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From: Clark Wang <dearvoid@gmail.com>
Newsgroups: gnu.bash.bug
Subject: Re: misleading error message from variable modifier
Date: Fri, 2 Mar 2018 14:07:30 +0800
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On Fri, Mar 2, 2018 at 12:37 PM, don fong <dfong@dfong.com> wrote:

> Chet, thanks.  in subst.c there is code that looks similar to what i had
> suggested.  but i don't see the tests that i submitted.  i also don't see
> the change listed in CHANGES?
>

It's in the file CWRU/CWRU.chlog:

                                   2/24
                                   ----
subst.c
        - parameter_brace_expand_error: add parameter saying whether or not
          we are checking whether value is null, so we can have different
          error messages for ${x:?} and ${x?}. Report and fix from
          don fong <dfong@dfong.com>