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freebsd-skq/bin/sh
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Jilles Tjoelker ef89d04f13 sh(1): Describe subshell environment, command substitution more correctly. 
POSIX does not require the shell to fork for a subshell environment, and we
use that possibility in various ways (command substitutions with a single
command and most subshells that are the final command of a shell process).
Therefore do not tie subshells to forking in the man page.

Command substitutions with expansions are a bit strange, causing a fork for
$(...$(($x))...) because $x might expand to y=2; they will probably be
changed later but this is how they work now.
2011-03-20 23:52:45 +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: Remove special code for shell scripts without magic number.
2011-02-04 22:47:55 +00:00
alias.h
sh: Remove special code for shell scripts without magic number.
2011-02-04 22:47:55 +00:00
arith_yacc.c
sh: Fix some warnings in code for arithmetic expressions.
2011-03-05 13:27:13 +00:00
arith_yacc.h
sh: Import arithmetic expression code from dash.
2011-02-08 23:18:06 +00:00
arith_yylex.c
Remove unnecessary cast.
2011-03-07 07:31:15 +00:00
arith.h
sh: Import arithmetic expression code from dash.
2011-02-08 23:18:06 +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: Remove special code for shell scripts without magic number.
2011-02-04 22:47:55 +00:00
eval.c
sh: Remove clearcmdentry()'s now unused argument.
2011-02-05 14:08:51 +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: Remove clearcmdentry()'s now unused argument.
2011-02-05 14:08:51 +00:00
exec.h
sh: Remove clearcmdentry()'s now unused argument.
2011-02-05 14:08:51 +00:00
expand.c
Fix typos - remove duplicate "the".
2011-02-21 09:01:34 +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
sh: Remove special code for shell scripts without magic number.
2011-02-04 22:47:55 +00:00
input.c
sh: Remove special code for shell scripts without magic number.
2011-02-04 22:47:55 +00:00
input.h
sh: Constify various strings.
2009-12-24 18:41:14 +00:00
jobs.c
sh: Remove special code for shell scripts without magic number.
2011-02-04 22:47:55 +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
…
main.c
sh: Remove special code for shell scripts without magic number.
2011-02-04 22:47:55 +00:00
main.h
sh: Do not run callers' exception handlers in subshells.
2009-12-25 20:21:35 +00:00
Makefile
sh: Import arithmetic expression code from dash.
2011-02-08 23:18:06 +00:00
memalloc.c
sh: Follow-up to r216743, grabstackblock() can be replaced with stalloc().
2011-01-09 22:47:58 +00:00
memalloc.h
sh: Follow-up to r216743, grabstackblock() can be replaced with stalloc().
2011-01-09 22:47:58 +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: Remove special code for shell scripts without magic number.
2011-02-04 22:47:55 +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
…
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
…
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
…
options.c
sh: Remove special code for shell scripts without magic number.
2011-02-04 22:47:55 +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: Fix some parameter expansion variants ${#...}.
2011-03-13 20:02:39 +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: Remove special code for shell scripts without magic number.
2011-02-04 22:47:55 +00:00
redir.h
…
sh.1
sh(1): Describe subshell environment, command substitution more correctly.
2011-03-20 23:52:45 +00:00
shell.h
sh: Detect dividing the smallest integer by -1.
2011-02-12 23:44:05 +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
sh: Remove special code for shell scripts without magic number.
2011-02-04 22:47:55 +00:00
trap.c
sh: Remove special code for shell scripts without magic number.
2011-02-04 22:47:55 +00:00
trap.h
sh: Make exit without parameters from EXIT trap POSIX-compliant.
2011-01-08 23:08:13 +00:00
var.c
sh: Remove special code for shell scripts without magic number.
2011-02-04 22:47:55 +00:00
var.h
sh: Check readonly status for assignments on regular builtins.
2011-01-01 13:26:18 +00:00