GNU bug report logs - #799
23.0.60; Point stuck in overlay with before-string containing newline and image

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Message #5 received at submit <at> emacsbugs.donarmstrong.com (full text, mbox):

From: Ralf Angeli <angeli <at> caeruleus.net>
To: emacs-pretest-bug <at> gnu.org
Subject: 23.0.60; Point stuck in overlay with before-string containing newline and image
Date: Wed, 27 Aug 2008 22:22:53 +0200

Hi,

if you start Emacs with `emacs -Q', execute the code included below
and type `C-n' several times, point will not move past the next to
last line.  This breaks cursor movement with preview-latex in some
cases.

Note that this is an updated test case.  A similar bug was fixed two or
three days ago.


(progn
  (pop-to-buffer "*foo*")
  (insert "xxx\nxxx\nxxx")
  (let ((ov (make-overlay 5 12)))
    (overlay-put ov 'before-string
		 (concat
		  (propertize
		   "A" 'display `(image :type xpm
					:file ,(concat data-directory
						       "images/attach.xpm")))
		  "\n")))
  (goto-char (point-min)))


In GNU Emacs 23.0.60.1 (x86_64-unknown-linux-gnu, GTK+ Version 2.12.11)
 of 2008-08-26 on photon
Windowing system distributor `The X.Org Foundation', version 11.0.10402000
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: en_US.UTF-8
  value of $XMODIFIERS: nil
  locale-coding-system: utf-8-unix
  default-enable-multibyte-characters: t

Major mode: Fundamental

Minor modes in effect:
  tooltip-mode: t
  mouse-wheel-mode: t
  menu-bar-mode: t
  file-name-shadow-mode: t
  global-font-lock-mode: t
  blink-cursor-mode: t
  global-auto-composition-mode: t
  auto-encryption-mode: t
  auto-compression-mode: t
  line-number-mode: t
  transient-mark-mode: t

Recent input:
C-y C-x C-e C-n C-n M-x r e p o r t - e m <tab> <r
eturn>

Recent messages:
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1

Message #10 received at 799-done <at> emacsbugs.donarmstrong.com (full text, mbox):

From: Chong Yidong <cyd <at> stupidchicken.com>
To: Ralf Angeli <angeli <at> caeruleus.net>
Cc: 799-done <at> debbugs.gnu.org
Subject: Re: 23.0.60; Point stuck in overlay with before-string containing newline and image
Date: Wed, 27 Aug 2008 19:16:39 -0400

Thanks for the new testcase.  My previous fix to vertical-motion was
indeed too limited; I've checked in a more general fix.  Hopefully
preview-latex will work this time!

Message #11 received at 799-done <at> emacsbugs.donarmstrong.com (full text, mbox):

From: Ralf Angeli <angeli <at> caeruleus.net>
To: Chong Yidong <cyd <at> stupidchicken.com>
Cc: 799-done <at> debbugs.gnu.org
Subject: Re: 23.0.60; Point stuck in overlay with before-string containing newline and image
Date: Mon, 01 Sep 2008 21:23:35 +0200

* Chong Yidong (2008-08-28) writes:

> Thanks for the new testcase.  My previous fix to vertical-motion was
> indeed too limited; I've checked in a more general fix.

Thanks.

> Hopefully
> preview-latex will work this time!

Um, yes, sort of.  Now Emacs beeps each time one traverses an opened
preview.  (At least the frame flashes which usually indicates a beep
with visual system beeps enabled in Gnome.)  I can reproduce the
behavior with the test case for the bug at hand when moving point
downwards with `C-n'.

-- 
Ralf

Message #12 received at 799-done <at> emacsbugs.donarmstrong.com (full text, mbox):

From: Chong Yidong <cyd <at> stupidchicken.com>
To: Ralf Angeli <angeli <at> caeruleus.net>
Cc: 799-done <at> debbugs.gnu.org
Subject: Re: 23.0.60; Point stuck in overlay with before-string containing newline and image
Date: Mon, 01 Sep 2008 16:17:15 -0400

Ralf Angeli <angeli <at> caeruleus.net> writes:

>> Hopefully
>> preview-latex will work this time!
>
> Um, yes, sort of.  Now Emacs beeps each time one traverses an opened
> preview.  (At least the frame flashes which usually indicates a beep
> with visual system beeps enabled in Gnome.)  I can reproduce the
> behavior with the test case for the bug at hand when moving point
> downwards with `C-n'.

That's very strange.  I can't reproduce this.  Is this with `emacs -Q'?

Message #13 received at 799-done <at> emacsbugs.donarmstrong.com (full text, mbox):

From: Ralf Angeli <angeli <at> caeruleus.net>
To: Chong Yidong <cyd <at> stupidchicken.com>
Cc: 799-done <at> debbugs.gnu.org
Subject: Re: 23.0.60; Point stuck in overlay with before-string containing newline and image
Date: Mon, 01 Sep 2008 22:27:43 +0200

* Chong Yidong (2008-09-01) writes:

> Ralf Angeli <angeli <at> caeruleus.net> writes:
>
>>> Hopefully
>>> preview-latex will work this time!
>>
>> Um, yes, sort of.  Now Emacs beeps each time one traverses an opened
>> preview.  (At least the frame flashes which usually indicates a beep
>> with visual system beeps enabled in Gnome.)  I can reproduce the
>> behavior with the test case for the bug at hand when moving point
>> downwards with `C-n'.
>
> That's very strange.  I can't reproduce this.  Is this with `emacs -Q'?

Yes.

In GNU Emacs 23.0.60.1 (x86_64-unknown-linux-gnu, GTK+ Version 2.12.11)
 of 2008-08-31 on photon
Windowing system distributor `The X.Org Foundation', version 11.0.10402000

-- 
Ralf

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