bug#45915: 28.2; delete-char deletes two letters

[Eli Zaretskii]

> From: Tak Kunihiro <homeros.misasa@gmail.com>
> Cc: Tak Kunihiro <homeros.misasa@gmail.com>,  yantar92@gmail.com,
>   45915@debbugs.gnu.org
> Cc: tkk@misasa.okayama-u.ac.jp
> Date: Mon, 19 Sep 2022 10:24:55 +0900
> 
> However, when two spaces are shown as one letter, point moves randomly
> when I press <up>.  I cannot keep editing with this condition.
> 
> I show recipe to reproduce this situation. Is there a trick to move
> point in expected way?

This is an unrelated bug, now fixed on the master branch.

(A workaround is to press C-f or <RIGHT> before <UP>.)