GNU bug report logs - #2343
Color highlighting leaves a trail of cursors on the screen

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From: help-debbugs <at> gnu.org (Emacs bug Tracking System)
To: Chong Yidong <cyd <at> stupidchicken.com>
Subject: bug#2343: marked as done (Color highlighting leaves a trail of 
 cursors on the screen)
Date: Thu, 19 Feb 2009 14:05:06 +0000

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Your message dated Thu, 19 Feb 2009 08:59:57 -0500
with message-id <871vtu1q8y.fsf <at> cyd.mit.edu>
and subject line Re: bug#2343: Color highlighting leaves a trail of cursors on the screen
has caused the Emacs bug report #2343,
regarding Color highlighting leaves a trail of cursors on the screen
to be marked as done.

This means that you claim that the problem has been dealt with.
If this is not the case it is now your responsibility to reopen the
bug report if necessary, and/or fix the problem forthwith.

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-- 
2343: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=2343
Emacs Bug Tracking System
Contact help-debbugs <at> gnu.org with problems

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From: Kim Rose Carlsen <KRC <at> fullrate.dk>
To: "'bug-gnu-emacs <at> gnu.org'" <bug-gnu-emacs <at> gnu.org>
Subject: Color highlighting leaves a trail of cursors on the screen
Date: Mon, 16 Feb 2009 13:28:37 +0100

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Hi

When using emacs in -nw mode, the cursor seems to hang quite often leaving back a cursor block. 
The block is redrawn correctly if the window is resized or refreshed. I have attached a few low-res screenshots of the behaviour.

How to reproduce:
In a terminal 
1) start emacs (emacs -nw)
2) switch to scratch buffer 
2) Change to c mode (M-x c-mode)
3) type 'if (aa == 1)'

You should now see (a green) cursor block between 'aa' and '==' like the screenshot.

Tested on:
Freebsd, Debian, Gentoo, Ubuntu

Tested with terminal:
Gnome-terminal (term=xterm || term=linux)
xfce-terminal  (term=xterm || term=linux)
rox-terminal   (term=xterm || term=linux)

Cannot reproduce with 
linux console (term=linux || term=xterm)
xterm (term=xterm || term=linux)

There are many places where this bug could be, and im not too sure if its the terminal, the major mode or emacs that causes it.


Best Regards
Kim Carlsen

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From: Chong Yidong <cyd <at> stupidchicken.com>
To: Sven Joachim <svenjoac <at> gmx.de>
Cc: 2343-done <at> debbugs.gnu.org, emacs-devel <at> gnu.org,
        Kim Rose Carlsen <KRC <at> fullrate.dk>
Subject: Re: bug#2343: Color highlighting leaves a trail of cursors on the screen
Date: Thu, 19 Feb 2009 08:59:57 -0500

Sven Joachim <svenjoac <at> gmx.de> writes:

>> I'm pretty baffled by this one.  I can reproduce it using
>> gnome-terminal, and a slightly different version of the bug seems to
>> show up in Emacs 22 too.  Anyone have any idea?
>
> Probably that's http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=457483
> aka http://bugzilla.gnome.org/show_bug.cgi?id=514632.

Thanks.  Looks like the Gnome-terminal maintainer has fixed this in SVN.

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