bug#71883: [PATCH] Fix tab-bar-auto-width with customized tab-bar-tab-face-function

[Eli Zaretskii]

> Cc: Adam Porter <adam@alphapapa.net>, 71883@debbugs.gnu.org,
>  Ship Mints <shipmints@gmail.com>
> Date: Mon, 15 Jul 2024 22:12:46 -0700
> From:  Joseph Turner via "Bug reports for GNU Emacs,
>  the Swiss army knife of text editors" <bug-gnu-emacs@gnu.org>
> 
> Juri Linkov <juri@linkov.net> writes:
> 
> > Let's see what Joseph and Stephane think.
> 
> Please see the attached patches, where the first three commits are
> intended to be applied to the emacs-30 branch, and the final commit
> removes the obsolete `tab-bar-auto-width-faces' on master.

I'm not sure I understand why they need to be installed on emacs-30.
Is this a regression in Emacs 29 or Emacs 30?  What bad things will
happen if we install the changes on master instead>

> Does this change warrant a NEWS entry?

Yes, since you are adding a hook variable.  Obsolescence of a variable
also requires a NEWS entry.

> From: Joseph Turner <joseph@breatheoutbreathe.in>
> Date: Mon, 15 Jul 2024 22:07:22 -0700
> Subject: [PATCH 4/4] Remove obsolete tab-bar-auto-width-faces
> 
> * lisp/tab-bar.el (tab-bar-auto-width-faces):  Remove.
> (tab-bar-auto-width): Only run tab-bar-auto-width-functions.

We don't usually remove a variable one major release after it has been
obsoleted.  It's too soon.

Thanks.