bug#57673: [PATCH] Parse --help messages for pcomplete

[Augusto Stoffel]

Hi Stefan,

I've attached a new iteration of the patch.  I think the git completion
should be pretty usable (but certainly can be refined in the future).
I'm also satisfied with the parser, please have a look if you are
interested.

Next I'd like to think now of a good way to add batches of simpler
commands, say all GNU coreutils.  This would entail repeating variations
of

   (defun pcomplete/gpg ()
     "Completion for the GNU Privacy Guard."
     (while (if (pcomplete-match "\\`-" 0)
                (pcomplete-here (pcomplete-from-help "gpg --help"
                                                     :narrow-end "^ -se"))
              (pcomplete-here (pcomplete-entries)))))

over and over, so I was wondering if it makes sense to add a macro to
help here.  See a suggestion at the end of pcomplete.el.

0001-pcomplete-Generate-completions-from-help-messages.patch
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