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534 Commits

Author SHA1 Message Date
David Malone
f656dbec97 Use '\033' rather than '\e' as the latter is a gccism. 
PR:             46015
Submitted by:   Jeroen Ruigrok van der Werven <asmodai@wxs.nl>
MFC after:      1 week
 2002-12-22 21:35:14 +00:00
Tom Rhodes
304199ce19 The code uses trapsasync, however the manual page uses asynctraps. Fix the 
manual page to reflect the code.

PR:		45820
Submitted by:	Marco Molteni <molter@tin.it>
Discussed with:	tjr
 2002-12-17 20:27:48 +00:00
Tony Finch
162ae3ae7f Document trap EXIT and trap SIGNAME. 2002-12-17 17:31:44 +00:00
Tim J. Robbins
2e3684f843 When job control is disabled, never show the job id when reporting the 
status of a background process that has terminated because of a signal.
 2002-12-14 01:08:04 +00:00
Ruslan Ermilov
db8993ce9e Capitalize ASCII code names. 
Approved by:	re
 2002-12-05 08:50:00 +00:00
Tim J. Robbins
0cda444bef Delete worthless comments. 2002-10-30 06:34:52 +00:00
Tim J. Robbins
728b72c237 Avoid accidentally making "-h" a synonym for "fc". 
Obtained from:	NetBSD
 2002-10-18 10:33:32 +00:00
Tim J. Robbins
c121fd80b8 Do not strip CTL* escapes from redirection filenames in argstr(); they 
are later stripped with rmescapes() in expandarg(). If the filename has
already been unescaped, doing it again in rmescapes() can walk off the
end of the string, leading to memory corruption and eventually SIGSEGV.

Noticed by:	kris
 2002-10-08 11:22:49 +00:00
Tim J. Robbins
427748f7df Disallow empty condition parts of "if", "while" and "until" compound 
commands. Commands like "if then ... fi" and "while do ... done" are no
longer accepted. Bodies of compound commands are still allowed to be
empty, because even though POSIX does not allow them, most shells do.
 2002-10-06 06:35:51 +00:00
Tim J. Robbins
54beeb39c2 Use %d in a printf() format string and cast the argument to int instead of 
using %td when we know that the number is between 0 and 9; mksyntax is a
build tool and needs to work on -stable.
 2002-10-02 09:57:54 +00:00
Tim J. Robbins
658a755b6a Back out experimental changes to fmtstr() that I didn't mean to include 
in the previous commit.
 2002-10-01 13:41:13 +00:00
Tim J. Robbins
7e73d40ee5 Replace a home-grown printf() clone with a fwopen() wrapper around 
libc's vfprintf() that writes to a `struct output' instead of a file.
Inspired by NetBSD's similar changes (they used asprintf() instead).
 2002-10-01 13:22:12 +00:00
Maxime Henrion
ca5434bae6 It is now safe to remove WARNS=0 and WFORMAT=0. 
Tested on:	alpha, i386, sparc64
 2002-10-01 12:12:45 +00:00
Tim J. Robbins
8c39572997 Restore "not found" error message when searching for (or executing) 
a program fails because the file or a path component does not exist.

Suggested by:	bde
 2002-10-01 11:48:18 +00:00
Maxime Henrion
0c1661b754 - Don't use quad_t when we really mean rlim_t. 
- Cast rlim_t to intmax_t when printing it.

This should fix the last format errors in sh(1).

Tested on:	i386, sparc64
 2002-10-01 11:44:38 +00:00
Tim J. Robbins
fce40e6ec6 Add back WARNS=0 and WFORMAT=0; gcc is finding nonexistent format string 
errors with %qd formats.
 2002-10-01 08:55:28 +00:00
Maxime Henrion
ec65e9977a Use the %t format modifier to print differences between 
pointers.  This fixes two format warnings on 64 bits
archs which are fatal now that WFORMAT=0 has been removed.

It doesn't fully fix the sh(1) build on 64 bits platforms
though, there is still some quad_t issues that need to be
fixed.

Tested on:	i386, sparc64
 2002-10-01 08:40:07 +00:00
Tim J. Robbins
b7f23f5be5 Remove WARNS=0 and WFORMAT=0. The shell compiles cleanly at WARNS=2 
on at least i386. If there are warnings on other archs, I'd rather hear
about them than pretend they didn't exist.
 2002-10-01 07:26:35 +00:00
Tim J. Robbins
c515abc535 Remove some kind of profiling support that required the 4.2BSD monitor() 
function in libc.
 2002-10-01 01:30:33 +00:00
Tim J. Robbins
b1a667509b Remove bits and pieces of support for atty, which was made obsolete by 
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.
 2002-10-01 00:54:14 +00:00
Tim J. Robbins
abe2dc6158 Callers of error() don't need to supply a program name prefix in the 
error message. Stops ulimit giving error messages like "ulimit: ulimit: xyz".
 2002-09-30 13:29:32 +00:00
Tim J. Robbins
f7a9b7fe3a Allow a left parenthesis before patterns in case blocks. POSIX requires 
us to accept this, but I've never seen a script that uses it.
 2002-09-30 13:25:00 +00:00
Tim J. Robbins
e00e16ad7f Allow empty case/esac statements; POSIX requires this, and recent versions 
of autoconf are generating scripts that use this feature.

PR:		43275 35879
Submitted by:	Dan Nelson <dnelson@allantgroup.com>
 2002-09-30 10:57:44 +00:00
Tim J. Robbins
9a7cafd9b8 Remove dead code which supported systems without O_APPEND, O_CREAT or SIGTSTP. 2002-09-29 12:38:25 +00:00
Tim J. Robbins
1c59560de9 Convert the remaining callers of errmsg() to use strerror(), and remove 
errmsg() and its table of error messages.
 2002-09-29 11:37:39 +00:00
Jacques Vidrine
dde97b32ff Correct a usage of fnctl that could not be right and results in a 
no-op.  I assume it was meant that the close-on-exec flag be set here.
 2002-09-11 16:38:33 +00:00
Giorgos Keramidas
d1d578b2cd Add <stdlib.h> to get a prototype for exit(). 
Reviewed by:	tjr
 2002-08-29 14:26:49 +00:00
Philippe Charnier
0d9f1a69d8 Replace various spellings with FALLTHROUGH which is lint()able 2002-08-25 13:01:47 +00:00
Tim J. Robbins
df9e587beb There is a built-in command called "builtin"; spell its name correctly 
after rev. 1.77 called it "built-in".
 2002-08-24 12:41:23 +00:00
Tim J. Robbins
488edd5bd3 Don't show the process ID of background jobs that have terminated, 
for consistency with ksh.
 2002-08-24 07:19:01 +00:00
Tom Rhodes
7d971bbf29 s/filesystem/file system/ as discussed on -developers 2002-08-21 17:32:44 +00:00
Jens Schweikhardt
8eed22b1a6 Fix a few typos, among them s/builtin/built-in/ (except for the ref 
to the builtin(1) man page.) This is for consistency with the spelling
both proposed by ispell as well as IEEE Std 1003.1-2001.

MFC after:	3 days
 2002-08-21 15:05:55 +00:00
Tim J. Robbins
4f8fa749f0 Avoid accessing the current job's process table in the child part of 
forkshell() after it has been freed. This caused mysterious behaviour
when anything but the first command in a pipeline tried to access the
terminal when the `junk' malloc() option was enabled (which is the default).
 2002-08-18 06:43:44 +00:00
Tim J. Robbins
6c56d93528 Show job control ID, command text, etc. when foreground processes are 
suspended. This is a followup to rev. 1.51.

MFC after:	1 week
 2002-08-17 13:57:47 +00:00
Tim J. Robbins
d8d737d751 Allow redirections by themselves between "&&" and "||" operators. 
For example, >/dev/null && echo foo

Pointed out by:	FUJISHIMA Satsuki
MFC after:	1 week
 2002-08-11 03:04:23 +00:00
Ruslan Ermilov
9ba31ca074 mdoc(7) police: tidying. 2002-08-09 10:59:20 +00:00
Tim J. Robbins
7e1975c2b2 Add a -P/-o physical option which behaves similarly to bash/ksh's options 
by the same name. This option makes the cd and pwd builtins behave physically
(as opposed to logically) by default.

Submitted by:	fanf
 2002-07-25 10:57:39 +00:00
Tim J. Robbins
050f7913c9 Set opterr to zero to avoid duplicate warnings from getopt(3) for unknown 
options.
 2002-07-25 10:47:38 +00:00
Tim J. Robbins
93c0dc5ea6 Use PATH_MAX instead of a local guess at it, which happened to be incorrect. 
Suggested by:	fanf
 2002-07-25 09:56:08 +00:00
Tim J. Robbins
b5ae692823 pwdcmd()'s argc and argv arguments are no longer unused, remove __unused. 
Pointed out by:	fanf
 2002-07-25 09:46:31 +00:00
Tim J. Robbins
be58cc483e Avoid calling el_resize() from a signal handler, even though libedit 
itself does that if you set EL_SIGNAL. Instead, set a flag and check it
before calling el_gets(). This is safer, but slower to respond to changes.

Pointed out by:	mp
 2002-07-24 02:06:07 +00:00
Tim J. Robbins
9de7305e58 Catch SIGWINCH in interactive shells and call el_resize() to update 
libedit's idea of the window size.
 2002-07-23 15:05:00 +00:00
Tim J. Robbins
ecd807fb6d Call el_source() to read the contents of .editrc when line editing is enabled. 
Obtained from:	NetBSD
MFC after:	2 weeks
 2002-07-23 12:26:34 +00:00
Tim J. Robbins
088acf9001 Add a `bind' builtin command, which is simply a wrapper around libedit's 
builtin command of the same name. This allows the key bindings for the
shell's line editor to be changed.

MFC after:	2 weeks
 2002-07-23 11:50:53 +00:00
Tim J. Robbins
776600e6de Don't allow "||" or "&&" to be the first tokens of a command. 
PR:		40386
MFC after:	2 weeks
 2002-07-22 05:50:12 +00:00
Tim J. Robbins
2babaf74b5 Implement the P1003.2 `command' builtin command, which is used to suppress 
shell function and alias lookup. The -p option has been implemented, the
UPE -v and -V options have not. The old `command' command has been renamed
to `builtin'.
 2002-07-21 06:49:14 +00:00
Tim J. Robbins
558175ca15 Document that only one of the -n and -e options may be specified for 
sh(1)'s echo(1) builtin command.

PR:		32935, 40747
MFC after:	1 week
 2002-07-20 04:39:23 +00:00
Tim J. Robbins
2628ebdbd1 Remove broken and incomplete support for old releases of System V, 
don't support system that implement getcwd(3) with a pipe to /bin/pwd.
 2002-07-19 08:09:04 +00:00
Tim J. Robbins
5b99fa0514 Don't assume file descriptors fit in a short, use an int instead. 2002-07-18 12:24:35 +00:00
Tim J. Robbins
b80be28218 Avoid using ints or shorts to store process id's, use pid_t instead. 
The pgrp member of struct job was declared as a short and could not store
every possible process group ID value, the rest of them were benign because
pid_t happens to be an int.
 2002-07-18 10:22:42 +00:00
Tim J. Robbins
f1ae2c66c8 Make the message that is printed when the foreground process is terminated 
by a signal the same as pdksh/bash/sh before rev. 1.34.
 2002-07-18 09:37:51 +00:00
Tim J. Robbins
6c8bbe749e Don't assume the shell's controlling terminal is attached to file descriptor 
2. Instead, open /dev/tty. This problem stopped commands in subshells from
being executed correctly if standard error was redirected.

PR:		36671
Obtained from:	NetBSD (but simplified)
 2002-07-11 06:42:11 +00:00
Tim J. Robbins
17f08ec1bc Remove support for the "old" tty driver by unifdef -UOLD_TTY_DRIVER; 
many other parts of the shell are no longer compatible with this, and it
makes jobs.c quite cluttered with #ifdef's.
 2002-07-11 06:26:48 +00:00
Tim J. Robbins
0d3d4c12c3 When growing the job table, don't relocate the jobmru pointer if it's NULL. 2002-07-11 04:22:41 +00:00
Tim J. Robbins
ce80ed021f Close file descriptors when [n]>&- and [n]<&- redirections are used. 
This was broken by rev. 1.16.

PR:		40334
MFC after:	1 week
 2002-07-09 08:55:46 +00:00
Tim J. Robbins
907354479f Print out commands with NTOFD/NFROMFD redirections that close the 
descriptors (">&-" or similar) correctly in the jobs(1) command.
 2002-07-09 03:26:47 +00:00
Matthew Dillon
2d41ef4b59 Fix type-o in last commit in preparation for MFC. 2002-07-02 19:06:33 +00:00
David E. O'Brien
2749b14129 Consistently use FBSDID 2002-06-30 05:15:05 +00:00
Sheldon Hearn
62df9b6286 Document addition of RLIMIT_VMEM support, added in rev 1.26 of miscbltin.c. 2002-06-27 16:56:45 +00:00
Matthew Dillon
085b9f3eb2 Add support for RLIMIT_VMEM. The #ifdef's were already there but getopt() 
needed to be adjusted.
 2002-06-26 00:29:53 +00:00
Juli Mallett
4e17884ffe Remove two unused variables. 2002-06-20 05:21:43 +00:00
Juli Mallett
8b7808bc49 Minor const cleanup. 
Don't discard qualifiers we don't need to discard.
 2002-06-20 05:20:50 +00:00
Tim J. Robbins
029c8ee4fa Bring documentation on CDPATH and its effects on cd(1) back into sync with 
reality (and POSIX): current directory isn't searched unless CDPATH has
a "." element or is unset.

PR:		38442
Submitted by:	oleg dashevskii <be9@be9.ru>
MFC after:	1 week
 2002-06-19 12:04:22 +00:00
Tim J. Robbins
83952a118b Don't list shell builtins when the hash command is used (SUSv3) 2002-06-13 07:50:50 +00:00
Tim J. Robbins
8b34ad92a2 Document the -f and -v options of the unset builtin. 2002-06-06 04:12:50 +00:00
Tim J. Robbins
592588448e Quote the output of the no-argument form of the `set' builtin for re-input 
to the shell.
 2002-06-06 04:02:50 +00:00
Tim J. Robbins
45086f8cf6 Add the SUSv3 -p ("portable") option to both the export and readonly 
builtins. This makes export/readonly print lines in the form
"export name=value".
 2002-06-06 03:57:22 +00:00
Tim J. Robbins
dee75cf75d Don't modify output that is to be quoted if it contains no IFS characters 
or shell metacharacters.
 2002-06-06 03:29:23 +00:00
Tim J. Robbins
5b96a60711 Display job status correctly when a pipeline is suspended. 2002-06-04 15:26:00 +00:00
Tim J. Robbins
5179c2f25f Describe finished jobs as "Done", not "Exit" (SUSv3) 2002-06-04 14:40:33 +00:00
Tim J. Robbins
cb1a4fb419 Don't output state' and current' fields for processes that aren't 
leaders in -l option to jobs(1).
 2002-06-04 14:37:13 +00:00
Tim J. Robbins
d982b3a5f6 Missing prototypes from previous commit. 2002-06-04 13:13:54 +00:00
Tim J. Robbins
41d09fe083 Correct minor spacing problem in output of jobs -l for pipelines. 2002-06-04 13:01:51 +00:00
Tim J. Robbins
e5341cbb17 Quote alias values in the output of the alias(1) builtin so they are 
suitable for re-input to the shell (SUSv3)
 2002-06-04 12:59:12 +00:00
Tim J. Robbins
ee6712f2f9 Fix typo causing ``fc -e'' to not work correctly. getopt() sets optarg, 
not shoptarg.
 2002-06-02 08:34:09 +00:00
Tim J. Robbins
32c077867c Adding an entry to the history with H_ENTER moves libedit's internal 
history cursor. Reset the cursor after adding the entry to the history
when doing ``fc -s'' so the output is correct.
 2002-06-02 08:27:04 +00:00
Tim J. Robbins
39dccc6f6d Implement $PPID, the parent process ID of the shell. 2002-06-01 02:14:48 +00:00
Tim J. Robbins
f63d6dbfc9 Support the remaining job ID formats required by SUSv3: 
%+ (current job, same as %%),
%- (previous job),
%?str (job with "str" in its command name).
 2002-06-01 01:51:42 +00:00
Tim J. Robbins
ad8a075902 Add -s (output PID's only) and -l (show PID's) options to the jobs(1) 
builtin. Modify the output format to match what SUSv3 requires.
 2002-05-31 14:04:23 +00:00
Tim J. Robbins
bdfc15df5e #if JOBS around a job control-related statement to allow compilation with 
job control disabled.
 2002-05-31 13:10:38 +00:00
Tim J. Robbins
e3f3094912 Break the code to display status info for one job out from showjobs() into 
showjob(), use it inside dowait() to display status info for consistency,
and in a format closer to what the standard requires.
 2002-05-31 13:07:05 +00:00
Tim J. Robbins
3771ef59ae Move job to front of most recently used job list when bg'd or fg'd. 2002-05-31 12:35:34 +00:00
Tim J. Robbins
d86825beb8 Instead of keeping just the jobid of the most recently bg'd or fg'd job, 
keep a linked list of the jobs, most recently used first. This is required
to support the idea of `previous job', and to allow the jobs fg and bg
default to be correct according to POSIX.
 2002-05-31 12:31:23 +00:00
Ruslan Ermilov
81e9cda2c9 mdoc(7) police: tidy up the markup a bit. 2002-05-29 15:38:59 +00:00
Tim J. Robbins
fc482908be sh appeared in Version 1, not System V.1. 2002-05-25 12:18:27 +00:00
Tim J. Robbins
d513af6a66 Implement `set +o', which displays the currently set options in a format 
suitable for re-input into the shell.
 2002-05-25 12:11:58 +00:00
Tim J. Robbins
09086b0499 Bring back the cd -L and -P options from revision 1.24, but try harder not 
to fail when the logical current directory no longer exists. Allow changes
to absolute paths when logical cwd is invalid, fall back to physical cd
if logical cd fails.
 2002-05-22 05:15:53 +00:00
Tim J. Robbins
baf3e7c14b Temporarily back out revision 1.24; it seems to handle the case where the 
current directory no longer exists incorrectly and breaks `make cleandir'.
 2002-05-22 03:29:20 +00:00
Tim J. Robbins
178897f127 Add the SUSv3 -L and -P options to the cd and pwd builtin utilities. `Logical' 
handling of .. is now the default.
 2002-05-20 07:54:39 +00:00
Juli Mallett
9e3bfadea8 Remove a small, annoying, nit I ran in to editing this file, a lone tab 
on a line by itself.
 2002-05-19 17:50:23 +00:00
Tim J. Robbins
1b5a48ff88 Implement the -u (-o nounset) option, which gives an error message if 
an unset variable is expanded.

Obtained from:	NetBSD (bjh21, christos)
 2002-05-19 08:30:16 +00:00
Tim J. Robbins
addcdbb29f Make the fg and bg commands give the output required by SUSv3. 
fg outputs the name of the command, bg outputs the name of the command
and the job id.
 2002-05-19 07:27:26 +00:00
Tim J. Robbins
1a958c6653 Implement the -C (-o noclobber) option, which prevents existing regular 
files from being overwritten by shell redirection.
 2002-05-19 06:03:05 +00:00
Tom Rhodes
ebd4324457 Consistancy check s/file system/filesystem/ 
Reviewed by:	brian
 2002-05-16 01:57:20 +00:00
Dag-Erling Smørgrav
d397408818 Usage style sweep: spell "usage" with a small 'u'. 
Also change one case of blatant __progname abuse (several more remain)
This commit does not touch anything in src/{contrib,crypto,gnu}/.
 2002-04-22 13:44:47 +00:00
Philippe Charnier
e004acc891 Use `The .Nm utility' 2002-04-16 20:08:06 +00:00
George C A Reid
4c7e4a544a Stop a null pointer dereference in the builtin hash function. 
PR:		36141
Approved by:	cracauer
MFC after:	1 week
 2002-04-15 15:49:30 +00:00
Warner Losh
1a24391866 Remove now-obsolete __STDC__ ifdefs, remove redundant NULL definition and 
include stdlib.h for NULL.
 2002-02-18 06:08:23 +00:00
Kris Kennaway
afe781faa2 Lock down with WFORMAT=1 except those directories with unfixed warnings. 
Tested on i386 and alpha.
 2002-02-04 02:49:19 +00:00
Warner Losh
90e41fc40a %.* takes an int, not a size_t. 2002-02-02 07:06:58 +00:00
Warner Losh
5134c3f799 o __P has been reoved 
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)
	{
	...
 2002-02-02 06:50:57 +00:00
Sergey Babkin
63f901ef53 The fix for >/dev/stdout, including Tor Egge's fix for the bug in the 
original attempt of the fix. And yes, this time I've tried to build
world with it and it succeeded.

Submitted by:	Tor Egge
MFC after: 1 week
 2002-01-13 14:37:40 +00:00
Alfred Perlstein
8f5c93f79f backout rev 1.14, it's breaking things. 2001-12-24 22:27:04 +00:00
Sergey Babkin
41f1be05da Added ability to do ">/dev/stdout". The apsfilter people are anxious 
to get it MFCed in time for release 4.5.

MFC after: 2 weeks
 2001-12-22 02:40:58 +00:00
David E. O'Brien
a748290789 Default to WARNS=2. Binary builds that cannot handle this must explicitly 
set WARNS=0.

Reviewed by:	mike
 2001-12-04 01:57:47 +00:00
Akinori MUSHA
018d9f6237 Remove the printf builtin command from sh(1), which command is not 
used so often that it's worth keeping it as a builtin.

Now that all the printf invocations from within the system startup
scripts, we can safely remove it.

Urged by:	sheldonh  :)

No MFC is planned so far because it may break compatibility and
violate POLA.
 2001-11-20 18:33:59 +00:00
Akinori MUSHA
d90c5c4ab4 Make test(1) a builtin command of our sh(1) for efficiency. The 
binary size increase is 3,784 bytes (about 0.6%).

I don't drop the printf builtin while I'm here because some /etc/rc.*
scripts seem to use it before mounting /usr where printf(1) resides.

Reviewed by:	arch (sheldonh)
Inspired by:	NetBSD, ksh
Clued by:	ume (on how the printf builtin is used)
 2001-11-17 19:10:11 +00:00
Tor Egge
f14c1c47f9 Don't call setvar() with the VTEXTFIXED flag. A copy is created by 
setvar() and passed to setvareq(). When the VTEXTFIXED flag is set,
that copy is never freed, causing a memory leak.

PR:		31533
Submitted by:	maxim@macomnet.ru
 2001-11-07 23:00:05 +00:00
Tor Egge
c4c8394066 Repair normally unused is_digit() macro. 2001-10-14 21:11:33 +00:00
David E. O'Brien
757eeda04b *** empty log message *** 2001-10-01 08:43:58 +00:00
Tor Egge
d2653b8806 Don't check uninitialized memory for having the shell control character 
value CTLARI since this might break expansion of arithmetic expressions.

Don't access memory below start of stackblock.

Problem analyzed by hunt@iprg.nokia.com, slightly different patch applied.

PR:		24443
Submitted by:	hunt@iprg.nokia.com
 2001-09-19 20:16:38 +00:00
Tor Egge
0c4eedda7b BASESYNTAX, DQSYNTAX, SQSYNTAX and ARISYNTAX handles negative indexes. 
Allow those to be used to properly quote characters in the shell
control character range.
 2001-09-19 20:07:47 +00:00
Tor Egge
5f2359b374 Adjust some type checks to include CTLQUOTEMARK in the range of 
shell control characters.
 2001-09-19 19:58:09 +00:00
Peter Wemm
ef15bfc59f Initialize infp at main() 2001-08-13 21:55:04 +00:00
Ruslan Ermilov
8af1452cf8 Removed duplicate VCS ID tags, as per style(9). 2001-08-13 14:06:34 +00:00
Sheldon Hearn
42abf713c9 can not -> cannot 2001-08-08 18:32:06 +00:00
Ruslan Ermilov
c4d9468ea0 mdoc(7) police: 
Avoid using parenthesis enclosure macros (.Pq and .Po/.Pc) with plain text.
Not only this slows down the mdoc(7) processing significantly, but it also
has an undesired (in this case) effect of disabling hyphenation within the
entire enclosed block.
 2001-08-07 15:48:51 +00:00
Sheldon Hearn
e1b4d8d074 Use STD{ERR,IN,OUT}_FILENO instead of their numeric values. The 
definitions are more readable, and it's possible that they're
more portable to pathalogical platforms.

Submitted by:   David Hill <david@phobia.ms>
 2001-07-26 11:02:39 +00:00
Sheldon Hearn
71337c33bd Break the list of parameter expansions into two lists so that 
the paragraph introducing the prefix and suffix pattern expansions
does not appear as part of the explanation for the string length
expansion.
 2001-07-23 10:18:05 +00:00
Dima Dorfman
7ebcc426ef Remove whitespace at EOL. 2001-07-15 07:53:42 +00:00
Ruslan Ermilov
caa2db3be9 mdoc(7) police: removed HISTORY info from the .Os call. 2001-07-10 10:04:09 +00:00
Ruslan Ermilov
5521ff5a4d mdoc(7) police: sort SEE ALSO xrefs (sort -b -f +2 -3 +1 -2). 2001-07-06 16:46:48 +00:00
David Malone
b82561452f Use the correct printf format to print a long. 
Approved by:	cracauer
 2001-06-26 11:11:30 +00:00
Dima Dorfman
cafefe8c1b Include missing header files which define functions for which gcc has 
builtins (e.g., exit, strcmp).
 2001-06-24 23:04:23 +00:00
Dima Dorfman
a910f192bb Remove duplicate words. 2001-06-24 01:34:38 +00:00
Dag-Erling Smørgrav
26f6b0fbe8 Add more headers that are required with -fno-builtin (stdlib and strings) 2001-06-19 15:41:57 +00:00
Garance A Drosehn
0a315e79df Fix how /bin/sh handles 'for' and 'case' statements when it is called to do 
errexit (-e) processing.  This solves a problem where 'make clean' would
fail with an unspecified error in certain automake-generated makefiles.

Reviewed by:	no objections from -hackers...
MFC after:	2 weeks
 2001-06-01 00:07:09 +00:00
Warner Losh
92e331afed Use PATH_MAX in preference in MAXPATHLEN. 2001-05-30 03:37:28 +00:00
Dima Dorfman
9434a1c780 Document "chdir" builtin. 2001-04-28 02:13:58 +00:00
Kris Kennaway
a2e73040f4 -Wnon-const-format sweep: make format strings const char *'s, add 
__printflike()/__printf0like() to function prototypes, as appropriate.

Reviewed by:	bde, -audit
 2001-04-17 07:46:38 +00:00
Brian Somers
b785bd7d3b `|'' should be more binding than `!'' so that this isn't broken: 
if ! echo bla | wc -c ; then
		echo broken
	fi

Obtained from: NetBSD
 2001-04-09 12:46:19 +00:00
Brian Somers
6c0bde79a8 A much better (more correct) fix for handling ``!'' characters 
Obtained from: NetBSD
 2001-04-04 10:11:43 +00:00
Brian Somers
51a9b1c281 Handle ``!'' characters when they appear as second and subsequent 
parts of an && or || expression.

This makes this expression work as expected:

	if true && ! false; then echo yes; fi
 2001-04-04 09:30:50 +00:00
Martin Cracauer
adce2a1b4b Fix child's SIGSTOP behaviour in scripts. 
When a child is receiving SIGSTOP, eval continues with the next
command.  While that is correct for the interactive case (Control-Z
and you get the prompt back), it is wrong for a shellscript, which
just continues with the next command, never again waiting for the
stopped child.  Noted when childs from cronjobs were stopped, just to
make more processes (by wosch).

The fix is not to return from a job wait when the wait returned for a
stopped child while in non-interactive mode.  This bahaviour seems to
be what bash2 and ksh implement.  I tested for correct behaviour for
finnaly killing the child with and without forgrounding it first.
When not foregrouding before killing, the shell continues with the
script, which is what the other shells do as well.

Reviewed by:	Silence on -current
 2001-02-06 10:29:34 +00:00
Ruslan Ermilov
d0353b836e mdoc(7) police: split punctuation characters + misc fixes. 2001-02-01 16:38:02 +00:00
Ruslan Ermilov
32f6256a49 Prepare for mdoc(7)NG. 2001-01-16 09:08:22 +00:00
Ruslan Ermilov
1586940ea5 Prepare for mdoc(7)NG. 2000-12-18 14:48:17 +00:00
Ruslan Ermilov
12e720d78b Prepare for mdoc(7)NG. 2000-12-15 17:37:31 +00:00
David E. O'Brien
1a37aa566b Add `_PATH_DEVZERO'. 
Use _PATH_* where where possible.
 2000-12-09 09:35:55 +00:00
Ruslan Ermilov
b4f0f4aa81 mdoc(7) police: Er macro usage cleanup. 2000-11-22 15:55:01 +00:00
Kris Kennaway
c8b46b3ee3 Use secure temporary filenames during build. 
Audited by:	markm, cracauer
 2000-11-22 11:05:51 +00:00
Brian Somers
4682f420f2 Implement the <> redirection operator. 2000-10-03 23:13:14 +00:00
Martin Cracauer
b5803eae6a Disable part of my 8-bits fixes from December 1999. 
Serious fix still needed, see discussion on -current
(Subject: /bin/sh dumps core with here-document of 8bit text)

Problem in this code originally spotted by
Jun Kuriyama <kuriyama@FreeBSD.org>
 2000-08-16 12:23:57 +00:00
Martin Cracauer
d753a42598 Fix type builtin for absolute paths and relative paths with directory 
names in them.

Also use a colon in the answer of `type` everytime the questioned item
is not usable.

PR:		bin/20567
 2000-08-16 12:08:02 +00:00
Martin Cracauer
84c3800cdc From submitter: 
growstackblock() sometimes relocates a stack_block considered empty
without properly relocating stack marks referencing that block.
The first call to popstackmark() with the unrelocated stack mark
as argument then causes sh to abort.

Relocating the relevant stack marks seems to solve this problem.

The patch changes the semantics of popstackmark() somewhat.  It can
only be called once after a call to setstackmark(), thus cmdloop() in
main.c needs an extra call to setstackmark().

PR:		bin/19983
Submitted by:	Tor.Egge@fast.no
Reviewed by:	Gerald Pfeifer <pfeifer@dbai.tuwien.ac.at>
 2000-08-16 10:39:43 +00:00
Sheldon Hearn
1b9735e6f2 Mark up the -a flag to unalias as a flag (Fl), not an argument (Ar). 2000-07-24 15:02:04 +00:00
Sheldon Hearn
5d3b843b57 Add missing punctuation to one line. 2000-07-24 14:59:50 +00:00
Mark Ovens
501e74b7ca Document the builtin echo command 
Reviewed by:	Matthew Hunt <mph@astro.caltech.edu>
 2000-07-17 23:37:55 +00:00
SADA Kenji
410fb0acaa Fixd with alias missing. 
PR:		bin/19475
Approved by:	Martin Cracauer <cracauer@cons.org> (with conditions)
 2000-07-15 14:34:37 +00:00
Matthew Hunt
a585d13451 Add \a and \e to "echo -e" escape handling. 2000-06-26 22:43:30 +00:00
Martin Cracauer
98e05fd3ef Fix parsing of string for eval command. 
PR:		18447
Submitted by:	Koji Mori <mori@tri.asanuma.co.jp>
 2000-05-15 13:02:07 +00:00
Martin Cracauer
b2acf8878e Fix environment passung to eval'ed commands. 
PR:		bin/6577
Submitted by:	Anatoly Vorobey <mellon@pobox.com>
Approved by:	silence amoung other sh experts
 2000-05-15 12:33:17 +00:00
Martin Cracauer
d62ec71c31 Rename the trace() function (that is build only in the -DDEBUG=2 
case), so that it doesn't clash with the ncurses function of the same
name when linking statically with -ltermcap.

The linker only complains when -static is used, and it is not clear
whether this is a bug.

PR:		bin/18104
Submitted by:	Anatoly Vorobey <mellon@pobox.com>
 2000-04-20 11:39:11 +00:00
Martin Cracauer
e988388eff Include <errno.h> when compiling with -DDEBUG=2 
PR:		bin/18104
Submitted by:	mellon@pobox.com
 2000-04-20 09:55:57 +00:00
Martin Cracauer
f01e3d0cfe Fix warnings, some of them serious because sh violated name 
spaces reserved by the header files it includes.

mkinit.c still produces C code with redundant declarations, although
they are more harmless since they automatically derived from the right
places.
 2000-04-20 09:49:16 +00:00
Warner Losh
fba0ed115e Use #include <errno.h> rather than extern int errno;. 2000-04-14 06:03:39 +00:00
Martin Cracauer
c11e75cfcf Fix ${#varname} (getting length of string) when in double-quotes. 
Approved-by:	jkh

PR:		bin/12137
Submitted by:	"Danny J. Zerkel" <dzerkel@columbus.rr.com>
 2000-02-15 08:00:11 +00:00
Martin Cracauer
a436dc79f5 Fix command hash handling on 
PATH=... command

Noted by and fix works for Marcel Moolenaar <marcel@scc.nl>
 1999-12-20 13:42:59 +00:00
Martin Cracauer
2dde9ce37a Second part of 8-bit fixes. 1999-12-16 12:03:46 +00:00
Martin Cracauer
3652a236fa Document ulimit -b for RLIMIT_SBSIZE. 1999-12-15 16:12:32 +00:00
Martin Cracauer
73f612b50d First round of 8-bit fixes. 1999-12-15 11:46:32 +00:00
Martin Cracauer
671356079b make '|' character visible. 
PR:		docs/15265
Submitted by:	takamune@avrl.mei.co.jp
 1999-12-05 12:13:54 +00:00
Martin Cracauer
e92feeebb1 Fix "subscript has type `char'" warnings by casting to int, as 
discussed on -arch.
 1999-12-04 17:12:47 +00:00
Martin Cracauer
6c48b6cf75 Include strerror(errno) in error messages after failed system calls. 
Fix a warning.
 1999-11-29 19:11:01 +00:00
Sheldon Hearn
e918fc8f72 Follow-up on mdoc fixes in rev 1.35; this includes things that I missed 
in that revision as well as things I broke in that revision.  A note-
worthy instance of the latter case was the inversion of -E and -V in the
subsection on Commandline Editing.
 1999-11-18 08:13:21 +00:00
Martin Cracauer
6d9efc2432 The pipleline problem introduced in version 1.22 wasn't fully fixed in 
1.23. This revision should work for long pipes both in
here-documents/backquote and in normal cases.

Fix works for jmz, bde.
 1999-11-17 16:53:34 +00:00
Sheldon Hearn
150c3a33b9 Don't call bash(1) a Korn shell clone. Instead, use pdksh(1) as an 
example of such a clone.

PR:		14601
Submitted by:	Matthias Buelow <mkb@altair.mayn.de>
 1999-11-10 13:27:54 +00:00
Steve Price
6edf2a5be8 Correct logic from previous commit - middle processes in long pipes 
don't have their stdin closed indisciminantly.

Reviewed by:	markm
 1999-11-07 17:07:05 +00:00
Martin Cracauer
74eeb719fd When a backquote command inside a here-document had a pipe with more 
than two processes (got that? :-), the stdin fd of the middle
processes that has just been set up was accidetially closed. Don't do
this.

PR:		bin/14527
 1999-11-05 12:06:30 +00:00
Martin Cracauer
905f2e447b Fix ';' command when used with -e flag. 
PR:		bin/14509
 1999-10-26 13:17:18 +00:00
Brian Feldman
7cde774d15 Implement ulimit -b for RLIMIT_SBSIZE. 1999-10-09 20:56:06 +00:00
Sheldon Hearn
49e11e3a66 Mdoc cleanup, with a few grammar cleanups on the side. 
Reviewed by:	mpp
 1999-10-07 13:56:43 +00:00
Sheldon Hearn
e6d3cf2648 Correct some hard sentence breaks. Only those surrounding the previous 
commit and those which cause ugly nroff output have been fixed, since
the purpose of the style guideline which they contravene is to reduce
the sizes of deltas.

Reported by:	bde
 1999-09-14 11:46:04 +00:00
Sheldon Hearn
c644db6aa2 Improve shell documentation: 
* Consistently misspell built-in as builtin.

* Add a builtin(1) manpage and create builtin(1) MLINKS for all shell
  builtin commands for which no standalone utility exists.  These MLINKS
  replace those that were created for csh(1).

* Add appropriate xrefs for builtin(1) to the csh(1) and sh(1) manpages,
  as well as to the manpages of standalone utilities which are supported
  as shell builtin commands in at least one of the shells. In such
  manpages, explain that similar functionality may be provided as a
  shell builtin command.

* Improve sh(1)'s description of the cd builtin command. Csh(1) already
  describes it adequately. Replace the cd(1) manpage with a builtin(1)
  MLINKS link.

* Clean up some mdoc problems: use Xr instead of literal "foo(n)"; use
  Ic instead of Xr for shell builtin commands.

* Undo English contractions.

Reviewed by:	mpp, rgrimes
 1999-09-08 15:40:46 +00:00
Sheldon Hearn
ccbd308159 Revert to using .Xr for builtins. The cross-references don't work now, 
but that doesn't mean that they will never work.

Requested by:	mpp, rgrimes
 1999-08-31 12:44:52 +00:00
Sheldon Hearn
6b15476ec9 Clean-up: 
Fix grammar and spelling nits.
	Use .Dq and .Qq where appropriate.
	Divorce trailing punctuation from quoted elements.
	Use .Dq instead of .Xr for builtins.
	Remove trailing whitespace and blank lines.

PR:	13340
 1999-08-30 10:13:04 +00:00
Peter Wemm
2a4562393f $Id$ -> $FreeBSD$ 1999-08-27 23:15:48 +00:00
Thomas Gellekum
8f0561cc42 Make the behaviour of `read -e', ie. treating backslashes as special, 
the default. Add -r option for the read builtin to reverse this.

PR:		13274
Reviewed by:	cpiazza, hoek, sheldonh
 1999-08-26 08:16:27 +00:00
Sheldon Hearn
58aa6f74a2 Fix handling of the cd command inside evaluations. It was changing PWD, 
which it should not do.

PR:	12578
Reported by:	Gerald Pfeifer <pfeifer@dbai.tuwien.ac.at>
Submitted by:	Niall Smart <niall@pobox.com>
 1999-07-19 11:00:33 +00:00
Kris Kennaway
46be34b902 Various spelling/formatting changes. 
Submitted by: Philippe Charnier <charnier@xp11.frmug.org>
 1999-05-08 10:22:15 +00:00
Warner Losh
426e9c1dcc First set of fixes to keep egcs happy. These include {} around single 
statement if blocks[*] when the else could be ambiguous, not defaulting
to int type and removal of some unused variables.

[*] This is explicitly allowed by style(9) when the single statement
spans more than one line.

Reviewed by: obrien, chuckr
 1999-04-25 21:13:34 +00:00
Martin Cracauer
57b2932a14 Next approach to make loops in interactive interruptable. 
PR:		bin/9173
 1999-04-21 11:52:39 +00:00
Masafumi Max NAKANE
120ac26db8 Typo fix. 1999-04-19 18:48:26 +00:00
Martin Cracauer
466b673d7e Remove my temporary detection for PR 7059, Tor Egge fixed this bug. 
PR:		7059
 1999-04-13 12:43:55 +00:00
Tor Egge
c4e5a8a8b9 During variable expansion, the internal representation of the expression 
might be relocated.  Handle this case.
PR:		7059
 1999-04-13 04:13:09 +00:00
Martin Cracauer
4c1b08b3bb Fix typo in source-explaining comment. 1999-04-12 15:23:27 +00:00
Martin Cracauer
9d5efc1507 Add a guarded abort() for the problem in PR bin/7059 (no fix so far, 
this is hairy).

Reformat this file to comply to style(9). It had mixed styles before.

PR:		bin/7059
 1999-04-12 14:23:36 +00:00
Tor Egge
8b220a611d When a variable expansion is enclosed in double quotes, the internal 
representation of the expression is quoted.  Take care of this when
doing pattern matching in conjunction with trimming.

	#!/bin/sh
	c=d:e; echo "${c%:e}"

PR:		NetBSD PR#7231
Noticed by:	Havard Eidnes <Havard.Eidnes@runit.sintef.no>
 1999-04-09 15:23:48 +00:00
Martin Cracauer
4487495433 In interactive shells, break loops to the topmost level when a child 
is killed by a signal.

(In non-interactive shells - that means a shellscript - the shell just
exits, this was already working)

PR:		bin/9173
 1999-04-03 12:55:51 +00:00
Martin Cracauer
b8ec435e6b Implement -a flag. A test shell script can be found at 
http://www.cons.org/cracauer/download/sh-interrupt/testsuite/test_export.sh
The PR also had test cases the new version passes.

Fix typo in comment.

PR:		bin/1030
 1999-04-03 11:41:46 +00:00
Martin Cracauer
2870f7a83c -T was missing in the synopsis line. 
Submitted by:	BDE
 1999-04-02 09:28:00 +00:00
Martin Cracauer
c1c72a3c2a The immediate execution of traps I introduced in September 1998 (to 
make /etc/rc interruptible in cases when programs hang with blocked
signals) isn't standard enough.

It is now switched off by default and a new switch -T enables it.

You should update /etc/rc to the version I'm about to commit in a few
minutes to keep it interruptible.
 1999-04-01 13:27:36 +00:00
Brian Somers
71405fb6b3 sh doesn't support <> redirections. 
PR:	7325
 1999-03-31 21:02:01 +00:00
Joseph Koshy
c83e7c5041 Add references to test(1) and expr(1). 1998-12-18 03:51:18 +00:00
Warner Losh
a207266e91 Free memory from setmode. 
Obtained from: OpenBSD
 1998-12-16 04:45:35 +00:00
Bruce Evans
3b53d3803e Fixed warnx format errors in printf and csh, and snprintf format errors 
in sh, by using separate macros for the 1, 2 and 3-arg calls to warnx.
(The 3-arg warnx macro in sh/bltin/bltin.h used to require bogus dummy
args.)
 1998-12-07 12:14:04 +00:00
Bill Fumerola
0bd063bcd3 Fix typo. "If the an entry" --> "If an entry" 
PR:		docs/8140
Submitted by:	Sue Blake <sue@vedanix.welearn.com.au>
 1998-12-02 23:20:11 +00:00
Tor Egge
5557a02a60 Be more consistent with handling of quote mark control character. 
Don't output double-quotes inside variable expansion/arithmetic
expansion region in here-documents.  When leaving the arithmetic
expansion syntax mode, adjust the dblquote flag according to
previous syntax, in order to avoid splitting of quoted variables.
 1998-09-13 19:24:57 +00:00
Martin Cracauer
9bbfa41541 Narrow down conditions to break wait() to process traps. 
Improve comments.
 1998-09-10 22:09:11 +00:00
Martin Cracauer
e6ac45dde2 Fix an inefficiency I introduced in my last commit. 
Include "expand.h" vom memalloc.c to pull function declartion into scope
 1998-09-10 14:51:06 +00:00
Martin Cracauer
135421ddbf If traps are set, they are now executed even when a signal-blocking 
foreground child is running. Formerly, traps were exceuted after the
next child exit.

The enables the user to put a breaking wrapper around a blocking
application:
  (trap 'echo trap ; exit 1' 2; ./pestyblocker; echo -n)

The "echo -n" after the child call is needed to prevent sh from
optimizing the trap-executing shell away. I'm working on this.
 1998-09-08 13:16:52 +00:00
Tor Egge
6f47734fd7 Better handling of word splitting. Don't record the same region 
multiple times when performing nested variable expansion, and
preserve some quoting information in order to avoid removing
apparently empty expansion result.
 1998-09-06 21:13:09 +00:00
Tor Egge
37f0a6708e Don't blindly eliminate `..' and the previous pathname component. 
PR:		2541
Obtained from:	NetBSD
 1998-09-06 21:01:57 +00:00
Martin Cracauer
1f40b47b46 Improve bookkeeping of in_waitcmd and style fixes. 
Submitted by:	Bruce Evans
 1998-08-25 09:33:34 +00:00
Martin Cracauer
40d009a717 Re-enable killing childs with SIGQUIT. Spotted by Bruce Evans. 1998-08-25 08:49:47 +00:00
Martin Cracauer
a1c7435ae3 Got two volatile sig_atomic_t and int mixed up. Spotted by Gary Palmer. 1998-08-24 19:15:48 +00:00
Martin Cracauer
7a8e920bb9 Do not exit on SIGINT in non-interactive shells, fixes PR 1206, 
i.e. this makes emacs usable from system(3). Programs called from
shellscripts are now required to exit with proper signal status. That
means, they have to kill themself. Exiting with faked numerical exit
code is not sufficient.

Exit with proper signal status if script exits on signal.

Make the wait builtin interruptable, both with and without traps set.

Use volatile sig_atomic_t where (and only where) appropriate.

(Almost) fix printing of newlines on SIGINT.

Make traps setable from trap handlers. This is needed for shellscripts
that catch SIGINT for cleanup work but intend to exit on it, hance
have to kill themself from a trap handler. I.e. mkdep.

While I'm at it, make it -Wall clean. -Wall is not enabled in
Makefile, since vararg warnx() macro calls in usr.bin/printf/printf.c
are not -Wall-able.
PR:		1206
Obtained from:	Basic SIGINT fix from Bruce Evans
 1998-08-24 10:20:37 +00:00
Joseph Koshy
fab2680594 Document behaviour of "-" and "--" on the command line. 
PR: docs/5399
 1998-07-30 04:47:56 +00:00
Bruce Evans
3c3472fb32 Added a `build-tools' target for internal tools. 
Removed explicit dependencies of foo.o on foo.c.  These were mainly
placeholders for comments about missing dependencies of tools objects
on headers.  This problem needs to be handled more generally.
 1998-07-07 01:06:58 +00:00
Philippe Charnier
3d7b5b9302 Add rcsid. Spelling. 1998-05-18 06:44:24 +00:00
Bruce Evans
3ef22d496d Backed out previous backout. Put y.tab.h back in SRCS. 1998-05-06 15:33:59 +00:00
Bruce Evans
e43e36af7d Backed out previous commit. It was tested, but not for the case where 
a separate object tree doesn't exist.  Crufty makefiles will have to
put y.tab.h in SRCS so that we know not to create foo.h from foo.y.
 1998-05-05 07:36:55 +00:00
Bruce Evans
b681d90662 Fixed races in `make -jN' using new yacc rules. 1998-05-04 20:09:06 +00:00
Martin Cracauer
686ed44763 When calling a shell function, remember whether exit status is tested. 
This is needed for the '-e' option. See the PR for more details.
PR:		6047
Reviewed by:	PR submitter, silence on review request.
 1998-05-04 07:24:10 +00:00
Bruce Evans
cddfa6c981 Backed out most of rev.1.19 (explicit dependencies of object files 
on generated headers).  This is now handled generally in bsd.prog.mk.
 1998-04-26 16:12:23 +00:00
John Polstra
6466945a67 Explicitly describe the rules the shell uses to search for a file 
sourced by the "." command.
 1998-02-12 01:23:11 +00:00
Martin Cracauer
8624242ab8 Back out my previous attempt to fix SIGINT/SIGTERM behaviour 1998-02-06 23:50:39 +00:00
Martin Cracauer
9dee16dba6 Fix handling of SIGINT/SIGQUIT for foreground subprocesses. Most 
urgent need is when you run sh around a program that intentionally
uses SIGQUIT/SIGINT for asynchronous events, i.e. $EDITOR started from
system(2), like many mailers do. This fixes PR bin/1206 and possibly
bin/4241.

The solution committed has been tested for a large number of possible
cases (see recent discussion on cvs-committers). I completed a make
world, made sure 'make world' is interruptable and used the changed
/bin/sh as a login shell all day, including job control and using
SIGQUIT-catching programs (to write this message :-).

PR:		bin/1206
Reviewed by:	discussion on cvs-commiters
 1998-02-06 18:14:26 +00:00
Steve Price
ee7dc4169c Correct a bogon in an example. 
PR:		5415
Submitted by:	Sergei S. Laskavy <laskavy@pc759.cs.msu.su>
 1998-01-02 19:23:05 +00:00
Alexander Langer
3344c3521c Added $Id$. 1997-12-29 00:00:10 +00:00
Eivind Eklund
007d33500e Remove simultaneous include of <sys/param.h> and <sys/types.h>. 
Reorder includes to be alphabetical some places since I already was in
here.
 1997-12-10 22:18:54 +00:00
John Polstra
c351e0897e Document the exit status for a command that was terminated by a 
signal.
 1997-11-12 04:32:50 +00:00
Bruce Evans
28701136f7 Fixed some type and value mismatches. setsignal() returned a bogusly 
cast value that was always ignored.  Rev.1.9 of trap.c made this
more bogus by returning a semantically different value after calling
siginterrupt().  Avoid these problems by not returning a value.
 1997-11-10 11:32:24 +00:00
Andrey A. Chernov
8dd81503df 1) Fix longstanding bug: 
trap 'echo xxx' 1 2 3 15
	read x
is not interrupted by ^C (due to restartable read syscall) and must be
interrupted per POSIX
Worse case:
	read -t 5 x
hangs forever after ^C pressed (supposed to timeout after 5 secs)
Fixed by adding siginterrupt(signo, 1) after catch handler installed

2) Do not reinstall sighandler immediately after it is called,
BSD do it for us
 1997-11-05 23:33:58 +00:00
Jordan K. Hubbard
97fe7f477f Changes to support full make parallelism (-j<n>) in the world 
target.
Reviewed by:	<many different folks>
Submitted by:	Nickolay N. Dudorov" <nnd@nnd.itfs.nsk.su>
 1997-10-05 09:40:24 +00:00
Mike Smith
afa53c8df7 Add the '-t timeout' option to the 'read' builtin. This allows the 
'read' command to return an error if the user fails to supply any
input withink a given time period.  The behaviour of this option is
similar to that of the like-named option in ksh93.

Reviewed by:	joerg
 1997-09-29 15:15:16 +00:00
Wolfram Schneider
c7a197e1d8 PR: docs/4449 
The -c flag is not documented in the sh(1) manapge.

Submitted by: adrian@virginia.edu
 1997-09-13 17:40:00 +00:00
Bruce Evans
18f368f2e4 Restored clobbered parts of rev.1.15 (build intermediate object files 
for tools).
 1997-08-25 19:50:01 +00:00
Steve Price
ead152eb86 Make all status values an integral type and use 
pid_t when referring to process IDs.
 1997-08-18 02:53:20 +00:00
Jordan K. Hubbard
f2d0ae8518 Back out previous fix - this bug's got diplomatic immunity as a registered 
political issue.
 1997-06-19 17:57:06 +00:00
Jordan K. Hubbard
fc0eef9f89 >Number: 3780 
>Category:       bin
>Synopsis:       WEXITSTATUS() may return nagative value, which causes sh to generate bad $?

PR:		3780
Submitted by:	sanewo@ba2.so-net.or.jp
 1997-06-19 15:14:01 +00:00
Andrey A. Chernov
ea1376dfbb Now [^abc] means the same as [!abc] like bash and *csh already does 1997-06-06 23:04:33 +00:00
Steve Price
00fc54b03c Make sh(1) less aware of the bit fields returned by wait by 
using the WIF* macros in sys/wait.h.

PR: bin/3668
Submitted by:	dholland@eecs.harvard.edu
 1997-05-24 21:04:55 +00:00
Steve Price
9e5a9c06d0 Remove y.tab.h from the beforedepend target. Also add a 
rule that shows the dependency of arith_lex.[co] on y.tab.h.

Suggested by: Bruce Evans <bde@zeta.org.au>
 1997-05-21 03:23:23 +00:00
Steve Price
b7059dd6df Add explicit y.tab.h rule so that 'make depend clean all' does 
not fail with an "don't know how to make y.tab.h" error.
 1997-05-19 00:29:29 +00:00
Steve Price
e7a0b0244d Use the __unused attribute where warranted. 1997-05-19 00:18:52 +00:00
Steve Price
f7a827cc92 Miscellaneous sorting and addition of rules for object files that 
depend on generated headers.

Reviewed by:	Bruce Evans <bde@zeta.org.au>
 1997-05-19 00:16:27 +00:00
Steve Price
ea76be72fe Revise the section that explains how to protect parts of an $ENV script 
from being executed in non-interactive mode.

Suggested and Reviewed by: Brian Somers <brian@freebsd.org>
 1997-05-07 11:42:00 +00:00
Steve Price
2afa86e799 Don't source $ENV unless this is an interactive shell. 1997-05-05 03:45:17 +00:00
Steve Price
5382d20cf1 Turn on the new type builtin. 1997-04-28 03:50:07 +00:00
Steve Price
96522b887c Sync with NetBSD's revision 1.29 of this file. 
Obtained from: NetBSD
 1997-04-28 03:28:43 +00:00
Steve Price
f4eb55ba86 Remove an extra semicolon and nuke register keyword usage. 1997-04-28 03:27:12 +00:00
Steve Price
79f569479b Fix redirection of unopened file descriptors and nuke register 
keyword usage.

Obtained from: NetBSD
 1997-04-28 03:25:13 +00:00
Steve Price
7920a31db6 Revert changes from rev 1.16 to 1.17 for now. Closes PR 2879. 1997-04-28 03:22:09 +00:00
Steve Price
ab72124fb4 mdoc-ify and cleanup UNIMPLEMENTED messages. Closes PR 2880. 1997-04-28 03:20:09 +00:00
Steve Price
115359949d Reorder declarations slightly. 1997-04-28 03:17:51 +00:00
Steve Price
904a3dc819 Avoid a possible NULL pointer dereference, nuke register usage, 
and remove an unnecessary reset.

Obtained from: NetBSD
 1997-04-28 03:16:12 +00:00
Steve Price
7e461ef4f3 Nuke register keyword usage, #if -> #ifdef, and avoid void * 
arithmetic.

Obtained from: NetBSD
 1997-04-28 03:14:04 +00:00
Steve Price
4ca7fe3b96 Nuke register keyword usage, rename pread to preadfd, and open 
input files FD_CLOEXEC.

Obtained from: NetBSD
 1997-04-28 03:11:52 +00:00
Steve Price
62730a71b9 When NO_HISTORY is defined and the history command is used 
show an error message.

Inspired by: NetBSD
 1997-04-28 03:10:31 +00:00