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236 Commits

Author SHA1 Message Date
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