GNU bug report logs - #31749
26.1; Improve eldoc message commands heuristic

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Message #5 received at submit <at> debbugs.gnu.org (full text, mbox):

From: Carlos Pita <carlosjosepita <at> gmail.com>
To: bug-gnu-emacs <at> gnu.org
Subject: 26.1; Improve eldoc message commands heuristic
Date: Thu, 07 Jun 2018 17:18:33 -0300

The current criterion essentially removes the echo area message after
any command not whitelisted in eldoc-message-commands.

This is problematic since the list of relevant commands is unknown in
advance for evert possible extension package. One could argue that
extension package maintainers are responsible then, but I have had many
problems with eldoc behaving suboptimally in conjunction with company
mode, elpy mode and others (which are all quality extensions) that I
wouldn't put the burden of this on the maintainers.

Now, I might be completely wrong, but why don't you just check if
(current-message) is nil or not? This way if any command has written to
the echo area eldoc won't override its message. You can still keep the
whitelist in order to force override by eldoc (although I don't see much
value in this). You have probably thought many times about this
alternative and rejected for reasons I'm unable to see, but it's worth
to intent ;)

---

In GNU Emacs 26.1 (build 1, x86_64-pc-linux-gnu, GTK+ Version 3.22.30)
 of 2018-05-29 built on juergen
Windowing system distributor 'The X.Org Foundation', version 11.0.11906000
System Description:	Manjaro Linux

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Message #8 received at 31749 <at> debbugs.gnu.org (full text, mbox):

From: Noam Postavsky <npostavs <at> gmail.com>
To: Carlos Pita <carlosjosepita <at> gmail.com>
Cc: 31749 <at> debbugs.gnu.org
Subject: Re: bug#31749: 26.1; Improve eldoc message commands heuristic
Date: Wed, 13 Jun 2018 20:10:25 -0400

severity 31749 wishlist
quit

Carlos Pita <carlosjosepita <at> gmail.com> writes:

> The current criterion essentially removes the echo area message after
> any command not whitelisted in eldoc-message-commands.
>
> This is problematic since the list of relevant commands is unknown in
> advance for evert possible extension package. One could argue that
> extension package maintainers are responsible then, but I have had many
> problems with eldoc behaving suboptimally in conjunction with company
> mode, elpy mode and others (which are all quality extensions) that I
> wouldn't put the burden of this on the maintainers.
>
> Now, I might be completely wrong, but why don't you just check if
> (current-message) is nil or not? This way if any command has written to
> the echo area eldoc won't override its message. You can still keep the
> whitelist in order to force override by eldoc (although I don't see much
> value in this). You have probably thought many times about this
> alternative and rejected for reasons I'm unable to see, but it's worth
> to intent ;)

Not sure if anybody's considered this, perhaps you can try it out and
see if there are any drawbacks?

Message #13 received at 31749 <at> debbugs.gnu.org (full text, mbox):

From: Lars Ingebrigtsen <larsi <at> gnus.org>
To: Carlos Pita <carlosjosepita <at> gmail.com>
Cc: 31749 <at> debbugs.gnu.org
Subject: Re: bug#31749: 26.1; Improve eldoc message commands heuristic
Date: Thu, 04 Feb 2021 10:29:15 +0100

Carlos Pita <carlosjosepita <at> gmail.com> writes:

> The current criterion essentially removes the echo area message after
> any command not whitelisted in eldoc-message-commands.

[...]

> Now, I might be completely wrong, but why don't you just check if
> (current-message) is nil or not? This way if any command has written to
> the echo area eldoc won't override its message. You can still keep the
> whitelist in order to force override by eldoc (although I don't see much
> value in this). You have probably thought many times about this
> alternative and rejected for reasons I'm unable to see, but it's worth
> to intent ;)

(I'm going through old bug reports that unfortunately got little response at
the time.)

The way Emacs is messaging things has been changed a bit in Emacs 28,
and fewer messages are overwritten in general, but I'm not sure whether
this also covers the eldoc messages being discussed here.

Do you have a concrete case where eldoc is overwriting a message that it
shouldn't?

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

Message #18 received at 31749 <at> debbugs.gnu.org (full text, mbox):

From: Lars Ingebrigtsen <larsi <at> gnus.org>
To: Carlos Pita <carlosjosepita <at> gmail.com>
Cc: 31749 <at> debbugs.gnu.org
Subject: Re: bug#31749: 26.1; Improve eldoc message commands heuristic
Date: Fri, 12 Mar 2021 02:53:30 +0100

Lars Ingebrigtsen <larsi <at> gnus.org> writes:

> The way Emacs is messaging things has been changed a bit in Emacs 28,
> and fewer messages are overwritten in general, but I'm not sure whether
> this also covers the eldoc messages being discussed here.
>
> Do you have a concrete case where eldoc is overwriting a message that it
> shouldn't?

More information was requested, but no response was given within a 
month, so I'm closing this bug report.  If the problem still exists,
please respond to this email and we'll reopen the bug report.

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

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