> From: Juri Linkov <juri@linkov.net>
> Cc: Eli Zaretskii <eliz@gnu.org>,  76394@debbugs.gnu.org
> Date: Sun, 02 Mar 2025 19:15:08 +0200
>
> > +      /* display_tab_bar does not yet support R2L.  */
> > +      eassert (row->reversed_p);
>
> Is this still needed?

It should be the other way around:

  eassert (!row->reversed_p);