GNU bug report logs - #16870
24.3; "display" text property versus ":box" face attribute

Previous Next

To add a comment to this bug, you must first unarchive it, by sending
a message to control AT debbugs.gnu.org, with unarchive 16870 in the body.
You can then email your comments to 16870 AT debbugs.gnu.org in the normal way.

Toggle the display of automated, internal messages from the tracker.

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

From: Ben Liblit <liblit <at> acm.org>
To: bug-gnu-emacs <at> gnu.org
Subject: 24.3; "display" text property versus ":box" face attribute
Date: Mon, 24 Feb 2014 15:18:07 -0600

If a range of text carries the "display" text property and also has its 
"face" text property set to something with the ":box" attribute, then 
the right edge of the box is not actually drawn.  The following elisp 
code fragment demonstrates the problem:

    (let ((buffer (generate-new-buffer "*bug*")))
      (set-buffer buffer)
      (insert "lorem ipsum dolor\n\nlorem ipsum dolor\n")
      (put-text-property 7 12 'display "xxxxx")
      (put-text-property 7 12 'face '(:box t))
      (put-text-property 26 31 'face '(:box t))
      (switch-to-buffer-other-window buffer))

Observe that on the first line, the displayed "xxxxx" replacement text 
has only three box edges drawn: top, left, and bottom.  The right edge 
is missing.  By contrast, the second line of text has no "display" text 
property set and shows a proper box with all four edges.


In GNU Emacs 24.3.1 (x86_64-unknown-linux-gnu, GTK+ Version 2.18.9)
 of 2013-06-10 on mcgee.cs.wisc.edu
Windowing system distributor `Red Hat, Inc.', version 11.0.11300000
System Description:	Red Hat Enterprise Linux Server release 6.5 (Santiago)

Configured using:
 `configure '--prefix=/unsup/emacs-24.3/amd64_rhel6' '--without-pop'
 '--without-sound' '--with-gif=no''

Important settings:
  value of $LC_CTYPE: en_US.UTF-8
  value of $LANG: en_US.UTF-8
  value of $XMODIFIERS: @im=none
  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
  tool-bar-mode: t
  menu-bar-mode: t
  file-name-shadow-mode: t
  global-font-lock-mode: t
  blink-cursor-mode: t
  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 <help-echo> M-x r e p o r t - e m <tab>
<return>

Recent messages:
For information about GNU Emacs and the GNU system, type C-h C-a.
Mark set
#<buffer *bug*>

Load-path shadows:
None found.

Features:
(shadow sort gnus-util mail-extr emacsbug message format-spec rfc822 mml
easymenu mml-sec mm-decode mm-bodies mm-encode mail-parse rfc2231
mailabbrev gmm-utils mailheader sendmail rfc2047 rfc2045 ietf-drums
mm-util mail-prsvr mail-utils time-date tooltip ediff-hook vc-hooks
lisp-float-type mwheel x-win x-dnd tool-bar dnd fontset image regexp-opt
fringe tabulated-list newcomment lisp-mode register page menu-bar
rfn-eshadow timer select scroll-bar mouse jit-lock font-lock syntax
facemenu font-core frame cham georgian utf-8-lang misc-lang vietnamese
tibetan thai tai-viet lao korean japanese hebrew greek romanian slovak
czech european ethiopic indian cyrillic chinese case-table epa-hook
jka-cmpr-hook help simple abbrev minibuffer loaddefs button faces
cus-face macroexp files text-properties overlay sha1 md5 base64 format
env code-pages mule custom widget hashtable-print-readable backquote
make-network-process dbusbind dynamic-setting system-font-setting
font-render-setting move-toolbar gtk x-toolkit x multi-tty emacs)

Message #10 received at 16870-done <at> debbugs.gnu.org (full text, mbox):

From: Eli Zaretskii <eliz <at> gnu.org>
To: Ben Liblit <liblit <at> acm.org>
Cc: 16870-done <at> debbugs.gnu.org
Subject: Re: bug#16870: 24.3;
 "display" text property versus ":box" face attribute
Date: Thu, 27 Feb 2014 19:44:53 +0200

> Date: Mon, 24 Feb 2014 15:18:07 -0600
> From: Ben Liblit <liblit <at> acm.org>
> 
> If a range of text carries the "display" text property and also has its 
> "face" text property set to something with the ":box" attribute, then 
> the right edge of the box is not actually drawn.  The following elisp 
> code fragment demonstrates the problem:
> 
>      (let ((buffer (generate-new-buffer "*bug*")))
>        (set-buffer buffer)
>        (insert "lorem ipsum dolor\n\nlorem ipsum dolor\n")
>        (put-text-property 7 12 'display "xxxxx")
>        (put-text-property 7 12 'face '(:box t))
>        (put-text-property 26 31 'face '(:box t))
>        (switch-to-buffer-other-window buffer))
> 
> Observe that on the first line, the displayed "xxxxx" replacement text 
> has only three box edges drawn: top, left, and bottom.  The right edge 
> is missing.  By contrast, the second line of text has no "display" text 
> property set and shows a proper box with all four edges.

Thanks, I fixed this in trunk revision 116585.

For the record: this bug was there since Emacs 21.1, when the 'box'
face was first introduced.

Message #13 received at 16870 <at> debbugs.gnu.org (full text, mbox):

From: Ben Liblit <liblit <at> acm.org>
To: 16870 <at> debbugs.gnu.org
Subject: Re: bug#16870: closed (Re: bug#16870: 24.3; "display" text property
 versus ":box" face attribute)
Date: Thu, 27 Feb 2014 12:17:12 -0600

Excellent.  Thanks for the speedy fix!

Previous Next

GNU bug tracking system
Copyright (C) 1999 Darren O. Benham, 1997,2003 nCipher Corporation Ltd, 1994-97 Ian Jackson.