bug#18793: 24.4; zero width rectangular selection displaces text

[Eli Zaretskii]

> From: Lars Ingebrigtsen <larsi@gnus.org>
> Cc: monnier@iro.umontreal.ca,  carlosjosepita@gmail.com,  
> 18793@debbugs.gnu.org
> Date: Sat, 07 May 2022 12:11:56 +0200
> 
> Eli Zaretskii <eliz@gnu.org> writes:
> 
> > It does?  AFAIK, we don't show the vertical line when there's a
> > character at that column, and consequently displaying the cursor
> > doesn't need to cope with any issues caused by that.
> 
> Point before the indicator:

We are mis-communicating, I think.  I meant to say that when there's a
character at the fill-column position (i.e., the line is longer than
fill-column), we display the character there, not the indicator.  What
you show is what happens when the fill-column is after EOL, in which
case there's no character shown at the fill-column, and no problem to
display the indicator instead of that no-character.