GNU bug report logs - #17120
Fwd: Error displaying a frame modified with (tool-bar-lines . 0)

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From: Juanma Barranquero <lekktu <at> gmail.com>
To: 17120 <at> debbugs.gnu.org
Cc: robert <at> capuchin.co.uk
Subject: bug#17120: Fwd: Error displaying a frame modified with (tool-bar-lines . 0)
Date: Thu, 27 Mar 2014 16:28:04 +0100

Package: emacs
Severity: minor
X-Debbugs-CC: robert <at> capuchin.co.uk


This is the underlying bug with GTK and Emacs that caused bug#17046.

It's minor because it's unlikely that modifying frames' heights with
tool-bar-lines = 0 be a common operation.


  emacs -Q -l bug.el

with bug.el:

;;; bug.el
(let* ((default-frame-alist nil)
       (frame (make-frame '((width . 80) (height . 20))))
       (lines (frame-parameter frame 'tool-bar-lines)))
  (discard-input)
  (read-event nil nil 2)
  (modify-frame-parameters frame '((tool-bar-lines . 0)
                                   (width . 60) (height . 25)))
  (modify-frame-parameters frame `((tool-bar-lines . ,lines))))
;;, end

causes the frame to be redisplayed incorrectly (the trigger being the
(tool-bar-lines . 0) parameter:

http://debbugs.gnu.org/cgi/bugreport.cgi?msg=26;filename=emacs-sshot.png;att=1;bug=17046

This happens on a Ubuntu 13.10:

GNU Emacs 24.3.50.2 (i686-pc-linux-gnu, GTK+ Version 3.8.6)
 of 2014-03-14 on poulenc
Repository revision: 116756 rudalics <at> gmx.at-20140314103846-ytcz7b30ocmzo8jh
Windowing system distributor `The X.Org Foundation', version 11.0.11405000
System Description: Ubuntu 13.10

Important settings:
  value of $LANG: en_GB.UTF-8
  locale-coding-system: utf-8-unix

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