Commit Graph

156 Commits

Author SHA1 Message Date
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