bug#56237: 29.0.50; delete-forward-char fails to delete character

[Eli Zaretskii]

> From: visuweshm@gmail.com
> Date: Sun, 26 Jun 2022 21:37:07 +0530
> 
> delete-forward-char fails to delete if the point is between two composed
> characters.  To demonstrate,
> 
>         1. emacs -Q
>         2. Yank "ரு போ" to the *scratch* buffer
>         3. Place the cursor on the space character and say <Delete>
> 
> Observe how delete-forward-char does nothing.

This is a feature (new with Emacs 29): delete-forward-char deletes
entire grapheme clusters.  Use C-d if you want to delete individual
codepoints inside a grapheme cluster.