bug#41278: 27.0.91; incorrect U+203E OVERLINE alignment with Fantasque Sans Mono

[Eli Zaretskii]

> Date: Fri, 15 May 2020 12:28:48 +0200
> From: Vincent Lefevre <vincent@vinc17.net>
> Cc: 41278@debbugs.gnu.org
> 
> >     - is Fantasque being used for the U+203E (check with C-u C-x =)
> 
> No:
> 
>     xfthb:-PfEd-Linux Libertine Display 
> O-normal-normal-normal-*-22-*-*-*-*-0-iso10646-1 (#x619)
> 
> So I suppose that XTerm does a better replacement.

Does xterm support variable-pitch fonts?  If not, you will always see
alignment in xterm, but not always in Emacs.