bug#54961: 28.1; info-display-manual completions issues

[Lars Ingebrigtsen <larsi@gnus.org>]

Howard Melman <hmelman@gmail.com> writes:

> I'm happy to see info-display-manual added to Emacs 28.1

It was added to Emacs 24.1, apparently?

> but the completions offered leave something to be desired.

Yes, indeed.

> First, they include manuals named "./" and "../" which
> shouldn't be there.
>
> Second I seem to see duplicates, if I complete with input
> "emacs" I see candidates "emacs" and "emacs.info.gz" and
> similar duplicates for emacs-mime and emacs-gnutls, so 3
> candidates show as 6.  This may be an artifact of the
> macport build I'm using.  It happens from emacs -q and I
> can't easily test on vanilla gnu emacs.

It happens on Debian, too.  And it includes NEWS and README and other
non-manual things.

> Third it would be really nice if there were an
> affixation-function that added the one line description of
> the manual for a completions framework to show when
> completions-detailed is t.  Perhaps it could get the info
> from Info-dir-contents?

That would indeed be nice, but it would require opening and partially
parsing hundreds of info files, so it would be painfully slow, I think.

-- 
(domestic pets only, the antidote for overdose, milk.)
   bloggy blog: http://lars.ingebrigtsen.no