> From: Elijah Gabe Pérez <eg642616@gmail.com>
> Cc: Eli Zaretskii <eliz@gnu.org>,  77544@debbugs.gnu.org
> Date: Sat, 05 Apr 2025 12:08:02 -0600
>
> Gerd Möllmann <gerd.moellmann@gmail.com> writes:
>
>  Nothing to add to your comments ATM, but maybe an alternative idea: how
>  about solving this with a new type of display property for drawing a
>  horizontal line? Say `horizontal-line WIDTH' where WIDTH could be nil or
>  something to draw a line to the end of the display area? That would have
>  the advantage that it would be a relatively locally confined change and
>  would have no impact when not used, and hopefully little potential to
>  break unrelated things when not used.
>
> I like this idea.
>
>  One would have to have some Lisp though that puts the display property
>  on form-feeds.
>
> In this case I would move this code to Lisp instead of C.

A new kind of display property must be implemented in C.  The rest of
the code can be in Lisp.