GNU bug report logs - #48377
27.1; pixel-scroll-mode is unusable with popular modelines

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

From: Rudi C <rudiwillalwaysloveyou <at> gmail.com>
To: bug-gnu-emacs <at> gnu.org
Subject: 27.1; pixel-scroll-mode is unusable with popular modelines
Date: Wed, 12 May 2021 16:07:35 +0430

pixel-scroll-mode has severe performance issues with some popular
modelines, as documented on:

- https://github.com/seagle0128/doom-modeline/issues/199

- https://github.com/syl20bnr/spacemacs/issues/11549

- https://www.reddit.com/r/emacs/comments/8rml8f/emacs_26_pixelscrollmode_gcs_like_theres_no/

Is this unsolvable? pixel-scroll-mode is critical when one works with
inline images, such as an org-mode workflow where notes are taken using
screenshots. I have tried some alternative non-pixel-scrolling
workarounds, but they aren't in the end usable enough for me.

I am open to experimenting with forks such as
https://github.com/emacs-ng/emacs-ng if they do have this feature.


In GNU Emacs 27.1 (build 1, x86_64-apple-darwin20.3.0, NS
appkit-2022.30 Version 11.2.1 (Build 20D75))
 of 2021-03-13 built on Fereidoons-MacBook-Pro.local
System Description:  macOS 11.2.1

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Message #8 received at 48377 <at> debbugs.gnu.org (full text, mbox):

From: Eli Zaretskii <eliz <at> gnu.org>
To: Rudi C <rudiwillalwaysloveyou <at> gmail.com>
Cc: 48377 <at> debbugs.gnu.org
Subject: Re: bug#48377: 27.1;
 pixel-scroll-mode is unusable with popular modelines
Date: Wed, 12 May 2021 16:09:12 +0300

> From: Rudi C <rudiwillalwaysloveyou <at> gmail.com>
> Date: Wed, 12 May 2021 16:07:35 +0430
> 
> pixel-scroll-mode has severe performance issues with some popular
> modelines, as documented on:
> 
> - https://github.com/seagle0128/doom-modeline/issues/199
> 
> - https://github.com/syl20bnr/spacemacs/issues/11549
> 
> - https://www.reddit.com/r/emacs/comments/8rml8f/emacs_26_pixelscrollmode_gcs_like_theres_no/

Can you tell why you think pixel-scroll-mode is the culprit, and not
those enhanced mode-lines?  Why not ask the developers of those
mode-lines to take a look and find out why they make pixel-scroll-mode
so slow, as opposed to the default mode-line?

In any case, the profiles shown in these reports doesn't seem to point
to any problems with core facilities related to mode-line, so I'm
uncertain how to proceed with investigating this.  Would it be
possible for you or someone else to come up with a recipe starting
from "emacs -Q" and loading as few 3rd-party packages as possible,
ideally none at all?

Message #11 received at 48377 <at> debbugs.gnu.org (full text, mbox):

From: Lars Ingebrigtsen <larsi <at> gnus.org>
To: Rudi C <rudiwillalwaysloveyou <at> gmail.com>
Cc: 48377 <at> debbugs.gnu.org
Subject: Re: bug#48377: 27.1; pixel-scroll-mode is unusable with popular
 modelines
Date: Mon, 11 Jul 2022 16:37:38 +0200

Rudi C <rudiwillalwaysloveyou <at> gmail.com> writes:

> pixel-scroll-mode has severe performance issues with some popular
> modelines, as documented on:
>
> - https://github.com/seagle0128/doom-modeline/issues/199

(I'm going through old bug reports that unfortunately weren't resolved
at the time.)

According to that URL, this is still a problem in the current Emacs
(possibly), but as Eli says, if we're to make any progress here,
somebody will have to come up with a minimal test case that reproduces
the problem.

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

Message #14 received at 48377 <at> debbugs.gnu.org (full text, mbox):

From: Po Lu <luangruo <at> yahoo.com>
To: Lars Ingebrigtsen <larsi <at> gnus.org>
Cc: Rudi C <rudiwillalwaysloveyou <at> gmail.com>, 48377 <at> debbugs.gnu.org
Subject: Re: bug#48377: 27.1; pixel-scroll-mode is unusable with popular
 modelines
Date: Tue, 12 Jul 2022 10:05:52 +0800

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

> According to that URL, this is still a problem in the current Emacs
> (possibly), but as Eli says, if we're to make any progress here,
> somebody will have to come up with a minimal test case that reproduces
> the problem.

Rudi, does `pixel-scroll-precision-mode' also have this problem?

Most people whose hardware permits them to use that say it is vastly
superior to the original `pixel-scroll-mode', both in terms of behavior
and performance.

Message #17 received at 48377 <at> debbugs.gnu.org (full text, mbox):

From: Rudi C <rudiwillalwaysloveyou <at> gmail.com>
To: Po Lu <luangruo <at> yahoo.com>
Cc: Lars Ingebrigtsen <larsi <at> gnus.org>, 48377 <at> debbugs.gnu.org
Subject: Re: bug#48377: 27.1;
 pixel-scroll-mode is unusable with popular modelines
Date: Tue, 16 Aug 2022 20:18:17 +0430

[Message part 1 (text/plain, inline)]

Does `pixel-scroll-precision-mode` also work on macOS? If so, I'll install
emacs 29 and report back the results.

On Tue, Jul 12, 2022 at 6:36 AM Po Lu <luangruo <at> yahoo.com> wrote:

> Lars Ingebrigtsen <larsi <at> gnus.org> writes:
>
> > According to that URL, this is still a problem in the current Emacs
> > (possibly), but as Eli says, if we're to make any progress here,
> > somebody will have to come up with a minimal test case that reproduces
> > the problem.
>
> Rudi, does `pixel-scroll-precision-mode' also have this problem?
>
> Most people whose hardware permits them to use that say it is vastly
> superior to the original `pixel-scroll-mode', both in terms of behavior
> and performance.
>

[Message part 2 (text/html, inline)]

Message #20 received at 48377 <at> debbugs.gnu.org (full text, mbox):

From: Rudi C <rudiwillalwaysloveyou <at> gmail.com>
To: Po Lu <luangruo <at> yahoo.com>
Cc: Lars Ingebrigtsen <larsi <at> gnus.org>, 48377 <at> debbugs.gnu.org
Subject: Re: bug#48377: 27.1;
 pixel-scroll-mode is unusable with popular modelines
Date: Wed, 17 Aug 2022 01:58:25 +0430

[Message part 1 (text/plain, inline)]

`pixel-scroll-precision-mode` seems to work well. I guess we can close this
issue.

On Tue, Aug 16, 2022 at 8:18 PM Rudi C <rudiwillalwaysloveyou <at> gmail.com>
wrote:

> Does `pixel-scroll-precision-mode` also work on macOS? If so, I'll install
> emacs 29 and report back the results.
>
> On Tue, Jul 12, 2022 at 6:36 AM Po Lu <luangruo <at> yahoo.com> wrote:
>
>> Lars Ingebrigtsen <larsi <at> gnus.org> writes:
>>
>> > According to that URL, this is still a problem in the current Emacs
>> > (possibly), but as Eli says, if we're to make any progress here,
>> > somebody will have to come up with a minimal test case that reproduces
>> > the problem.
>>
>> Rudi, does `pixel-scroll-precision-mode' also have this problem?
>>
>> Most people whose hardware permits them to use that say it is vastly
>> superior to the original `pixel-scroll-mode', both in terms of behavior
>> and performance.
>>
>

[Message part 2 (text/html, inline)]

Message #23 received at 48377 <at> debbugs.gnu.org (full text, mbox):

From: Po Lu <luangruo <at> yahoo.com>
To: Rudi C <rudiwillalwaysloveyou <at> gmail.com>
Cc: Lars Ingebrigtsen <larsi <at> gnus.org>, 48377 <at> debbugs.gnu.org
Subject: Re: bug#48377: 27.1; pixel-scroll-mode is unusable with popular
 modelines
Date: Wed, 17 Aug 2022 10:05:43 +0800

Rudi C <rudiwillalwaysloveyou <at> gmail.com> writes:

> Does `pixel-scroll-precision-mode` also work on macOS? If so, I'll
> install emacs 29 and report back the results.

Yes, it does.  It works on every platform currently supported by Emacs
as long as your hardware supports it.

Message #28 received at 48377-done <at> debbugs.gnu.org (full text, mbox):

From: Po Lu <luangruo <at> yahoo.com>
To: Rudi C <rudiwillalwaysloveyou <at> gmail.com>
Cc: Lars Ingebrigtsen <larsi <at> gnus.org>, 48377-done <at> debbugs.gnu.org
Subject: Re: bug#48377: 27.1; pixel-scroll-mode is unusable with popular
 modelines
Date: Wed, 17 Aug 2022 10:07:12 +0800

Rudi C <rudiwillalwaysloveyou <at> gmail.com> writes:

> `pixel-scroll-precision-mode` seems to work well. I guess we can close this issue.

Thanks, closing.  pixel-scroll-precision-mode also has some knobs that
let it work with a regular mouse.  They don't work very well yet, but
once I clean them up we can probably obsolete (or at least rename) the
old pixel-scroll-mode to avoid confusion.

Message #31 received at 48377 <at> debbugs.gnu.org (full text, mbox):

From: Stefan Kangas <stefankangas <at> gmail.com>
To: Po Lu <luangruo <at> yahoo.com>, Rudi C <rudiwillalwaysloveyou <at> gmail.com>
Cc: Lars Ingebrigtsen <larsi <at> gnus.org>, 48377 <at> debbugs.gnu.org
Subject: Re: bug#48377: 27.1;
 pixel-scroll-mode is unusable with popular modelines
Date: Wed, 17 Aug 2022 03:37:32 -0700

Po Lu via "Bug reports for GNU Emacs, the Swiss army knife of text
editors" <bug-gnu-emacs <at> gnu.org> writes:

>> `pixel-scroll-precision-mode` seems to work well. I guess we can
>> close this issue.
>
> Thanks, closing.  pixel-scroll-precision-mode also has some knobs that
> let it work with a regular mouse.  They don't work very well yet, but
> once I clean them up we can probably obsolete (or at least rename) the
> old pixel-scroll-mode to avoid confusion.

Is there any reason why `pixel-scroll-precision-mode' doesn't just
replace `pixel-scroll-mode'?

Message #34 received at 48377 <at> debbugs.gnu.org (full text, mbox):

From: Eli Zaretskii <eliz <at> gnu.org>
To: Stefan Kangas <stefankangas <at> gmail.com>
Cc: luangruo <at> yahoo.com, rudiwillalwaysloveyou <at> gmail.com, larsi <at> gnus.org,
 48377 <at> debbugs.gnu.org
Subject: Re: bug#48377: 27.1;
 pixel-scroll-mode is unusable with popular modelines
Date: Wed, 17 Aug 2022 15:08:39 +0300

> Cc: Lars Ingebrigtsen <larsi <at> gnus.org>, 48377 <at> debbugs.gnu.org
> From: Stefan Kangas <stefankangas <at> gmail.com>
> Date: Wed, 17 Aug 2022 03:37:32 -0700
> 
> Po Lu via "Bug reports for GNU Emacs, the Swiss army knife of text
> editors" <bug-gnu-emacs <at> gnu.org> writes:
> 
> >> `pixel-scroll-precision-mode` seems to work well. I guess we can
> >> close this issue.
> >
> > Thanks, closing.  pixel-scroll-precision-mode also has some knobs that
> > let it work with a regular mouse.  They don't work very well yet, but
> > once I clean them up we can probably obsolete (or at least rename) the
> > old pixel-scroll-mode to avoid confusion.
> 
> Is there any reason why `pixel-scroll-precision-mode' doesn't just
> replace `pixel-scroll-mode'?

Yes, I'm that reason.

Message #37 received at 48377 <at> debbugs.gnu.org (full text, mbox):

From: Po Lu <luangruo <at> yahoo.com>
To: Stefan Kangas <stefankangas <at> gmail.com>
Cc: Rudi C <rudiwillalwaysloveyou <at> gmail.com>,
 Lars Ingebrigtsen <larsi <at> gnus.org>, 48377 <at> debbugs.gnu.org
Subject: Re: bug#48377: 27.1; pixel-scroll-mode is unusable with popular
 modelines
Date: Wed, 17 Aug 2022 20:23:58 +0800

Stefan Kangas <stefankangas <at> gmail.com> writes:

>> Thanks, closing.  pixel-scroll-precision-mode also has some knobs that
>> let it work with a regular mouse.  They don't work very well yet, but
>> once I clean them up we can probably obsolete (or at least rename) the
>> old pixel-scroll-mode to avoid confusion.
>
> Is there any reason why `pixel-scroll-precision-mode' doesn't just
> replace `pixel-scroll-mode'?

I thought I explained why: it doesn't work with a mouse out-of-the-box.

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