GNU bug report logs - #25654
24.5; linum and hide-show

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

From: Abdul-Lateef Haji-Ali <hajiali <at> maths.ox.ac.uk>
To: bug-gnu-emacs <at> gnu.org
Subject: 24.5; linum and hide-show
Date: Wed, 8 Feb 2017 17:36:31 +0000

When working on huge files, it seems that when hide-show collapses a
large multi-line block, linum still creates hidden overlays for every
line in the hidden block leading to unresponsive emacs. To reproduce:
Create a new file, enable c-mode, hs-minor-mode and
linum-mode, create a huge block by typing: { C-u 10000 RET } then
execute hs-hide-all and watch Emacs become unresponsive.




In GNU Emacs 24.5.1 (x86_64-pc-linux-gnu, GTK+ Version 3.18.9)
 of 2016-04-17 on lgw01-04, modified by Debian
Windowing system distributor `The X.Org Foundation', version 11.0.11804000
System Description:	Ubuntu 16.04.1 LTS

Configured using:
 `configure --build x86_64-linux-gnu --prefix=/usr
 --sharedstatedir=/var/lib --libexecdir=/usr/lib
 --localstatedir=/var/lib --infodir=/usr/share/info
 --mandir=/usr/share/man --with-pop=yes
 --enable-locallisppath=/etc/emacs24:/etc/emacs:/usr/local/share/emacs/24.5/site-lisp:/usr/local/share/emacs/site-lisp:/usr/share/emacs/24.5/site-lisp:/usr/share/emacs/site-lisp
 --build x86_64-linux-gnu --prefix=/usr --sharedstatedir=/var/lib
 --libexecdir=/usr/lib --localstatedir=/var/lib
 --infodir=/usr/share/info --mandir=/usr/share/man --with-pop=yes
 --enable-locallisppath=/etc/emacs24:/etc/emacs:/usr/local/share/emacs/24.5/site-lisp:/usr/local/share/emacs/site-lisp:/usr/share/emacs/24.5/site-lisp:/usr/share/emacs/site-lisp
 --with-x=yes --with-x-toolkit=gtk3 --with-toolkit-scroll-bars
 'CFLAGS=-g -O2 -fstack-protector-strong -Wformat
 -Werror=format-security -Wall' 'CPPFLAGS=-Wdate-time
 -D_FORTIFY_SOURCE=2' 'LDFLAGS=-Wl,-Bsymbolic-functions -Wl,-z,relro''

Important settings:
  value of $LANG: en_GB.UTF8
  locale-coding-system: utf-8

Major mode: Python

Minor modes in effect:
  subword-mode: t
  guru-mode: t
  auto-dim-other-buffers-mode: t
  highlight-indentation-mode: t
  elpy-mode: t
  pyvenv-mode: t
  global-auto-complete-mode: t
  auto-complete-mode: t
  global-linum-mode: t
  linum-mode: t
  better-registers: t
  show-paren-mode: t
  server-mode: t
  yas-minor-mode: t
  TeX-PDF-mode: t
  global-flycheck-mode: t
  flycheck-mode: t
  which-function-mode: t
  global-company-mode: t
  company-mode: t
  helm-mode: t
  helm-descbinds-mode: t
  async-bytecomp-package-mode: t
  flx-ido-mode: t
  ido-ubiquitous-mode: t
  editorconfig-mode: t
  global-diff-hl-mode: t
  diff-hl-mode: t
  diff-auto-refine-mode: t
  winner-mode: t
  global-undo-tree-mode: t
  undo-tree-mode: t
  whitespace-mode: t
  global-anzu-mode: t
  anzu-mode: t
  projectile-mode: t
  flyspell-mode: t
  volatile-highlights-mode: t
  global-hl-line-mode: t
  recentf-mode: t
  savehist-mode: t
  show-smartparens-global-mode: t
  show-smartparens-mode: t
  smartparens-global-mode: t
  smartparens-mode: t
  global-auto-revert-mode: t
  delete-selection-mode: t
  prelude-global-mode: t
  prelude-mode: t
  which-key-mode: t
  beacon-mode: t
  shell-dirtrack-mode: t
  tooltip-mode: t
  electric-indent-mode: t
  mouse-wheel-mode: t
  file-name-shadow-mode: t
  global-font-lock-mode: t
  font-lock-mode: t
  auto-composition-mode: t
  auto-encryption-mode: t
  auto-compression-mode: t
  size-indication-mode: t
  column-number-mode: t
  line-number-mode: t
  transient-mark-mode: t
  hs-minor-mode: t

Recent messages:
Quit
Mark set [3 times]
Saving file /home/hajiali/Work/Projects/nested_var/code/plot_compare.py...
Wrote
/tmp/.!home!hajiali!Work!Projects!nested_var!code!plot_compare.py.~undo-tree~
Wrote /home/hajiali/Work/Projects/nested_var/code/plot_compare.py
Mark set
Mark saved where search started
Saving file /home/hajiali/Work/Projects/nested_var/code/plot_compare.py...
Wrote
/tmp/.!home!hajiali!Work!Projects!nested_var!code!plot_compare.py.~undo-tree~
Wrote /home/hajiali/Work/Projects/nested_var/code/plot_compare.py

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Message #8 received at 25654 <at> debbugs.gnu.org (full text, mbox):

From: Eli Zaretskii <eliz <at> gnu.org>
To: Abdul-Lateef Haji-Ali <hajiali <at> maths.ox.ac.uk>
Cc: 25654 <at> debbugs.gnu.org
Subject: Re: bug#25654: 24.5; linum and hide-show
Date: Wed, 08 Feb 2017 20:33:39 +0200

> From: Abdul-Lateef Haji-Ali <hajiali <at> maths.ox.ac.uk>
> Date: Wed, 8 Feb 2017 17:36:31 +0000
> 
> When working on huge files, it seems that when hide-show collapses a
> large multi-line block, linum still creates hidden overlays for every
> line in the hidden block leading to unresponsive emacs.

Yes.

> To reproduce:
> Create a new file, enable c-mode, hs-minor-mode and
> linum-mode, create a huge block by typing: { C-u 10000 RET } then
> execute hs-hide-all and watch Emacs become unresponsive.

You may wish to try the alternative nlinum-mode, it performs better in
this scenario.

Message #11 received at 25654 <at> debbugs.gnu.org (full text, mbox):

From: Stefan Kangas <stefan <at> marxist.se>
To: Eli Zaretskii <eliz <at> gnu.org>
Cc: 25654 <at> debbugs.gnu.org, Abdul-Lateef Haji-Ali <hajiali <at> maths.ox.ac.uk>
Subject: Re: bug#25654: 24.5; linum and hide-show
Date: Tue, 11 Aug 2020 00:56:45 -0700

Eli Zaretskii <eliz <at> gnu.org> writes:

>> From: Abdul-Lateef Haji-Ali <hajiali <at> maths.ox.ac.uk>
>> Date: Wed, 8 Feb 2017 17:36:31 +0000
>>
>> When working on huge files, it seems that when hide-show collapses a
>> large multi-line block, linum still creates hidden overlays for every
>> line in the hidden block leading to unresponsive emacs.
>
> Yes.
>
>> To reproduce:
>> Create a new file, enable c-mode, hs-minor-mode and
>> linum-mode, create a huge block by typing: { C-u 10000 RET } then
>> execute hs-hide-all and watch Emacs become unresponsive.
>
> You may wish to try the alternative nlinum-mode, it performs better in
> this scenario.

So is there anything more to do here, or should we just accept these
limitations in linum-mode?

Best regards,
Stefan Kangas

Message #16 received at 25654-done <at> debbugs.gnu.org (full text, mbox):

From: Eli Zaretskii <eliz <at> gnu.org>
To: Stefan Kangas <stefan <at> marxist.se>
Cc: hajiali <at> maths.ox.ac.uk, 25654-done <at> debbugs.gnu.org
Subject: Re: bug#25654: 24.5; linum and hide-show
Date: Tue, 11 Aug 2020 17:45:59 +0300

> From: Stefan Kangas <stefan <at> marxist.se>
> Date: Tue, 11 Aug 2020 00:56:45 -0700
> Cc: Abdul-Lateef Haji-Ali <hajiali <at> maths.ox.ac.uk>, 25654 <at> debbugs.gnu.org
> 
> >> To reproduce:
> >> Create a new file, enable c-mode, hs-minor-mode and
> >> linum-mode, create a huge block by typing: { C-u 10000 RET } then
> >> execute hs-hide-all and watch Emacs become unresponsive.
> >
> > You may wish to try the alternative nlinum-mode, it performs better in
> > this scenario.
> 
> So is there anything more to do here, or should we just accept these
> limitations in linum-mode?

I think this bug report is OBE, since we now have
display-line-numbers-mode, which doesn't use overlays.  So I'm closing
the bug; thanks for pointing out it is obsolete.

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