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518 Commits

Author SHA1 Message Date
pk
8c06f48e15 Sprinkle some `const's in DEBUG bracketed code. 1999-10-08 21:10:44 +00:00
bouyer
d406538de6 xref sysctl(8) (for proc.<pid>.rlimits) 1999-09-28 14:54:41 +00:00
mjl
4c5c12b3f0 Mention -c option to sh(1), noticed by Matthew Aldous in PR/8499. 1999-09-27 19:34:25 +00:00
mycroft
2806df576c It turns out that the code disabled in revision 1.30 *does* have an important 
function (which nobody was able to explain): it's critical to allowing a
complex command run from an interactive shell to be terminated.  So, reinstate
it and fix it correctly.  See the comment if you really want the gory details.
 1999-08-31 08:58:47 +00:00
christos
3d42469030 compile with WARNS = 2 1999-07-09 03:05:49 +00:00
christos
f914977fae add -q in the synopsis line 1999-07-06 14:01:01 +00:00
christos
02048e84df PR/7814: Matthias Scheler: shell does not fork for builtins in backquotes, 
leading to unexpected behaviour. Disable the no-fork optimization for now.
We need to revisit this and keep enough state around to recover from such
changes.
 1999-06-26 16:31:47 +00:00
he
e97b0193be Fix for bin/7502, from Tor Egge / FreeBSD. Their commit message: 
> During variable expansion, the internal representation of the expression
> might be relocated.  Handle this case.
 1999-04-30 17:54:17 +00:00
he
4e69294c60 Correct a rather obvious typo (once Tor Egge pointed it out to me) 
in the last change.
 1999-04-06 21:05:27 +00:00
mycroft
2e23138ad7 If we exit due to a SIGINT, do it with raise() so that the wait status is 
correct in the parent.
 1999-04-05 15:00:28 +00:00
mycroft
c06643b836 Disable bogus-looking code that cause us to throw away SIGINTs. 1999-04-05 14:59:35 +00:00
christos
832949b912 When we execute commands from a shell script, make sure that the signals 
are being caught (reported by Alexis Rosen), similar to the -c case.

#!/bin/sh
vi "$@"

^C when the script is running...
 1999-03-27 13:46:19 +00:00
christos
28607542af PR/7231: Havard Eidnes: Shell quoting/trimming problem 1999-03-26 15:49:34 +00:00
ross
4b1d9297dc Make the `...' actually appear in the case/esac syntax section. 
Fix a space botch in the $@ example.
Kill warnings caused by the effective but wrong use of \[ and \] to
perform the function of \&[ and \&].
 1999-03-23 02:29:29 +00:00
garbled
f124765044 More and more .Os cleanups. .Os is defined in the tmac.doc-common file, 
so we shouldn't override it with versions in the manpages.  Many more to
come.
 1999-03-22 18:25:43 +00:00
castor
dc67d78474 Add '#include <sys/types.h>' since that's where int8_t and u_int8_t can 
usually be found.
 1999-03-08 17:55:20 +00:00
wrstuden
6790f70d78 Make cross-building from i386 to powerpc (from signed to unsigned char) 
ports work right.
 1999-02-23 01:50:26 +00:00
christos
96a46ed7b1 Fix off-by-one error in the starting point to search for an arithmetic 
expression.
 1999-02-06 17:23:09 +00:00
tron
96dc868859 Remove "arith.h" while cleaning. 1999-02-05 22:19:47 +00:00
christos
1666f88d5d Fix the -c problem differently. We cannot just ignore SIGINT etc, otherwise 
we cannot interrupt sh -c <command>
 1999-02-05 21:21:27 +00:00
christos
b4c9a78425 PR/5577: Craig M. Chase: sh does not build with PARALLEL set. 
- Added YHEADER in Makefile, removed arith.h and adjusted the sources.
 1999-02-05 07:52:51 +00:00
christos
6e50d7a816 PR/4966: Joel Reicher: Implement <> redirections which are documented in 
the man page.
 1999-02-04 16:17:39 +00:00
christos
dd65252560 PR/1788: Shinya Taniguchi: sh -c does not setup signals properly. 
[Reminded to me by Alexis Rosen -- thx!]
 1999-02-04 11:20:40 +00:00
cjs
9063efaca0 Add -q option, which when used with -v and/or -x, turns off the tracing 
during the execution of /etc/profile, .profile and $ENV.
 1999-02-04 00:27:07 +00:00
itohy
362c3e31c9 The builtin . (dot) command no longer sees the current working directory 
even if the specified file is not in the PATH.
This change enforces security and makes it conform to POSIX.

Closes PR #6794.
I thought Christos committed this but not appeared yet. :)

The setstackmark()/popstackmark() pair in dotcmd(), used for freeing
stack storage possibly allocated by find_dot_file(), is redundant for now
since dotcmd() is surrounded by another pair in evalcommand().
This redundancy, however, may help future modifications
(suggested by Christos).
 1999-02-02 15:49:52 +00:00
kleink
f71d010d24 Add support for the export and readonly -p option. 1999-01-28 18:11:50 +00:00
mycroft
1fbf0781c6 Patches from Tor Egge (via Havard Eidnes) to fix various bugs in field 
splitting and combining.
(Note: Some of this are not strictly bugs, but differences between traditional
Bourne shell and POSIX.)
 1999-01-25 14:20:56 +00:00
christos
e1849b79b1 PR/6213: Urban Boquist: /bin/sh does not handle a trapped signal correctly 
The problem was that system calls got restarted after a signal,
	 instead of returning EINTR. Thus the read builtin, had no way to
	 know that a signal occured that could change the course of execution.
	 Since the code has sprinkled checks for EINTR all over the place,
	 it is supposed to work properly with non restartable syscalls.
	 The fix is to use siginterrupt(signo, 1), before setting a signal
	 handler, to make sure that system calls don't get restarted.
 1999-01-18 16:18:04 +00:00
garbled
f33f4be925 Massive fixup: 
Rewrite man page in mandoc format rather than nasty man format.
Fix a ton of parsing errors, and generate proper .Xr's.
document all known environment variables.
suggest ksh rather than bash.

The last two fix PR #1966.  Wheee!

Somebody with access to the POSIX spec needs to go in here, and document
our adherence, or lack thereof.
 1999-01-11 19:34:53 +00:00
msaitoh
576a5fdc92 fix some bugs 1998-11-17 14:16:32 +00:00
garbled
b4e6f9c37a Modify to better document getopts. This fixes PR# 704. Much thanks to 
Christos for helping me out with this.
 1998-10-29 23:23:36 +00:00
ross
7fc1302b5d The recent cross-compile changes broke the build of x_sh. Properly use 
${.IMPSRC} instead of the broken ${.CURDIR}/thing.c.
 1998-10-08 00:29:38 +00:00
itohy
ef88b5d2bd Fixed memory leak on old style command substitution 
such as  sh -c 'echo `echo foo`' .
The memory allocated with ckmalloc() at
parser.c:1349:readtoken1() (search for "done:" label)
was never freed.

I changed this to use 'string stack' framework of Ash.
Note that a string on string stack is properly freed on
exception and end of command parsing, and no explicit free
or signal handlings required.
See TOUR for an overview, and memalloc.[ch] for details
of string stack.
 1998-09-26 20:56:33 +00:00
christos
26e51b35ac include <stdlib.h> to get the prototype for free() 1998-09-26 19:28:12 +00:00
itohy
cc484b787f The return value of setmode(3) is a pointer to malloc()'ed area 
and must be freed to avoid memory leaks if called repeatedly.
The leaks occured on symbolic umask command, such as "umask go-w",
which is undocumented.
 1998-09-24 17:49:48 +00:00
wrstuden
1037acbf7e We don't generate .o's anymore for helper programs, so don't CLEANFILES them. 1998-09-12 18:58:41 +00:00
wrstuden
d10063d5c7 Patch to make sh cross-compile right. mksyntax reports unsigned char for 
powerpc, and signed for m68k & i386.
 1998-09-12 18:55:07 +00:00
mycroft
ee9e50eacb Be more retentive about use of NOTREACHED and noreturn. 1998-07-28 11:41:40 +00:00
mycroft
9dc385beb1 Delint. 1998-07-28 05:31:22 +00:00
christos
d06f150426 PR/5848: David Holland: Use PIPE_BUF instead of hardcoding 4k 1998-07-27 17:12:45 +00:00
mycroft
5dd823ab5d const poisoning. 1998-07-26 19:44:12 +00:00
ross
69228f8bd8 Small edit to n1>&n2 description. 1998-07-04 06:52:07 +00:00
ross
ac875dda03 Fix a set of bugs where a cd of a relative pathname or a cd through a 
symbolic link would not set PWD.
 1998-05-21 16:50:40 +00:00
christos
efee39278b Simplify interface for general use. 1998-05-20 01:36:14 +00:00
christos
f792cdd756 Cast is*() args to unsigned chars in case the ctype macros are implemented 
using arrays.
 1998-05-20 00:32:05 +00:00
christos
96133865eb cast pid's to longs for OS's where this is the case. 1998-05-20 00:31:11 +00:00
christos
338ea4cec8 fix bug where if moving in history during a multi-line event, the 
append to history event would end up in the last event where the history
was moved to instead of the multi-line event; reported by Mycroft
 1998-05-20 00:29:26 +00:00
christos
3d8b8b2ed2 Fix dangling else warning. 1998-05-20 00:27:56 +00:00
christos
3ebdac1759 Portability fixes for a non flex based lexical analyzer. 1998-05-18 22:50:20 +00:00
christos
c6e03280d4 Need stdlib.h 1998-05-18 22:48:53 +00:00
christos
d2ded939ef PR/5315: Dan Winship: options parsing code should print errors to stderr. 1998-05-02 18:04:09 +00:00
cgd
2072394059 move OBJS depenency on built headers to after include of bsd.prog.mk, so 
that things are built in the right order on 'make cleandir && make' (i.e.
so that the headers are properly built).
 1998-04-19 05:22:08 +00:00
lukem
d6c354cb4b * remove CFLAGS+=-w for powerpc (added in 1.26): 
- it was in the wrong place
	- makefiles shouldn't override CFLAGS; only CPPFLAGS and COPTS
	- christos fixed unsigned char stuff in 1.33 which should
	  remove the need for -w anyway
* move .include <bsd.prog.mk> to EOF
 1998-04-13 12:06:48 +00:00
tv
482063559a .y.c <sys.mk> rule fixes. Don't create a y.tab.h file unless asked for, 
and use smarter creation of the header file.
 1998-04-09 00:32:31 +00:00
fair
667e4d4cd1 fix default PATH to be <paths.h> _PATH_DEFPATH 1998-04-07 21:15:33 +00:00
fair
618cca243b Change a few things to reference /usr/include/paths.h instead of local 
references. Fixing the default PATH is a bit more effort.
 1998-04-07 10:16:04 +00:00
veego
7f307512f9 Another try to make this work again. Lets hope that the we don't need a 4th 
fix for it.
 1998-03-30 12:06:48 +00:00
mrg
6e35073fed make this work again when . is not in $PATH 1998-03-30 10:07:16 +00:00
christos
0328c41456 Pr/5221: Jason Thorpe: Simplify sh Makefile, so that builts from other 
directories work.
 1998-03-29 09:27:40 +00:00
mrg
a26bae1e08 - change "extern" variables into int's 
- remove extern'd variables not actually referenced
- don't use char as an array index
 1998-03-29 04:41:43 +00:00
christos
04784d87fa Fix the VSTRIMRIGHT* bugs... The problem was not the string length computation, 
but lack of '\0' termination. Factor this segment out as common code too, while
I am there.
 1998-03-23 18:21:02 +00:00
christos
19e7771baa off by one error in ${%%} 1998-03-10 19:11:07 +00:00
christos
7cfc52b208 PR/5001: Tom Yu: cd ./ does not work. 1998-02-17 02:57:16 +00:00
christos
ce0d4f06a6 Previous fix broke $var quoting. Try again differently :-) 1998-02-17 00:16:16 +00:00
christos
d8a1d3710c Re-enabled EXP_RECORD 1998-02-05 08:34:49 +00:00
christos
f7c8df6d68 Fix bug introduced by EXP_RECORD, where in case there was a variable expansion 
involved in the `for' list, the list was recorded twice, leading to incorrect
argument expansion.
Introduce ifsfree() function that free's the IFS region list, GC'ing duplicated
code.
 1998-02-05 08:32:00 +00:00
thorpej
b65b5cae9e Sigh, have to cast pointer diffs to long. 1998-02-04 23:49:25 +00:00
thorpej
a40a144d00 Fix printf formats so they work on the Alpha. 1998-02-04 20:10:16 +00:00
mikel
a235399817 back out last change until christos fixes EXP_RECORD; PR 4932 1998-02-04 06:25:55 +00:00
christos
5a36c00160 PR/4851: Benjamin Lorenz: In the "for <var> in <args>" construct <args> 
was not marked as a region to be handled by ifsbreakup. Add EXP_RECORD
to indicate that the argument string needs to be recorded.
 1998-01-31 12:45:06 +00:00
christos
2b259b0600 - Add gcc attributes to printf like functions 
- Fix format strings to be const
- Fix buffer length to be size_t
- Add %p format
- Avoid code duplication in varargs/stdarg cases
 1998-01-31 12:37:55 +00:00
christos
7faabd5800 Include our local includes after the system's ones. 1998-01-31 12:36:16 +00:00
christos
71868e12e2 Fix printf format. 1998-01-31 12:34:12 +00:00
christos
e3f5fb922f BSD4_4 is a standard symbol in <sys/param.h>; make sure that files 
that need this defined, include <sys/param.h> and don't define it in
the Makefile. Add a comment to that effect.
 1998-01-21 10:47:37 +00:00
pk
5d9692a740 Define BSD4_4: quad_t's in struct rlimit; 1998-01-20 22:43:34 +00:00
christos
38c84eeda3 test for the boundary condition in the previous trailing blank fix 1998-01-16 16:26:22 +00:00
christos
2708e4180f PR/4805: Ty Sarna: read builtin does not remove trailing blanks. 1998-01-15 19:39:11 +00:00
christos
505573954e Unfortunately (as I expected) the previous change broke: 
sleep
    cmd='set `type "sleep"`; eval echo \$$#'
    which=`eval $cmd`
    echo $which

because the region did not get recorded at all, and it was interpreted as
a single word. I modified the code to keep track when the result of a
backquote expansion has been recorded to avoid recording it twice. I still
feel that this is not the right fix... More to come.
 1997-12-01 14:43:20 +00:00
christos
81aad04920 Remove local declaration of getenv(); 1997-12-01 14:40:16 +00:00
christos
b7e4df7784 PR/4547: Joern Clausen: Incorrect argument expansion in backquote variable 
assignment. E.g.
	echo ${foo:=`echo 1 2 3 4`}
prints:
	1 2 3 1 2 3 4
because when the arquments are not quoted, the backquote result
gets recorded twice.  The fix right now is to comment out the
record_region() call in expbackq().  I hope that it does not break
anything else.
 1997-11-30 20:57:33 +00:00
cjs
af5956aa6b Make this compile with -DSMALL and warnings on. 1997-11-12 03:40:55 +00:00
kleink
3780e6aa5d Per 1003.2, the (builtin) read utility shall treat the backslash as an 
escape character (including line continuation), unless the `-r' option
is specified:
* adopt to this behaviour, add the `-r' option to disable it;
* remove the `-e' option, which was previously necessary to get this behaviour.
 1997-11-05 14:05:28 +00:00
christos
82ec25620f pid should be pid_t and status should be int! Avoid alignment problems... 1997-10-15 13:23:10 +00:00
christos
946049095f PR/4257: Jaromir Dolecek: Update for libedit interface change. 1997-10-14 15:06:42 +00:00
christos
e230a48b57 CFLAGS->CPPFLAGS 1997-10-10 19:47:50 +00:00
christos
7f2a271743 PR/3662: David Holland: Make /bin/sh use the symbolic macros for wait(). 1997-10-08 20:31:52 +00:00
lukem
92d7aa0376 getopt returns -1 not EOF 1997-09-14 07:43:56 +00:00
thorpej
23eb2db171 Avoid a segv in bltinlookup() reported by Ronald Khoo <ronald@demon.net> 
in PR #3929, fix submitted by hiroy@NETCOM.COM (Hiroyuki Ito).
 1997-08-26 20:09:59 +00:00
christos
23edbe3557 Remove WARNS=1 from all the subdirectory Makefiles, and add it to Makefile.inc 
now that all /bin has been cleaned.
 1997-07-20 22:36:20 +00:00
christos
c996803cad PR/3888: Chris Demetriou: type command-with-slash prints 
$PATH[0]/command-with-slash...
 1997-07-20 21:27:35 +00:00
thorpej
d891aff808 Cast the result of pointer arithmetic to "long", and use %ld to print it. 1997-07-18 17:46:59 +00:00
christos
18ad58a639 PR/3866: bayer@informatik.uni-leipzig.de: core dump using xon script. 
cmdenviron is pointing to varlist.list; varlist gets reset everytime
you enter evalcommand, but cmdenviron does not. The wonders of global
variables...
 1997-07-15 17:49:15 +00:00
christos
1eb178df64 Fix Sparcworks warnings. 1997-07-15 17:45:53 +00:00
christos
bb5e01d099 Don't re-define setjmp/longjmp in the svr4 case 1997-07-15 17:44:32 +00:00
phil
1d304ac34c Add a missing ) in the description of the builtin "set". 1997-07-10 23:07:04 +00:00
phil
64eb899e5a Make code agree with man page in processing expansion of "$*". 
Fix from PR 2647.
 1997-07-07 20:41:10 +00:00
christos
5accccd051 Fix problem introduced in yesterday's commit that broke both signed and 
unsigned character machines. So that people don't have to reverse engineer
this again:
	mksyntax detects if characters are signed or not and builts a syntax
	table that has a base of 129 for signed characters or 1 for unsigned
	characters. This is so the largest negative signed char [-128] + the
	base == 1. 0 is special and means end of file in both cases. PEOF
	is -1 for the unsigned character case and -129 for the signed
	character case, so that syntax[PEOF + base] == syntax[0] == CEOF
	So PEOF has to be -1, but it is explicitly compared with
	unsigned characters on machines where characters are unsigned.
	The quick fix is to define UPEOF the (unsigned char) version of PEOF
	and use that. A better fix is to always use unsigned characters
	when referencing symbol table entries, but that would require
	extensive changes to the shell. So to summarize

	syntax[0] == CEOF, base + PEOF == 0

		unsigned	signed
	base	1		129
	PEOF	-1		-129
 1997-07-05 21:25:09 +00:00
christos
687f7852d9 Make the syntax tables work on machines where characters are unsigned. 1997-07-04 21:40:55 +00:00
christos
cd799663e4 Fix compiler warnings. 1997-07-04 21:01:48 +00:00
christos
28f5c57bd5 Don't roll own rules to build helper programs. 
Add WARNS
 1997-07-04 21:00:36 +00:00
christos
cbf48b75c7 PR/3827: Wolfgang Rupprecht: cd ./. core dumps 
Warning cleanups
 1997-07-04 20:59:40 +00:00
lukem
a1267d0c71 add auto-generated token.h to dependancy for ${OBJS}. 
not everyone runs "make depend" ...
 1997-06-16 02:42:38 +00:00
cjs
cddf57d923 Add documentation for ulimit command, courtsey of 
Eric Fischer <eric@fudge.uchicago.edu>.
 1997-05-23 19:40:30 +00:00
veego
3e90f9b423 Add mkinit.o mknodes.o mksyntax.o to CLEANFILES 1997-05-15 10:03:24 +00:00
mycroft
cc4a1553a1 Eliminate bogus redefinitions of standard targets. 1997-05-09 07:50:03 +00:00
gwr
10e180cc49 Back out the .PATH.c changes. The .depend problem (and others) 
will be fixed using the new .NOPATH make feature instead.
 1997-05-08 21:11:01 +00:00
gwr
012e528f2e Use .PATH.c: ... 1997-05-06 20:44:56 +00:00
christos
fb758fd82b PR/3452: Jerry Peek: Redirections of unopened fd to file failed. 
for arg in a b c
    do
	echo hi this is $arg 1>&3
    done 3> foo
 1997-04-21 12:38:25 +00:00
thorpej
062f26f33b - XXX Inhibit warnings on PowerPC for now - there are lots of 
"char is unsigned" problems here.
- Add rules for mkinit, mknodes, and mksyntax that use the HOST_*
  facilities, for cross-compiling.
 1997-04-17 08:13:26 +00:00
christos
3a468199cb #if __STDC__ -> #ifdef __STDC__ 1997-04-11 23:08:40 +00:00
christos
360e930d42 Make this work on systems that don't have quads 1997-04-11 23:08:15 +00:00
christos
2c8f740e5c __svr4__ -> __SVR4 1997-04-11 23:07:47 +00:00
christos
7ea7f895f5 Use #ifdef __STDC__ instead of #if __STDC__ 1997-04-11 23:06:51 +00:00
christos
92cdde85e8 Fix so that this compiles on systems without quads and remove the double 
inclusion of varargs/stdarg
 1997-04-11 23:05:43 +00:00
christos
70bb105c67 Pointer arithmetic on void * is illegal but gcc does not care. 1997-04-11 23:03:08 +00:00
christos
23745b89db Don't call getpwd() because if that fails the shell cannot start. (from scott) 1997-04-11 23:01:44 +00:00
christos
f726a3c453 Rename pread to preadfd 1997-04-11 23:00:40 +00:00
christos
3bddaec49b add forward declaration of union node; 1997-04-11 22:58:40 +00:00
christos
7efa5addb4 Track $TERM and call the appropriate editline(3) routine to update the 
terminal type.
 1997-04-11 22:45:38 +00:00
christos
a0fa692d3b PR/3352: From Hiroyuki Ito: ${#1} was not being expanded properly if there 
was a need to allocated another stack block.
 1997-03-18 18:54:40 +00:00
christos
7accaec421 NO_HISTORY->SMALL 1997-03-14 01:42:18 +00:00
christos
6042831b7e Fix problems with -DNO_HISTORY 1997-03-13 21:57:32 +00:00
mycroft
3a59e5e8e3 Set input files to close-on-exec mode. 1997-03-13 20:07:49 +00:00
mouse
412433b44c alternate -> alternative, per PR 2643 1997-03-08 13:26:20 +00:00
christos
6b7623a681 Fix PR/3289: upon initialization check if $PWD contains the right directory 
and use it. We also maintain $PWD now, like the rest of the
	     shells.
 1997-03-07 21:36:19 +00:00
christos
4a521d359f varisset fixes: 
- treat $0 specially since it is not in shellparams
	- check the number of parameters instead of walking
	  the parameters array to avoid checking against the
	  null terminated element.
 1997-03-03 19:26:18 +00:00
christos
edc5dadbab PR/3269: Off by one in varisset(), caused variable substitution not to 
count the last positional parameter as set.
 1997-03-01 19:33:29 +00:00
christos
a5aaf55cf3 Fix PR/3258 sh -c 'echo $0' causes segmentation fault. 1997-02-25 17:51:50 +00:00
christos
680690d33c add type builtin. 1997-02-06 23:24:52 +00:00
christos
6f224ae59f Fix parsing problem introduced in the previous ${10} fix, where $#digit 
or $digit# would get mis-parsed as a positional parameter.
 1997-01-26 18:05:34 +00:00
christos
633ceb6db5 - varisset(): In positional arguments, take into account VSNUL so that: 
set -- ""; echo ${1:-wwww} works.
- when expanding arithmetic, discard previous ifs recorded regions, since we
  are doing our own scanning. x=ab; echo $((${#x}+1)) now works.
- in ${var#word} fix two bugs:
   * if there was an exact match, there was an off-by-one bug in the
     comparison of the words. x=abcd; echo ${x#abcd}
   * if there was no match, the stack region was not adjusted and the rest
     of the word was getting written in the wrong place. x=123; echo ${x#abc}X
 1997-01-24 17:26:28 +00:00
christos
3d5f212ba8 enable parsing of multi-digit positional arguments i.e. ${10} works and it 
is not a bad substitution.
 1997-01-24 17:15:56 +00:00
tls
48250187e6 kill 'register' 1997-01-11 02:04:27 +00:00
cjs
5678a13f1b Re-introduce some code from 1.14 (with modifications) to make the 
shell's idea of the current working directory match reality when
symlinks (or anything else we can't stat) are traversed with the
cd command. However, this does not print out the cwd after cd
traverses symlinks, as it used to, though the capability is still
there should one want to use it.
 1996-12-22 08:34:34 +00:00
christos
a00e49c200 Getopts bugs again (I'll never get this right). 
- make sure that OPTIND is set correctly even in the absence of options.
- don't keep stale state between getopts calls.
 1996-12-15 20:37:09 +00:00
christos
340077b543 - fix parsing bug reported by mycroft: ! was only recognized in the beginning 
of pipelines. Now we are recognizing it everywhere like ksh, so:

	! if [ a = b ]; then ! echo c && ! true; else ! echo d; fi

  works.
 1996-11-25 20:22:00 +00:00
christos
9530a32719 Fix bug in getopts code where the argument list got truncated. 
From Todd Miller.
 1996-11-24 20:48:01 +00:00
christos
07aeb5b266 remove a debugging printf that was left from the last POSIX error code fixes. 1996-11-09 01:04:07 +00:00
christos
ccce082dd2 Fix miscellaneous getopts problems: 
- the 3 argument version of getopts would not reset properly
- OPTARG did not get cleared after a non argument option was found
- OPTIND was not set properly after a non argument option.
 1996-11-06 01:17:10 +00:00
christos
846dce0ee3 Fix problems that gcc -Wall found (from Todd Miller, OpenBSD) 1996-11-02 18:26:03 +00:00
christos
a4ad4c0efc A correction to the previous patch from Todd Miller. 1996-11-02 18:07:08 +00:00
christos
27e15e5bbc echo ${1:-empty} did not do the substitution; from Todd Miller (OpenBSD) 1996-11-02 17:47:41 +00:00
cgd
8ba64baaaf add builtins.h to the list of (built) headers depended on by ${OBJS}, so 
make from 'cleandir' works.
 1996-10-22 13:22:19 +00:00
abrown
e613224229 Remove leftover printf("here") from last change. 1996-10-19 02:38:36 +00:00
christos
bc73cf950a PR/2808: Remove trailing whitespace (from FreeBSD) 1996-10-16 15:45:03 +00:00
christos
afb80e9b13 PR/2808: Add a definition for warnx() (from FreeBSD; currently unused) 1996-10-16 15:28:10 +00:00
christos
2b0a187f34 PR/2808: Use .Nm macro properly. (from FreeBSD) 1996-10-16 15:27:03 +00:00
christos
1a523dd56b PR/2808: - Don't use p++ in macros. 
- Hash using unsigned numbers.
	 (from FreeBSD)
 1996-10-16 15:24:31 +00:00
christos
68b1dcea6d PR/2808: Don't define DEBUG and #ifdef out functions not needed when DEBUG 
is not defined (from FreeBSD).
 1996-10-16 15:21:49 +00:00
christos
3b66e0cada PR/2808: Add HISTORY section and documentation of getopts. (from FreeBSD) 1996-10-16 15:20:01 +00:00
christos
da8c1311a3 PR/2808: fix redirection to the same file descriptor 
better error messages for failed pipes
	 (from FreeBSD)
 1996-10-16 15:16:04 +00:00
christos
d8c242f0ae PR/2808: - detect eof inside backquotes 
- handle && and || shortcircuits properly
	 - tokens.def -> tokens.h
	 (from FreeBSD)
 1996-10-16 14:53:23 +00:00
christos
10a76271de No need to have 2 declarations for the same constant string, one for K&R and 
one for STDC...
 1996-10-16 14:51:24 +00:00
christos
fd8c99438e PR/2808: POSIX 1003.2: first arg after -c cmd is $0, remainder $1... 
(from FreeBSD)
 1996-10-16 14:49:56 +00:00
christos
14185e5152 PR/2808: Kill use of error2() (from FreeBSD) 1996-10-16 14:49:03 +00:00
christos
71ab1d0aed PR/2808: tokens.def -> tokens.h 1996-10-16 14:47:49 +00:00
christos
03ba3cf0d6 PR/2808: Use the <ctype.h> functions instead of our homegrown tables to 
determine if a character is alpha or alphanumeric, so that NLS
	 works... now if only our NLS really worked... (from FreeBSD).
 1996-10-16 14:46:35 +00:00
christos
f6c00506fc PR/2808: Remove extraneous newline from error message (from FreeBSD) 1996-10-16 14:44:28 +00:00
christos
00a9e38ee8 PR/2808: #undef things that we #define to avoid duplicate definitions. 
(from FreeBSD)
 1996-10-16 14:43:37 +00:00
christos
a20d79429a PR/2808: Don't include <sgtty.h> unless OLD_TTY_DRIVER is defined. 
Remove extraneous newline from error messages.
 1996-10-16 14:42:20 +00:00
christos
435812e77d PR/2808: Remove extraneous newlines from error routines (from FreeBSD) 1996-10-16 14:40:32 +00:00
christos
4b99c4d748 PR/2808: Fix parsing of $n where n > 9 (from FreeBSD) 1996-10-16 14:38:58 +00:00
christos
2a9c11dd53 PR/287: Shell does not exit with 126/127 when permission denied/ 
command not found. Add extra exception type and generalize
	error handling routines to take that exception type. Use
	a global variable exerrno to keep the last exec error.
 1996-10-16 14:35:42 +00:00
christos
886c875a97 PR/287: Exit with 127/126 when command is not found/permission denied. 
PR/2808: don't bomb out on "set -e; false && true"
 1996-10-16 14:31:57 +00:00
christos
dd6abbc5c3 PR/2808: Handle cd "". This is for systems where "" != "." 1996-10-16 14:29:42 +00:00
christos
aded8d4c14 PR/2808: tokens.def -> tokens.h 1996-10-16 14:24:56 +00:00
christos
3ec8ea2b0e PR/2808: Depend and clean fixes from FreeBSD 1996-10-16 14:23:51 +00:00
thorpej
47f181309b If getcwd() fails, dang it, I want to know _why_. 1996-09-18 22:47:48 +00:00
mycroft
c65b90450d ioctl(TIOC[GS]PGRP) -> tc[gs]etpgrp() 1996-09-17 14:44:05 +00:00
christos
4d9c694460 Apply PR#2721 from VaX#n8: make man page more lucid in places. 1996-09-02 21:28:21 +00:00
christos
29cad877cd Don't infinite loop with: 
unset var
	echo ${var:=}
 1996-09-02 21:25:52 +00:00
christos
beb57fb35d - Add function callback capability when variables are set. 
- Add setvarsafe that returns an error instead of longjmp() to the
  error code.
 1996-06-25 16:49:05 +00:00
christos
cc31700a92 - Add getoptsreset to be used as a callback function when OPTIND is set. 
This is used to implement the POSIX behavior when OPTIND=1
- Call setvarsafe instead of setvar. If one ran
	"getopts optstr badvariable"
  where badvariable contained an illegal variable name, there was no way
  to recover, since setvar() would longjmp on the error.
 1996-06-25 16:47:43 +00:00
christos
02b3c16118 change sethistsize() to take the history size as an argument so it can 
be used directly by the new variable callback functions.
 1996-06-25 16:43:33 +00:00
christos
9a738ef22d const poisoning. 1996-06-25 16:40:38 +00:00
christos
70ad20e9f1 Include header files to get function prototypes; don't use home grown ones. 1996-06-25 16:40:06 +00:00
christos
0bc88b2434 getopts fixes: 
1. OPTIND value was not computed correctly when the argument was part of the
   option string (i.e. for "l:" "-l 1" was working "-l1" was not). (PR/2505).
2. OPTARG was not being unset in case of errors [in the non POSIX error case].
3. optvar could be set to random values.
4. Option string starting with a : was not treated specially as POSIX
   specifies (if the option string starts with a :, then there is no
   error printed when there are missing option arguments or illegal options,
   and OPTARG and optvar are being set specially).
5. Implemented getopts "opts" optvar [arg]. The optional argument case
   was not implemented.

To do:
- what does Posix say about resetting the getopts state? Bash does it
  by setting OPTIND=0; is that correct? Should we be doing the same thing?
- should we be using getopt(3) for everything internal to the shell? Is that
  feasible because we might need to handle multiple invocations at once.
 1996-06-04 21:00:09 +00:00
christos
66824391d1 Fix PR/2504: return with no args returns 0 instead of the return value of 
the previous command in functions
 1996-06-03 12:21:17 +00:00
cgd
edc0ef345c Fix growstackblock() 'newlen' calculations: 
(1) it needs to be ALIGNed for both halves of the 'if,' and
	(2) if you're going to claim that you now have ALIGN(newlen)
	    bytes left, you should have actually allocated
	    ALIGN(newlen), rather than just 'newlen' bytes.
 1996-05-20 14:49:32 +00:00
christos
55a41e8abb Close PR/2384 backquoted backslash-newline was not eaten. 1996-05-09 19:40:08 +00:00
pk
0b9acf16f8 Return zero status if `else' clause is empty. 1996-03-06 14:49:29 +00:00
christos
b09ffc42b1 - parser.c: Fix prompting in old style backquote expansion. Fixes PR/2139 
and many user complaints why the shell hangs in echo "`"
- eval.c:   Fix exitstatus invalid resetting in `if' statements were:
		if (exit 3); then
			echo foo $?
		else
			echo bar $?
		fi
	    printed 'bar 0' instead of bar 3
 1996-03-05 21:03:52 +00:00
jtc
16f5230c39 Changed so that cd builtin doesn't do wierd stuff when cd'ing through 
symlinks.  From Chris Demetriou <cgd@NetBSD.ORG>.  Fixes PR #1776.

Changed so that INTOFF/INTON are paired in getpwd().  From Matthias
Pfaller <leo@marco.de>.  Fixes PR #2130.
 1996-03-01 01:58:58 +00:00
mycroft
b5b9e1d0fa Fix problems with the way init.o is built: 
* Prevent gratuitous rebuilds when nothing has changed.
* Make sure it's rebuilt if a .h file is updated.
From Mike Long, PR 1454.
 1996-02-18 12:29:18 +00:00
christos
d3aec2060d Fix PR/2070: Ksh style variable modifiers were broken in /bin/sh, from 
enami tsugutomo
 1996-02-12 15:11:41 +00:00
christos
ff008dabf6 Fix PR/1760, where 'cd -' before any other command could cause a reference 
to an uninitialized pointer. Use getcwd() to get the current working directory,
instead of forking /bin/pwd [per Scott's suggestion]
 1995-11-19 23:27:37 +00:00
christos
c22dddc4e0 Parallel make fixes. 1995-10-22 00:15:02 +00:00
christos
893ade3fac - fix PR1620, -DNO_HISTORY did not work. 
- restore parsing state after parsing old style command substitution.
  The ';' in '`echo z;`' broke the following:
	for i in 1; do
		cat > /dev/tty << __EOF__
		`echo z;`
		__EOF__
	done

cVS: Enter Log.  Lines beginning with `CVS: ' are removed automatically
 1995-10-19 04:14:37 +00:00
christos
92380da725 fixed previous booboo that broke command line editing input. 1995-10-06 21:38:18 +00:00
christos
c1b02d9bff - Fix -v flag, so that it works properly when the shell reads from scripts. 
- Bad style to fix my own PR, but I'd like to commit the parallel make
  changes soon, and this is a necessary prerequisite.
 1995-09-26 13:25:19 +00:00
jtc
d4fe82df8d Handle %q format directive; from Mike Long (PR #1454). 1995-09-14 16:19:06 +00:00
christos
f9382bca1a Fix return builtin to work like it does in ksh: 
When not in a function, it skips the rest of the current input file.
Instances of `return' outside function definitions were previously ignored.
What does joe posix have to say about this?
[fixes PR/1444]
 1995-09-11 17:05:41 +00:00
christos
782cb68126 Fix bin/1240, from Dennis Ferguson. the exit builtin with no arguments 
should return the exitcode of the previous command but it always returned 0.
 1995-07-20 15:04:16 +00:00
pk
edae5ead03 Relocate pointers after re-allocation of the job table. 1995-07-04 16:26:45 +00:00
jtc
88fc62fe16 Changed type of rlimit values from quad_t to rlim_t. Cast rlim_t's to 
quad_t's and use "%qd" in printf.
Eliminated unneccessary conditional.
 1995-06-12 19:44:16 +00:00
mycroft
332b7d5213 Add a DPADD. 1995-06-10 20:19:40 +00:00
christos
a45947b2a4 Changed so that 'PATH=newpath command' works, instead of looking at the 
old path. Synced input.c with vangogh.
 1995-06-09 01:53:44 +00:00
cgd
dcb82cbdbc needs string.h 1995-06-07 16:28:03 +00:00
christos
9d255ec409 Ignore result of sigaction when setting traps. Traps will succeed even 
on SIGKILL or SIGSTOP. This is what other bourne shells do. (suggested
by mycroft)
 1995-06-07 04:16:57 +00:00
christos
b842cc2784 Avoid trapping SIGKILL. Pretend that we did, so that we will not keep 
failing trying to trap it later. This is what the other bourne shells do.
 1995-06-05 14:24:33 +00:00
christos
58e18fc330 Fixed bug where 
$ cat foo
echo $FOO

$ FOO=1 . ./foo
$ echo $FOO

Did not echo 1 at all. Now variable assignments before sourced scripts
are honored during and after the execution of the script.
 1995-05-28 18:09:48 +00:00
christos
4fb6f609aa Changed so that syntax errors (EXERROR) set the exit status to 2, 
and commands that are not found set the exit status to 1 like all
other bourne shells.
[It used to be 0 and 2 respectively]
 1995-05-19 15:08:55 +00:00
christos
56a08eccca Fixed bug where ${#} was interpreted incorrectly as ${#var} and thus 
misparsed. Keith Bostic reported it.
 1995-05-17 00:05:25 +00:00
cgd
b5f33fc18e re-add an #endif that was (apprently) clobbered. 1995-05-15 03:29:54 +00:00
christos
fbac2e9de2 Fixed new bug the previous fix introduced: 
false
    foo=bar
    echo $?

would print 1
Also fixed the long standing bug:

    false
    echo `echo $?`

would print 0
The exitstatus needs rethinking and rewriting. The trial and error method
is not very efficient
 1995-05-15 02:47:38 +00:00
christos
2e1970487e Fixed bug caused by previous x=false not preserving the exit status fix. 
The if statement exit status broke...
 1995-05-14 04:19:18 +00:00
christos
07bae7eddd Merge in my changes from vangogh, and fix the x=false; echo $? == 0 
bug.
 1995-05-11 21:28:33 +00:00
christos
dae6c6b963 Added missing resource limits and recognize "unlimited" as RLIM_INFINITY 1995-04-11 03:17:45 +00:00
christos
df504509f1 1. Don't core dump on 'fc -l' (From Gerard J van der Grinten) 
2. PATH=xxx ls, does the PATH assignment first and then tries to find ls in xxx
3. VAR=xxx exec ls, does the variable assignment.
 1995-03-31 21:58:09 +00:00
christos
6ee2193d9a Reverted to set - turning off -x and -v. Charles corrected me... It is part 
of POSIX.
 1995-03-26 17:25:10 +00:00
christos
ad1f891148 set - 
does not anymore clear the -x and -v flags. This was incompatible with
all other bourne shell implementations.
 1995-03-25 23:45:24 +00:00
mycroft
6bfd77e432 Fix typo in previous. 1995-03-23 00:01:03 +00:00
mycroft
3e417cced4 Use sigprocmask(), not sigsetmask(). 1995-03-21 15:40:16 +00:00
cgd
49f0ad8601 convert to new RCS id conventions. 1995-03-21 09:01:59 +00:00
christos
5c42185b5c Oops... typo in the IFS previous fix. 1995-02-28 23:27:24 +00:00
christos
6ab1954578 Changed so that backquote expansion eats all trailing newlines, not just 
the last one.
Reported by guido@gvr.win.tue.nl (Guido van Rooij).
Repeat By:

	echo "`cat file-with-many-newlines`"
 1995-02-28 23:09:43 +00:00
christos
3936aab031 Changed IFS string-splitting so that it breaks spaces even when IFS does not 
begin with a space, but contains one. Fixes PR bin/809.

        #!/bin/sh
        list="a  b c "
        echo "With ordinary IFS"
        for i in $list;do
            echo $i
        done
        IFS=":${IFS}"
        echo "With changed IFS"
        for i in $list;do
            echo $i
        done

Note that before the fix ":${IFS}" behaved differently than "${IFS}:".
 1995-02-28 22:46:12 +00:00
mycroft
f5ad44b6ac Use S_IS*(). 1995-01-30 19:30:13 +00:00
christos
ad8d5369f5 I added the documented in the manual but not implemented variable expansions: 
${#WORD}
    ${WORD%PAT}
    ${WORD%%PAT}
    ${WORD#PAT}
    ${WORD##PAT}
 1995-01-23 06:33:03 +00:00
mycroft
4d643bf207 Remove `.' from default PATH. 1995-01-20 18:21:16 +00:00
mycroft
c4459d08d9 Clean up deleted files. 1995-01-15 10:15:19 +00:00
mycroft
4bcd14e0b4 Remove the gratuitous `security' warning. 1995-01-15 09:29:16 +00:00
jtc
cc9fe5ba6d Describe the : shell builtin. 
Fixes PR #712.
 1995-01-12 23:35:56 +00:00
mycroft
e848bd4fb5 Fix that last bug in a less expensive way. 1994-12-31 23:56:54 +00:00
cgd
809218efc4 take two: make grabstackstr() work correctly, in the face of strange filling. 1994-12-31 01:56:16 +00:00
mycroft
1c21834ccb Remove previous misguided change. 1994-12-30 06:33:59 +00:00
cgd
58f1733118 be more careful with casts. 1994-12-23 13:24:39 +00:00
cgd
42f0dae5e3 pull prototypes into scope for string functions. 1994-12-23 13:24:10 +00:00
cgd
17ed2a67b2 pull some prototypes into scope. 1994-12-23 13:22:13 +00:00
cgd
e9aebcc9d8 don't play fast and loose with memory block allcation. try to allocate 
in more-round sizes, but realize that not everybody will fill them up
exactly.
 1994-12-23 13:21:01 +00:00
cgd
db1ae625b5 eliminate two wrong-sized variables which were unused. 1994-12-23 13:20:10 +00:00
cgd
73cf954189 adjust; from jimj. 1994-12-06 19:13:02 +00:00
cgd
4ce0d34a31 clean up further. more patches from Jim Jegers 1994-12-05 19:07:32 +00:00
cgd
5dad143982 from James Jegers <jimj@miller.cs.uwm.edu>: quiet -Wall, and squelch 
some of the worst style errors.
 1994-12-04 07:11:37 +00:00
jtc
6cd3ad1d11 ulimit builtin (PR #388) 
This public domain code, originally by Doug Gwyn, Doug Kingston, Eric
Gisin, and Michael Rendell was ripped from pdksh 5.0.8 and hacked for
use with ash.
 1994-11-04 17:13:27 +00:00
mycroft
06f53b6838 Eliminate uses of some obsolete functions. 1994-09-23 11:28:39 +00:00
mycroft
d22a514772 Fix problem with character classes matching a terminating NUL, from Henry 
Spencer.
 1994-08-29 01:54:39 +00:00
mycroft
08a6730054 Fix a core dump and another parse error related to null commands. 1994-08-24 05:48:26 +00:00
jtc
8cc67c8556 Don't source the file specified by $ENV if either the real and effective 
user IDs or the real and effective group IDs of the process are different.
Thanks to Mark Weaver who pointed this out in PR 262.
 1994-08-03 16:25:26 +00:00
jtc
7acf86db2f Don't dump core when evaluating X % 0. 
Simplify lexer by using %prec feature in yacc grammar.
Implement most of the operators required by POSIX.2.
 1994-07-15 23:45:30 +00:00
mycroft
aaed410145 Fix some problems with empty commands. 1994-07-07 20:53:32 +00:00
mycroft
188b97d955 Bandaid quoting. 1994-07-07 16:24:34 +00:00
mycroft
32a94e53c4 Clean up deleted files. 1994-06-24 07:33:21 +00:00
jtc
4aece6a461 Renamed builtins to builtins.def to eliminate make's (incorrect) circular 
dependancy between the builtins data file and builtins.c.

The bug only occured when there was no obj directory, and is a result of
NetBSD's better (compared to 4.4lite's) default make rules.

Fixes bug #301.
 1994-06-24 07:33:12 +00:00
mycroft
2efb881840 Re-fix an old bug. 1994-06-15 04:13:46 +00:00
jtc
918ce04f57 From Christos: 
1. Fix `-' quoting in [ ] expressions.
  2. Fix expansion of variables in redirections
 1994-06-14 05:49:19 +00:00
jtc
212ba62f56 Set the status variable ($?) to 0 after a successful variable assignment. 1994-06-12 02:31:28 +00:00
mycroft
cafd1f7e9f Add RCS ids. 1994-06-11 16:11:35 +00:00
jtc
7210460c54 Fix from Christos for when NO_HISTORY is defined 1994-06-08 19:26:51 +00:00
pk
cefd9f107c Exclude mkinit' from argument list to mkinit'; this especially causes 
trouble when compiling with `-g'.
 1994-06-02 09:10:58 +00:00