From: Vincent Lefevre <vincent@vinc17.net>
To: zsh-users@zsh.org
Subject: Option PRINT_EXIT_VALUE doesn't always work as expected
Date: Fri, 30 Jul 2010 15:02:04 +0200 [thread overview]
Message-ID: <20100730130204.GC8757@ypig.lip.ens-lyon.fr> (raw)
Note: every test has been done under Debian/unstable (zsh 4.3.10).
I wonder why PRINT_EXIT_VALUE doesn't always work as expected:
ypig% setopt PRINT_EXIT_VALUE
ypig% false | head -n 1
zsh: exit 1 false |
zsh: done head -n 1
ypig% echo $pipestatus
1 0
ypig% false | true
ypig% echo $pipestatus
1 0
Also, if tst is a script that does "exit 141", I get as expected:
ypig% ./tst | head -n 1
zsh: exit 141 ./tst |
zsh: done head -n 1
ypig% echo $pipestatus
141 0
but if tst does "kill -PIPE $$", I get:
ypig% ./tst | head -n 1
ypig% echo $pipestatus
141 0
Actually, under some conditions, zsh knows that a process has been
killed with a signal:
ypig% svn log | cat | head -n 1
------------------------------------------------------------------------
svn: Write error: Broken pipe
zsh: exit 1 svn log |
zsh: broken pipe cat |
zsh: done head -n 1
How to make this always work?
Is this due to some bug in zsh?
--
Vincent Lefèvre <vincent@vinc17.net> - Web: <http://www.vinc17.net/>
100% accessible validated (X)HTML - Blog: <http://www.vinc17.net/blog/>
Work: CR INRIA - computer arithmetic / Arénaire project (LIP, ENS-Lyon)
next reply other threads:[~2010-07-30 13:08 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-07-30 13:02 Vincent Lefevre [this message]
2010-07-31 21:53 ` Peter Stephenson
2010-08-19 14:25 ` Vincent Lefevre
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