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* Sync sh(1) in stable/10 to head.jmmv2014-03-091-1/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This is a MFC of all the commits listed below. My original goal of this change was to only merge the move of the tests from tools/regression/bin/ into the new layout (which include tests for sh(1) and other tools as well). However, doing so is tricky due to the ongoing work in sh(1) and, especially, the many changes to its tests since stable/10 was first branched. Merging everything is the simplest way to achieve this goal and, as a bonus point, we get various fixes and miscellaneous improvements into the branch. Per jilles' suggestion, I'm avoiding the merge of a couple of changes (r256850 and r257506) that required depending kernel changes. I'm also avoiding very recent changes that have not had a long enough time to be validated in current. This is "make tinderbox" clean. r256735 sh: Remove one syscall when waiting for a foreground job. r257399 sh: Allow trapping SIGINT/SIGQUIT after ignore because of '&'. r257504 sh: Reorder union node to reduce its size on 64-bit platforms. r257920 sh: Add a test case for would-be assignments that are not due to quoting. r257929 sh: Properly quote alias output from command -v. r258489 sh: Add tests for the </dev/null implicit in a background command. r258533 sh: Add more tests for the </dev/null implicit in a background command. r258535 sh: Make <&0 disable the </dev/null implicit in a background command. r258776 sh: Prefer memcpy() to strcpy() in most cases. Remove the scopy macro. r259047 sh: Split set -x output into a separate function. r259210 Migrate tools/regression/bin/ tests to the new layout. r259844 sh: Remove an unused variable. r259846 sh: Initialize OPTIND=1 even if it came from the environment. r259874 sh: Simplify code related to PPID variable. r259946 sh: Don't check input for non-whitespace if history is disabled. r260246 sh(1): Discourage use of -e. r260506 Run the sh(1) and test(1) tests as unprivileged. r260586 Mark the bin/pax tests as requiring perl. r260634 Use TAP_TESTS_PERL to register the legacy_test in bin/pax. r260635 Replace hand-crafted Kyuafiles with automatic generation. r260654 sh: Remove SIGWINCH handler and just check for resize before every read. r261121 sh: Add test for nested alias. r261125 sh: Solve the alias recursion problem in a less hackish way. r261141 sh: Do not depend on parse/execute split in new alias test. r261160 sh: Add tests for alias names after another alias. r261192 sh: Allow aliases to force alias substitution on the following word. r262533 sh: Make expari() static. r262565 sh: Do not corrupt internal representation if LINENO inner expansion fails. r262697 sh: Simplify expari(). Reviewed by: jilles
* sh: Use vfork in a few common cases.jilles2012-02-041-0/+2
| | | | | | | | | | | | | | | | | This uses vfork() for simple commands and command substitutions containing a single simple command, invoking an external program under certain conditions (no redirections or variable assignments, non-interactive shell, no job control). These restrictions limit the amount of code executed in a vforked child. There is a large speedup (for example 35%) in microbenchmarks. The difference in buildkernel is smaller (for example 0.5%) but still statistically significant. See http://lists.freebsd.org/pipermail/freebsd-hackers/2012-January/037581.html for some numbers. The use of vfork() can be disabled by setting a variable named SH_DISABLE_VFORK.
* sh: Fix duplicate prototypes for builtins.jilles2011-06-131-4/+0
| | | | | | Have mkbuiltins write the prototypes for the *cmd functions to builtins.h instead of builtins.c and include builtins.h in more .c files instead of duplicating prototypes for *cmd functions in other headers.
* sh: Save/restore changed variables in optimized command substitution.jilles2011-06-121-0/+2
| | | | | | | | | | | In optimized command substitution, save and restore any variables changed by expansions (${var=value} and $((var=assigned))), instead of trying to determine if an expansion may cause such changes. If $! is referenced in optimized command substitution, do not cause jobs to be remembered longer. This fixes $(jobs $!) again, simplifies the man page and shortens the code.
* sh: Add \u/\U support (in $'...') for UTF-8.jilles2011-05-081-0/+3
| | | | | | | | | | Because we have no iconv in base, support for other charsets is not possible. Note that \u/\U are processed using the locale that was active when the shell started. This is necessary to avoid behaviour that depends on the parse/execute split (for example when placing braces around an entire script). Therefore, UTF-8 encoding is implemented manually.
* sh: Optimize variable code by storing the length of the name.jilles2011-05-081-0/+1
| | | | Obtained from: NetBSD
* sh: Track if the current locale's charset is UTF-8 or not.jilles2011-05-061-0/+3
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* sh: Check readonly status for assignments on regular builtins.jilles2011-01-011-1/+2
| | | | | | | | | | An error message is written, the builtin is not executed, nonzero exit status is returned but the shell does not abort. This was already checked for special builtins and external commands, with the same consequences except that the shell aborts for special builtins. Obtained from: NetBSD
* sh: Pass TERM changes to libedit.jilles2010-06-021-0/+2
| | | | | | | | I have changed the patch slightly to ignore TERM changes in subshells. PR: bin/146916 Submitted by: Guy Yur Obtained from: NetBSD
* sh: Apply locale vars on builtins, recognize LC_MESSAGES as a locale var.jilles2010-05-051-0/+2
| | | | | | | | | | | | | | | | This allows doing things like LC_ALL=C some_builtin to run a builtin under a different locale, just like is possible with external programs. The immediate reason is that this allows making printf(1) a builtin without breaking things like LC_NUMERIC=C printf '%f\n' 1.2 This change also affects special builtins, as even though the assignment is persistent, the export is only to the builtin (unless the variable was already exported). Note: for this to work for builtins that also exist as external programs such as /bin/test, the setlocale() call must be under #ifndef SHELL. The shell will do the setlocale() calls which may not agree with the environment variables.
* sh: Various warning fixes (from WARNS=6 NO_WERROR=1):jilles2009-12-271-1/+0
| | | | | | | - const - initializations to silence -Wuninitialized (it was safe anyway) - remove nested extern declarations - rename "index" locals to "idx"
* sh: Constify various strings.jilles2009-12-241-5/+5
| | | | | Most of this is adding const keywords, but setvar() in var.c had to be changed somewhat more.
* Implement the PS4 variable which is defined by the POSIX User Portabilitystefanf2006-06-151-0/+2
| | | | | | | | | | | | Utilities option. Its value is printed at the beginning of the line if tracing (-x) is active. PS4 defaults to the string "+ " which is compatible with the old behaviour to always print "+ ". We still need to expand variables in PS1, PS2 and PS4. PR: 46441 (part of) Submitted by: schweikh Obtained from: NetBSD
* s/staticly/statically/gschweikh2006-02-041-2/+2
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* Remove clause 3 from the UCB licenses.markm2004-04-061-4/+0
| | | | OK'ed by: imp, core
* Remove bits and pieces of support for atty, which was made obsolete bytjr2002-10-011-12/+0
| | | | | | adding history and vi/emacs-style line editing to the shell itself. Atty was a user-mode terminal emulator (like screen and window) that did line editing and history.
* Implement $PPID, the parent process ID of the shell.tjr2002-06-011-0/+1
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* o __P has been reovedimp2002-02-021-18/+18
| | | | | | | | | | | | | | | | | | o Old-style K&R declarations have been converted to new C89 style o register has been removed o prototype for main() has been removed (gcc3 makes it an error) o int main(int argc, char *argv[]) is the preferred main definition. o Attempt to not break style(9) conformance for declarations more than they already are. o Change int foo() { ... to int foo(void) { ...
* $Id$ -> $FreeBSD$peter1999-08-271-1/+1
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* Better handling of word splitting. Don't record the same regiontegge1998-09-061-1/+2
| | | | | | multiple times when performing nested variable expansion, and preserve some quoting information in order to avoid removing apparently empty expansion result.
* Revert $FreeBSD$ to $Id$peter1997-02-221-1/+1
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* Make the long-awaited change from $Id$ to $FreeBSD$jkh1997-01-141-1/+1
| | | | | | | | This will make a number of things easier in the future, as well as (finally!) avoiding the Id-smashing problem which has plagued developers for so long. Boy, I'm glad we're not using sup anymore. This update would have been insane otherwise.
* Merge in NetBSD mods and -Wall cleaning.steve1996-12-141-15/+28
| | | | Obtained from: NetBSD, me
* Merge of 4.4-Lite2 sh source, plus some gcc -Wall cleaning. This is apeter1996-09-011-26/+17
| | | | | | | | | | | | | | merge of parallel duplicate work by Steve Price and myself. :-] There are some changes to the build that are my fault... mkinit.c was trying (poorly) to duplicate some of the work that make(1) is designed to do. The Makefile hackery is my fault too, the depend list was incomplete because of some explicit OBJS+= entries, so mkdep wasn't picking up their source file #includes. This closes a pile of /bin/sh PR's, but not all of them.. Submitted by: Steve Price <steve@bonsai.hiwaay.net>, peter
* Added $Id$dg1994-09-241-0/+1
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* BSD 4.4 Lite bin Sourcesrgrimes1994-05-261-0/+127
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