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Re: bug-report: debug trap messes up pipestatus if containing command su


From: Hengyang Zhao
Subject: Re: bug-report: debug trap messes up pipestatus if containing command substitution
Date: Thu, 23 May 2019 14:11:26 -0700

Awesome! Could you please cc the fix to this thread once it's done? Thank
you!

Hengyang

On Wed, May 22, 2019, 7:27 AM Chet Ramey <address@hidden> wrote:

> On 5/21/19 12:51 AM, Hengyang Zhao wrote:
> > Dear bash developers,
> >
> > I found an unexpected behavior when engineering some code in a callback
> of
> > DEBUG trap. The code has been distilled to expose this behavior:
> >
> > ### BEGIN
> > my_func() {
> >   local x=$(:)
> > }
> > trap my_func DEBUG
> > false | true | false | true | false
> > echo address@hidden
> > # expects 1 0 1 0 1
> > # gets 0 0 0 0 1
> > ### END
>
> Thanks for the report. This appears to be a Linux-only problem (at least I
> can't reproduce it on Mac OS X). I'll fix it for the next devel push.
>
> Chet
>
> --
> ``The lyf so short, the craft so long to lerne.'' - Chaucer
>                  ``Ars longa, vita brevis'' - Hippocrates
> Chet Ramey, UTech, CWRU    address@hidden    http://tiswww.cwru.edu/~chet/
>


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