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52 Commits

Author SHA1 Message Date
itojun 31952d578f make sure we do not truncate arith expresssion > 10 digits. 
freebsd bin/sh/expand.c revision 1.15.  NetBSD PR 13943.
 2001-09-19 06:38:19 +00:00
mycroft 59771e308b Globbing should match broken symlinks. stat()->lstat() to fix this. 2001-03-30 17:45:00 +00:00
christos 3380980447 remove redundant declarations and nexted externs. 2001-02-04 19:52:06 +00:00
soren 1594850f00 Fix doubled 'the' in comment. 2000-03-13 22:46:59 +00:00
christos 3d42469030 compile with WARNS = 2 1999-07-09 03:05:49 +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
christos 28607542af PR/7231: Havard Eidnes: Shell quoting/trimming problem 1999-03-26 15:49:34 +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
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
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
mycroft ee9e50eacb Be more retentive about use of NOTREACHED and noreturn. 1998-07-28 11:41:40 +00:00
mycroft 5dd823ab5d const poisoning. 1998-07-26 19:44:12 +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 ce0d4f06a6 Previous fix broke $var quoting. Try again differently :-) 1998-02-17 00:16:16 +00:00
christos f7c8df6d68 Fix bug introduced by EXP_RECORD, where in case there was a variable expansion 
involved in the `for' list, the list was recorded twice, leading to incorrect
argument expansion.
Introduce ifsfree() function that free's the IFS region list, GC'ing duplicated
code.
 1998-02-05 08:32:00 +00:00
christos 5a36c00160 PR/4851: Benjamin Lorenz: In the "for <var> in <args>" construct <args> 
was not marked as a region to be handled by ifsbreakup. Add EXP_RECORD
to indicate that the argument string needs to be recorded.
 1998-01-31 12:45:06 +00:00
christos 505573954e Unfortunately (as I expected) the previous change broke: 
sleep
    cmd='set `type "sleep"`; eval echo \$$#'
    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 b7e4df7784 PR/4547: Joern Clausen: Incorrect argument expansion in backquote variable 
assignment. E.g.
	echo ${foo:=`echo 1 2 3 4`}
prints:
	1 2 3 1 2 3 4
because when the arquments are not quoted, the backquote result
gets recorded twice.  The fix right now is to comment out the
record_region() call in expbackq().  I hope that it does not break
anything else.
 1997-11-30 20:57:33 +00:00
phil 64eb899e5a Make code agree with man page in processing expansion of "$*". 
Fix from PR 2647.
 1997-07-07 20:41:10 +00:00
christos cd799663e4 Fix compiler warnings. 1997-07-04 21:01:48 +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 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 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
tls 48250187e6 kill 'register' 1997-01-11 02:04:27 +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
christos 4b99c4d748 PR/2808: Fix parsing of $n where n > 9 (from FreeBSD) 1996-10-16 14:38:58 +00:00
christos 29cad877cd Don't infinite loop with: 
unset var
	echo ${var:=}
 1996-09-02 21:25:52 +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 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 07bae7eddd Merge in my changes from vangogh, and fix the x=`false`; echo $? == 0 
bug.
 1995-05-11 21:28:33 +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
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
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
mycroft d22a514772 Fix problem with character classes matching a terminating NUL, from Henry 
Spencer.
 1994-08-29 01:54:39 +00:00
mycroft cafd1f7e9f Add RCS ids. 1994-06-11 16:11:35 +00:00
jtc a81e412494 Include appropriate header files to bring function prototypes into scope. 1994-05-12 17:03:32 +00:00
jtc 37ed7877b2 sync with 4.4lite 1994-05-11 17:09:42 +00:00
mycroft c823b55cfa Last patch was wrong; just save argbackq around the argstr() call. 1993-10-22 13:32:22 +00:00
mycroft 718ac53f6f evalvar(): If subtype is VSASSIGN (or VSQUESTION), argstr() already rolled 
forward the backquote queue.  If VSQUESTION it doesn't matter because we
already exited with an error.
 1993-10-22 13:20:02 +00:00
mycroft 8542364e07 Add RCS identifiers. 1993-08-01 18:49:50 +00:00
sef 5916a08554 Jim "wilson@moria.cygnus.com" Wilson's patches to make C News (and other 
things) work.
 1993-05-02 01:28:40 +00:00
cgd 06be60083d changed "Id" to "Header" for rcsids 1993-03-23 00:22:59 +00:00