Jilles Tjoelker 11535bdf04 sh: Avoid side effects from builtins in optimized command substitution. ... Change the criterion for builtins to be safe to execute in the same process in optimized command substitution from a blacklist of only cd, . and eval to a whitelist. This avoids clobbering the main shell environment such as by $(exit 4) and $(set -x). The builtins jobid, jobs, times and trap can still show information not available in a child process; this is deliberately permitted. (Changing traps is not.) For some builtins, whether they are safe depends on the arguments passed to them. Some of these are always considered unsafe to keep things simple; this only harms efficiency a little in the rare case they are used alone in a command substitution.		2010-12-30 22:33:55 +00:00
..
bltin	sh: Add kill builtin.	2010-12-21 22:47:34 +00:00
funcs	sh: Update the suspend example for the change of the job control flag	2010-11-13 22:20:46 +00:00
alias.c	sh: Add a function to print warnings (with command name and newline).	2010-12-21 20:47:06 +00:00
alias.h	sh: Constify various strings.	2009-12-24 18:41:14 +00:00
arith_lex.l	sh: arith: Disallow decimal constants starting with 0 (containing 8 or 9).	2010-12-18 23:03:51 +00:00
arith.h	sh: Constify various strings.	2009-12-24 18:41:14 +00:00
arith.y	sh: Use stalloc for arith variable names.	2010-04-25 20:43:19 +00:00
builtins.def	sh: Add kill builtin.	2010-12-21 22:47:34 +00:00
cd.c	sh: Add a function to print warnings (with command name and newline).	2010-12-21 20:47:06 +00:00
cd.h	sh: On startup of the shell, use PWD from the environment if it is valid.	2010-04-17 14:35:46 +00:00
error.c	sh: Add a function to print warnings (with command name and newline).	2010-12-21 20:47:06 +00:00
error.h	sh: Add a function to print warnings (with command name and newline).	2010-12-21 20:47:06 +00:00
eval.c	sh: Avoid side effects from builtins in optimized command substitution.	2010-12-30 22:33:55 +00:00
eval.h	sh: Various warning fixes (from WARNS=6 NO_WERROR=1):	2009-12-27 18:04:05 +00:00
exec.c	sh: Allow arbitrary large numbers in CHECKSTRSPACE.	2010-12-26 13:25:47 +00:00
exec.h	sh: Improve the command builtin:	2010-03-06 16:57:53 +00:00
expand.c	sh: Don't do optimized command substitution if expansions have side effects.	2010-12-28 21:27:08 +00:00
expand.h	sh: Don't do optimized command substitution if expansions have side effects.	2010-12-28 21:27:08 +00:00
histedit.c	sh: Properly restore exception handler in fc.	2010-12-29 19:39:51 +00:00
init.h	Remove clause 3 from the UCB licenses.	2004-04-06 20:06:54 +00:00
input.c	In the spirit of r90111, depend on c89 and remove the "STATIC" macro	2010-10-13 22:18:03 +00:00
input.h	sh: Constify various strings.	2009-12-24 18:41:14 +00:00
jobs.c	sh: Add kill builtin.	2010-12-21 22:47:34 +00:00
jobs.h	sh: Forget about terminated background processes sooner.	2010-06-29 22:37:45 +00:00
mail.c	Consistently use "STATIC" for all functions in order to be able to set	2010-10-13 04:01:01 +00:00
mail.h	Remove clause 3 from the UCB licenses.	2004-04-06 20:06:54 +00:00
main.c	sh: Code size optimizations to buffered output.	2010-11-20 14:14:52 +00:00
main.h	sh: Do not run callers' exception handlers in subshells.	2009-12-25 20:21:35 +00:00
Makefile	sh: Add kill builtin.	2010-12-21 22:47:34 +00:00
memalloc.c	sh: Simplify "stack string" code slightly.	2010-12-27 22:18:27 +00:00
memalloc.h	sh: Simplify "stack string" code slightly.	2010-12-27 22:18:27 +00:00
miscbltin.c	sh: Code size optimizations to "stack string" memory allocation:	2010-11-23 22:17:39 +00:00
mkbuiltins	sh: Various warning fixes (from WARNS=6 NO_WERROR=1):	2009-12-27 18:04:05 +00:00
mkinit.c	sh: Various warning fixes (from WARNS=6 NO_WERROR=1):	2009-12-27 18:04:05 +00:00
mknodes.c	sh: Fix crash with empty functions (f() { }) introduced in r196483	2009-08-28 22:41:25 +00:00
mksyntax.c	sh: Remove the check that alpha/name/in_name chars are not CTL* bytes.	2010-11-20 14:30:28 +00:00
mktokens	/*- or .\"- or #- to begin license clauses.	2005-01-10 08:39:26 +00:00
myhistedit.h	sh: Pass TERM changes to libedit.	2010-06-02 19:16:58 +00:00
mystring.c	sh: Various warning fixes (from WARNS=6 NO_WERROR=1):	2009-12-27 18:04:05 +00:00
mystring.h	Remove clause 3 from the UCB licenses.	2004-04-06 20:06:54 +00:00
nodes.c.pat	In the spirit of r90111, depend on c89 and remove the "STATIC" macro	2010-10-13 22:18:03 +00:00
nodetypes	/*- or .\"- or #- to begin license clauses.	2005-01-10 08:39:26 +00:00
options.c	sh: Code size optimizations to buffered output.	2010-11-20 14:14:52 +00:00
options.h	sh: Various warning fixes (from WARNS=6 NO_WERROR=1):	2009-12-27 18:04:05 +00:00
output.c	sh: Use vsnprintf() rather than crafting our own in fmtstr().	2010-12-11 17:47:27 +00:00
output.h	sh: Code size optimizations to buffered output.	2010-11-20 14:14:52 +00:00
parser.c	sh: Allow arbitrary large numbers in CHECKSTRSPACE.	2010-12-26 13:25:47 +00:00
parser.h	sh: Do IFS splitting on word in ${v+word} and ${v-word}.	2010-10-29 13:42:18 +00:00
redir.c	sh: Check whether dup2 was successful for >&FD and <&FD.	2010-10-24 20:09:49 +00:00
redir.h	Remove clause 3 from the UCB licenses.	2004-04-06 20:06:54 +00:00
sh.1	sh(1): Explain why it is a bad idea to use aliases in scripts.	2010-12-21 22:48:56 +00:00
shell.h	In the spirit of r90111, depend on c89 and remove the "STATIC" macro	2010-10-13 22:18:03 +00:00
show.c	In the spirit of r90111, depend on c89 and remove the "STATIC" macro	2010-10-13 22:18:03 +00:00
show.h	sh: Constify various strings.	2009-12-24 18:41:14 +00:00
TOUR	Correct assorted grammos and typos.	2006-04-16 11:54:01 +00:00
trap.c	sh: Add a function to print warnings (with command name and newline).	2010-12-21 20:47:06 +00:00
trap.h	sh: Add some __dead2 to indicate functions that do not return.	2009-12-24 20:55:14 +00:00
var.c	sh: Code size optimizations to buffered output.	2010-11-20 14:14:52 +00:00
var.h	sh: Pass TERM changes to libedit.	2010-06-02 19:16:58 +00:00