bug#44743: native-comp: confirm-exit-emacs warns about active processes when compiling

[Andrea Corallo via "Bug reports for GNU Emacs, the Swiss army knife of text editors" <bug-gnu-emacs@gnu.org>]

Eli Zaretskii <eliz@gnu.org> writes:

Q>> From: Andrea Corallo <akrl@sdf.org>
>> Cc: Stefan Kangas <stefan@marxist.se>, Eli Zaretskii <eliz@gnu.org>,
>>         Lars
>>  Ingebrigtsen <larsi@gnus.org>, 44743@debbugs.gnu.org
>> Date: Thu, 25 Feb 2021 22:51:00 +0000
>> 
>> IIUC this bug is "just" about deciding what's the best default behavior
>> regarding requiring confirmation or not for killing running async
>> compile processes when exiting Emacs.
>
> Yes, mostly.
>
>> As my understanding is that Eli's preference is matching the current
>> implementation (requiring it) I'm wondering if we can close this bug.
>
> It is fine with me to close the bug and leave this for later, when the
> branch is merged, and we have more user experience.  We could reopen
> the bug at that time.
>
> A better solution, from my POV, given the controversy, is to provide a
> defcustom for this, and then I'm okay with making silently killing the
> compilation the default.  I thought it would leave everyone happy.
> For some reason, Lars and Stefan are against even that, so I hesitate
> to even ask you, Andrea, to add such a defcustom if you have time.

I also agree the customize look like the best option, 54df918ad1 adds
`comp-async-query-on-exit' setting it to nil as default.

Please have a look to the docstring I've added and let me know in case
needs improvent, my docstring skills are worst than my coding one's.

Closing the bug in the meanwhile.

Thanks

  Andrea