Import unmodified (but trimmed) ncurses 5.0 prerelease 990821.

This contains the full eti (panel, form, menu) extensions.
bmake glue to follow.

Obtained from:	ftp://ftp.clark.net/pub/dickey/ncurses

1 files changed, 251 insertions, 0 deletions

diff --git a/contrib/ncurses/TO-DO b/contrib/ncurses/TO-DO
new file mode 100644
index 0000000..21e8ee0
--- /dev/null
+++ b/contrib/ncurses/TO-DO
@@ -0,0 +1,251 @@
+-- $Id: TO-DO,v 1.39 1998/07/12 00:25:39 tom Exp $
+
+SHORT-TERM TO-DO ITEMS:
+
+Known Problems:
+
+* GNAT does not put libraries in the correct order, so a build only links
+  properly if you use shared libraries since -lncurses is first.
+
+* XPG4 specifies that the enhanced features are not available unless the
+  _XOPEN_SOURCE_EXTENDED test macro is defined by the application.  Ncurses uses
+  this macro (incorrectly) to address a dependency upon wchar_t.  The functions
+  which use wchar_t are not implemented, so the effect of the test macro is
+  pointless.
+
+* The screen optimization has been tested only in an ad hoc manner.  We should
+  develop a good set of regression tests to cover lib_doupdate.c and
+  lib_mvcur.c.
+
+* Magic cookie support does not work, since the logic does not take into account
+  refresh.  Also, the initial optimize does not adjust the current location
+  when a cookie is emitted.
+
+* Scrolling optimization has holes: for example, it forces repaints of the
+  screen between calls to refresh().
+
+* SVr4 uses slightly different rules for determining when softkeys are shown.
+  For example, they are initially displayed (before the ncurses 'e' test
+  activates them), and a touchwin can apparently also force them to be
+  displayed.
+
++ The code departs from perfect 8-bit cleanness in one respect; you cannot
+  specify a character \200 as part of a capability string, because the terminfo
+  library interprets \200 as a request to embed NUL (\000) at that point.  This
+  is a legacy terminfo property we can't mess with.
+
+* The window classes defined in the c++ subdirectory need documentation.
+  Some C++ programmer could earn a lot of good karma by doing this...
+
+Portability (or lack thereof):
+
+* Users of older System V UNIXes (but not Solaris, and probably not SVr4)
+  may trip over a known problem with the signal-handling code which causes
+  abrupt termination of ncurses applications following resume from a ^Z
+  suspend (this problem was first seen running lynx).  You will not see 
+  this problem if you are running Linux or one of the 4.4BSD derivatives
+  like FreeBSD, NetBSD, or BSDI.  For details, see the analysis in the
+  header comment of ncurses/lib_tstp.c.
+
+* In theory, vwprintw and vwscanf are supposed to use the older varargs.h
+  interface for handling variadic argument lists.  Linux doesn't have
+  varargs.h, it has the newer X/Open-standard stdargs.h equivalent. So
+  these functions use stdargs instead.  This is unlikely to be a problem 
+  unless you're building ncurses on a System V old enough to only have
+  varargs.h.  (Solaris 2.5.1 uses the stdarg.h binding as well).
+
+* If you're using a BSD earlier than 4.4BSD, or a Linux old enough not to
+  have a native vsscanf(3) in its library, vwscanw() will not work.  You lose.
+  (It should work on any System V, however).  If you want to fix this, add
+  an implementation to ncurses/vsscanf.c.
+
+* The demo build for the c++ library craps out with many link errors under gcc
+  2.6.3.  We're told the C++ support in 2.6.3 is broken and that the right
+  fix is to upgrade to 2.7.0.  This demo is also known to not build with
+  the Sun SPARCworks 4.1 C++ compiler, due to a problem resolving templates.
+
+* Under Ultrix, configure craps out (Ultrix sh is lame).  Run it under ksh.
+
+* We've not tested the configure script with cross-compilers.  The autoconf
+  tests are supposed to be able to support this (please report bugs).  You will
+  have to configure and build in two steps.  The first step must create the
+  automatically-generated sources (e.g., comp_captab.c) on your host machine. 
+  Then, run "make mostlyclean", remove config.* from the top-level directory
+  and configure for the cross-compiler.
+
++ terminfo.5 does not format with the SunOS (and most other platform's) tbl
+  utility because it relies on a diversion for each table entry.  Get the groff
+  package.
+
+Untested features:
+
+* The code for the HP color model using set_color_pair is untested.
+
+* The code for handling soft labels on a terminal type with built-in support
+  for them (num_labels > 0, label_height, label_width, label_format, label_off,
+  label_on, plab_norm, lab_f*) has not been tested.  The label_format and
+  lab_f* capabilities aren't presently used.
+
+LONGER-TERM TO-DO ITEMS:
+
+1. Extended COSE conformance
+
+There is an XPG4 standard recently released which describes a superset
+of the SVr4 API.  The library is BASE conformant with this standard.
+We would like to make ncurses fully conformant at the EXTENDED level
+supporting internationalization.
+
+Here are page references to all material involving wide or multi-byte
+characters in Issue 4 of the XSI Curses standard, with notes on their
+status in this implementation:
+
+	Page 1 (1.1.2) New Features discussion of internationalization.
+	Page 12 (2.4): Definition of cchar_t, wchar_t.
+	Page 16 (3.3.2): Introduction of multi-column characters.
+	Page 17-18 (3.3.5): Description of non-spacing characters.
+	Page 19-21 (3.4.2): Basic character operations.
+	Page 34 (addnstr): These should now call underlying wide-
+character functions, and do (through waddnstr) if _XOPEN_SOURCE_EXTENDED is on).
+	Page 35 (addnwstr): wide-character add-string functions.  All macros 
+except waddnwstr() which is not yet defined.
+	Page 36 (add_wch): wide-character add-char functions.  All macros 
+except wadd_wch() which is not yet defined.
+	Page 39 (attr_get): implemented -- we've just made the current-
+attributes field of the window an attr_t.
+	Page 43 (bkgrnd):  None of these are implemented.
+	Page 45 (border_set): Neither of these is implemented.
+	Page 47 (box_set): box_set implemented as macro, but the underlying
+wborder_set() is not yet defined.
+	Page 78 (echo_wchar): echo_wchar() implemented as macro, underlying
+wecho_wchar() not yet implemented.
+	Page 81 (erasechar): Neither entry point is implemented.
+	Page 87 (getbkgrnd): Not implemented.
+	Page 88 (getcchar): Not implemented.
+	Page 93 (getn_wstr): All implemented (as macros) except the
+underlying wgetn_wstr().
+	Page 97 (get_wch):  All implemented (as macros) except the
+underlying wget_wch().
+	Page 99 (get_wstr): Xref to page 93.
+	Page 105 (hline_set): All implemented (as macros) except the
+underlying whline_set(), wvline_set().
+	Page 114 (innstr): Multi-byte character-completeness check is
+not implemented.
+	Page 115 (innwstr): All implemented (as macros) except the
+underlying winnw_str().
+	Page 119 (insnstr): Implementation may not be correct for multi-byte
+characters.
+	Page 120 (ins_nwstr): Not implemented.
+	Page 121 (insstr): Xref to page 119.
+	Page 122 (instr): Xref to page 119.
+	Page 123 (ins_wch): Not implemented.
+	Page 124 (ins_wstr): Xref to page 120.
+	Page 126 (in_wch): Not implemented.
+	Page 127 (in_wchnstr): Not implemented.
+	Page 128 (inwstr): Xref to page 115.
+	Page 133 (killwchar): killwchar not implemented.
+	Page 158 (pechochar): pecho_wchar() not implemented.
+	Page 176 (setcchar): Not implemented.
+	Page 181 (slk_attroff): slk_wset not implemented.
+	Page 200 (ungetch): unget_wch() not implemented.
+	Page 203 (vidattr): vid_attr() and vid_puts() not implemented.
+	Page 206 (vline_set): Xref to page 105.
+	Page 214 (wunctrl): Not implemented.
+	Page 216 (curses.h): cchar_t, wint_t, wchar_t references.
+	Page 220 (curses.h): KEY_CODE_YES
+
+Basically, the macro superstructure is there but the core is absent.  We
+need better multi-locale support guarantees from the OS to finish this.
+If you are working on internationalization support, please contact us so
+we can cooperate.
+
+2. DOS port
+
+Only 16 of the 55 files in the library depend on the terminfo format.
+It should be possible to further kernelize the package, then rewrite 
+a small number of core files to produce a functionally-compatible
+port that would do updates to a memory-mapped screen area.  The first
+result of this would be a DOS port.
+
+3. X port
+
+It would be nice if ncurses could recognize when it was running under X and
+maintain its own window.  With this feature, all ncurses programs would
+automatically become X programs.  The challenge is to handle resize events
+properly.
+
+4. Unused capabilities
+
+The currently unused capabilities fall naturally into several groups:
+
+A. Status-line capabilities:
+
+	Booleans: has_status_line, status_line_esc_ok.
+	Numerics: width_status_line.
+	Strings: dis_status_line, from_status_line, to_status_line.
+
+System V Release 1 curses made no use of these at all.  SVr4's use, if
+any, is unknown.  From the AT&T termcap file it looks like curses, in general,
+shouldn't use them; terminal variants with status lines have their line count
+decremented by 1, suggesting that curses is supposed to leave the status line
+alone.
+
+B. Printer capabilities:
+
+	Boolean: col_addr_glitch, cr_cancels_micro_mode, has_print_wheel,
+		row_addr_glitch, semi_auto_right_margin, cpi_changes_res,
+		lpi_changes_res.
+	Numeric: buffer_capacity, dot_horz_spacing, dot_vert_spacing,
+		max_micro_address, max_micro_jump, micro_col_size,
+		micro_line_size, number_of_pins, output_res_char,
+		output_res_line, output_res_horz_inch, print_rate,
+		wide_char_size, bit_image_entwining, bit_image_type.
+	String: down_half_line, form_feed, up_half_line, set_left_margin,
+		set_right_margin, clear_margins, change_char_pitch
+		... set_page_length (all the SVr4 printer caps),
+
+Curses doesn't use these.
+
+C. Printer-control capabilities:
+
+	Boolean: prtr_silent.
+	Strings: print_screen, prtr_on, prtr_off, prtr_non.
+
+Curses doesn't use these.
+
+D. Dialer strings:
+
+	Strings: hangup, dial_phone, quick_dial, tone, pulse, flash_hook,
+		fixed_pause, wait_tone.
+
+Curses doesn't use these.
+
+E. Window and virtual-terminal capabilities:
+
+	Numerics: maximum_windows, virtual_terminal.
+	Strings: req_for_input, create_window, goto_window, set_window.
+
+These seem to be fossils from some AT&T experiments on character-based
+window systems that never escaped the lab.  The virtual_terminal cap had
+something to do with building terminal emulations into tty line disciplines.
+
+F. Unused VDT capabilities:
+
+	Booleans: erase_overstrike, has_meta_key, insert_null_glitch,
+		move_insert, dest_tabs_magic_smso, transparent_underline,
+		needs_xon_xoff, hard_cursor.
+	Numerics: lines_of_memory, buttons.
+	Strings: pkey_key, pkey_local, pkey_xmit, underline_char, 
+		enter_xon_mode,	exit_xon_mode, xon_character, xoff_character, 
+		display_clock, remove_clock, user[0-5], display_pc_char,
+		enter_scancode_mode, exit_scancode_mode, pc_term_options, 
+		scancode_escape, alt_scancode_esc.
+
+These are the potentially important ones for ncurses.  Notes:
+
+	i) ncurses doesn't need move_insert; it never uses cup/hpa/vpa while
+		insert_mode is on.
+
+	ii) We probably don't care about dest_tabs_magic_smso; only
+		Telerays used it and they're all long obsolete.
+
+