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

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

[Ralf Angeli]

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:
For information about GNU Emacs and the GNU system, type C-h C-a.
Mark set
1

bug#799: marked as done (23.0.60; Point stuck in overlay with before-string containing newline and image)

[Emacs bug Tracking System]

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Your message dated Wed, 27 Aug 2008 19:16:39 -0400
with message-id <87wsi2yroo.fsf@cyd.mit.edu>
and subject line Re: 23.0.60; Point stuck in overlay with before-string containing newline and image
has caused the Emacs bug report #799,
regarding 23.0.60; Point stuck in overlay with before-string containing newline and image
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.

(NB: If you are a system administrator and have no idea what this
message is talking about, this may indicate a serious mail system
misconfiguration somewhere. Please contact don@donarmstrong.com
immediately.)


-- 
799: http://emacsbugs.donarmstrong.com/cgi-bin/bugreport.cgi?bug=799
Emacs Bug Tracking System
Contact don@donarmstrong.com with problems

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From: Ralf Angeli <angeli@caeruleus.net>
To: emacs-pretest-bug@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
Message-ID: <87y72i1a3m.fsf@photon.caeruleus.net>

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:
For information about GNU Emacs and the GNU system, type C-h C-a.
Mark set
1



[-- Attachment #3: Type: message/rfc822, Size: 1155 bytes --]

From: Chong Yidong <cyd@stupidchicken.com>
To: Ralf Angeli <angeli@caeruleus.net>
Cc: 799-done@emacsbugs.donarmstrong.com
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
Message-ID: <87wsi2yroo.fsf@cyd.mit.edu>

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!