GNU bug report logs - #7831
23.2; raise display property broken on Mac OS X

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Packages: emacs, ns;

Reported by: Christopher Genovese <genovese <at> cmu.edu>

Date: Wed, 12 Jan 2011 17:09:02 UTC

Severity: important

Tags: patch

Merged with 8651, 8913

Found in version 23.2

Done: Chong Yidong <cyd <at> stupidchicken.com>

Bug is archived. No further changes may be made.

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bug#7831; Package emacs. (Wed, 12 Jan 2011 17:09:03 GMT) Full text and rfc822 format available.
Acknowledgement sent to Christopher Genovese <genovese <at> cmu.edu>:
New bug report received and forwarded. Copy sent to bug-gnu-emacs <at> gnu.org. (Wed, 12 Jan 2011 17:09:03 GMT) Full text and rfc822 format available.

Message #5 received at submit <at> debbugs.gnu.org (full text, mbox):

From: Christopher Genovese <genovese <at> cmu.edu>
To: bug-gnu-emacs <at> gnu.org
Subject: 23.2; raise display property broken on Mac OS X
Date: Wed, 12 Jan 2011 11:30:36 -0500

[Message part 1 (text/plain, inline)]
The raise display property appears to be broken in Emacs 23.2.1
running on Mac OS X 10.5.8 (using --with-ns). I first noticed this in
AucTeX when the subscripts did not drop as they did with say Carbon
Emacs 22. But I can reproduce the behavior using Emacs -Q even in
fundamental mode.

When one character, say, is given the raise property, e.g., (raise -0.3),
the entire line shifts (and spaces out somewhat), and the cursor becomes
taller when over that character.  But the character itself does not
drop.

This is easily seen in an AucTeX buffer (either plain-TeX-mode or
LaTeX-mode): type $A_f$, and the f is shrunken as it should but the line
goes down so that the A and f have the same top.

But for a simple test in Fundamental mode, type "hello, world!" and
position the cursor on the second ell. Then do

  (text-properties-at (point))      ; returns nil
  (add-text-properties (point) (1+ (point)) '(display (raise -0.3)))  ;
returns t, line shifts down, cursor grows tall
  (text-properties-at (point))      ; returns (display (raise -0.3))
  (forward-char)
  (text-properties-at (point))      ; returns nil
  (backward-char 2)
  (text-properties-at (point))      ; returns nil

If instead one does (raise 0.3), the behavior is *exactly the same*,
the line shifts down and the cursor grows tall.

Using Carbon Emacs 22 as a comparison, the same steps there
produce a single dropped (or raised with positive value) ell
in an otherwise unaffected line. This is the proper behavior.

The information from report-emacs-bug (under Emacs -Q)
is appended below.

   Thanks,

     Chris


In GNU Emacs 23.2.1 (i386-apple-darwin9.8.0, NS apple-appkit-949.54)
 of 2010-11-09 on christopher-genoveses-macbook-pro.local
Windowing system distributor `Apple', version 10.3.949
configured using `configure  '--with-ns''

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: Any (esp. AucTeX and fundamental-mode)

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
  font-lock-mode: t
  auto-encryption-mode: t
  auto-compression-mode: t
  line-number-mode: t
  transient-mark-mode: t

Recent input:
C-h c C-w s-x <escape> x r e p o r t - e m a c s -
b u g <return>

Recent messages:
For information about GNU Emacs and the GNU system, type C-h C-a.
C-w runs the command kill-region
kill-region: The mark is not set now, so there is no region

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emacs)

[Message part 2 (text/html, inline)]
Merged 7831 8913. Request was from Glenn Morris <rgm <at> gnu.org> to control <at> debbugs.gnu.org. (Fri, 24 Jun 2011 01:10:03 GMT) Full text and rfc822 format available.
Forcibly Merged 7831 8651 8913. Request was from Stefan Monnier <monnier <at> iro.umontreal.ca> to control <at> debbugs.gnu.org. (Sat, 25 Jun 2011 13:04:02 GMT) Full text and rfc822 format available.
Added tag(s) patch. Request was from Stefan Monnier <monnier <at> iro.umontreal.ca> to control <at> debbugs.gnu.org. (Mon, 04 Jul 2011 18:39:02 GMT) Full text and rfc822 format available.
Severity set to 'important' from 'normal' Request was from Stefan Monnier <monnier <at> iro.umontreal.ca> to control <at> debbugs.gnu.org. (Sat, 09 Jul 2011 02:53:01 GMT) Full text and rfc822 format available.
bug closed, send any further explanations to 8913 <at> debbugs.gnu.org and David Aspinall <David.Aspinall <at> ed.ac.uk> Request was from Chong Yidong <cyd <at> stupidchicken.com> to control <at> debbugs.gnu.org. (Thu, 28 Jul 2011 18:51:02 GMT) Full text and rfc822 format available.
bug archived. Request was from Debbugs Internal Request <help-debbugs <at> gnu.org> to internal_control <at> debbugs.gnu.org. (Fri, 26 Aug 2011 11:24:03 GMT) Full text and rfc822 format available.
This bug report was last modified 13 years and 352 days ago.

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