GNU bug report logs - #24109
24.5; Long lines in message mode make Emacs irresponsive

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From: "Dirk-Jan C. Binnema" <djcb <at> djcbsoftware.nl>
To: John Mastro <john.b.mastro <at> gmail.com>
Cc: martin rudalics <rudalics <at> gmx.at>, Eli Zaretskii <eliz <at> gnu.org>, Christophe.Troestler <at> umons.ac.be, 24109 <at> debbugs.gnu.org
Subject: bug#24109: 24.5; Long lines in message mode make Emacs irresponsive
Date: Sat, 30 Jul 2016 22:22:30 +0300

On Saturday Jul 30 2016, John Mastro wrote:

> Eli Zaretskii <eliz <at> gnu.org> wrote:
>> Btw, line 1452 in fns.c is not in assq_no_quit, not in any Emacs 24.x
>> version (the bug is reported for 24.5).  In 25.1, line 1452 is indeed
>> inside assq_no_quit, so perhaps the version and/or line numbers are
>> reported incorrectly.
>
> The apparent discrepancy is because the reporter is using 24.5 and
> reported the bug against that version, but the author/maintainer of mu4e
> reproduced the bug in 25.1 and posted the backtrace.

Indeed.

I just tried to reproduce the issue with a freshly compiled emacs from
the emacs-25 branch, to get an 'xbacktrace'. But alas, I cannot
reproduce the issue right now, nor with a slightly older emacs :-/

The special case here was a ~700 character subject-header for some spam
message. The "corruption" in the message is a bit of a misnomer, I think
-- it was just emacs scrolling all the way to the right, thus scrolling
the other messages out of view. Haven't seen that with happening with
emacs-25.

I installed emacs-24.5 as well, and cannot reproduce it there
either. So, hopefully reporter is able to reproduce it and get an
xbacktrace.

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