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Message-ID: <42E6F038.3030107@byu.net>
Date: Tue, 26 Jul 2005 20:23:52 -0600
From: Eric Blake <ebb9 AT byu DOT net>
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To: Krzysztof Duleba <krzysan AT skrzynka DOT pl>
CC: cygwin AT cygwin DOT com
Subject: Re: Problem with bash-3.0-9 (test)
References: <42E53027 DOT 8050409 AT acm DOT org> <42E5351D DOT 4030700 AT byu DOT net> <42E638E1 DOT 2040806 AT byu DOT net> <dc5jsn$fei$1 AT sea DOT gmane DOT org>
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According to Krzysztof Duleba on 7/26/2005 9:12 AM:
> Isn't this caused by the fact that bash returns $? when exits and Ctrl-C
> sets $? to 1? ksh, on the other hand, sets $? to 130 after Ctrl-C.

This is a bug in bash and ksh; POSIX requires $? to reflect the exit
status of the last executed pipeline, and does not allow the stty
interrupt character to change that when it is cancelling line editing.  I
have forwarded it to the upstream bash maintainer, but the ksh maintainer
may also want to report that bug.  zsh is correct in this regard.  What's
weird is that bash does have the correct information, in the $PIPESTATUS
array variable:

$ :
$ echo $? ${PIPESTATUS[*]}
0 0
$ :
$ [Ctrl-C]
$ echo $? ${PIPESTATUS[*]}
1 0
$ (exit 2)
$ echo $? ${PIPESTATUS[*]}
2 2
$ (exit 2)
$ [Ctrl-C]
$ echo $? ${PIPESTATUS[*]}
1 2

- --
Life is short - so eat dessert first!

Eric Blake             ebb9 AT byu DOT net
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