Emacs hangs if (display_width = line_width + 499) ...

Emacs hangs if (display_width = line_width + 499) ...

[Ulf Klaperski]

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In GNU Emacs 21.2.1 (i386-debian-linux-gnu, X toolkit, Xaw3d scroll bars)
 of 2002-03-22 on raven, modified by Debian
configured using `configure  i386-debian-linux-gnu --prefix=/usr --sharedstatedir=/var/lib --libexecdir=/usr/lib --localstatedir=/var/lib --infodir=/usr/share/info --mandir=/usr/share/man --with-pop=yes --with-x=yes --with-x-toolkit=athena --without-gif'
Important settings:
  value of $LC_ALL: nil
  value of $LC_COLLATE: nil
  value of $LC_CTYPE: nil
  value of $LC_MESSAGES: nil
  value of $LC_MONETARY: nil
  value of $LC_NUMERIC: nil
  value of $LC_TIME: nil
  value of $LANG: C
  locale-coding-system: nil
  default-enable-multibyte-characters: t

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

Hi,

ok, I give up trying to find the bug myself. |-( 

I have a situation that makes emacs hang. I have attached a testcase file
(it's _really_ small!).

If you save the attached file 549.txt and start emacs with:

emacs -geometry 50x20 549.txt

Then press cursor-down twice... emacs hangs... just on leaving the long line.

Sometimes it recovers after a while. The problem seems that the actual
line is 499 chars longer than the visible. I noticed that emacs loops in
xdisp.c:redisplay_internal. Probably it's related to
"MAX_NEWLINE_DISTANCE = 500" in forward_to_next_line_start.

Hm, I think a really important setting is: truncate-lines: t

I saw the problem on Debian, SuSE and HP-sUX with emacs 21.2.

Thanks,
Ulf


-- 
http://www.againsttcpa.com

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aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa


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Re: Emacs hangs if (display_width = line_width + 499) ...

[Alexander Pohoyda]

Ulf Klaperski <Ro_Kenn@gmx.de> writes:

> If you save the attached file 549.txt and start emacs with:
> 
> emacs -geometry 50x20 549.txt
> 
> Then press cursor-down twice... emacs hangs... just on leaving the long line.

Cannot reproduce. Emacs 21.3.50 does not hang.


-- 
Alexander Pohoyda
<alexander.pohoyda@gmx.net>

Re: Emacs hangs if (display_width = line_width + 499) ...

[Juanma Barranquero]

On 18 Jan 2003 21:04:12 +0100, Alexander Pohoyda <alexander.pohoyda@gmx.net> wrote:

> Cannot reproduce. Emacs 21.3.50 does not hang.

The 21.2.93 pretest doesn't hang either. The last version that did show
the problem was 21.2.90, AFAICS, so it's presumibly fixed in the
incoming 21.3.

                                                           /L/e/k/t/u