Re: Making `x-underline-at-descent-line' a face attribute

[Eli Zaretskii]

> From: Juri Linkov <juri@linkov.net>
> Date: Sat, 08 Jan 2022 20:20:32 +0200
> Cc: Po Lu <luangruo@yahoo.com>, Jim Porter <jporterbugs@gmail.com>,
>  Eli Zaretskii <eliz@gnu.org>, emacs-devel@gnu.org
> 
> > What I see is that Firefox doesn't have any whitespace between tabs,
> > fixed width, a bigger close button, the current tab is highlighted with
> > a colored line at the top
> 
> Sadly, no colored line at the top, and the current tab has the same
> appearance as other tabs, so it's impossible to notice the current tab
> when looking at the tab bar.  This is a usability failure.

What version of Firefox do you have there?  In version 95.0.2, the
latest AFAIK, the current tab has a distinct appearance and is very
easy to spot.  Perhaps you customized the Firefox display to use
non-default colors and effects?