From: Sven Wischnowsky <wischnow@informatik.hu-berlin.de>
To: zsh-workers@sunsite.auc.dk
Subject: Re: PATCH: small parameter fix
Date: Tue, 9 Mar 1999 09:19:12 +0100 (MET) [thread overview]
Message-ID: <199903090819.JAA12538@beta.informatik.hu-berlin.de> (raw)
In-Reply-To: Peter Stephenson's message of Mon, 08 Mar 1999 16:55:08 +0100
Peter Stephenson wrote:
> in particular it has this effect:
>
> % print "${$(uname -n)[1]}"
> ibmth
>
> where you might guess $(...) in quotes produced a scalar for subscripting
> --- indeed it did, but the subscripting decided to treat it as an array
> element. In fact, since the nested substitution recognises the quotes
> whereas the subscripting doesn't, you get,
>
> % print "${${path}[1]}"
> /home/user2/pws/bin /home/user2/pws/links /home/user2/pws/mh/bin
> /home/user2/pws/scripts /usr/local/bin /usr/sue/bin /usr/bin /usr/bin/X11
> /usr/ucb /usr/local/bin/X11 /cern/pro/bin /usr/local/cap /etc .
>
> (wrapped a bit --- well, you don't get that, but I do) which is distinctly
> on the strange side. I would suggest that in quotes the old behaviour
> character-subscripting behaviour is the right one.
With the patch below we get:
% echo ${$(uname -n)[1]}
beta
% echo "${$(uname -n)[1]}"
b
% echo ${${path}[1]}
/users/wischnow/bin/alpha
% echo "${${path}[1]}"
/
...which seems sensible to me.
Bye
Sven
--- os/subst.c Mon Mar 8 09:51:27 1999
+++ Src/subst.c Tue Mar 9 09:16:13 1999
@@ -976,7 +976,8 @@
skipparens(*s, *s == Inpar ? Outpar : Outbrace, &s);
sav = *s;
*s = 0;
- if (multsub(&val, (aspar ? NULL : &aval), &isarr, NULL) && quoted) {
+ if (multsub(&val, ((quoted || aspar) ? NULL : &aval), &isarr, NULL) &&
+ quoted) {
isarr = -1;
aval = alloc(sizeof(char *));
aspar = 0;
--
Sven Wischnowsky wischnow@informatik.hu-berlin.de
next reply other threads:[~1999-03-09 8:20 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
1999-03-09 8:19 Sven Wischnowsky [this message]
-- strict thread matches above, loose matches on Subject: below --
1999-03-09 10:30 Sven Wischnowsky
1999-03-09 10:12 Sven Wischnowsky
1999-03-08 8:50 Sven Wischnowsky
1999-03-08 9:01 ` Bart Schaefer
1999-03-08 15:55 ` Peter Stephenson
1999-03-09 8:16 ` Andrej Borsenkow
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