GNU bug report logs - #3219
Long Line Sluggishness

Previous Next

Package: emacs;

Reported by: David Reitter <david.reitter <at> gmail.com>

Date: Tue, 5 May 2009 12:50:03 UTC

Severity: normal

Merged with 4123, 9589, 13675, 15555, 18530, 22143, 24523, 30457, 32523, 40007

Found in versions 23.1, 24.2, 24.2.93, 24.3, 24.5, 26.0.91, 27.0.50, 28.0.50

Fixed in version 29.1

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

Bug is archived. No further changes may be made.

Full log

Message #27 received at control <at> debbugs.gnu.org (full text, mbox):

From: Eli Zaretskii <eliz <at> gnu.org>
To: Andreas Nilsson <an <at> bahnhof.se>
Cc: 24523 <at> debbugs.gnu.org
Subject: Re: bug#24523: Base64 images makes Emacs slow
Date: Sat, 24 Sep 2016 14:32:44 +0300

merge 24523 13675
thanks

> Date: Sat, 24 Sep 2016 11:09:01 +0200
> From: Andreas Nilsson <an <at> bahnhof.se>
> Cc: 24523 <at> debbugs.gnu.org
> 
> 1. emacs -Q
> 2. Visit https://www.base64-image.de/ and "click here" select an image
> (I selected a ~200kB one)
> 3. Click "show code" and copy paste the string you get into *scratch*.
> 4. Now try C-v and M-v as well as type some characters, this is the
> point where it lags.

This creates a single physical line whose length is 280K characters.
It is a known limitation of the Emacs display engine that it's very
slow with such long lines.  See bug #13675.
This bug report was last modified 2 years and 299 days ago.

Previous Next

GNU bug tracking system
Copyright (C) 1999 Darren O. Benham, 1997,2003 nCipher Corporation Ltd, 1994-97 Ian Jackson.