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Re: EXIT traps in interactive shells

From: Chet Ramey
Subject: Re: EXIT traps in interactive shells
Date: Sun, 05 Aug 2012 16:44:11 -0400
User-agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.6; rv:13.0) Gecko/20120614 Thunderbird/13.0.1

On 7/29/12 12:55 PM, Chet Ramey wrote:
> On 7/28/12 12:38 PM, Maarten Billemont wrote:
>> Trapping on EXIT is a really convenient way of cleaning up after yourself 
>> when your script ends.
> I agree that the EXIT trap should work on {} asynchronous subshells, and I
> will make sure that the next version of bash does this.
> However, the two examples you gave don't really differ in that respect.  If
> you take out the `kill', neither interactive nor non-interactive shells run
> the exit trap.  The difference is how interactive and non-interactive
> shells handle SIGTERM.  That's the place I'll have to look.

It's a problem with interactive shells wanting to reinitialize handling of
terminating signals in subshells.  It will be fixed in the next release.


``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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