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Re: misleading error message from variable modifier


From: don fong
Subject: Re: misleading error message from variable modifier
Date: Thu, 1 Mar 2018 09:24:29 -0800

any feedback on this patch?

On Sat, Feb 24, 2018 at 11:24 AM, Chet Ramey <address@hidden> wrote:

> On 2/23/18 10:20 PM, don fong wrote:
> > hi folks.  i'm a bash user, who just noticed a slight anomaly.  it has
> > to with the shell variable modifier ${parameter?} .  according to the
> > man page, ${X?} should yield an error message and exit if X is unset,
> > otherwise the value of X.  in this case,
> >
> >     unset X; echo ${X?}
> >
> > i expect to get an error message, and indeed an error message results.
> >
> >     bash: X: parameter null or not set
> >
> > but i think the error message is misleading.
>
> Thanks for the report and patch. I'll take a look.
>
> 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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