GNU bug report logs - #14795
height parameter inconsistent in new vs existing frames when tool-bar is enabled

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Package: emacs;

Reported by: Juanma Barranquero <lekktu <at> gmail.com>

Date: Thu, 4 Jul 2013 22:54:02 UTC

Severity: wishlist

Merged with 25

Done: martin rudalics <rudalics <at> gmx.at>

Bug is archived. No further changes may be made.

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From: Juanma Barranquero <lekktu <at> gmail.com>
To: 14795 <at> debbugs.gnu.org
Subject: bug#14795: height parameter inconsistent in new vs existing frames when tool-bar is enabled
Date: Fri, 5 Jul 2013 00:52:22 +0200

Package: emacs


This happens since at least 22.1, and I think has been discussed
before on emacs-devel, but I've been unable to find the reference.

  emacs -Q

 (let ((params '((height . 25))))
  (make-frame params)  ;; f1
  (modify-frame-parameters (make-frame) params))  ;; f2

  f1 = 28 lines
  f2 = 25 lines

Adding (tool-bar-lines . 0) to params, both frames are 25 lines.

Obviously, when creating the frame Emacs is allowing three additional
lines as space for the toolbar. tool-bar-mode defaults to 3 in a newly
created frame, at least once it has been displayed:

(let ((f (make-frame)))
  (cons (frame-parameter f 'tool-bar-lines)
        (progn
          (sit-for 0)
          (frame-parameter f 'tool-bar-lines))))

=> (1 . 3)

Does that happen in all platforms? If so, shouldn't we make the
meaning of the height frame parameter consistent in all its uses?
This bug report was last modified 10 years and 141 days ago.

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