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Re: trap problem on bash 4.2


From: Chet Ramey
Subject: Re: trap problem on bash 4.2
Date: Fri, 25 Mar 2011 14:14:05 -0400
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On 3/21/11 8:46 AM, sky wrote:

> Bash Version: 4.2
> Patch Level: 8
> Release Status: release
> 
> Description:
>         I am a programmer working in Japan.
>         I encountered an incompatibility between bash 4.2 and 4.1.

Thanks for the report.  I made some changes in this area between bash-4.1
and bash-4.2 in response to a Posix interpretation:

http://austingroupbugs.net/view.php?id=53

I think Posix is ambiguous about the disposition of signals that are
ignored when a new shell or subshell is started, or at least open to
differing interpretations -- ksh93 behaves as bash-4.2 does, for instance,
where dash and mksh behave like bash-4.1 -- but I think it's better not to
deliberately introduce an incompatibility.

I will revert to the bash-4.1 behavior for the next release.  This may
or may not come out as a patch to bash-4.2.

Chet
-- 
``The lyf so short, the craft so long to lerne.'' - Chaucer
                 ``Ars longa, vita brevis'' - Hippocrates
Chet Ramey, ITS, CWRU    address@hidden    http://cnswww.cns.cwru.edu/~chet/



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