master da5ef57fe4: * lisp/simple.el (delete-forward-char): Fix bug #56237.

[Eli Zaretskii]

branch: master
commit da5ef57fe475dbbe68c9eaad48f24ca3f46867b0
Author: Eli Zaretskii <eliz@gnu.org>
Commit: Eli Zaretskii <eliz@gnu.org>

    * lisp/simple.el (delete-forward-char): Fix bug #56237.
---
 lisp/simple.el | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/lisp/simple.el b/lisp/simple.el
index 2b11a6362f..a750eed72b 100644
--- a/lisp/simple.el
+++ b/lisp/simple.el
@@ -1508,7 +1508,10 @@ the actual saved text might be different from what was 
killed."
              ;; 'find-composition' will return (FROM TO ....) or nil.
              (setq cmp (find-composition pos))
              (if cmp
-                 (setq pos (cadr cmp))
+                 ;; TO can be at POS, in which case we want to make
+                 ;; sure we advance at least by 1 character.
+                 (let ((cmp-end (cadr cmp)))
+                   (setq pos (max (1+ pos) cmp-end)))
                (setq pos (1+ pos)))
              (setq n (1- n)))
            (delete-char (- pos start) killflag)))