bug#10873: 24.0.93; `report-emacs-bug' obscures bug-reporting buffer (!)

[Drew Adams <drew.adams@oracle.com>]

> > emacs -Q
> >
> > M-x customize-option RET abbrev-file-name RET
> >
> > Put point after the c:/ in the default value c:/.abbrev_defs, and
> > hit C-k.
> >
> > M-x widget-complete RET
> >
> > (See bug #6830 - the completion candidates are the files in the
> > current dir, not the files in c:/.)
> >
> > You now have two windows in the only frame: (1) Customize, (2)
> > *Completions*.
> >
> > Still with point in the edit field of the Customize buffer:
> >
> > M-x report-emacs-bug RET fffffffffff RET
> >
> > In the only existing frame, you now have two windows: (1) *Bug
> > Help*, (2) *Completions*, with the first of these selected.
> >
> > The only important buffer to show at this point is completely
> > hidden: *unsent mail to bug-gnu-emacs@gnu.org*.  No way for a
> > user to report the bug, unless s?he knows both (a) that there
> > is a buffer somewhere, waiting for user input to report the bug
> > and (b) how to show that buffer.
> 
> Is this still a problem in Emacs 24.3?  The code in this area has
> gotten a lot of churn...

Yes, apparently so (in a build from 2014-02-07, at least).

I just followed the fine recipe and saw exactly what was reported.
Perhaps it is platform-specific, if that is not what you see.