GNU bug report logs - #4094
23.1.50; posn-at-point gets upset by overlays with 'invisible and 'display

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From: help-debbugs <at> gnu.org (GNU bug Tracking System)
To: Lennart Borgman <lennart.borgman <at> gmail.com>
Subject: bug#4096: closed (Re: bug#4094: 23.1.50; posn-at-point gets upset
 by overlays with 'invisible and 'display)
Date: Sun, 10 Jul 2011 00:31:02 +0000

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Your bug report

#4094: 23.1.50; forward-char sometimes steps over overlay 'display

which was filed against the emacs package, has been closed.

The explanation is attached below, along with your original report.
If you require more details, please reply to 4096 <at> debbugs.gnu.org.

-- 
4094: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=4094
GNU Bug Tracking System
Contact help-debbugs <at> gnu.org with problems

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From: Glenn Morris <rgm <at> gnu.org>
To: 4094-done <at> debbugs.gnu.org
Subject: Re: bug#4094: 23.1.50;
	posn-at-point gets upset by overlays with 'invisible and 'display
Date: Sat, 09 Jul 2011 20:30:08 -0400

Closed due to lack of response.

Chong Yidong wrote:

> Please provide a precise, step-by-step recipe to reproduce this,
> starting with `emacs -Q'.

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From: Lennart Borgman <lennart.borgman <at> gmail.com>
To: emacs-pretest-bug <at> gnu.org
Subject: 23.1.50; forward-char sometimes steps over overlay 'display
Date: Sun, 9 Aug 2009 18:08:39 +0200

I have two rather similar 'display strings for two invisible
overlays. In one case forward-char steps over the 'display string part
and in the other it stops on it (as it should).

For the case when it steps over the display string looks something like

#("+ <p>...(6 hidden lines)" 0 1
  (face mode-line)
  2 3
  (fontified t)
  3 4
  (face font-lock-function-name-face fontified t)
  4 5
  (fontified t))

and for the case where it stops (expected behaviour) it looks like

#("+...(155 hidden lines)" 0 1
  (face mode-line))

I can reproduce it, but have not made a test case. However the behaviour
can easily be seen in the devel sources for nXhtml. One case is for
outline-minor-mode and one is for hs-minor-mode used in a nxhtml-mode buffer.


In GNU Emacs 23.1.50.1 (i386-mingw-nt5.1.2600)
 of 2009-08-01
Windowing system distributor `Microsoft Corp.', version 5.1.2600
configured using `configure --with-gcc (3.4) --no-opt --cflags
-Ic:/g/include -fno-crossjumping'

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