* Bug in ${(Q)...} @ 2003-07-13 2:38 Philippe Troin 2003-07-13 17:24 ` Bart Schaefer 0 siblings, 1 reply; 3+ messages in thread From: Philippe Troin @ 2003-07-13 2:38 UTC (permalink / raw) To: zsh-workers % emulate -R zsh % setopt extended_glob % echo $ZSH_VERSION "<${(Q)${$(print hello)/%hello#}}>" 4.0.6 < > Shouldn't that be: 4.0.6 <> (no space) But note that: % echo $ZSH_VERSION "<${(Q)$(print hello)/%hello#}>" 4.0.6 <> And that sounds good. Phil. ^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: Bug in ${(Q)...} 2003-07-13 2:38 Bug in ${(Q)...} Philippe Troin @ 2003-07-13 17:24 ` Bart Schaefer 2003-07-17 9:32 ` Peter Stephenson 0 siblings, 1 reply; 3+ messages in thread From: Bart Schaefer @ 2003-07-13 17:24 UTC (permalink / raw) To: zsh-workers On Jul 12, 7:38pm, Philippe Troin wrote: } Subject: Bug in ${(Q)...} } } % setopt extended_glob } % echo $ZSH_VERSION "<${(Q)${$(print hello)/%hello#}}>" } 4.0.6 < > } } Shouldn't that be: } 4.0.6 <> } } (no space) This is indeed a bug. No process substitution required: schaefer<501> x=(hello) schaefer<502> setopt extendedglob schaefer<503> echo $ZSH_VERSION "<${(Q)${${x}/%hello#}}>" 4.1.1-dev-1 < > But it's not arrays, either, which I initially thought it was: schaefer<505> x=hello schaefer<506> echo $ZSH_VERSION "<${(Q)${${x}/%hello#}}>" 4.1.1-dev-1 < > schaefer<507> echo $ZSH_VERSION "<${(Q)${x/%hello#}}>" 4.1.1-dev-1 < > So I'm not sure if this is really a problem with (Q) in paramsubst(), or if it's deeper, in parse_subst_string(), and it just happens that (Q) makes it visible. ^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: Bug in ${(Q)...} 2003-07-13 17:24 ` Bart Schaefer @ 2003-07-17 9:32 ` Peter Stephenson 0 siblings, 0 replies; 3+ messages in thread From: Peter Stephenson @ 2003-07-17 9:32 UTC (permalink / raw) To: zsh-workers Bart Schaefer wrote: > On Jul 12, 7:38pm, Philippe Troin wrote: > } Subject: Bug in ${(Q)...} > } > } % setopt extended_glob > } % echo $ZSH_VERSION "<${(Q)${$(print hello)/%hello#}}>" > } 4.0.6 < > > } > } Shouldn't that be: > } 4.0.6 <> > } > } (no space) > > So I'm not sure if this is really a problem with (Q) in paramsubst(), or > if it's deeper, in parse_subst_string(), and it just happens that (Q) > makes it visible. I think the fix is the following. I've never quite followed the logic of using a string consisting only of a Nularg to represent an empty string, but it occurs sporadically. Index: Src/lex.c =================================================================== RCS file: /cvsroot/zsh/zsh/Src/lex.c,v retrieving revision 1.24 diff -u -r1.24 lex.c --- Src/lex.c 6 Oct 2002 18:38:14 -0000 1.24 +++ Src/lex.c 17 Jul 2003 09:29:06 -0000 @@ -1512,7 +1512,7 @@ { int c, l = strlen(s), err, olen; - if (! *s) + if (!*s || !strcmp(s, nulstring)) return 0; lexsave(); untokenize(s); -- Peter Stephenson <pws@csr.com> Software Engineer CSR Ltd., Science Park, Milton Road, Cambridge, CB4 0WH, UK Tel: +44 (0)1223 692070 ********************************************************************** The information transmitted is intended only for the person or entity to which it is addressed and may contain confidential and/or privileged material. Any review, retransmission, dissemination or other use of, or taking of any action in reliance upon, this information by persons or entities other than the intended recipient is prohibited. If you received this in error, please contact the sender and delete the material from any computer. ********************************************************************** ^ permalink raw reply [flat|nested] 3+ messages in thread
end of thread, other threads:[~2003-07-17 9:32 UTC | newest] Thread overview: 3+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2003-07-13 2:38 Bug in ${(Q)...} Philippe Troin 2003-07-13 17:24 ` Bart Schaefer 2003-07-17 9:32 ` Peter Stephenson
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