Re: ERR trap, pipeline, and errtrace

[Chet Ramey]

On 1/8/21 3:07 AM, Boris Kolpackov wrote:
> Chet Ramey <chet.ramey@case.edu> writes:
>
> > Yes, it's expected.
>
> Thanks for confirming.
>
>
> > The language is fine; it describes the default behavior of the ERR trap. In
> > the trap command description, the "any command in a pipeline" refers to the
> > function call, and indeed, the trap does not get run even though the exit
> > from the trap handler causes the pipeline element to return a non-zero
> > status.
>
> I see what you are saying though that last bit is not quite true if
> pipefail is set. 

If pipefail is set, the trap doesn't run because that pipeline element 
returns a non-zero exit status; it runs because pipefail causes the entire
pipeline to return a non-zero exit status.


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