GNU bug report logs - #46299
28.0.50; Value of tab-bar-show not respected in new frames.

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From: Bastian Beranek <bastian.beischer <at> gmail.com>
To: Juri Linkov <juri <at> linkov.net>
Cc: 46299 <at> debbugs.gnu.org
Subject: bug#46299: 28.0.50; Value of tab-bar-show not respected in new frames.
Date: Mon, 15 Feb 2021 11:05:41 +0100

Juri Linkov <juri <at> linkov.net> writes:

>>> But how would that cause visual glitches, such as the tab bar
>>> splitting into two lines, menu bar not showing and general visual
>>> issues (lines jumping around etc.). This worries me a bit, because I
>>> don't understand the problem (just worked around it by not running the
>>> (tab-bar-mode -1) (tab-bar-mode 1) sequence. Did you try the recipe I
>>> reported above?
>>
>> Yes, I see the same.  A simpler test case is:
>>
>>   (tab-bar-mode -1)
>>   (tab-bar-mode 1)
>>   (tab-bar-mode -1)
>
> More low-level test case:
>
>   (set-frame-parameter nil 'tab-bar-lines 0)
>   (set-frame-parameter nil 'tab-bar-lines 1)
>   (set-frame-parameter nil 'tab-bar-lines 0)
>
> that breaks the menu bar.  I don't know if this is a bug in display code,
> or it's required to use 'redisplay' in-between.

Interesting. Should this be reported as a separate bug?

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