_code what;
+ int start, end;
+ char *text;
+{
+ UNDO_LIST *temp = (UNDO_LIST *)xmalloc (sizeof (UNDO_LIST));
+ temp->what = what;
+ temp->start = start;
+ temp->end = end;
+ temp->text = text;
+ temp->next = rl_undo_list;
+ rl_undo_list = temp;
+}
+
+/* Free the existing undo list. */
+void
+free_undo_list ()
+{
+ while (rl_undo_list)
+ {
+ UNDO_LIST *release = rl_undo_list;
+ rl_undo_list = rl_undo_list->next;
+
+ if (release->what == UNDO_DELETE)
+ free (release->text);
+
+ free (release);
+ }
+ rl_undo_list = (UNDO_LIST *)NULL;
+}
+
+/* Undo the next thing in the list. Return 0 if there
+ is nothing to undo, or non-zero if there was. */
+int
+rl_do_undo ()
+{
+ UNDO_LIST *release;
+ int waiting_for_begin = 0;
+ int start, end;
+
+#define TRANS(i) ((i) == -1 ? rl_point : ((i) == -2 ? rl_end : (i)))
+
+ do
+ {
+ if (!rl_undo_list)
+ return (0);
+
+ _rl_doing_an_undo = 1;
+
+ /* To better support vi-mode, a start or end value of -1 means
+ rl_point, and a value of -2 means rl_end. */
+ if (rl_undo_list->what == UNDO_DELETE || rl_undo_list->what == UNDO_INSERT)
+ {
+ start = TRANS (rl_undo_list->start);
+ end = TRANS (rl_undo_list->end);
+ }
+
+ switch (rl_undo_list->what)
+ {
+ /* Undoing deletes means inserting some text. */
+ case UNDO_DELETE:
+ rl_point = start;
+ rl_insert_text (rl_undo_list->text);
+ free (rl_undo_list->text);
+ break;
+
+ /* Undoing inserts means deleting some text. */
+ case UNDO_INSERT:
+ rl_delete_text (start, end);
+ rl_point = start;
+ break;
+
+ /* Undoing an END means undoing everything 'til we get to a BEGIN. */
+ case UNDO_END:
+ waiting_for_begin++;
+ break;
+
+ /* Undoing a BEGIN means that we are done with this group. */
+ case UNDO_BEGIN:
+ if (waiting_for_begin)
+ waiting_for_begin--;
+ else
+ ding ();
+ break;
+ }
+
+ _rl_doing_an_undo = 0;
+
+ release = rl_undo_list;
+ rl_undo_list = rl_undo_list->next;
+ free (release);
+ }
+ while (waiting_for_begin);
+
+ return (1);
+}
+#undef TRANS
+
+int
+_rl_fix_last_undo_of_type (type, start, end)
+ int type, start, end;
+{
+ UNDO_LIST *rl;
+
+ for (rl = rl_undo_list; rl; rl = rl->next)
+ {
+ if (rl->what == type)
+ {
+ rl->start = start;
+ rl->end = end;
+ return 0;
+ }
+ }
+ return 1;
+}
+
+/* Begin a group. Subsequent undos are undone as an atomic operation. */
+int
+rl_begin_undo_group ()
+{
+ rl_add_undo (UNDO_BEGIN, 0, 0, 0);
+ _rl_undo_group_level++;
+ return 0;
+}
+
+/* End an undo group started with rl_begin_undo_group (). */
+int
+rl_end_undo_group ()
+{
+ rl_add_undo (UNDO_END, 0, 0, 0);
+ _rl_undo_group_level--;
+ return 0;
+}
+
+/* Save an undo entry for the text from START to END. */
+int
+rl_modifying (start, end)
+ int start, end;
+{
+ if (start > end)
+ {
+ SWAP (start, end);
+ }
+
+ if (start != end)
+ {
+ char *temp = rl_copy_text (start, end);
+ rl_begin_undo_group ();
+ rl_add_undo (UNDO_DELETE, start, end, temp);
+ rl_add_undo (UNDO_INSERT, start, end, (char *)NULL);
+ rl_end_undo_group ();
+ }
+ return 0;
+}
+
+/* Revert the current line to its previous state. */
+int
+rl_revert_line (count, key)
+ int count, key;
+{
+ if (!rl_undo_list)
+ ding ();
+ else
+ {
+ while (rl_undo_list)
+ rl_do_undo ();
+ }
+ return 0;
+}
+
+/* Do some undoing of things that were done. */
+int
+rl_undo_command (count, key)
+ int count, key;
+{
+ if (count < 0)
+ return 0; /* Nothing to do. */
+
+ while (count)
+ {
+ if (rl_do_undo ())
+ count--;
+ else
+ {
+ ding ();
+ break;
+ }
+ }
+ return 0;
+}
diff --git a/contrib/libreadline/util.c b/contrib/libreadline/util.c
new file mode 100644
index 0000000..f63293a
--- /dev/null
+++ b/contrib/libreadline/util.c
@@ -0,0 +1,315 @@
+/* util.c -- readline utility functions */
+
+/* Copyright (C) 1987, 1989, 1992 Free Software Foundation, Inc.
+
+ This file is part of the GNU Readline Library, a library for
+ reading lines of text with interactive input and history editing.
+
+ The GNU Readline Library is free software; you can redistribute it
+ and/or modify it under the terms of the GNU General Public License
+ as published by the Free Software Foundation; either version 1, or
+ (at your option) any later version.
+
+ The GNU Readline Library is distributed in the hope that it will be
+ useful, but WITHOUT ANY WARRANTY; without even the implied warranty
+ of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ The GNU General Public License is often shipped with GNU software, and
+ is generally kept in a file called COPYING or LICENSE. If you do not
+ have a copy of the license, write to the Free Software Foundation,
+ 675 Mass Ave, Cambridge, MA 02139, USA. */
+#define READLINE_LIBRARY
+
+#if defined (HAVE_CONFIG_H)
+# include <config.h>
+#endif
+
+#include <stdio.h>
+#include <sys/types.h>
+#include <fcntl.h>
+#include <setjmp.h>
+#include <ctype.h>
+
+#if defined (HAVE_UNISTD_H)
+# include <unistd.h> /* for _POSIX_VERSION */
+#endif /* HAVE_UNISTD_H */
+
+#if defined (HAVE_STDLIB_H)
+# include <stdlib.h>
+#else
+# include "ansi_stdlib.h"
+#endif /* HAVE_STDLIB_H */
+
+/* System-specific feature definitions and include files. */
+#include "rldefs.h"
+
+#if defined (TIOCSTAT_IN_SYS_IOCTL)
+# include <sys/ioctl.h>
+#endif /* TIOCSTAT_IN_SYS_IOCTL */
+
+/* Some standard library routines. */
+#include "readline.h"
+
+#define SWAP(s, e) do { int t; t = s; s = e; e = t; } while (0)
+
+/* Pseudo-globals imported from readline.c */
+extern int readline_echoing_p;
+extern jmp_buf readline_top_level;
+extern int rl_line_buffer_len;
+extern Function *rl_last_func;
+
+extern int _rl_defining_kbd_macro;
+extern char *_rl_executing_macro;
+
+/* Pseudo-global functions imported from other library files. */
+extern void _rl_pop_executing_macro ();
+extern void _rl_set_the_line ();
+extern void _rl_init_argument ();
+
+extern char *xmalloc (), *xrealloc ();
+
+/* **************************************************************** */
+/* */
+/* Utility Functions */
+/* */
+/* **************************************************************** */
+
+/* Return 0 if C is not a member of the class of characters that belong
+ in words, or 1 if it is. */
+
+int _rl_allow_pathname_alphabetic_chars = 0;
+static char *pathname_alphabetic_chars = "/-_=~.#$";
+
+int
+alphabetic (c)
+ int c;
+{
+ if (ALPHABETIC (c))
+ return (1);
+
+ return (_rl_allow_pathname_alphabetic_chars &&
+ strchr (pathname_alphabetic_chars, c) != NULL);
+}
+
+/* How to abort things. */
+int
+_rl_abort_internal ()
+{
+ ding ();
+ rl_clear_message ();
+ _rl_init_argument ();
+ rl_pending_input = 0;
+
+ _rl_defining_kbd_macro = 0;
+ while (_rl_executing_macro)
+ _rl_pop_executing_macro ();
+
+ rl_last_func = (Function *)NULL;
+ longjmp (readline_top_level, 1);
+ return (0);
+}
+
+int
+rl_abort (count, key)
+ int count, key;
+{
+ return (_rl_abort_internal ());
+}
+
+int
+rl_tty_status (count, key)
+ int count, key;
+{
+#if defined (TIOCSTAT)
+ ioctl (1, TIOCSTAT, (char *)0);
+ rl_refresh_line ();
+#else
+ ding ();
+#endif
+ return 0;
+}
+
+/* Return a copy of the string between FROM and TO.
+ FROM is inclusive, TO is not. */
+char *
+rl_copy_text (from, to)
+ int from, to;
+{
+ register int length;
+ char *copy;
+
+ /* Fix it if the caller is confused. */
+ if (from > to)
+ SWAP (from, to);
+
+ length = to - from;
+ copy = xmalloc (1 + length);
+ strncpy (copy, rl_line_buffer + from, length);
+ copy[length] = '\0';
+ return (copy);
+}
+
+/* Increase the size of RL_LINE_BUFFER until it has enough space to hold
+ LEN characters. */
+void
+rl_extend_line_buffer (len)
+ int len;
+{
+ while (len >= rl_line_buffer_len)
+ {
+ rl_line_buffer_len += DEFAULT_BUFFER_SIZE;
+ rl_line_buffer = xrealloc (rl_line_buffer, rl_line_buffer_len);
+ }
+
+ _rl_set_the_line ();
+}
+
+/* **************************************************************** */
+/* */
+/* String Utility Functions */
+/* */
+/* **************************************************************** */
+
+/* Determine if s2 occurs in s1. If so, return a pointer to the
+ match in s1. The compare is case insensitive. */
+char *
+_rl_strindex (s1, s2)
+ register char *s1, *s2;
+{
+ register int i, l, len;
+
+ for (i = 0, l = strlen (s2), len = strlen (s1); (len - i) >= l; i++)
+ if (_rl_strnicmp (s1 + i, s2, l) == 0)
+ return (s1 + i);
+ return ((char *)NULL);
+}
+
+#if !defined (HAVE_STRCASECMP)
+/* Compare at most COUNT characters from string1 to string2. Case
+ doesn't matter. */
+int
+_rl_strnicmp (string1, string2, count)
+ char *string1, *string2;
+ int count;
+{
+ register char ch1, ch2;
+
+ while (count)
+ {
+ ch1 = *string1++;
+ ch2 = *string2++;
+ if (_rl_to_upper(ch1) == _rl_to_upper(ch2))
+ count--;
+ else
+ break;
+ }
+ return (count);
+}
+
+/* strcmp (), but caseless. */
+int
+_rl_stricmp (string1, string2)
+ char *string1, *string2;
+{
+ register char ch1, ch2;
+
+ while (*string1 && *string2)
+ {
+ ch1 = *string1++;
+ ch2 = *string2++;
+ if (_rl_to_upper(ch1) != _rl_to_upper(ch2))
+ return (1);
+ }
+ return (*string1 - *string2);
+}
+#endif /* !HAVE_STRCASECMP */
+
+/* Stupid comparison routine for qsort () ing strings. */
+int
+_rl_qsort_string_compare (s1, s2)
+ char **s1, **s2;
+{
+#if defined (HAVE_STRCOLL)
+ return (strcoll (*s1, *s2));
+#else
+ int result;
+
+ result = **s1 - **s2;
+ if (result == 0)
+ result = strcmp (*s1, *s2);
+
+ return result;
+#endif
+}
+
+#if !defined (SHELL)
+#ifdef savestring
+#undef savestring
+#endif
+/* Backwards compatibility, now that savestring has been removed from
+ all `public' readline header files. */
+char *
+savestring (s)
+ char *s;
+{
+ return ((char *)strcpy (xmalloc (1 + (int)strlen (s)), (s)));
+}
+#endif /* !SHELL */
+
+/* Function equivalents for the macros defined in chartypes.h. */
+#undef _rl_uppercase_p
+int
+_rl_uppercase_p (c)
+ int c;
+{
+ return (isupper (c));
+}
+
+#undef _rl_lowercase_p
+int
+_rl_lowercase_p (c)
+ int c;
+{
+ return (islower (c));
+}
+
+#undef _rl_pure_alphabetic
+int
+_rl_pure_alphabetic (c)
+ int c;
+{
+ return (isupper (c) || islower (c));
+}
+
+#undef _rl_digit_p
+int
+_rl_digit_p (c)
+ int c;
+{
+ return (isdigit (c));
+}
+
+#undef _rl_to_lower
+int
+_rl_to_lower (c)
+ int c;
+{
+ return (isupper (c) ? tolower (c) : c);
+}
+
+#undef _rl_to_upper
+int
+_rl_to_upper (c)
+ int c;
+{
+ return (islower (c) ? toupper (c) : c);
+}
+
+#undef _rl_digit_value
+int
+_rl_digit_value (c)
+ int c;
+{
+ return (isdigit (c) ? c - '0' : c);
+}
diff --git a/contrib/libreadline/vi_keymap.c b/contrib/libreadline/vi_keymap.c
new file mode 100644
index 0000000..14929a3
--- /dev/null
+++ b/contrib/libreadline/vi_keymap.c
@@ -0,0 +1,877 @@
+/* vi_keymap.c -- the keymap for vi_mode in readline (). */
+
+/* Copyright (C) 1987, 1989, 1992 Free Software Foundation, Inc.
+
+ This file is part of the GNU Readline Library, a library for
+ reading lines of text with interactive input and history editing.
+
+ The GNU Readline Library is free software; you can redistribute it
+ and/or modify it under the terms of the GNU General Public License
+ as published by the Free Software Foundation; either version 1, or
+ (at your option) any later version.
+
+ The GNU Readline Library is distributed in the hope that it will be
+ useful, but WITHOUT ANY WARRANTY; without even the implied warranty
+ of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ The GNU General Public License is often shipped with GNU software, and
+ is generally kept in a file called COPYING or LICENSE. If you do not
+ have a copy of the license, write to the Free Software Foundation,
+ 675 Mass Ave, Cambridge, MA 02139, USA. */
+
+#if !defined (BUFSIZ)
+#include <stdio.h>
+#endif /* !BUFSIZ */
+
+#include "readline.h"
+
+#if 0
+extern KEYMAP_ENTRY_ARRAY vi_escape_keymap;
+#endif
+
+/* The keymap arrays for handling vi mode. */
+KEYMAP_ENTRY_ARRAY vi_movement_keymap = {
+ /* The regular control keys come first. */
+ { ISFUNC, (Function *)0x0 }, /* Control-@ */
+ { ISFUNC, (Function *)0x0 }, /* Control-a */
+ { ISFUNC, (Function *)0x0 }, /* Control-b */
+ { ISFUNC, (Function *)0x0 }, /* Control-c */
+ { ISFUNC, rl_vi_eof_maybe }, /* Control-d */
+ { ISFUNC, rl_emacs_editing_mode }, /* Control-e */
+ { ISFUNC, (Function *)0x0 }, /* Control-f */
+ { ISFUNC, rl_abort }, /* Control-g */
+ { ISFUNC, rl_backward }, /* Control-h */
+ { ISFUNC, (Function *)0x0 }, /* Control-i */
+ { ISFUNC, rl_newline }, /* Control-j */
+ { ISFUNC, rl_kill_line }, /* Control-k */
+ { ISFUNC, rl_clear_screen }, /* Control-l */
+ { ISFUNC, rl_newline }, /* Control-m */
+ { ISFUNC, rl_get_next_history }, /* Control-n */
+ { ISFUNC, (Function *)0x0 }, /* Control-o */
+ { ISFUNC, rl_get_previous_history }, /* Control-p */
+ { ISFUNC, rl_quoted_insert }, /* Control-q */
+ { ISFUNC, rl_reverse_search_history }, /* Control-r */
+ { ISFUNC, rl_forward_search_history }, /* Control-s */
+ { ISFUNC, rl_transpose_chars }, /* Control-t */
+ { ISFUNC, rl_unix_line_discard }, /* Control-u */
+ { ISFUNC, rl_quoted_insert }, /* Control-v */
+ { ISFUNC, rl_unix_word_rubout }, /* Control-w */
+ { ISFUNC, (Function *)0x0 }, /* Control-x */
+ { ISFUNC, rl_yank }, /* Control-y */
+ { ISFUNC, (Function *)0x0 }, /* Control-z */
+
+ { ISFUNC, (Function *)0x0 }, /* Control-[ */ /* vi_escape_keymap */
+ { ISFUNC, (Function *)0x0 }, /* Control-\ */
+ { ISFUNC, (Function *)0x0 }, /* Control-] */
+ { ISFUNC, (Function *)0x0 }, /* Control-^ */
+ { ISFUNC, rl_vi_undo }, /* Control-_ */
+
+ /* The start of printing characters. */
+ { ISFUNC, rl_forward }, /* SPACE */
+ { ISFUNC, (Function *)0x0 }, /* ! */
+ { ISFUNC, (Function *)0x0 }, /* " */
+ { ISFUNC, rl_insert_comment }, /* # */
+ { ISFUNC, rl_end_of_line }, /* $ */
+ { ISFUNC, rl_vi_match }, /* % */
+ { ISFUNC, rl_vi_tilde_expand }, /* & */
+ { ISFUNC, (Function *)0x0 }, /* ' */
+ { ISFUNC, (Function *)0x0 }, /* ( */
+ { ISFUNC, (Function *)0x0 }, /* ) */
+ { ISFUNC, rl_vi_complete }, /* * */
+ { ISFUNC, rl_get_next_history}, /* + */
+ { ISFUNC, rl_vi_char_search }, /* , */
+ { ISFUNC, rl_get_previous_history }, /* - */
+ { ISFUNC, rl_vi_redo }, /* . */
+ { ISFUNC, rl_vi_search }, /* / */
+
+ /* Regular digits. */
+ { ISFUNC, rl_beg_of_line }, /* 0 */
+ { ISFUNC, rl_vi_arg_digit }, /* 1 */
+ { ISFUNC, rl_vi_arg_digit }, /* 2 */
+ { ISFUNC, rl_vi_arg_digit }, /* 3 */
+ { ISFUNC, rl_vi_arg_digit }, /* 4 */
+ { ISFUNC, rl_vi_arg_digit }, /* 5 */
+ { ISFUNC, rl_vi_arg_digit }, /* 6 */
+ { ISFUNC, rl_vi_arg_digit }, /* 7 */
+ { ISFUNC, rl_vi_arg_digit }, /* 8 */
+ { ISFUNC, rl_vi_arg_digit }, /* 9 */
+
+ /* A little more punctuation. */
+ { ISFUNC, (Function *)0x0 }, /* : */
+ { ISFUNC, rl_vi_char_search }, /* ; */
+ { ISFUNC, (Function *)0x0 }, /* < */
+ { ISFUNC, rl_vi_complete }, /* = */
+ { ISFUNC, (Function *)0x0 }, /* > */
+ { ISFUNC, rl_vi_search }, /* ? */
+ { ISFUNC, (Function *)0x0 }, /* @ */
+
+ /* Uppercase alphabet. */
+ { ISFUNC, rl_vi_append_eol }, /* A */
+ { ISFUNC, rl_vi_prev_word}, /* B */
+ { ISFUNC, rl_vi_change_to }, /* C */
+ { ISFUNC, rl_vi_delete_to }, /* D */
+ { ISFUNC, rl_vi_end_word }, /* E */
+ { ISFUNC, rl_vi_char_search }, /* F */
+ { ISFUNC, rl_vi_fetch_history }, /* G */
+ { ISFUNC, (Function *)0x0 }, /* H */
+ { ISFUNC, rl_vi_insert_beg }, /* I */
+ { ISFUNC, (Function *)0x0 }, /* J */
+ { ISFUNC, (Function *)0x0 }, /* K */
+ { ISFUNC, (Function *)0x0 }, /* L */
+ { ISFUNC, (Function *)0x0 }, /* M */
+ { ISFUNC, rl_vi_search_again }, /* N */
+ { ISFUNC, (Function *)0x0 }, /* O */
+ { ISFUNC, rl_vi_put }, /* P */
+ { ISFUNC, (Function *)0x0 }, /* Q */
+ { ISFUNC, rl_vi_replace }, /* R */
+ { ISFUNC, rl_vi_subst }, /* S */
+ { ISFUNC, rl_vi_char_search }, /* T */
+ { ISFUNC, rl_revert_line }, /* U */
+ { ISFUNC, (Function *)0x0 }, /* V */
+ { ISFUNC, rl_vi_next_word }, /* W */
+ { ISFUNC, rl_rubout }, /* X */
+ { ISFUNC, rl_vi_yank_to }, /* Y */
+ { ISFUNC, (Function *)0x0 }, /* Z */
+
+ /* Some more punctuation. */
+ { ISFUNC, (Function *)0x0 }, /* [ */
+ { ISFUNC, rl_vi_complete }, /* \ */
+ { ISFUNC, (Function *)0x0 }, /* ] */
+ { ISFUNC, rl_vi_first_print }, /* ^ */
+ { ISFUNC, rl_vi_yank_arg }, /* _ */
+ { ISFUNC, rl_vi_goto_mark }, /* ` */
+
+ /* Lowercase alphabet. */
+ { ISFUNC, rl_vi_append_mode }, /* a */
+ { ISFUNC, rl_vi_prev_word }, /* b */
+ { ISFUNC, rl_vi_change_to }, /* c */
+ { ISFUNC, rl_vi_delete_to }, /* d */
+ { ISFUNC, rl_vi_end_word }, /* e */
+ { ISFUNC, rl_vi_char_search }, /* f */
+ { ISFUNC, (Function *)0x0 }, /* g */
+ { ISFUNC, rl_backward }, /* h */
+ { ISFUNC, rl_vi_insertion_mode }, /* i */
+ { ISFUNC, rl_get_next_history }, /* j */
+ { ISFUNC, rl_get_previous_history }, /* k */
+ { ISFUNC, rl_forward }, /* l */
+ { ISFUNC, rl_vi_set_mark }, /* m */
+ { ISFUNC, rl_vi_search_again }, /* n */
+ { ISFUNC, (Function *)0x0 }, /* o */
+ { ISFUNC, rl_vi_put }, /* p */
+ { ISFUNC, (Function *)0x0 }, /* q */
+ { ISFUNC, rl_vi_change_char }, /* r */
+ { ISFUNC, rl_vi_subst }, /* s */
+ { ISFUNC, rl_vi_char_search }, /* t */
+ { ISFUNC, rl_vi_undo }, /* u */
+ { ISFUNC, (Function *)0x0 }, /* v */
+ { ISFUNC, rl_vi_next_word }, /* w */
+ { ISFUNC, rl_vi_delete }, /* x */
+ { ISFUNC, rl_vi_yank_to }, /* y */
+ { ISFUNC, (Function *)0x0 }, /* z */
+
+ /* Final punctuation. */
+ { ISFUNC, (Function *)0x0 }, /* { */
+ { ISFUNC, rl_vi_column }, /* | */
+ { ISFUNC, (Function *)0x0 }, /* } */
+ { ISFUNC, rl_vi_change_case }, /* ~ */
+ { ISFUNC, (Function *)0x0 }, /* RUBOUT */
+
+#if KEYMAP_SIZE > 128
+ /* Undefined keys. */
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 }
+#endif /* KEYMAP_SIZE > 128 */
+};
+
+
+KEYMAP_ENTRY_ARRAY vi_insertion_keymap = {
+ /* The regular control keys come first. */
+ { ISFUNC, (Function *)0x0 }, /* Control-@ */
+ { ISFUNC, rl_insert }, /* Control-a */
+ { ISFUNC, rl_insert }, /* Control-b */
+ { ISFUNC, rl_insert }, /* Control-c */
+ { ISFUNC, rl_vi_eof_maybe }, /* Control-d */
+ { ISFUNC, rl_insert }, /* Control-e */
+ { ISFUNC, rl_insert }, /* Control-f */
+ { ISFUNC, rl_insert }, /* Control-g */
+ { ISFUNC, rl_rubout }, /* Control-h */
+ { ISFUNC, rl_complete }, /* Control-i */
+ { ISFUNC, rl_newline }, /* Control-j */
+ { ISFUNC, rl_insert }, /* Control-k */
+ { ISFUNC, rl_insert }, /* Control-l */
+ { ISFUNC, rl_newline }, /* Control-m */
+ { ISFUNC, rl_insert }, /* Control-n */
+ { ISFUNC, rl_insert }, /* Control-o */
+ { ISFUNC, rl_insert }, /* Control-p */
+ { ISFUNC, rl_insert }, /* Control-q */
+ { ISFUNC, rl_reverse_search_history }, /* Control-r */
+ { ISFUNC, rl_forward_search_history }, /* Control-s */
+ { ISFUNC, rl_transpose_chars }, /* Control-t */
+ { ISFUNC, rl_unix_line_discard }, /* Control-u */
+ { ISFUNC, rl_quoted_insert }, /* Control-v */
+ { ISFUNC, rl_unix_word_rubout }, /* Control-w */
+ { ISFUNC, rl_insert }, /* Control-x */
+ { ISFUNC, rl_yank }, /* Control-y */
+ { ISFUNC, rl_insert }, /* Control-z */
+
+ { ISFUNC, rl_vi_movement_mode }, /* Control-[ */
+ { ISFUNC, rl_insert }, /* Control-\ */
+ { ISFUNC, rl_insert }, /* Control-] */
+ { ISFUNC, rl_insert }, /* Control-^ */
+ { ISFUNC, rl_vi_undo }, /* Control-_ */
+
+ /* The start of printing characters. */
+ { ISFUNC, rl_insert }, /* SPACE */
+ { ISFUNC, rl_insert }, /* ! */
+ { ISFUNC, rl_insert }, /* " */
+ { ISFUNC, rl_insert }, /* # */
+ { ISFUNC, rl_insert }, /* $ */
+ { ISFUNC, rl_insert }, /* % */
+ { ISFUNC, rl_insert }, /* & */
+ { ISFUNC, rl_insert }, /* ' */
+ { ISFUNC, rl_insert }, /* ( */
+ { ISFUNC, rl_insert }, /* ) */
+ { ISFUNC, rl_insert }, /* * */
+ { ISFUNC, rl_insert }, /* + */
+ { ISFUNC, rl_insert }, /* , */
+ { ISFUNC, rl_insert }, /* - */
+ { ISFUNC, rl_insert }, /* . */
+ { ISFUNC, rl_insert }, /* / */
+
+ /* Regular digits. */
+ { ISFUNC, rl_insert }, /* 0 */
+ { ISFUNC, rl_insert }, /* 1 */
+ { ISFUNC, rl_insert }, /* 2 */
+ { ISFUNC, rl_insert }, /* 3 */
+ { ISFUNC, rl_insert }, /* 4 */
+ { ISFUNC, rl_insert }, /* 5 */
+ { ISFUNC, rl_insert }, /* 6 */
+ { ISFUNC, rl_insert }, /* 7 */
+ { ISFUNC, rl_insert }, /* 8 */
+ { ISFUNC, rl_insert }, /* 9 */
+
+ /* A little more punctuation. */
+ { ISFUNC, rl_insert }, /* : */
+ { ISFUNC, rl_insert }, /* ; */
+ { ISFUNC, rl_insert }, /* < */
+ { ISFUNC, rl_insert }, /* = */
+ { ISFUNC, rl_insert }, /* > */
+ { ISFUNC, rl_insert }, /* ? */
+ { ISFUNC, rl_insert }, /* @ */
+
+ /* Uppercase alphabet. */
+ { ISFUNC, rl_insert }, /* A */
+ { ISFUNC, rl_insert }, /* B */
+ { ISFUNC, rl_insert }, /* C */
+ { ISFUNC, rl_insert }, /* D */
+ { ISFUNC, rl_insert }, /* E */
+ { ISFUNC, rl_insert }, /* F */
+ { ISFUNC, rl_insert }, /* G */
+ { ISFUNC, rl_insert }, /* H */
+ { ISFUNC, rl_insert }, /* I */
+ { ISFUNC, rl_insert }, /* J */
+ { ISFUNC, rl_insert }, /* K */
+ { ISFUNC, rl_insert }, /* L */
+ { ISFUNC, rl_insert }, /* M */
+ { ISFUNC, rl_insert }, /* N */
+ { ISFUNC, rl_insert }, /* O */
+ { ISFUNC, rl_insert }, /* P */
+ { ISFUNC, rl_insert }, /* Q */
+ { ISFUNC, rl_insert }, /* R */
+ { ISFUNC, rl_insert }, /* S */
+ { ISFUNC, rl_insert }, /* T */
+ { ISFUNC, rl_insert }, /* U */
+ { ISFUNC, rl_insert }, /* V */
+ { ISFUNC, rl_insert }, /* W */
+ { ISFUNC, rl_insert }, /* X */
+ { ISFUNC, rl_insert }, /* Y */
+ { ISFUNC, rl_insert }, /* Z */
+
+ /* Some more punctuation. */
+ { ISFUNC, rl_insert }, /* [ */
+ { ISFUNC, rl_insert }, /* \ */
+ { ISFUNC, rl_insert }, /* ] */
+ { ISFUNC, rl_insert }, /* ^ */
+ { ISFUNC, rl_insert }, /* _ */
+ { ISFUNC, rl_insert }, /* ` */
+
+ /* Lowercase alphabet. */
+ { ISFUNC, rl_insert }, /* a */
+ { ISFUNC, rl_insert }, /* b */
+ { ISFUNC, rl_insert }, /* c */
+ { ISFUNC, rl_insert }, /* d */
+ { ISFUNC, rl_insert }, /* e */
+ { ISFUNC, rl_insert }, /* f */
+ { ISFUNC, rl_insert }, /* g */
+ { ISFUNC, rl_insert }, /* h */
+ { ISFUNC, rl_insert }, /* i */
+ { ISFUNC, rl_insert }, /* j */
+ { ISFUNC, rl_insert }, /* k */
+ { ISFUNC, rl_insert }, /* l */
+ { ISFUNC, rl_insert }, /* m */
+ { ISFUNC, rl_insert }, /* n */
+ { ISFUNC, rl_insert }, /* o */
+ { ISFUNC, rl_insert }, /* p */
+ { ISFUNC, rl_insert }, /* q */
+ { ISFUNC, rl_insert }, /* r */
+ { ISFUNC, rl_insert }, /* s */
+ { ISFUNC, rl_insert }, /* t */
+ { ISFUNC, rl_insert }, /* u */
+ { ISFUNC, rl_insert }, /* v */
+ { ISFUNC, rl_insert }, /* w */
+ { ISFUNC, rl_insert }, /* x */
+ { ISFUNC, rl_insert }, /* y */
+ { ISFUNC, rl_insert }, /* z */
+
+ /* Final punctuation. */
+ { ISFUNC, rl_insert }, /* { */
+ { ISFUNC, rl_insert }, /* | */
+ { ISFUNC, rl_insert }, /* } */
+ { ISFUNC, rl_insert }, /* ~ */
+ { ISFUNC, rl_rubout }, /* RUBOUT */
+
+#if KEYMAP_SIZE > 128
+ /* Pure 8-bit characters (128 - 159).
+ These might be used in some
+ character sets. */
+ { ISFUNC, rl_insert }, /* ? */
+ { ISFUNC, rl_insert }, /* ? */
+ { ISFUNC, rl_insert }, /* ? */
+ { ISFUNC, rl_insert }, /* ? */
+ { ISFUNC, rl_insert }, /* ? */
+ { ISFUNC, rl_insert }, /* ? */
+ { ISFUNC, rl_insert }, /* ? */
+ { ISFUNC, rl_insert }, /* ? */
+ { ISFUNC, rl_insert }, /* ? */
+ { ISFUNC, rl_insert }, /* ? */
+ { ISFUNC, rl_insert }, /* ? */
+ { ISFUNC, rl_insert }, /* ? */
+ { ISFUNC, rl_insert }, /* ? */
+ { ISFUNC, rl_insert }, /* ? */
+ { ISFUNC, rl_insert }, /* ? */
+ { ISFUNC, rl_insert }, /* ? */
+ { ISFUNC, rl_insert }, /* ? */
+ { ISFUNC, rl_insert }, /* ? */
+ { ISFUNC, rl_insert }, /* ? */
+ { ISFUNC, rl_insert }, /* ? */
+ { ISFUNC, rl_insert }, /* ? */
+ { ISFUNC, rl_insert }, /* ? */
+ { ISFUNC, rl_insert }, /* ? */
+ { ISFUNC, rl_insert }, /* ? */
+ { ISFUNC, rl_insert }, /* ? */
+ { ISFUNC, rl_insert }, /* ? */
+ { ISFUNC, rl_insert }, /* ? */
+ { ISFUNC, rl_insert }, /* ? */
+ { ISFUNC, rl_insert }, /* ? */
+ { ISFUNC, rl_insert }, /* ? */
+ { ISFUNC, rl_insert }, /* ? */
+ { ISFUNC, rl_insert }, /* ? */
+
+ /* ISO Latin-1 characters (160 - 255) */
+ { ISFUNC, rl_insert }, /* No-break space */
+ { ISFUNC, rl_insert }, /* Inverted exclamation mark */
+ { ISFUNC, rl_insert }, /* Cent sign */
+ { ISFUNC, rl_insert }, /* Pound sign */
+ { ISFUNC, rl_insert }, /* Currency sign */
+ { ISFUNC, rl_insert }, /* Yen sign */
+ { ISFUNC, rl_insert }, /* Broken bar */
+ { ISFUNC, rl_insert }, /* Section sign */
+ { ISFUNC, rl_insert }, /* Diaeresis */
+ { ISFUNC, rl_insert }, /* Copyright sign */
+ { ISFUNC, rl_insert }, /* Feminine ordinal indicator */
+ { ISFUNC, rl_insert }, /* Left pointing double angle quotation mark */
+ { ISFUNC, rl_insert }, /* Not sign */
+ { ISFUNC, rl_insert }, /* Soft hyphen */
+ { ISFUNC, rl_insert }, /* Registered sign */
+ { ISFUNC, rl_insert }, /* Macron */
+ { ISFUNC, rl_insert }, /* Degree sign */
+ { ISFUNC, rl_insert }, /* Plus-minus sign */
+ { ISFUNC, rl_insert }, /* Superscript two */
+ { ISFUNC, rl_insert }, /* Superscript three */
+ { ISFUNC, rl_insert }, /* Acute accent */
+ { ISFUNC, rl_insert }, /* Micro sign */
+ { ISFUNC, rl_insert }, /* Pilcrow sign */
+ { ISFUNC, rl_insert }, /* Middle dot */
+ { ISFUNC, rl_insert }, /* Cedilla */
+ { ISFUNC, rl_insert }, /* Superscript one */
+ { ISFUNC, rl_insert }, /* Masculine ordinal indicator */
+ { ISFUNC, rl_insert }, /* Right pointing double angle quotation mark */
+ { ISFUNC, rl_insert }, /* Vulgar fraction one quarter */
+ { ISFUNC, rl_insert }, /* Vulgar fraction one half */
+ { ISFUNC, rl_insert }, /* Vulgar fraction three quarters */
+ { ISFUNC, rl_insert }, /* Inverted questionk mark */
+ { ISFUNC, rl_insert }, /* Latin capital letter a with grave */
+ { ISFUNC, rl_insert }, /* Latin capital letter a with acute */
+ { ISFUNC, rl_insert }, /* Latin capital letter a with circumflex */
+ { ISFUNC, rl_insert }, /* Latin capital letter a with tilde */
+ { ISFUNC, rl_insert }, /* Latin capital letter a with diaeresis */
+ { ISFUNC, rl_insert }, /* Latin capital letter a with ring above */
+ { ISFUNC, rl_insert }, /* Latin capital letter ae */
+ { ISFUNC, rl_insert }, /* Latin capital letter c with cedilla */
+ { ISFUNC, rl_insert }, /* Latin capital letter e with grave */
+ { ISFUNC, rl_insert }, /* Latin capital letter e with acute */
+ { ISFUNC, rl_insert }, /* Latin capital letter e with circumflex */
+ { ISFUNC, rl_insert }, /* Latin capital letter e with diaeresis */
+ { ISFUNC, rl_insert }, /* Latin capital letter i with grave */
+ { ISFUNC, rl_insert }, /* Latin capital letter i with acute */
+ { ISFUNC, rl_insert }, /* Latin capital letter i with circumflex */
+ { ISFUNC, rl_insert }, /* Latin capital letter i with diaeresis */
+ { ISFUNC, rl_insert }, /* Latin capital letter eth (Icelandic) */
+ { ISFUNC, rl_insert }, /* Latin capital letter n with tilde */
+ { ISFUNC, rl_insert }, /* Latin capital letter o with grave */
+ { ISFUNC, rl_insert }, /* Latin capital letter o with acute */
+ { ISFUNC, rl_insert }, /* Latin capital letter o with circumflex */
+ { ISFUNC, rl_insert }, /* Latin capital letter o with tilde */
+ { ISFUNC, rl_insert }, /* Latin capital letter o with diaeresis */
+ { ISFUNC, rl_insert }, /* Multiplication sign */
+ { ISFUNC, rl_insert }, /* Latin capital letter o with stroke */
+ { ISFUNC, rl_insert }, /* Latin capital letter u with grave */
+ { ISFUNC, rl_insert }, /* Latin capital letter u with acute */
+ { ISFUNC, rl_insert }, /* Latin capital letter u with circumflex */
+ { ISFUNC, rl_insert }, /* Latin capital letter u with diaeresis */
+ { ISFUNC, rl_insert }, /* Latin capital letter Y with acute */
+ { ISFUNC, rl_insert }, /* Latin capital letter thorn (Icelandic) */
+ { ISFUNC, rl_insert }, /* Latin small letter sharp s (German) */
+ { ISFUNC, rl_insert }, /* Latin small letter a with grave */
+ { ISFUNC, rl_insert }, /* Latin small letter a with acute */
+ { ISFUNC, rl_insert }, /* Latin small letter a with circumflex */
+ { ISFUNC, rl_insert }, /* Latin small letter a with tilde */
+ { ISFUNC, rl_insert }, /* Latin small letter a with diaeresis */
+ { ISFUNC, rl_insert }, /* Latin small letter a with ring above */
+ { ISFUNC, rl_insert }, /* Latin small letter ae */
+ { ISFUNC, rl_insert }, /* Latin small letter c with cedilla */
+ { ISFUNC, rl_insert }, /* Latin small letter e with grave */
+ { ISFUNC, rl_insert }, /* Latin small letter e with acute */
+ { ISFUNC, rl_insert }, /* Latin small letter e with circumflex */
+ { ISFUNC, rl_insert }, /* Latin small letter e with diaeresis */
+ { ISFUNC, rl_insert }, /* Latin small letter i with grave */
+ { ISFUNC, rl_insert }, /* Latin small letter i with acute */
+ { ISFUNC, rl_insert }, /* Latin small letter i with circumflex */
+ { ISFUNC, rl_insert }, /* Latin small letter i with diaeresis */
+ { ISFUNC, rl_insert }, /* Latin small letter eth (Icelandic) */
+ { ISFUNC, rl_insert }, /* Latin small letter n with tilde */
+ { ISFUNC, rl_insert }, /* Latin small letter o with grave */
+ { ISFUNC, rl_insert }, /* Latin small letter o with acute */
+ { ISFUNC, rl_insert }, /* Latin small letter o with circumflex */
+ { ISFUNC, rl_insert }, /* Latin small letter o with tilde */
+ { ISFUNC, rl_insert }, /* Latin small letter o with diaeresis */
+ { ISFUNC, rl_insert }, /* Division sign */
+ { ISFUNC, rl_insert }, /* Latin small letter o with stroke */
+ { ISFUNC, rl_insert }, /* Latin small letter u with grave */
+ { ISFUNC, rl_insert }, /* Latin small letter u with acute */
+ { ISFUNC, rl_insert }, /* Latin small letter u with circumflex */
+ { ISFUNC, rl_insert }, /* Latin small letter u with diaeresis */
+ { ISFUNC, rl_insert }, /* Latin small letter y with acute */
+ { ISFUNC, rl_insert }, /* Latin small letter thorn (Icelandic) */
+ { ISFUNC, rl_insert } /* Latin small letter y with diaeresis */
+#endif /* KEYMAP_SIZE > 128 */
+};
+
+/* Unused for the time being. */
+#if 0
+KEYMAP_ENTRY_ARRAY vi_escape_keymap = {
+ /* The regular control keys come first. */
+ { ISFUNC, (Function *)0x0 }, /* Control-@ */
+ { ISFUNC, (Function *)0x0 }, /* Control-a */
+ { ISFUNC, (Function *)0x0 }, /* Control-b */
+ { ISFUNC, (Function *)0x0 }, /* Control-c */
+ { ISFUNC, (Function *)0x0 }, /* Control-d */
+ { ISFUNC, (Function *)0x0 }, /* Control-e */
+ { ISFUNC, (Function *)0x0 }, /* Control-f */
+ { ISFUNC, (Function *)0x0 }, /* Control-g */
+ { ISFUNC, (Function *)0x0 }, /* Control-h */
+ { ISFUNC, rl_tab_insert}, /* Control-i */
+ { ISFUNC, rl_emacs_editing_mode}, /* Control-j */
+ { ISFUNC, rl_kill_line }, /* Control-k */
+ { ISFUNC, (Function *)0x0 }, /* Control-l */
+ { ISFUNC, rl_emacs_editing_mode}, /* Control-m */
+ { ISFUNC, (Function *)0x0 }, /* Control-n */
+ { ISFUNC, (Function *)0x0 }, /* Control-o */
+ { ISFUNC, (Function *)0x0 }, /* Control-p */
+ { ISFUNC, (Function *)0x0 }, /* Control-q */
+ { ISFUNC, (Function *)0x0 }, /* Control-r */
+ { ISFUNC, (Function *)0x0 }, /* Control-s */
+ { ISFUNC, (Function *)0x0 }, /* Control-t */
+ { ISFUNC, (Function *)0x0 }, /* Control-u */
+ { ISFUNC, (Function *)0x0 }, /* Control-v */
+ { ISFUNC, (Function *)0x0 }, /* Control-w */
+ { ISFUNC, (Function *)0x0 }, /* Control-x */
+ { ISFUNC, (Function *)0x0 }, /* Control-y */
+ { ISFUNC, (Function *)0x0 }, /* Control-z */
+
+ { ISFUNC, rl_vi_movement_mode }, /* Control-[ */
+ { ISFUNC, (Function *)0x0 }, /* Control-\ */
+ { ISFUNC, (Function *)0x0 }, /* Control-] */
+ { ISFUNC, (Function *)0x0 }, /* Control-^ */
+ { ISFUNC, rl_vi_undo }, /* Control-_ */
+
+ /* The start of printing characters. */
+ { ISFUNC, (Function *)0x0 }, /* SPACE */
+ { ISFUNC, (Function *)0x0 }, /* ! */
+ { ISFUNC, (Function *)0x0 }, /* " */
+ { ISFUNC, (Function *)0x0 }, /* # */
+ { ISFUNC, (Function *)0x0 }, /* $ */
+ { ISFUNC, (Function *)0x0 }, /* % */
+ { ISFUNC, (Function *)0x0 }, /* & */
+ { ISFUNC, (Function *)0x0 }, /* ' */
+ { ISFUNC, (Function *)0x0 }, /* ( */
+ { ISFUNC, (Function *)0x0 }, /* ) */
+ { ISFUNC, (Function *)0x0 }, /* * */
+ { ISFUNC, (Function *)0x0 }, /* + */
+ { ISFUNC, (Function *)0x0 }, /* , */
+ { ISFUNC, (Function *)0x0 }, /* - */
+ { ISFUNC, (Function *)0x0 }, /* . */
+ { ISFUNC, (Function *)0x0 }, /* / */
+
+ /* Regular digits. */
+ { ISFUNC, rl_vi_arg_digit }, /* 0 */
+ { ISFUNC, rl_vi_arg_digit }, /* 1 */
+ { ISFUNC, rl_vi_arg_digit }, /* 2 */
+ { ISFUNC, rl_vi_arg_digit }, /* 3 */
+ { ISFUNC, rl_vi_arg_digit }, /* 4 */
+ { ISFUNC, rl_vi_arg_digit }, /* 5 */
+ { ISFUNC, rl_vi_arg_digit }, /* 6 */
+ { ISFUNC, rl_vi_arg_digit }, /* 7 */
+ { ISFUNC, rl_vi_arg_digit }, /* 8 */
+ { ISFUNC, rl_vi_arg_digit }, /* 9 */
+
+ /* A little more punctuation. */
+ { ISFUNC, (Function *)0x0 }, /* : */
+ { ISFUNC, (Function *)0x0 }, /* ; */
+ { ISFUNC, (Function *)0x0 }, /* < */
+ { ISFUNC, (Function *)0x0 }, /* = */
+ { ISFUNC, (Function *)0x0 }, /* > */
+ { ISFUNC, (Function *)0x0 }, /* ? */
+ { ISFUNC, (Function *)0x0 }, /* @ */
+
+ /* Uppercase alphabet. */
+ { ISFUNC, rl_do_lowercase_version }, /* A */
+ { ISFUNC, rl_do_lowercase_version }, /* B */
+ { ISFUNC, rl_do_lowercase_version }, /* C */
+ { ISFUNC, rl_do_lowercase_version }, /* D */
+ { ISFUNC, rl_do_lowercase_version }, /* E */
+ { ISFUNC, rl_do_lowercase_version }, /* F */
+ { ISFUNC, rl_do_lowercase_version }, /* G */
+ { ISFUNC, rl_do_lowercase_version }, /* H */
+ { ISFUNC, rl_do_lowercase_version }, /* I */
+ { ISFUNC, rl_do_lowercase_version }, /* J */
+ { ISFUNC, rl_do_lowercase_version }, /* K */
+ { ISFUNC, rl_do_lowercase_version }, /* L */
+ { ISFUNC, rl_do_lowercase_version }, /* M */
+ { ISFUNC, rl_do_lowercase_version }, /* N */
+ { ISFUNC, rl_do_lowercase_version }, /* O */
+ { ISFUNC, rl_do_lowercase_version }, /* P */
+ { ISFUNC, rl_do_lowercase_version }, /* Q */
+ { ISFUNC, rl_do_lowercase_version }, /* R */
+ { ISFUNC, rl_do_lowercase_version }, /* S */
+ { ISFUNC, rl_do_lowercase_version }, /* T */
+ { ISFUNC, rl_do_lowercase_version }, /* U */
+ { ISFUNC, rl_do_lowercase_version }, /* V */
+ { ISFUNC, rl_do_lowercase_version }, /* W */
+ { ISFUNC, rl_do_lowercase_version }, /* X */
+ { ISFUNC, rl_do_lowercase_version }, /* Y */
+ { ISFUNC, rl_do_lowercase_version }, /* Z */
+
+ /* Some more punctuation. */
+ { ISFUNC, rl_arrow_keys }, /* [ */
+ { ISFUNC, (Function *)0x0 }, /* \ */
+ { ISFUNC, (Function *)0x0 }, /* ] */
+ { ISFUNC, (Function *)0x0 }, /* ^ */
+ { ISFUNC, (Function *)0x0 }, /* _ */
+ { ISFUNC, (Function *)0x0 }, /* ` */
+
+ /* Lowercase alphabet. */
+ { ISFUNC, (Function *)0x0 }, /* a */
+ { ISFUNC, (Function *)0x0 }, /* b */
+ { ISFUNC, (Function *)0x0 }, /* c */
+ { ISFUNC, (Function *)0x0 }, /* d */
+ { ISFUNC, (Function *)0x0 }, /* e */
+ { ISFUNC, (Function *)0x0 }, /* f */
+ { ISFUNC, (Function *)0x0 }, /* g */
+ { ISFUNC, (Function *)0x0 }, /* h */
+ { ISFUNC, (Function *)0x0 }, /* i */
+ { ISFUNC, (Function *)0x0 }, /* j */
+ { ISFUNC, (Function *)0x0 }, /* k */
+ { ISFUNC, (Function *)0x0 }, /* l */
+ { ISFUNC, (Function *)0x0 }, /* m */
+ { ISFUNC, (Function *)0x0 }, /* n */
+ { ISFUNC, rl_arrow_keys }, /* o */
+ { ISFUNC, (Function *)0x0 }, /* p */
+ { ISFUNC, (Function *)0x0 }, /* q */
+ { ISFUNC, (Function *)0x0 }, /* r */
+ { ISFUNC, (Function *)0x0 }, /* s */
+ { ISFUNC, (Function *)0x0 }, /* t */
+ { ISFUNC, (Function *)0x0 }, /* u */
+ { ISFUNC, (Function *)0x0 }, /* v */
+ { ISFUNC, (Function *)0x0 }, /* w */
+ { ISFUNC, (Function *)0x0 }, /* x */
+ { ISFUNC, (Function *)0x0 }, /* y */
+ { ISFUNC, (Function *)0x0 }, /* z */
+
+ /* Final punctuation. */
+ { ISFUNC, (Function *)0x0 }, /* { */
+ { ISFUNC, (Function *)0x0 }, /* | */
+ { ISFUNC, (Function *)0x0 }, /* } */
+ { ISFUNC, (Function *)0x0 }, /* ~ */
+ { ISFUNC, rl_backward_kill_word }, /* RUBOUT */
+
+#if KEYMAP_SIZE > 128
+ /* Undefined keys. */
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 },
+ { ISFUNC, (Function *)0x0 }
+#endif /* KEYMAP_SIZE > 128 */
+};
+#endif
diff --git a/contrib/libreadline/vi_mode.c b/contrib/libreadline/vi_mode.c
new file mode 100644
index 0000000..c730296
--- /dev/null
+++ b/contrib/libreadline/vi_mode.c
@@ -0,0 +1,1378 @@
+/* vi_mode.c -- A vi emulation mode for Bash.
+ Derived from code written by Jeff Sparkes (jsparkes@bnr.ca). */
+
+/* Copyright (C) 1987, 1989, 1992 Free Software Foundation, Inc.
+
+ This file is part of the GNU Readline Library, a library for
+ reading lines of text with interactive input and history editing.
+
+ The GNU Readline Library is free software; you can redistribute it
+ and/or modify it under the terms of the GNU General Public License
+ as published by the Free Software Foundation; either version 1, or
+ (at your option) any later version.
+
+ The GNU Readline Library is distributed in the hope that it will be
+ useful, but WITHOUT ANY WARRANTY; without even the implied warranty
+ of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ The GNU General Public License is often shipped with GNU software, and
+ is generally kept in a file called COPYING or LICENSE. If you do not
+ have a copy of the license, write to the Free Software Foundation,
+ 675 Mass Ave, Cambridge, MA 02139, USA. */
+#define READLINE_LIBRARY
+
+/* **************************************************************** */
+/* */
+/* VI Emulation Mode */
+/* */
+/* **************************************************************** */
+#include "rlconf.h"
+
+#if defined (VI_MODE)
+
+#if defined (HAVE_CONFIG_H)
+# include <config.h>
+#endif
+
+#include <sys/types.h>
+
+#if defined (HAVE_STDLIB_H)
+# include <stdlib.h>
+#else
+# include "ansi_stdlib.h"
+#endif /* HAVE_STDLIB_H */
+
+#if defined (HAVE_UNISTD_H)
+# include <unistd.h>
+#endif
+
+#include <stdio.h>
+
+/* Some standard library routines. */
+#include "rldefs.h"
+#include "readline.h"
+#include "history.h"
+
+#ifndef _rl_digit_p
+#define _rl_digit_p(c) ((c) >= '0' && (c) <= '9')
+#endif
+
+#ifndef _rl_digit_value
+#define _rl_digit_value(c) ((c) - '0')
+#endif
+
+#ifndef member
+#define member(c, s) ((c) ? (char *)strchr ((s), (c)) != (char *)NULL : 0)
+#endif
+
+#ifndef isident
+#define isident(c) ((_rl_pure_alphabetic (c) || _rl_digit_p (c) || c == '_'))
+#endif
+
+#ifndef exchange
+#define exchange(x, y) do {int temp = x; x = y; y = temp;} while (0)
+#endif
+
+extern char *xmalloc (), *xrealloc ();
+
+/* Variables imported from readline.c */
+extern int rl_point, rl_end, rl_mark, rl_done;
+extern FILE *rl_instream;
+extern int rl_line_buffer_len, rl_explicit_arg, rl_numeric_arg;
+extern Keymap _rl_keymap;
+extern char *rl_prompt;
+extern char *rl_line_buffer;
+extern int rl_arg_sign;
+
+extern int _rl_doing_an_undo;
+extern int _rl_undo_group_level;
+
+extern void _rl_dispatch ();
+extern int _rl_char_search_internal ();
+
+extern void rl_extend_line_buffer ();
+extern int rl_vi_check ();
+
+/* Non-zero means enter insertion mode. */
+static int _rl_vi_doing_insert;
+
+/* Command keys which do movement for xxx_to commands. */
+static char *vi_motion = " hl^$0ftFt;,%wbeWBE|";
+
+/* Keymap used for vi replace characters. Created dynamically since
+ rarely used. */
+static Keymap vi_replace_map;
+
+/* The number of characters inserted in the last replace operation. */
+static int vi_replace_count;
+
+/* If non-zero, we have text inserted after a c[motion] command that put
+ us implicitly into insert mode. Some people want this text to be
+ attached to the command so that it is `redoable' with `.'. */
+static int vi_continued_command;
+static char *vi_insert_buffer;
+static int vi_insert_buffer_size;
+
+static int _rl_vi_last_command = 'i'; /* default `.' puts you in insert mode */
+static int _rl_vi_last_repeat = 1;
+static int _rl_vi_last_arg_sign = 1;
+static int _rl_vi_last_motion;
+static int _rl_vi_last_search_char;
+static int _rl_vi_last_replacement;
+
+static int _rl_vi_last_key_before_insert;
+
+static int vi_redoing;
+
+/* Text modification commands. These are the `redoable' commands. */
+static char *vi_textmod = "_*\\AaIiCcDdPpYyRrSsXx~";
+
+/* Arrays for the saved marks. */
+static int vi_mark_chars[27];
+
+static int rl_digit_loop1 ();
+
+void
+_rl_vi_initialize_line ()
+{
+ register int i;
+
+ for (i = 0; i < sizeof (vi_mark_chars) / sizeof (int); i++)
+ vi_mark_chars[i] = -1;
+}
+
+void
+_rl_vi_reset_last ()
+{
+ _rl_vi_last_command = 'i';
+ _rl_vi_last_repeat = 1;
+ _rl_vi_last_arg_sign = 1;
+ _rl_vi_last_motion = 0;
+}
+
+void
+_rl_vi_set_last (key, repeat, sign)
+ int key, repeat, sign;
+{
+ _rl_vi_last_command = key;
+ _rl_vi_last_repeat = repeat;
+ _rl_vi_last_arg_sign = sign;
+}
+
+/* Is the command C a VI mode text modification command? */
+int
+_rl_vi_textmod_command (c)
+ int c;
+{
+ return (member (c, vi_textmod));
+}
+
+static void
+_rl_vi_stuff_insert (count)
+ int count;
+{
+ rl_begin_undo_group ();
+ while (count--)
+ rl_insert_text (vi_insert_buffer);
+ rl_end_undo_group ();
+}
+
+/* Bound to `.'. Called from command mode, so we know that we have to
+ redo a text modification command. The default for _rl_vi_last_command
+ puts you back into insert mode. */
+int
+rl_vi_redo (count, c)
+ int count, c;
+{
+ if (!rl_explicit_arg)
+ {
+ rl_numeric_arg = _rl_vi_last_repeat;
+ rl_arg_sign = _rl_vi_last_arg_sign;
+ }
+
+ vi_redoing = 1;
+ /* If we're redoing an insert with `i', stuff in the inserted text
+ and do not go into insertion mode. */
+ if (_rl_vi_last_command == 'i' && vi_insert_buffer && *vi_insert_buffer)
+ {
+ _rl_vi_stuff_insert (count);
+ /* And back up point over the last character inserted. */
+ if (rl_point > 0)
+ rl_point--;
+ }
+ else
+ _rl_dispatch (_rl_vi_last_command, _rl_keymap);
+ vi_redoing = 0;
+
+ return (0);
+}
+
+/* A placeholder for further expansion. */
+int
+rl_vi_undo (count, key)
+ int count, key;
+{
+ return (rl_undo_command (count, key));
+}
+
+/* Yank the nth arg from the previous line into this line at point. */
+int
+rl_vi_yank_arg (count, key)
+ int count, key;
+{
+ /* Readline thinks that the first word on a line is the 0th, while vi
+ thinks the first word on a line is the 1st. Compensate. */
+ if (rl_explicit_arg)
+ rl_yank_nth_arg (count - 1, 0);
+ else
+ rl_yank_nth_arg ('$', 0);
+
+ return (0);
+}
+
+/* With an argument, move back that many history lines, else move to the
+ beginning of history. */
+int
+rl_vi_fetch_history (count, c)
+ int count, c;
+{
+ int wanted;
+
+ /* Giving an argument of n means we want the nth command in the history
+ file. The command number is interpreted the same way that the bash
+ `history' command does it -- that is, giving an argument count of 450
+ to this command would get the command listed as number 450 in the
+ output of `history'. */
+ if (rl_explicit_arg)
+ {
+ wanted = history_base + where_history () - count;
+ if (wanted <= 0)
+ rl_beginning_of_history (0, 0);
+ else
+ rl_get_previous_history (wanted, c);
+ }
+ else
+ rl_beginning_of_history (count, 0);
+ return (0);
+}
+
+/* Search again for the last thing searched for. */
+int
+rl_vi_search_again (count, key)
+ int count, key;
+{
+ switch (key)
+ {
+ case 'n':
+ rl_noninc_reverse_search_again (count, key);
+ break;
+
+ case 'N':
+ rl_noninc_forward_search_again (count, key);
+ break;
+ }
+ return (0);
+}
+
+/* Do a vi style search. */
+int
+rl_vi_search (count, key)
+ int count, key;
+{
+ switch (key)
+ {
+ case '?':
+ rl_noninc_forward_search (count, key);
+ break;
+
+ case '/':
+ rl_noninc_reverse_search (count, key);
+ break;
+
+ default:
+ ding ();
+ break;
+ }
+ return (0);
+}
+
+/* Completion, from vi's point of view. */
+int
+rl_vi_complete (ignore, key)
+ int ignore, key;
+{
+ if ((rl_point < rl_end) && (!whitespace (rl_line_buffer[rl_point])))
+ {
+ if (!whitespace (rl_line_buffer[rl_point + 1]))
+ rl_vi_end_word (1, 'E');
+ rl_point++;
+ }
+
+ if (key == '*')
+ rl_complete_internal ('*'); /* Expansion and replacement. */
+ else if (key == '=')
+ rl_complete_internal ('?'); /* List possible completions. */
+ else if (key == '\\')
+ rl_complete_internal (TAB); /* Standard Readline completion. */
+ else
+ rl_complete (0, key);
+
+ if (key == '*' || key == '\\')
+ {
+ _rl_vi_set_last (key, 1, rl_arg_sign);
+ rl_vi_insertion_mode (1, key);
+ }
+ return (0);
+}
+
+/* Tilde expansion for vi mode. */
+int
+rl_vi_tilde_expand (ignore, key)
+ int ignore, key;
+{
+ rl_tilde_expand (0, key);
+ _rl_vi_set_last (key, 1, rl_arg_sign); /* XXX */
+ rl_vi_insertion_mode (1, key);
+ return (0);
+}
+
+/* Previous word in vi mode. */
+int
+rl_vi_prev_word (count, key)
+ int count, key;
+{
+ if (count < 0)
+ return (rl_vi_next_word (-count, key));
+
+ if (rl_point == 0)
+ {
+ ding ();
+ return (0);
+ }
+
+ if (_rl_uppercase_p (key))
+ rl_vi_bWord (count);
+ else
+ rl_vi_bword (count);
+
+ return (0);
+}
+
+/* Next word in vi mode. */
+int
+rl_vi_next_word (count, key)
+ int count, key;
+{
+ if (count < 0)
+ return (rl_vi_prev_word (-count, key));
+
+ if (rl_point >= (rl_end - 1))
+ {
+ ding ();
+ return (0);
+ }
+
+ if (_rl_uppercase_p (key))
+ rl_vi_fWord (count);
+ else
+ rl_vi_fword (count);
+ return (0);
+}
+
+/* Move to the end of the ?next? word. */
+int
+rl_vi_end_word (count, key)
+ int count, key;
+{
+ if (count < 0)
+ {
+ ding ();
+ return -1;
+ }
+
+ if (_rl_uppercase_p (key))
+ rl_vi_eWord (count);
+ else
+ rl_vi_eword (count);
+ return (0);
+}
+
+/* Move forward a word the way that 'W' does. */
+int
+rl_vi_fWord (count)
+ int count;
+{
+ while (count-- && rl_point < (rl_end - 1))
+ {
+ /* Skip until whitespace. */
+ while (!whitespace (rl_line_buffer[rl_point]) && rl_point < rl_end)
+ rl_point++;
+
+ /* Now skip whitespace. */
+ while (whitespace (rl_line_buffer[rl_point]) && rl_point < rl_end)
+ rl_point++;
+ }
+ return (0);
+}
+
+int
+rl_vi_bWord (count)
+ int count;
+{
+ while (count-- && rl_point > 0)
+ {
+ /* If we are at the start of a word, move back to whitespace so
+ we will go back to the start of the previous word. */
+ if (!whitespace (rl_line_buffer[rl_point]) &&
+ whitespace (rl_line_buffer[rl_point - 1]))
+ rl_point--;
+
+ while (rl_point > 0 && whitespace (rl_line_buffer[rl_point]))
+ rl_point--;
+
+ if (rl_point > 0)
+ {
+ while (--rl_point >= 0 && !whitespace (rl_line_buffer[rl_point]));
+ rl_point++;
+ }
+ }
+ return (0);
+}
+
+int
+rl_vi_eWord (count)
+ int count;
+{
+ while (count-- && rl_point < (rl_end - 1))
+ {
+ if (!whitespace (rl_line_buffer[rl_point]))
+ rl_point++;
+
+ /* Move to the next non-whitespace character (to the start of the
+ next word). */
+ while (++rl_point < rl_end && whitespace (rl_line_buffer[rl_point]));
+
+ if (rl_point && rl_point < rl_end)
+ {
+ /* Skip whitespace. */
+ while (rl_point < rl_end && whitespace (rl_line_buffer[rl_point]))
+ rl_point++;
+
+ /* Skip until whitespace. */
+ while (rl_point < rl_end && !whitespace (rl_line_buffer[rl_point]))
+ rl_point++;
+
+ /* Move back to the last character of the word. */
+ rl_point--;
+ }
+ }
+ return (0);
+}
+
+int
+rl_vi_fword (count)
+ int count;
+{
+ while (count-- && rl_point < (rl_end - 1))
+ {
+ /* Move to white space (really non-identifer). */
+ if (isident (rl_line_buffer[rl_point]))
+ {
+ while (isident (rl_line_buffer[rl_point]) && rl_point < rl_end)
+ rl_point++;
+ }
+ else /* if (!whitespace (rl_line_buffer[rl_point])) */
+ {
+ while (!isident (rl_line_buffer[rl_point]) &&
+ !whitespace (rl_line_buffer[rl_point]) && rl_point < rl_end)
+ rl_point++;
+ }
+
+ /* Move past whitespace. */
+ while (whitespace (rl_line_buffer[rl_point]) && rl_point < rl_end)
+ rl_point++;
+ }
+ return (0);
+}
+
+int
+rl_vi_bword (count)
+ int count;
+{
+ while (count-- && rl_point > 0)
+ {
+ int last_is_ident;
+
+ /* If we are at the start of a word, move back to whitespace
+ so we will go back to the start of the previous word. */
+ if (!whitespace (rl_line_buffer[rl_point]) &&
+ whitespace (rl_line_buffer[rl_point - 1]))
+ rl_point--;
+
+ /* If this character and the previous character are `opposite', move
+ back so we don't get messed up by the rl_point++ down there in
+ the while loop. Without this code, words like `l;' screw up the
+ function. */
+ last_is_ident = isident (rl_line_buffer[rl_point - 1]);
+ if ((isident (rl_line_buffer[rl_point]) && !last_is_ident) ||
+ (!isident (rl_line_buffer[rl_point]) && last_is_ident))
+ rl_point--;
+
+ while (rl_point > 0 && whitespace (rl_line_buffer[rl_point]))
+ rl_point--;
+
+ if (rl_point > 0)
+ {
+ if (isident (rl_line_buffer[rl_point]))
+ while (--rl_point >= 0 && isident (rl_line_buffer[rl_point]));
+ else
+ while (--rl_point >= 0 && !isident (rl_line_buffer[rl_point]) &&
+ !whitespace (rl_line_buffer[rl_point]));
+ rl_point++;
+ }
+ }
+ return (0);
+}
+
+int
+rl_vi_eword (count)
+ int count;
+{
+ while (count-- && rl_point < rl_end - 1)
+ {
+ if (!whitespace (rl_line_buffer[rl_point]))
+ rl_point++;
+
+ while (rl_point < rl_end && whitespace (rl_line_buffer[rl_point]))
+ rl_point++;
+
+ if (rl_point < rl_end)
+ {
+ if (isident (rl_line_buffer[rl_point]))
+ while (++rl_point < rl_end && isident (rl_line_buffer[rl_point]));
+ else
+ while (++rl_point < rl_end && !isident (rl_line_buffer[rl_point])
+ && !whitespace (rl_line_buffer[rl_point]));
+ }
+ rl_point--;
+ }
+ return (0);
+}
+
+int
+rl_vi_insert_beg (count, key)
+ int count, key;
+{
+ rl_beg_of_line (1, key);
+ rl_vi_insertion_mode (1, key);
+ return (0);
+}
+
+int
+rl_vi_append_mode (count, key)
+ int count, key;
+{
+ if (rl_point < rl_end)
+ rl_point++;
+ rl_vi_insertion_mode (1, key);
+ return (0);
+}
+
+int
+rl_vi_append_eol (count, key)
+ int count, key;
+{
+ rl_end_of_line (1, key);
+ rl_vi_append_mode (1, key);
+ return (0);
+}
+
+/* What to do in the case of C-d. */
+int
+rl_vi_eof_maybe (count, c)
+ int count, c;
+{
+ return (rl_newline (1, '\n'));
+}
+
+/* Insertion mode stuff. */
+
+/* Switching from one mode to the other really just involves
+ switching keymaps. */
+int
+rl_vi_insertion_mode (count, key)
+ int count, key;
+{
+ _rl_keymap = vi_insertion_keymap;
+ _rl_vi_last_key_before_insert = key;
+ return (0);
+}
+
+static void
+_rl_vi_save_insert (up)
+ UNDO_LIST *up;
+{
+ int len, start, end;
+
+ start = up->start;
+ end = up->end;
+ len = end - start + 1;
+ if (len >= vi_insert_buffer_size)
+ {
+ vi_insert_buffer_size += (len + 32) - (len % 32);
+ vi_insert_buffer = xrealloc (vi_insert_buffer, vi_insert_buffer_size);
+ }
+ strncpy (vi_insert_buffer, rl_line_buffer + start, len - 1);
+ vi_insert_buffer[len-1] = '\0';
+}
+
+void
+_rl_vi_done_inserting ()
+{
+ if (_rl_vi_doing_insert)
+ {
+ rl_end_undo_group ();
+ /* Now, the text between rl_undo_list->next->start and
+ rl_undo_list->next->end is what was inserted while in insert
+ mode. It gets copied to VI_INSERT_BUFFER because it depends
+ on absolute indices into the line which may change (though they
+ probably will not). */
+ _rl_vi_doing_insert = 0;
+ _rl_vi_save_insert (rl_undo_list->next);
+ vi_continued_command = 1;
+ }
+ else
+ {
+ if (_rl_vi_last_key_before_insert == 'i' && rl_undo_list)
+ _rl_vi_save_insert (rl_undo_list);
+ /* XXX - Other keys probably need to be checked. */
+ else if (_rl_vi_last_key_before_insert == 'C')
+ rl_end_undo_group ();
+ while (_rl_undo_group_level > 0)
+ rl_end_undo_group ();
+ vi_continued_command = 0;
+ }
+}
+
+int
+rl_vi_movement_mode (count, key)
+ int count, key;
+{
+ if (rl_point > 0)
+ rl_backward (1, key);
+
+ _rl_keymap = vi_movement_keymap;
+ _rl_vi_done_inserting ();
+ return (0);
+}
+
+int
+rl_vi_arg_digit (count, c)
+ int count, c;
+{
+ if (c == '0' && rl_numeric_arg == 1 && !rl_explicit_arg)
+ return (rl_beg_of_line (1, c));
+ else
+ return (rl_digit_argument (count, c));
+}
+
+int
+rl_vi_change_case (count, ignore)
+ int count, ignore;
+{
+ char c = 0;
+
+ /* Don't try this on an empty line. */
+ if (rl_point >= rl_end)
+ return (0);
+
+ while (count-- && rl_point < rl_end)
+ {
+ if (_rl_uppercase_p (rl_line_buffer[rl_point]))
+ c = _rl_to_lower (rl_line_buffer[rl_point]);
+ else if (_rl_lowercase_p (rl_line_buffer[rl_point]))
+ c = _rl_to_upper (rl_line_buffer[rl_point]);
+ else
+ {
+ /* Just skip over characters neither upper nor lower case. */
+ rl_forward (1, c);
+ continue;
+ }
+
+ /* Vi is kind of strange here. */
+ if (c)
+ {
+ rl_begin_undo_group ();
+ rl_delete (1, c);
+ rl_insert (1, c);
+ rl_end_undo_group ();
+ rl_vi_check ();
+ }
+ else
+ rl_forward (1, c);
+ }
+ return (0);
+}
+
+int
+rl_vi_put (count, key)
+ int count, key;
+{
+ if (!_rl_uppercase_p (key) && (rl_point + 1 <= rl_end))
+ rl_point++;
+
+ rl_yank ();
+ rl_backward (1, key);
+ return (0);
+}
+
+int
+rl_vi_check ()
+{
+ if (rl_point && rl_point == rl_end)
+ rl_point--;
+ return (0);
+}
+
+int
+rl_vi_column (count, key)
+ int count, key;
+{
+ if (count > rl_end)
+ rl_end_of_line (1, key);
+ else
+ rl_point = count - 1;
+ return (0);
+}
+
+int
+rl_vi_domove (key, nextkey)
+ int key, *nextkey;
+{
+ int c, save;
+ int old_end;
+
+ rl_mark = rl_point;
+ c = rl_read_key ();
+ *nextkey = c;
+
+ if (!member (c, vi_motion))
+ {
+ if (_rl_digit_p (c))
+ {
+ save = rl_numeric_arg;
+ rl_numeric_arg = _rl_digit_value (c);
+ rl_digit_loop1 ();
+ rl_numeric_arg *= save;
+ c = rl_read_key (); /* real command */
+ *nextkey = c;
+ }
+ else if (key == c && (key == 'd' || key == 'y' || key == 'c'))
+ {
+ rl_mark = rl_end;
+ rl_beg_of_line (1, c);
+ _rl_vi_last_motion = c;
+ return (0);
+ }
+ else
+ return (-1);
+ }
+
+ _rl_vi_last_motion = c;
+
+ /* Append a blank character temporarily so that the motion routines
+ work right at the end of the line. */
+ old_end = rl_end;
+ rl_line_buffer[rl_end++] = ' ';
+ rl_line_buffer[rl_end] = '\0';
+
+ _rl_dispatch (c, _rl_keymap);
+
+ /* Remove the blank that we added. */
+ rl_end = old_end;
+ rl_line_buffer[rl_end] = '\0';
+ if (rl_point > rl_end)
+ rl_point = rl_end;
+
+ /* No change in position means the command failed. */
+ if (rl_mark == rl_point)
+ return (-1);
+
+ /* rl_vi_f[wW]ord () leaves the cursor on the first character of the next
+ word. If we are not at the end of the line, and we are on a
+ non-whitespace character, move back one (presumably to whitespace). */
+ if ((_rl_to_upper (c) == 'W') && rl_point < rl_end && rl_point > rl_mark &&
+ !whitespace (rl_line_buffer[rl_point]))
+ rl_point--;
+
+ /* If cw or cW, back up to the end of a word, so the behaviour of ce
+ or cE is the actual result. Brute-force, no subtlety. */
+ if (key == 'c' && rl_point >= rl_mark && (_rl_to_upper (c) == 'W'))
+ {
+ /* Don't move farther back than where we started. */
+ while (rl_point > rl_mark && whitespace (rl_line_buffer[rl_point]))
+ rl_point--;
+
+ /* Posix.2 says that if cw or cW moves the cursor towards the end of
+ the line, the character under the cursor should be deleted. */
+ if (rl_point == rl_mark)
+ rl_point++;
+ else
+ {
+ /* Move past the end of the word so that the kill doesn't
+ remove the last letter of the previous word. Only do this
+ if we are not at the end of the line. */
+ if (rl_point >= 0 && rl_point < (rl_end - 1) && !whitespace (rl_line_buffer[rl_point]))
+ rl_point++;
+ }
+ }
+
+ if (rl_mark < rl_point)
+ exchange (rl_point, rl_mark);
+
+ return (0);
+}
+
+/* A simplified loop for vi. Don't dispatch key at end.
+ Don't recognize minus sign? */
+static int
+rl_digit_loop1 ()
+{
+ int key, c;
+
+ while (1)
+ {
+ rl_message ("(arg: %d) ", rl_arg_sign * rl_numeric_arg, 0);
+ key = c = rl_read_key ();
+
+ if (_rl_keymap[c].type == ISFUNC &&
+ _rl_keymap[c].function == rl_universal_argument)
+ {
+ rl_numeric_arg *= 4;
+ continue;
+ }
+
+ c = UNMETA (c);
+ if (_rl_digit_p (c))
+ {
+ if (rl_explicit_arg)
+ rl_numeric_arg = (rl_numeric_arg * 10) + _rl_digit_value (c);
+ else
+ rl_numeric_arg = _rl_digit_value (c);
+ rl_explicit_arg = 1;
+ }
+ else
+ {
+ rl_clear_message ();
+ rl_stuff_char (key);
+ break;
+ }
+ }
+ return (0);
+}
+
+int
+rl_vi_delete_to (count, key)
+ int count, key;
+{
+ int c;
+
+ if (_rl_uppercase_p (key))
+ rl_stuff_char ('$');
+ else if (vi_redoing)
+ rl_stuff_char (_rl_vi_last_motion);
+
+ if (rl_vi_domove (key, &c))
+ {
+ ding ();
+ return -1;
+ }
+
+ /* These are the motion commands that do not require adjusting the
+ mark. */
+ if ((strchr (" l|h^0bB", c) == 0) && (rl_mark < rl_end))
+ rl_mark++;
+
+ rl_kill_text (rl_point, rl_mark);
+ return (0);
+}
+
+int
+rl_vi_change_to (count, key)
+ int count, key;
+{
+ int c, start_pos;
+
+ if (_rl_uppercase_p (key))
+ rl_stuff_char ('$');
+ else if (vi_redoing)
+ rl_stuff_char (_rl_vi_last_motion);
+
+ start_pos = rl_point;
+
+ if (rl_vi_domove (key, &c))
+ {
+ ding ();
+ return -1;
+ }
+
+ /* These are the motion commands that do not require adjusting the
+ mark. c[wW] are handled by special-case code in rl_vi_domove(),
+ and already leave the mark at the correct location. */
+ if ((strchr (" l|hwW^0bB", c) == 0) && (rl_mark < rl_end))
+ rl_mark++;
+
+ /* The cursor never moves with c[wW]. */
+ if ((_rl_to_upper (c) == 'W') && rl_point < start_pos)
+ rl_point = start_pos;
+
+ if (vi_redoing)
+ {
+ if (vi_insert_buffer && *vi_insert_buffer)
+ rl_begin_undo_group ();
+ rl_delete_text (rl_point, rl_mark);
+ if (vi_insert_buffer && *vi_insert_buffer)
+ {
+ rl_insert_text (vi_insert_buffer);
+ rl_end_undo_group ();
+ }
+ }
+ else
+ {
+ rl_begin_undo_group (); /* to make the `u' command work */
+ rl_kill_text (rl_point, rl_mark);
+ /* `C' does not save the text inserted for undoing or redoing. */
+ if (_rl_uppercase_p (key) == 0)
+ _rl_vi_doing_insert = 1;
+ _rl_vi_set_last (key, count, rl_arg_sign);
+ rl_vi_insertion_mode (1, key);
+ }
+
+ return (0);
+}
+
+int
+rl_vi_yank_to (count, key)
+ int count, key;
+{
+ int c, save = rl_point;
+
+ if (_rl_uppercase_p (key))
+ rl_stuff_char ('$');
+
+ if (rl_vi_domove (key, &c))
+ {
+ ding ();
+ return -1;
+ }
+
+ /* These are the motion commands that do not require adjusting the
+ mark. */
+ if ((strchr (" l|h^0%bB", c) == 0) && (rl_mark < rl_end))
+ rl_mark++;
+
+ rl_begin_undo_group ();
+ rl_kill_text (rl_point, rl_mark);
+ rl_end_undo_group ();
+ rl_do_undo ();
+ rl_point = save;
+
+ return (0);
+}
+
+int
+rl_vi_delete (count, key)
+ int count, key;
+{
+ int end;
+
+ if (rl_end == 0)
+ {
+ ding ();
+ return -1;
+ }
+
+ end = rl_point + count;
+
+ if (end >= rl_end)
+ end = rl_end;
+
+ rl_kill_text (rl_point, end);
+
+ if (rl_point > 0 && rl_point == rl_end)
+ rl_backward (1, key);
+ return (0);
+}
+
+int
+rl_vi_back_to_indent (count, key)
+ int count, key;
+{
+ rl_beg_of_line (1, key);
+ while (rl_point < rl_end && whitespace (rl_line_buffer[rl_point]))
+ rl_point++;
+ return (0);
+}
+
+int
+rl_vi_first_print (count, key)
+ int count, key;
+{
+ return (rl_vi_back_to_indent (1, key));
+}
+
+int
+rl_vi_char_search (count, key)
+ int count, key;
+{
+ static char target;
+ static int orig_dir, dir;
+
+ if (key == ';' || key == ',')
+ dir = key == ';' ? orig_dir : -orig_dir;
+ else
+ {
+ if (vi_redoing)
+ target = _rl_vi_last_search_char;
+ else
+ _rl_vi_last_search_char = target = rl_getc (rl_instream);
+
+ switch (key)
+ {
+ case 't':
+ orig_dir = dir = FTO;
+ break;
+
+ case 'T':
+ orig_dir = dir = BTO;
+ break;
+
+ case 'f':
+ orig_dir = dir = FFIND;
+ break;
+
+ case 'F':
+ orig_dir = dir = BFIND;
+ break;
+ }
+ }
+
+ return (_rl_char_search_internal (count, dir, target));
+}
+
+/* Match brackets */
+int
+rl_vi_match (ignore, key)
+ int ignore, key;
+{
+ int count = 1, brack, pos;
+
+ pos = rl_point;
+ if ((brack = rl_vi_bracktype (rl_line_buffer[rl_point])) == 0)
+ {
+ while ((brack = rl_vi_bracktype (rl_line_buffer[rl_point])) == 0 &&
+ rl_point < rl_end - 1)
+ rl_forward (1, key);
+
+ if (brack <= 0)
+ {
+ rl_point = pos;
+ ding ();
+ return -1;
+ }
+ }
+
+ pos = rl_point;
+
+ if (brack < 0)
+ {
+ while (count)
+ {
+ if (--pos >= 0)
+ {
+ int b = rl_vi_bracktype (rl_line_buffer[pos]);
+ if (b == -brack)
+ count--;
+ else if (b == brack)
+ count++;
+ }
+ else
+ {
+ ding ();
+ return -1;
+ }
+ }
+ }
+ else
+ { /* brack > 0 */
+ while (count)
+ {
+ if (++pos < rl_end)
+ {
+ int b = rl_vi_bracktype (rl_line_buffer[pos]);
+ if (b == -brack)
+ count--;
+ else if (b == brack)
+ count++;
+ }
+ else
+ {
+ ding ();
+ return -1;
+ }
+ }
+ }
+ rl_point = pos;
+ return (0);
+}
+
+int
+rl_vi_bracktype (c)
+ int c;
+{
+ switch (c)
+ {
+ case '(': return 1;
+ case ')': return -1;
+ case '[': return 2;
+ case ']': return -2;
+ case '{': return 3;
+ case '}': return -3;
+ default: return 0;
+ }
+}
+
+int
+rl_vi_change_char (count, key)
+ int count, key;
+{
+ int c;
+
+ if (vi_redoing)
+ c = _rl_vi_last_replacement;
+ else
+ _rl_vi_last_replacement = c = rl_getc (rl_instream);
+
+ if (c == '\033' || c == CTRL ('C'))
+ return -1;
+
+ while (count-- && rl_point < rl_end)
+ {
+ rl_begin_undo_group ();
+
+ rl_delete (1, c);
+ rl_insert (1, c);
+ if (count == 0)
+ rl_backward (1, c);
+
+ rl_end_undo_group ();
+ }
+ return (0);
+}
+
+int
+rl_vi_subst (count, key)
+ int count, key;
+{
+ rl_begin_undo_group ();
+
+ if (_rl_uppercase_p (key))
+ {
+ rl_beg_of_line (1, key);
+ rl_kill_line (1, key);
+ }
+ else
+ rl_delete_text (rl_point, rl_point+count);
+
+ rl_end_undo_group ();
+
+ _rl_vi_set_last (key, count, rl_arg_sign);
+
+ if (vi_redoing)
+ {
+ int o = _rl_doing_an_undo;
+
+ _rl_doing_an_undo = 1;
+ if (vi_insert_buffer && *vi_insert_buffer)
+ rl_insert_text (vi_insert_buffer);
+ _rl_doing_an_undo = o;
+ }
+ else
+ {
+ rl_begin_undo_group ();
+ _rl_vi_doing_insert = 1;
+ rl_vi_insertion_mode (1, key);
+ }
+
+ return (0);
+}
+
+int
+rl_vi_overstrike (count, key)
+ int count, key;
+{
+ int i;
+
+ if (_rl_vi_doing_insert == 0)
+ {
+ _rl_vi_doing_insert = 1;
+ rl_begin_undo_group ();
+ }
+
+ for (i = 0; i < count; i++)
+ {
+ vi_replace_count++;
+ rl_begin_undo_group ();
+
+ if (rl_point < rl_end)
+ {
+ rl_delete (1, key);
+ rl_insert (1, key);
+ }
+ else
+ rl_insert (1, key);
+
+ rl_end_undo_group ();
+ }
+ return (0);
+}
+
+int
+rl_vi_overstrike_delete (count, key)
+ int count, key;
+{
+ int i, s;
+
+ for (i = 0; i < count; i++)
+ {
+ if (vi_replace_count == 0)
+ {
+ ding ();
+ break;
+ }
+ s = rl_point;
+
+ if (rl_do_undo ())
+ vi_replace_count--;
+
+ if (rl_point == s)
+ rl_backward (1, key);
+ }
+
+ if (vi_replace_count == 0 && _rl_vi_doing_insert)
+ {
+ rl_end_undo_group ();
+ rl_do_undo ();
+ _rl_vi_doing_insert = 0;
+ }
+ return (0);
+}
+
+int
+rl_vi_replace (count, key)
+ int count, key;
+{
+ int i;
+
+ vi_replace_count = 0;
+
+ if (!vi_replace_map)
+ {
+ vi_replace_map = rl_make_bare_keymap ();
+
+ for (i = ' '; i < KEYMAP_SIZE; i++)
+ vi_replace_map[i].function = rl_vi_overstrike;
+
+ vi_replace_map[RUBOUT].function = rl_vi_overstrike_delete;
+ vi_replace_map[ESC].function = rl_vi_movement_mode;
+ vi_replace_map[RETURN].function = rl_newline;
+ vi_replace_map[NEWLINE].function = rl_newline;
+
+ /* If the normal vi insertion keymap has ^H bound to erase, do the
+ same here. Probably should remove the assignment to RUBOUT up
+ there, but I don't think it will make a difference in real life. */
+ if (vi_insertion_keymap[CTRL ('H')].type == ISFUNC &&
+ vi_insertion_keymap[CTRL ('H')].function == rl_rubout)
+ vi_replace_map[CTRL ('H')].function = rl_vi_overstrike_delete;
+
+ }
+ _rl_keymap = vi_replace_map;
+ return (0);
+}
+
+#if 0
+/* Try to complete the word we are standing on or the word that ends with
+ the previous character. A space matches everything. Word delimiters are
+ space and ;. */
+int
+rl_vi_possible_completions()
+{
+ int save_pos = rl_point;
+
+ if (rl_line_buffer[rl_point] != ' ' && rl_line_buffer[rl_point] != ';')
+ {
+ while (rl_point < rl_end && rl_line_buffer[rl_point] != ' ' &&
+ rl_line_buffer[rl_point] != ';')
+ rl_point++;
+ }
+ else if (rl_line_buffer[rl_point - 1] == ';')
+ {
+ ding ();
+ return (0);
+ }
+
+ rl_possible_completions ();
+ rl_point = save_pos;
+
+ return (0);
+}
+#endif
+
+/* Functions to save and restore marks. */
+int
+rl_vi_set_mark (count, key)
+ int count, key;
+{
+ int ch;
+
+ ch = rl_read_key ();
+ if (_rl_lowercase_p (ch) == 0)
+ {
+ ding ();
+ return -1;
+ }
+ ch -= 'a';
+ vi_mark_chars[ch] = rl_point;
+ return 0;
+}
+
+int
+rl_vi_goto_mark (count, key)
+ int count, key;
+{
+ int ch;
+
+ ch = rl_read_key ();
+ if (ch == '`')
+ {
+ rl_point = rl_mark;
+ return 0;
+ }
+ else if (_rl_lowercase_p (ch) == 0)
+ {
+ ding ();
+ return -1;
+ }
+
+ ch -= 'a';
+ if (vi_mark_chars[ch] == -1)
+ {
+ ding ();
+ return -1;
+ }
+ rl_point = vi_mark_chars[ch];
+ return 0;
+}
+
+#endif /* VI_MODE */
diff --git a/contrib/libreadline/xmalloc.c b/contrib/libreadline/xmalloc.c
new file mode 100644
index 0000000..4160651
--- /dev/null
+++ b/contrib/libreadline/xmalloc.c
@@ -0,0 +1,87 @@
+/* xmalloc.c -- safe versions of malloc and realloc */
+
+/* Copyright (C) 1991 Free Software Foundation, Inc.
+
+ This file is part of GNU Readline, a library for reading lines
+ of text with interactive input and history editing.
+
+ Readline is free software; you can redistribute it and/or modify it
+ under the terms of the GNU General Public License as published by the
+ Free Software Foundation; either version 1, or (at your option) any
+ later version.
+
+ Readline is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with Readline; see the file COPYING. If not, write to the Free
+ Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
+
+#if defined (HAVE_CONFIG_H)
+#include <config.h>
+#endif
+
+#include <stdio.h>
+
+#if defined (HAVE_STDLIB_H)
+# include <stdlib.h>
+#else
+# include "ansi_stdlib.h"
+#endif /* HAVE_STDLIB_H */
+
+static void memory_error_and_abort ();
+
+/* **************************************************************** */
+/* */
+/* Memory Allocation and Deallocation. */
+/* */
+/* **************************************************************** */
+
+/* Return a pointer to free()able block of memory large enough
+ to hold BYTES number of bytes. If the memory cannot be allocated,
+ print an error message and abort. */
+char *
+xmalloc (bytes)
+ int bytes;
+{
+ char *temp;
+
+ temp = (char *)malloc (bytes);
+ if (temp == 0)
+ memory_error_and_abort ("xmalloc");
+ return (temp);
+}
+
+char *
+xrealloc (pointer, bytes)
+ char *pointer;
+ int bytes;
+{
+ char *temp;
+
+ temp = pointer ? (char *)realloc (pointer, bytes) : (char *)malloc (bytes);
+
+ if (temp == 0)
+ memory_error_and_abort ("xrealloc");
+ return (temp);
+}
+
+static void
+memory_error_and_abort (fname)
+ char *fname;
+{
+ fprintf (stderr, "%s: out of virtual memory\n", fname);
+ exit (2);
+}
+
+/* Use this as the function to call when adding unwind protects so we
+ don't need to know what free() returns. */
+void
+xfree (string)
+ char *string;
+{
+ if (string)
+ free (string);
+}
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