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Re: BASH_SUBSHELL reset to 0 on EXIT trap in aubshell


From: Chet Ramey
Subject: Re: BASH_SUBSHELL reset to 0 on EXIT trap in aubshell
Date: Sat, 15 Oct 2016 20:26:12 -0400
User-agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.11; rv:45.0) Gecko/20100101 Thunderbird/45.4.0

On 10/13/16 4:00 AM, Martijn Dekker wrote:
> bash resets BASH_SUBSHELL to 0 when executing an EXIT trap, even if the
> EXIT trap is executed in a subshell.
> 
> echo $(trap 'echo $BASH_SUBSHELL' EXIT; echo $BASH_SUBSHELL)
> Actual output: 1 0
> Expected output: 1 1

This is a reasonable suggestion for both command and process substitution.

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



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