bug#32950: 27.0.50; Strange display bug in *Help* buffer

[Eli Zaretskii]

> Date: Sat, 06 Nov 2021 10:00:28 +0200
> From: Eli Zaretskii <eliz@gnu.org>
> Cc: 32950@debbugs.gnu.org, stefan@marxist.se, fgunbin@fastmail.fm
> 
> > From: Lars Ingebrigtsen <larsi@gnus.org>
> > Date: Sat, 06 Nov 2021 03:31:15 +0100
> > Cc: 32950@debbugs.gnu.org, Filipp Gunbin <fgunbin@fastmail.fm>
> > 
> > Hm...  hang on a minute.  Can't we just use an underline on TUI?  Or was
> > that what Customize did?  Hm...  OK, tried it now, and it seems to work
> > without the odd point motion?  So I've now pushed it to Emacs 29.
> 
> Not all terminals support underline.

And, as I suspected, we now show no separator at all on those text
terminals which don't support the underline attribute.  This is a
regression, I think.