GNU bug report logs - #47974
27.2; doc-view-mode freezes when used together with global-linum-mode

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

From: "Raoul Comninos" <revrari <at> mweb.co.za>
To: bug-gnu-emacs <at> gnu.org
Subject: 27.2; doc-view-mode freezes when used together with global-linum-mode
Date: Fri, 23 Apr 2021 18:15:27 +0200

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

When trying to view documents using `doc-view-mode' Emacs
slows down and eventually freezes. I traced this problem to
`global-linum-mode' which was set to `t' in my init.el file. I tested
this with Emacs -Q and I am able to replicate it.
`global-linum-mode' does not work with `doc-view-mode'. Emacs
does not crash but freezes. One has then to quit Emacs through
the
Windows task manager.

In GNU Emacs 27.2 (build 1, x86_64-w64-mingw32)
 of 2021-03-26 built on fv-az68-192
Repository revision:
4e952a7445daa0fb9df229ea61b69ccee3264d4a
Repository branch: master
Windowing system distributor 'Microsoft Corp.', version
10.0.19041
System Description: Microsoft Windows 10 Pro
(v10.0.2004.19041.928)

Recent messages:
Loading savehist...done
Loading paren...done
Loading winner...done
Loading c:/rari/.emacs.d/recentf...done
Loading c:/rari/.emacs.d/.session...done
(org-roam) total: 381, files-modified: 0, ids: 0, links: 0, tags:
0, titles: 0, refs: 0, deleted: 0
Initializing Hyperbole...done
Hyperbole 7.1.4 is ready for action.
For information about GNU Emacs and the GNU system, type C-h
C-a.
Making completion list...

Configured using:
 'configure --prefix=/mingw64 --build=x86_64-w64-mingw32
--with-modules
 --without-dbus --without-compress-install
'CFLAGS=-march=x86-64
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CPPFLAGS=-D__USE_MINGW_ANSI_STDIO=1
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-Wl,--dynamicbase,--high-entropy-va,--nxcompat,--default-image-
base-high''

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Important settings:
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Major mode: Org

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  mouse-wheel-mode: t
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Load-path shadows:
None found.

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Memory information:
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 (vectors 16 44015)
 (vector-slots 8 488103 35304)
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[Message part 2 (text/html, inline)]

Message #8 received at 47974 <at> debbugs.gnu.org (full text, mbox):

From: Stefan Kangas <stefan <at> marxist.se>
To: Raoul Comninos <revrari <at> mweb.co.za>
Cc: 47974 <at> debbugs.gnu.org
Subject: Re: bug#47974: 27.2;
 doc-view-mode freezes when used together with global-linum-mode
Date: Sun, 25 Apr 2021 06:02:20 -0500

"Raoul Comninos" <revrari <at> mweb.co.za> writes:

> When trying to view documents using `doc-view-mode' Emacs slows down and eventually freezes. I traced this problem to
> `global-linum-mode' which was set to `t' in my init.el file. I tested this with Emacs -Q and I am able to replicate it. `global-linum-mode' does
> not work with `doc-view-mode'. Emacs does not crash but freezes. One has then to quit Emacs through the
> Windows task manager.
>
> In GNU Emacs 27.2 (build 1, x86_64-w64-mingw32)
>  of 2021-03-26 built on fv-az68-192
> Repository revision: 4e952a7445daa0fb9df229ea61b69ccee3264d4a
> Repository branch: master
> Windowing system distributor 'Microsoft Corp.', version 10.0.19041
> System Description: Microsoft Windows 10 Pro (v10.0.2004.19041.928)

I guess the recipe here is:

0. emacs -Q
1. M-x global-linum-mode RET
2. C-x C-f <foo.pdf>

I can confirm Emacs is very unresponsive, but there is no freeze here.
This is on GNU/Linux and current master.

(I'm not seeing any unresponsiveness with `display-line-numbers-mode',
so a workaround might be to just use that instead.)

Message #11 received at 47974 <at> debbugs.gnu.org (full text, mbox):

From: Gregory Heytings <gregory <at> heytings.org>
To: Stefan Kangas <stefan <at> marxist.se>
Cc: Raoul Comninos <revrari <at> mweb.co.za>, 47974 <at> debbugs.gnu.org
Subject: Re: bug#47974: 27.2; doc-view-mode freezes when used together with
 global-linum-mode
Date: Sun, 25 Apr 2021 11:45:41 +0000

>> When trying to view documents using `doc-view-mode' Emacs slows down 
>> and eventually freezes. I traced this problem to `global-linum-mode' 
>> which was set to `t' in my init.el file. I tested this with Emacs -Q 
>> and I am able to replicate it. `global-linum-mode' does not work with 
>> `doc-view-mode'. Emacs does not crash but freezes. One has then to quit 
>> Emacs through the Windows task manager.
>
> I guess the recipe here is:
>
> 0. emacs -Q
> 1. M-x global-linum-mode RET
> 2. C-x C-f <foo.pdf>
>
> I can confirm Emacs is very unresponsive, but there is no freeze here. 
> This is on GNU/Linux and current master.
>
> (I'm not seeing any unresponsiveness with `display-line-numbers-mode', 
> so a workaround might be to just use that instead.)
>

Why not just automatically turn these modes off in doc-view-mode with 
(setq-local global-linum-mode nil display-line-numbers-mode nil)?  Is 
there a good reason to see the "1" there?

Message #14 received at 47974 <at> debbugs.gnu.org (full text, mbox):

From: Stefan Kangas <stefan <at> marxist.se>
To: Gregory Heytings <gregory <at> heytings.org>
Cc: Raoul Comninos <revrari <at> mweb.co.za>, 47974 <at> debbugs.gnu.org
Subject: Re: bug#47974: 27.2;
 doc-view-mode freezes when used together with global-linum-mode
Date: Sun, 25 Apr 2021 08:54:48 -0500

Gregory Heytings <gregory <at> heytings.org> writes:

> Why not just automatically turn these modes off in doc-view-mode with
> (setq-local global-linum-mode nil display-line-numbers-mode nil)?  Is
> there a good reason to see the "1" there?

Sounds good to me.

Message #17 received at 47974 <at> debbugs.gnu.org (full text, mbox):

From: Lars Ingebrigtsen <larsi <at> gnus.org>
To: Stefan Kangas <stefan <at> marxist.se>
Cc: Gregory Heytings <gregory <at> heytings.org>,
 Raoul Comninos <revrari <at> mweb.co.za>, 47974 <at> debbugs.gnu.org
Subject: Re: bug#47974: 27.2; doc-view-mode freezes when used together with
 global-linum-mode
Date: Sun, 02 May 2021 11:29:12 +0200

Stefan Kangas <stefan <at> marxist.se> writes:

> Gregory Heytings <gregory <at> heytings.org> writes:
>
>> Why not just automatically turn these modes off in doc-view-mode with
>> (setq-local global-linum-mode nil display-line-numbers-mode nil)?  Is
>> there a good reason to see the "1" there?
>
> Sounds good to me.

Me, too, so I made that change in Emacs 28.

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

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