GNU bug report logs - #3471
23.0.94; linum-mode and invisible lines

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From: help-debbugs <at> gnu.org (GNU bug Tracking System)
To: Nicolas Petton <nicolas <at> petton.fr>
Cc: tracker <at> debbugs.gnu.org
Subject: bug#3471: closed (23.0.94; linum-mode and invisible lines)
Date: Wed, 27 Jul 2016 22:35:02 +0000

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Your message dated Thu, 28 Jul 2016 00:34:26 +0200
with message-id <878twm3e31.fsf <at> petton.fr>
and subject line Re: bug#3471: 23.0.94; linum-mode and invisible lines
has caused the debbugs.gnu.org bug report #3471,
regarding 23.0.94; linum-mode and invisible lines
to be marked as done.

(If you believe you have received this mail in error, please contact
help-debbugs <at> gnu.org.)


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3471: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=3471
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From: Leo <sdl.web <at> gmail.com>
To: emacs-pretest-bug <at> gnu.org
Cc: Markus Triska <markus.triska <at> gmx.at>
Subject: 23.0.94; linum-mode and invisible lines
Date: Fri, 05 Jun 2009 03:35:23 +0100

Please describe exactly what actions triggered the bug
and the precise symptoms of the bug:

In buffers where many many lines are invisible, enabling linum-mode
would take a long time and C-g won't be able to stop it.

More specifically, I use magit to manage a small git repo, its status
buffer at the moment has 11850 lines (buffer size 366524) with only <
100 lines visible. Running linum-mode on it would freeze emacs for a few
minutes on a intel core duo 2.0G machine. It looks like linum has wasted
a lot of time on invisible lines. Is that necessary?

Although I'm aware that I can work around it by setting
line-number-display-limit but my feeling is linum is doing something
inefficiently.

GNU Emacs 23.0.94.1 (i386-apple-darwin9.7.0, NS apple-appkit-949.46) of
 2009-05-23 on 200.sub-75-216-116.myvzw.com

Thanks.

Leo

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From: Nicolas Petton <nicolas <at> petton.fr>
To: Leo <sdl.web <at> gmail.com>
Cc: 3471-done <at> debbugs.gnu.org, 3471 <at> debbugs.gnu.org
Subject: Re: bug#3471: 23.0.94; linum-mode and invisible lines
Date: Thu, 28 Jul 2016 00:34:26 +0200

Leo <sdl.web <at> gmail.com> writes:

Hi Leo,

> In buffers where many many lines are invisible, enabling linum-mode
> would take a long time and C-g won't be able to stop it.
>
> More specifically, I use magit to manage a small git repo, its status
> buffer at the moment has 11850 lines (buffer size 366524) with only <
> 100 lines visible. Running linum-mode on it would freeze emacs for a few
> minutes on a intel core duo 2.0G machine.

This bug report is pretty, and I cannot reproduce it on a recent build
of Emacs:

- open a magit status buffer with large uncommitted changes (234000
  lines)
- Evaluate `linum-mode'

The result is instantaneous with Emacs built from master today, on a 2nd
Gen Intel i5 (i5-2520M CPU @ 2.50GHz).

I'm closing this ticket, and while I can't reproduce the issue, feel
free to reopen this ticket if you can.

Cheers,
Nico

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