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bug#24109: 24.5; Long lines in message mode make Emacs irresponsive


From: Eli Zaretskii
Subject: bug#24109: 24.5; Long lines in message mode make Emacs irresponsive
Date: Sun, 02 Oct 2016 10:09:53 +0300

> From: Yuri D'Elia <wavexx@thregr.org>
> Cc: 24109@debbugs.gnu.org, djcb@djcbsoftware.nl, 
> Christophe.Troestler@umons.ac.be
> Date: Sat, 01 Oct 2016 20:25:57 +0200
> 
> Ok, after some testing, I was able to get a self-contained test case.
> I was successfully able to test this into the current git's master with
> emacs -q, built with lucid as the main toolkit.
> 
> Please load-file the attached sample. It will create a *test* buffer,
> using a quoted representation of (buffer-substring) which is sufficient
> to recreate the problem.
> 
> It will move the point to the beginning of the last line, as well as
> switching on truncate-lines. Having the point on the beginning of the
> line is important.
> 
> Switch to the *test* buffer and move up. It will hang at the "Luciaine"
> line. I'm also attaching a screenshot of my current window state.
> 
> If you toggle auto-hscroll-mode instead, before scrolling, you'll see
> how the cursor disappears instead when exactly at the beginning of the
> line.

Thanks, I will look into this soon.





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