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bug#39649: 27.0.60; tab-line doesn't scroll


From: João Guerra
Subject: bug#39649: 27.0.60; tab-line doesn't scroll
Date: Thu, 27 Feb 2020 22:13:21 +0100

1. emacs -Q
2. M-x load-file tab-line-1.el
3. M-x global-tab-line-mode
4. M-: (setq tab-line-tabs-function #'tab-line-tabs-mode-buffers)
5. https://youtu.be/fQlrP0dlBbw

On Thu, 27 Feb 2020 at 00:19, Juri Linkov <address@hidden> wrote:
>
> > It does have your patch, but just the latest one in this thread.
> > Video demonstration: https://youtu.be/xq_JMBO4SyI.
> > I'm using Emacs from
> > https://alpha.gnu.org/gnu/emacs/pretest/windows/emacs-27/. It does
> > have XPM support.
>
> Thanks for the recipe.  I tried everything possible, but still
> no bug reproduction.
>
> Given the above, may I ask you to run some debugging diagnostics:
>
> 1. load the attached file, e.g. with M-x load-file
> 2. M-x global-tab-line-mode
> 3. perform all steps from your bug report
> 4. after the last step, when the tab selection fails, execute
>
>    M-x test1 RET
>
> and make a screenshot.  The screenshot should look like on the image attached.
>
> I suspect that the problem comes from the tab-line fontified differently
> by core and when fontified manually in the buffer.
>





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