From bb7e993734ec246d183cb55fd4b3d03095c64984 Mon Sep 17 00:00:00 2001
From: Eli Zaretskii <eliz@gnu.org>
Date: Sun, 8 Mar 2026 12:00:53 +0200
Subject: [PATCH] Fix mpuz under text-scaling

* lisp/play/mpuz.el (mpuz-switch-to-window): Don't unconditionally
turn on 'mpuz-mode', as that kills all local variables.  (Bug#80567)
---
 lisp/play/mpuz.el | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/lisp/play/mpuz.el b/lisp/play/mpuz.el
index a5125da3dfb..72169ba4a74 100644
--- a/lisp/play/mpuz.el
+++ b/lisp/play/mpuz.el
@@ -333,7 +333,8 @@ You may abort a game by typing \\<mpuz-mode-map>\\[mpuz-offer-abort]."
                  (mpuz-create-buffer))))
     (switch-to-buffer buf)
     (setq buffer-read-only t)
-    (mpuz-mode)))
+    (or (derived-mode-p 'mpuz-mode)
+        (mpuz-mode))))
 
 
 ;; Game control