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From: Eli Zaretskii <eliz@gnu.org>
Newsgroups: gmane.emacs.devel
Subject: Re: Documentation of tab-bar-show and friends
Date: Thu, 09 Sep 2021 22:04:14 +0300
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To: Juri Linkov <juri@linkov.net>
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> From: Juri Linkov <juri@linkov.net>
> Cc: emacs-devel@gnu.org
> Date: Thu, 09 Sep 2021 21:47:02 +0300
> 
> Generally, there are two levels of customization:
> 
> 1. The global tab-bar-show that defines when to show/hide the tab bar
> depending on the number of tabs.  This variable affects all frames.
> 
> 2. It's possible to override the aforementioned behavior
> by explicitly calling toggle-frame-tab-bar on a frame.
> Then the value of tab-bar-show has no effect on that frame.

Then I don't understand why NEWS says

  *** The tab bar is frame-local when 'tab-bar-show' is a number.
  You can show/hide the tab bar independently for each frame, according
  to the value of 'tab-bar-show'.

If you say that frame-local tab bar _overrides_ tab-bar-show, then how
come the value of tab-bar-show is described here as _causing_ the tab
bar to be frame-local?