From: Christophe Martin <schplurtz@free.fr>
To: Bart Schaefer <schaefer@brasslantern.com>,
Clint Adams <schizo@debian.org>,
310872@bugs.debian.org
Cc: zsh-workers@sunsite.dk
Subject: Re: Bug#310872: zsh can't be a ksh replacement (can't trap ERR).
Date: Fri, 27 May 2005 14:50:29 +0200 [thread overview]
Message-ID: <42971795.8090005@free.fr> (raw)
In-Reply-To: <1050527012028.ZM21361@candle.brasslantern.com>
Hi,
Bart Schaefer a écrit :
>
> Zsh does not provide an ERR trap because some platforms on which zsh can be
> compiled actually have SIGERR defined, which is a real OS-level signal and
> not interchangeable with the ksh et al. use of ERR as a magic trap.
>
> The zsh equivalent is
>
> trap 'echo alert-an-error-occured' ZERR
Don't you think it's strange to trap a Zsomething in Ksh ??
>
> A possible workaround would be
>
> (( $signals[(I)ERR] )) || alias -g ERR=ZERR
>
Waow ! That's knowing zsh !
But, If i keep zsh as ksh
I have to rewrite every script to put this workaround in.
On the other hand, if I ever run the modified script with the more
traditionnal ksh, the workaround fails.
So, for this particular problem of trap ERR, there are only problems
in using zsh as a ksh, at least on platform where ksh ERR does not
conflict with OS SIGERR. (By the way, what are the platform with OS
SIGERR ? And do some ksh run on them ?)
Regards,
Christophe
--
char*p="c+)1+)I1+++(Y1)I1)1)I1)19Y(QII1)1)I1)19Q(K)K+)I1+9I(a)I1)II1))AA(91)I\
1)II1)199(3+)1)K+)19;(";main(_){while(*p){for(_=*p-32>>3;_;--_)putchar(' ');
if (!(_=*p++-32&7))putchar('\n');else while(_--)printf("_/");}}
next prev parent reply other threads:[~2005-05-27 14:12 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <200505261638.SAA09610@sdt.univ-brest.fr>
2005-05-26 19:15 ` Clint Adams
2005-05-27 1:20 ` Bart Schaefer
2005-05-27 12:50 ` Christophe Martin [this message]
2005-05-27 14:19 ` Bart Schaefer
2005-05-27 16:34 ` Christophe Martin
2005-05-27 12:50 ` Christophe Martin
2005-05-30 14:06 ` Clint Adams
2005-05-30 18:41 ` Bart Schaefer
2005-06-01 8:25 ` Oliver Kiddle
2005-06-01 10:31 ` Peter Stephenson
2005-06-01 13:50 ` Bart Schaefer
2005-06-01 13:57 ` Bart Schaefer
2005-06-01 14:04 ` Peter Stephenson
2005-06-01 14:09 ` Bart Schaefer
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