bug#65089: 30.0.50; shell-command filename completion unexpected behavior change

[Mauro Aranda]

Stefan Monnier <monnier@iro.umontreal.ca> writes:

>>> Now, with emacs -Q:
>>> M-!
>>> ls ~/bug/bar
>>> Put point between "/" and "b" of "bar" and type TAB
>>> emacs says "No match", but I expected it to offer completions, 
foo-1 and
>>> foo-2.
>>>
>>> That was the behavior, at least in Emacs 28. Reverting the following
>>> commit, returns this behavior for me:
>
> The patch below adds yet another heuristic to try and handle the
> current case, but really we should rework the pcomplete API so as to
> provide us the right info to start with.

I see.  Thanks for your explanation.  In the meantime, I confirm that
your patch fixes this use case.