bug#74616: 30.0.92; tmm always displays the *Completions* buffer

[Daniel Mendler]

Eli Zaretskii <eliz@gnu.org> writes:

>> From: Stefan Monnier <monnier@iro.umontreal.ca>
>> Cc: Daniel Mendler <mail@daniel-mendler.de>,  74616@debbugs.gnu.org
>> Date: Sat, 30 Nov 2024 13:55:02 -0500
>> 
>> > I think the automatic detection is a better default behavior, but
>> > maybe we could have a variable (not necessarily a defcustom) for users
>> > who would like to have the old behavior.
>> > Stefan, WDYT?
>> 
>> I often use the standard UI and I generally don't like this eagerness to
>> display *Completions*, so I'd either change the code not to auto-display
>> the buffer (what I have done locally) or at least offer a variable
>> for that.
>> 
>> So it seems like the var should have 3 settings: always show, never
>> show, and "guess" (tho maybe we can skip the "guess" option and let the
>> other completion UIs set the var to nil).
>
> Daniel, would you like to submit the patch with these changes?

So is the plan to add a completion metadata `eager-display' such that
completion tables can request immediate display? This completion
metadata can then be overridden by the user via
`completion-category-overrides'. The patch would include changes to tmm,
ffap-menu and imenu (obsoleting `imenu-eager-completion-buffer').

Daniel