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bug#46557: 28.0.50; Visual glitches in text mode when tab-bar visibility
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From: |
Juri Linkov |
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Subject: |
bug#46557: 28.0.50; Visual glitches in text mode when tab-bar visibility is altered at load time |
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Date: |
Sun, 09 May 2021 20:37:56 +0300 |
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User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/28.0.50 (x86_64-pc-linux-gnu) |
> 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)