GNU bug report logs - #46557
28.0.50; Visual glitches in text mode when tab-bar visibility is altered at load time

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Package: emacs;

Reported by: Bastian Beranek <bastian.beischer <at> gmail.com>

Date: Tue, 16 Feb 2021 11:07:02 UTC

Severity: normal

Found in version 28.0.50

Done: Lars Ingebrigtsen <larsi <at> gnus.org>

Bug is archived. No further changes may be made.

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From: Juri Linkov <juri <at> linkov.net>
To: Bastian Beranek <bastian.beischer <at> gmail.com>
Cc: 46557 <at> debbugs.gnu.org
Subject: bug#46557: 28.0.50; Visual glitches in text mode when tab-bar visibility is altered at load time
Date: Sun, 09 May 2021 20:37:56 +0300

> The following recipe creates a broken visual appearance of emacs in text
> mode, at least on GNU/Linux:
>
> 1) Create a test.el file with these lines:
>
> (set-frame-parameter nil 'tab-bar-lines 0)
> (set-frame-parameter nil 'tab-bar-lines 1)
> (set-frame-parameter nil 'tab-bar-lines 0)

This bug report can't be closed, because it seems
this problem is related to https://debbugs.gnu.org/46827#153
where setting tab-bar-lines to 1 changes tab-bar-lines to 2.
Reproducible test case:

(progn
  (set-frame-parameter nil 'tab-bar-lines 1)
  (let ((lines (frame-parameter nil 'tab-bar-lines)))
    (sit-for 0)
    (list lines (frame-parameter nil 'tab-bar-lines))))

returns (1 2)
This bug report was last modified 3 years and 34 days ago.

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