From: Vincent Lefevre <vincent@vinc17.net>
To: zsh-workers@zsh.org
Subject: prompt problem
Date: Fri, 20 Aug 2010 14:28:23 +0200 [thread overview]
Message-ID: <20100820122823.GA4702@ypig.lip.ens-lyon.fr> (raw)
After a "zsh -f", source the following:
precmd()
{
psvar[1]=$?
if [[ $psvar[1] -gt 128 ]] then
local sig=$signals[$(($psvar[1]-127))]
[[ -n $sig ]] && psvar[1]=$sig
fi
}
TRAPCLD() { [[ -o interactive && -n $TTY ]] && precmd }
PS1="%m:%20<...<%~%<<%(?..[%1v])%(#.#.>) "
then execute
{ sleep 3 } | { sleep 3 } | { sleep 3 } | { sleep 3 }
and interrupt it with Ctrl-C.
I can see two unexpected behaviors (not always reproducible, one
needs to try several times), as seen here:
ypig:~[INT]> { sleep 3 } | { sleep 3 } | { sleep 3 } | { sleep 3 }
^C%
ypig:~[INT]> { sleep 3 } | { sleep 3 } | { sleep 3 } | { sleep 3 }
^C%
ypig:~[INT]> { sleep 3 } | { sleep 3 } | { sleep 3 } | { sleep 3 }
^C%
ypig:~[INT]> { sleep 3 } | { sleep 3 } | { sleep 3 } | { sleep 3 }
^C%
ypig:~[INT]> ypig:~[INT]> { sleep 3 } | { sleep 3 } | { sleep 3 } | { sleep 3 }
^C%
ypig:~[INT]> { sleep 3 } | { sleep 3 } | { sleep 3 } | { sleep 3 }
^C%
ypig:~[0]> { sleep 3 } | { sleep 3 } | { sleep 3 } | { sleep 3 }
^C%
ypig:~[0]> { sleep 3 } | { sleep 3 } | { sleep 3 } | { sleep 3 }
^C%
So, sometimes the prompt is output twice. This seems to be a bug.
I sometimes get a "[0]" instead of "[INT]". This one may be due
to the fact that $? is 0 in the trap. I wonder whether this is
correct. At least the behavior doesn't seem to be consistent
with:
ypig:~> sleep 5 &
[1] 9217
ypig:~> blah
zsh: command not found: blah
ypig:~[127]>
ypig:~[127]>
[1] + done sleep 5
ypig:~[127]>
ypig:~[127]> echo $?
127
where the value of $? seems to be preserved after "sleep 5" has
terminated.
--
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:[~2010-08-20 12:36 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-08-20 12:28 Vincent Lefevre [this message]
2010-09-07 19:26 ` Vincent Lefevre
2010-09-08 8:19 ` Bart Schaefer
-- strict thread matches above, loose matches on Subject: below --
1996-12-17 12:51 Prompt problem Alexey Solovyov
1996-12-17 13:10 ` Goran Larsson
1996-12-17 13:24 ` gwing
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