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217 Commits

Author SHA1 Message Date
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
jtc
20ddd6eee4 Fixed another case statement parsing bug that was introduced by my 
last fix :-(.  Thanks to Theo for letting me know about it...
 1994-06-01 21:36:54 +00:00