GNU bug report logs - #59947
30.0.50; Underline of tab-bar face does not respect x-underline-at-descent-line

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Message #8 received at 59947 <at> debbugs.gnu.org (full text, mbox):

From: Eli Zaretskii <eliz <at> gnu.org>
To: Gabriel <gabriel376 <at> hotmail.com>
Cc: 59947 <at> debbugs.gnu.org
Subject: Re: bug#59947: 30.0.50; Underline of tab-bar face does not respect
 x-underline-at-descent-line
Date: Sat, 10 Dec 2022 21:12:07 +0200

> From: Gabriel <gabriel376 <at> hotmail.com>
> Date: Sat, 10 Dec 2022 15:22:20 -0300
> 
> Apparently, the underline property of tab-bar (and tab-bar-*) face does
> not respect the option x-underline-at-descent-line.  When
> x-underline-at-descent-line is set to t, the underline is displayed at
> descent level (below of bottom box), but in tab-bar face it's displayed
> at the baseline (above of bottom box).  See steps below and attached
> images for more information.

The x-underline-at-descent-line option is only supported for windows
that display buffers.  And the tab bar uses a pseudo-window that has
no buffer (like the tool bar in builds that don't have a
toolkit-provided tool bar).

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