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* [BUILTIN] Return without arguments in a trap should use status outside trapsHerbert Xu2014-10-06
| | | | | | | | | | | | | POSIX now requires that return without arguments in a trap should return the last command status prior to executing traps. This patch implements this behaviour. Incidentally this also changes the behaviour of return without arguments in a loop conditional to use the last exit status in the body as opposed to the last command in the conditional when there is one. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* [BUILTIN] Allow return in loop conditional to set exit statusHerbert Xu2014-10-06
| | | | | | | | | | | | | | | | | | https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=332954 When return is used in a loop conditional the exit status will be lost because we always set the exit status at the end of the loop to that of the last command executed in the body. This is counterintuitive and contrary to what most other shells do. This patch fixes this by always preserving the exit status of return when it is used in a loop conditional. The patch was originally written by Gerrit Pape <pape@smarden.org>. Reported-by: Stephane Chazelas <stephane_chazelas@yahoo.fr> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* [EVAL] Move common skipcount logic into skiploopHerbert Xu2014-10-06
| | | | | | | | The functions evalloop and evalfor share the logic on checking and updating skipcount. This patch moves that into the helper function skiploop. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* [BUILTIN] Do not allow break to break across function callsHerbert Xu2014-10-06
| | | | | | | | | | | As it is if you do a multi-level break inside a function it'll actually include loops outside of the function call. This is counterintuitive. This patch changes this by saving and resetting loopnest when entering a function. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* [BUILTIN] Exit without arguments in a trap should use status outside trapsHerbert Xu2014-10-06
| | | | | | | | POSIX now requires that exit without arguments in a trap should return the last command status prior to executing traps. This patch implements this behaviour. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* [EVAL] Do not clobber exitstatus in evalcommandHerbert Xu2014-10-03
| | | | | | | | | | All originators of EXERROR have been setting the exitstatus for a while now. So it is no longer appropriate to set it explicitly in evalcommand. In fact doing so may cause the original exitstatus to be lost. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* [ERROR] Set exitstatus in onintHerbert Xu2014-10-02
| | | | | | | | | | | | Currently the exit status when we receive SIGINT is set in evalcommand which means that it doesn't always get set. For example, if you press CTRL-C at the prompt of an interactive dash, the exit status is not set to 130 as it is in many other Bourne shells. This patch fixes this by moving the setting of the exit status into onint which also simplifies evalcommand. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* [TRAP] Make sure evalskip is zero before running trapsHerbert Xu2014-10-02
| | | | | | | | | | | | | | | | | | | | | | | As it is if dotrap is called with evalskip set to a nonzero value, it'll try to execute any set traps. The result is that the first command in the first set trap will be executed while the rest of the trap will be silently ignored due to evalskip. This is highly counterintuitive, even though both bash and ksh exhibit a similar behaviour. This patch fixes it by skipping trap processing if evalskip is set on entry. It also adds a dotrap call to the top of evaltree to ensure that while continue; do continue; done has a chance of running traps. Finally the pendingsigs check is moved into dotrap for compactness. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* [EVAL] Fix use-after-free in dotrap/evalstringHerbert Xu2014-10-02
| | | | | | | | | | | The function dotrap calls evalstring using the stored trap string. If evalstring then unsets that exact trap string then we will end up using freed memory. This patch fixes it by making evalstring always duplicate the string before using it. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* [BUILTIN] Merge SKIPFUNC/SKIPFILE and only clear SKIPFUNC when leaving dotcmdHerbert Xu2011-07-09
| | | | | | | | | | | | | | | | Currently upon leaving a dotcmd the evalskip state is reset so if a continue/break statement is used within a dot script it would have no effect outside of the dot script. This is inconsistent with other shells. This patch is based on one by Jilles Tjoelker and only clears SKIPFUNC when leaving a dot script. As a result continue/break will remain in effect. It also merges SKIPFUNC/SKIPFILE as they have no practical difference. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* [EVAL] Avoid using undefined handlerJim Meyering2011-07-08
| | | | | | | | | | * src/eval.c (evalbltin, evalfun): Set savehandler before calling setjmp with the possible "goto *done", where savehandler is used. Otherwise, clang warns that "Assigned value is garbage or undefined" at the point where "savehandler" is used on the RHS. Signed-off-by: Jim Meyering <meyering@redhat.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* [SHELL] Optimize dash -c "command" to avoid a forkHerbert Xu2011-07-07
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | On Sun, Apr 10, 2011 at 07:36:49AM +0000, Jonathan Nieder wrote: > From: Jilles Tjoelker <jilles@stack.nl> > Date: Sat, 13 Jun 2009 16:17:45 -0500 > > This change only affects strings passed to -c, when the -s option is > not used. > > Use the EV_EXIT flag to inform the eval machinery that the string > being passed is the entirety of input. This way, a fork may be > omitted in many special cases. > > If there are empty lines after the last command, the evalcmd will not > see the end early enough and forks will not be omitted. The same thing > seems to happen in bash. > > Example: > sh -c 'ps lT' > No longer shows a shell process waiting for ps to finish. > > [jn: ported from FreeBSD SVN r194128. Bugs are mine.] > > Signed-off-by: Jonathan Nieder <jrnieder@gmail.com> Instead of detecting EOF using the input layer, I'm going to use the parser instead. In either case, we always have to read ahead in order to complete the parsing of the previous node. Therefore we always know whether there is more to come, except in the case where we see a newline/semicolon or similar. For the purposes of sh -c, this should be sufficient. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* [EVAL] Remove unused EV_BACKCMD flagJonathan Nieder2011-07-07
| | | | | | | | | | | | | | | | | | | | | The original ash defered forking commands in backquotes so builtins could be run in the same context as the shell. This behavior was controlled using the EV_BACKCMD to evaltree. Unfortunately, as Matthias Scheler noticed in 1999 (NetBSD PR/7814), the result was counterintuitive; for example, echo "`cd /`" would change the cwd. So ash 0.3.5 left out that optimization. The EV_BACKCMD codepath stayed around, unused. Some time between ash 0.3.5-11 and ash 0.3.8-37, Debian ash omitted the EV_BACKCMD pathway by guarding it with #ifdef notyet. In dash 0.5.1 and later, the commented code is no more. Let's finish the job and remove the last vestiges. If someone wants to work on omitting the fork in backcmd, the remaining hints are not going to be very helpful, anyway. Signed-off-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* [SHELL] Improve LINENO supportHarald van Dijk2011-03-15
| | | | | | | | | | | | This patch improves LINENO support by storing line numbers in the parse tree, for commands as well as for function definitions. It makes LINENO behaves properly when calling functions, and has the added benefit of improved line numbers in error messages when the last-parsed command is not the last-executed one. It removes the earlier LINENO support, and instead sets LINENO from evaltree when a command is executed Signed-off-by: Harald van Dijk <harald@gigawatt.nl> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* [EVAL] Let funcnode refer to a function definition, not its first commandHarald van Dijk2011-03-15
| | | | | | | | | | | | It is not unrelated: I changed the meaning of struct funcnode's field n to refer to the function definition, rather than the list of the function's commands, because I needed to refer to the function definition node from evalfun, which only gets passed a funcnode. But it is something that could be applied independently (without being useful by itself), so I've attached it as a separate patch for easier review. Signed-off-by: Harald van Dijk <harald@gigawatt.nl> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* [EXPAND] Free IFS state in evalbackcmdHerbert Xu2010-11-28
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | On Sun, Nov 07, 2010 at 04:04:20PM -0600, Jonathan Nieder wrote: > > Herbert Xu wrote: > > > commit f42e443bb511ed3224f09b4fcf0772438ebdbbfa > > Author: Herbert Xu <herbert@gondor.apana.org.au> > > Date: Wed Sep 8 20:07:26 2010 +0800 > > > > [EXPAND] Fix ifsfirst/ifslastp leak > > Another puzzle bisecting to f42e443bb. This one comes from the > grub-mkconfig script: > > $ sh -c 'datadir=/usr/share; pkgdatadir=${datadir}/`cat`' 2>&1 | cat -A > cat: M-^\^M^F^HM-4^M^F^HM-(^M^F^H: No such file or directory$ > cat: M-(^M^F^H: No such file or directory$ > > Still reproducible with 016b529. I'll try to find time to look into > it, but thought you might like to know nevertheless. This is the symptom of another leak. In this case evalbackcmd occurs in the middle of an expansion (as it should) but the forked child never clears the previous IFS state. This patch adds the missing ifsfree call. This wasn't as much of a problem as the previously discovered leaks since all it means is that the child gets to carry around the parent's expansion state and the child is usually short-lived. Reported-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* [BUILTIN] Use EXEXIT in place of EXEXECJonathan Nieder2010-11-28
| | | | | | | | | | | | | | | | | | | | | | The intended semantics of EXEXEC are identical to EXEXIT, so simplify by using EXEXIT directly. Functional change: in edge cases (exec within a trap handler), this causes the exit status from exec not to be clobbered. For example, without this patch: $ sh -c 'trap "exec nonexistent" EXIT'; echo $? exec: 1: nonexistent: not found 0 And with it: $ sh -c 'trap "exec nonexistent" EXIT'; echo $? exec: 1: nonexistent: not found 127 Signed-off-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* [ERROR] Allow the originator of EXERROR to set the exit statusHerbert Xu2010-11-28
| | | | | | | | Some errors have exit status values specified by POSIX and it is therefore desirable to be able to set the exit status at the EXERROR source rather than in main.c. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* [EVAL] Fixed trap/return regression due to SKIPEVAL removalHerbert Xu2010-11-28
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | On Wed, Aug 11, 2010 at 08:06:16AM +0000, Guido Berhoerster wrote: > > with the latest git version of dash trap actions are not > evaluated in the context of a function. > > The following script demonstrates the bug: > ----8<---- > read_timeout () { > saved_traps="$(trap)" > trap 'printf "timed out\n"; eval "${saved_traps}"; return' TERM > ( sleep $1; kill -TERM $$ ) >/dev/null 2>&1 & > timer_pid=$! > read $2 > kill $timer_pid 2>/dev/null > } > > read_timeout 5 value > printf "read \"%s\"\n" "${value:=default}" > > ---->8---- > The return statement in the trap inside the read_timeout function > does not return from the function but rather exits the script. > > With dash 0.5.5.1 it works as expected. This bug was caused by the SKIPEVAL removal. When the SKIPEVAL hack was added to improve set -e support in traps, dotrap was changed to return whether set -e was detected. After the removal of SKIPEVAL, set -e is now handled through exraise. However, dotrap still returned a value which is now incorrectly used to trigger an exraise. This patch removes the vestigial link between dotrap and exraise. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* [BUILTIN] Fix EXEXEC status clobberingHerbert Xu2010-10-07
| | | | | | | | | | | evalcommand always clobbers the exit status in case of an EXEXEC which means that exec always fails with exit status 2 regardless of what it actually returns. This patch adds the missing check for EXEXEC so that the correct exit status is preserved. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* [EVAL] Check exit for eval NSUBSHELLGerrit Pape2010-07-06
| | | | | | | | | | | | | | | Example: $ dash -c 'set -e; (false); echo here' here With this commit, dash exits 1 before echo. The bug was reported by Stefan Fritsch through http://bugs.debian.org/514863 Signed-off-by: Gerrit Pape <pape@smarden.org> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* [EVAL] Removed dead code for eval NPIPEHerbert Xu2010-07-06
| | | | | | The notyet code is identical to the current code. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* [EVAL] Don't clear eflag in evalbackcmdGerrit Pape2010-06-28
| | | | | | | | | | | | | | | | | | | | | | According to http://www.opengroup.org/onlinepubs/009695399/utilities/xcu_chap02.html#tag_02_12 "A subshell environment shall be created as a duplicate of the shell environment, except that signal traps set by that shell environment shall be set to the default values." Currently the eflag is cleared when forking a subshell, e.g. $ dash -c 'set -e ; z=$(false;echo foo) ; echo $z' foo With this commit the eflag is preserved for subshells, and dash exits 1 before echo. The problem was reported by Vincent Lefevre through http://bugs.debian.org/514863 Signed-off-by: Gerrit Pape <pape@smarden.org> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* [EVAL] Force fork if any trap is set, not just on EXITJilles Tjoelker2010-05-27
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | In some cases the shell executes a subshell or an external command in the current process. This is not done if a trap on EXIT has been set, so that that trap can execute after the subshell or external command has finished. Extend that check to all traps. (A trap is "set" if a non-empty command string has been attached to it.) Improve encapsulation by exporting an accessor function for this and making the trap array static again. This is much like FreeBSD SVN r194127, enhanced to apply to subshells also (see FreeBSD SVN r194774). Example: dash -c '{ trap "echo moo" TERM; sleep 3; }& sleep 1; kill $!;wait' This should print "moo" after 3 seconds. Example: dash -c '{ trap "echo moo" TERM; (sleep 3) }& sleep 1; kill $!;wait' The same. Example: dash -c '{ trap "echo moo" TERM; sleep 3; :; }& sleep 1; kill $!;wait' This works correctly even without this patch. Signed-off-by: Jilles Tjoelker <jilles@stack.nl> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* [REDIR] Fix popredir on abnormal exit from built-inHerbert Xu2010-05-27
| | | | | | | | | Just like the poplocalvar problem recently fixed, redirections can also be leaked in case of an abnormal exit. This patch fixes it using the same method as poplocalvar, by storing the previous redirection state and restoring to that point. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* [REDIR] Move null redirect checks into callerHerbert Xu2010-05-27
| | | | | | | | | The null redirect checks were added as an optimisation to avoid unnecessary memory allocations. However, we could avoid this completely by simply making the caller avoid making a redirection unless it is not null. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* [VAR] Do not poplocalvars prematurely on regular utilitiesHerbert Xu2010-05-27
| | | | | | | | | | | The recent cmdenviron removal broke regular utilities by calling poplocalvars too early. This patch fixes that by postponing the poplocalvars for regular utilities until they have completed. In order to ensure that local still works, it is now a special built-in. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* [VAR] Fix poplocalvar on abnormal exit from functionHerbert Xu2010-05-27
| | | | | | | | | | The new localvar code broke the abnormal exit from functions and built-ins by not restoring the original localvar state. This patch fixes this by storing the previous localvar state so that we always unwind correctly in case of an abnormal exit. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* [VAR] Replace cmdenviron with localvarsHerbert Xu2010-05-26
| | | | | | | | | | This patch replaces the cmdenviron mechanism for temporary command variables with the localvars mechanism used by functions. This reduces code size, and more importantly, makes the variable assignment take effect immediately as required by POSIX. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* [VAR] Add localvars nestingHerbert Xu2010-05-26
| | | | | | | This patch adds localvars nesting infrastructure so we can reuse the localvars mechanism for command evaluation. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* [EVAL] Fix command -- crashGerrit Pape2010-05-03
| | | | | | | | | | | | | | | parse_command_args() returning a **argv pointer with *argv == 0 makes dash segfault in find_command(). To reproduce run dash -c 'command --' With this commit, parse_command_args() returns 0 if *argv is null after parsing --, and so fixes the subsequent segfault. Reported by Jonny through http://bugs.debian.org/579543 Signed-off-by: Gerrit Pape <pape@smarden.org> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* [EVAL] Revert SKIPEVAL into EXEXITHerbert Xu2009-08-11
| | | | | | | Now that eval handles EV_TESTED correctly, we can remove the SKIPEVAL hack and simply use EXEXIT for set -e. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* [EVAL] Pass EV_TESTED into evalcmdHerbert Xu2009-08-11
| | | | | | | | | | | | | | | | | | This patch fixes the case where the eval command is used with set -e and as part of a construct that should not cause the shell to abort, e.g., as part of the condition of an if statement. This is achieved by propagating the EV_TESTED flag into the evalstring function through evalcmd. As this alters the prototype of evalcmd it is now invoked explicitly by evalbltin. The built-in infrastructure has been changed to accomodate this special case. In order to ensure that the EXIT trap is properly executed this patch clears evalskip in exitshell. This wasn't needed before because of the broken way evalstring worked where it always clears evalskip when called by minusc. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* [SIGNAL] Remove EXSIGHerbert Xu2009-02-22
| | | | | | Now that waitcmd no longer uses EXSIG we can remove it. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* [BUILD] Fixed build on OS XMark Mentovai2009-01-13
| | | | | | | | | | | | | | | | | | | | Hi, Herbert and friends. I've created a small patch that allows dash to be built on Mac OS X. I'm contributing it here with the hope that it's suitable for inclusion in dash. The changes in this patch are: - __attribute__((__alias__())) is not supported, add an autoconf check - open64 is not present although the stat64 family is, separate the autoconf checks - A syntax error had slipped into a non-glibc codepath - mkbuiltins had a nonportable mktemp invocation for the case where tempfile is not availalble Nothing in this patch is actually Mac OS X-specific, so it might aid portability to other platforms as well. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* [EVAL] Fix bad pointer arithmetic in evalcommandSteve Langasek2007-12-23
| | | | | | | | | | | | | | | | dash dies on sparc with a SIGBUS due to an arithmetic error introduced with commit 03b4958, this patch fixes it. --- > Hi Gerrit, > > dash 0.5.4-3 dies on sparc with a SIGBUS due to an arithmetic error > introduced with the patch > 0030-EXEC-Fixed-execing-of-scripts-with-no-hash-bang.diff. The > attached > patch fixes the problem. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* [EXPAND] Removed herefd hackHerbert Xu2007-11-11
| | | | | | | | | | | The herefd hack goes back more than a decade. it limits the amount of memory we have to allocate when expanding here-documents by writing the result out from time to time. However, it's no longer safe because the stack is used to place intermediate results too and there we certainly don't want to write them out should we be short on memory. In any case, with today's computers we can afford to keep the entire result in memory and write them out at the end.
* [SHELL] Replace shared illnum message by badnum function.Herbert Xu2007-10-17
| | | | | | This patch adds the badnum function and uses it to mostly replace the use of illnum except in miscbltin where the current code turns out to be smaller because of the twin sh_error calls.
* [EXEC] Fixed execing of scripts with no hash-bangHerbert Xu2007-10-15
| | | | | | | | | | | | | | | | | | | | | | | | | | The function tryexec used the original name instead of the path found through PATH search. This patch fixes that. Test case: trap 'rm -f $TMP' EXIT TMP=$(tempfile -s nosuchthing) cat <<- EOF > $TMP echo OK EOF chmod u+x $TMP cd / PATH=${TMP%/*} ${TMP##*/} Old result: /bin/sh: Can't open filelgY4Fanosuchthing New result: OK
* [EXPAND] Move parse-time quote flag detection to run-timeHerbert Xu2007-09-25
| | | | | | | | | | | | | | | | | | | | Because the parser does not recursively parse parameter expansion with respect to quotes, we can't accurately determine quote status at parse time. This patch works around this by moving the quote detection to run-time where we do interpret it recursively. Test case: foo=\\ echo "<${foo#[\\]}>" Old result: <\> New result: <>
* [EVAL] Use dup2 instead of copyfd in evalbackcmdHerbert Xu2007-05-06
| | | | Since we know that dup2 must succeed here we can call it directly.
* [EVAL] Make eval with empty arguments return 0 Herbert Xu2006-01-12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | On Tue, Jan 10, 2006 at 10:56:23AM +0000, Gerrit Pape wrote: > tags 347232 + patch > quit > > On Mon, Jan 09, 2006 at 04:29:19PM +0100, Marco Nenciarini wrote: > > The problem is here: > > > > # Set the kernel 2.6 option only for fresh install > > test -z "$(GetMenuOpt "kopt" "")" && kopt_2_6="root=$root_device_2_6 ro" > > > > # Extract options for specific kernels > > eval $(ExtractMenuOpts "\(kopt_[a-zA-Z0-9_]\+\)") > > > > If the first test fails and the eval argument is empty then dash > > terminate with exitcode 1. > > > This is a simple testcase: > > tm:~# bash -c "set -e ;/bin/false && : ; eval ''; echo 'END'"; echo $? > > END > > 0 > > tm:~# dash -c "set -e ;/bin/false && : ; eval ''; echo 'END'"; echo $? > > 1 > > > > if you insert any command with successfull exit status before the > > empty eval, all work ok: > > tm:~# bash -c "set -e ;/bin/false && : ; : ; eval ''; echo 'END'"; echo $? > > END > > 0 > > tm:~# dash -c "set -e ;/bin/false && : ; : ; eval ''; echo 'END'"; echo $? > > END > > 0 > > Yes, I can confirm this is a bug in dash. The standard says > > EXIT STATUS > > If there are no arguments, or only null arguments, eval shall > return a zero exit status; otherwise, it shall return the exit > status of the command defined by the string of concatenated > arguments separated by <space>s. > > Hi Herbert, please see http://bugs.debian.org/347232 Changed evalstring to return the exit status instead of evalskip. This allows us to return zero if the string is empty.
* Copyright/licence updates and remove all traces of sys/cdefs.hHerbert Xu2005-10-29
| | | | | | | | | | | This change updates the BSD licence to the three-clause version since NetBSD has already done so. This makes dash GPL-compatible. It also adds Christos Zoulas (NetBSD ash maintainer) to the COPYING file. I've added "copyright by Herbert Xu" to most files. Finally all CVS IDs and inclusion of sys/cdefs.h have been removed. The latter is needed for support of klibc.
* Added eflag fixes for trap and minusc.herbert2005-09-26
| | | | | | Let evaltree handle traps from cmdloop. Reset evalskip after minusc is executed. Stop executing traps once SKIPEVAL is seen.
* Removed unnecessary inclusion of main.h from eval.c.herbert2005-09-26
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* Turn evalskip into a bit field.herbert2005-09-26
| | | | This allows SKIPEVAL and SKIPFUNC to coexist which is needed for eval return 1.
* Renamed error to sh_error.herbert2005-09-26
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* Only set skipcount for break and continue.herbert2005-09-26
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* Update funcnest atomically.herbert2005-09-26
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* Replaced EXEVAL with SKIPEVAL.herbert2005-09-26
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