Fix savegames in dunnet

* lisp/play/dunnet.el (dun-rot13): Use the standard rot13-region instead
  of separate implementation.

1 files changed, 1 insertions, 22 deletions

diff --git a/lisp/play/dunnet.el b/lisp/play/dunnet.el
index ba137f54d8c..8aba50b8dc5 100644
--- a/lisp/play/dunnet.el
+++ b/lisp/play/dunnet.el
@@ -1321,29 +1321,8 @@ for a moment, then straighten yourself up.
           (setq new-inven (append new-inven (list x)))))
     (setq dun-inventory new-inven)))
 
-
-(let ((i 0) (lower "abcdefghijklmnopqrstuvwxyz") upper)
-  (setq dun-translate-table (make-vector 256 0))
-  (while (< i 256)
-    (aset dun-translate-table i i)
-    (setq i (1+ i)))
-  (setq lower (concat lower lower))
-  (setq upper (upcase lower))
-  (setq i 0)
-  (while (< i 26)
-    (aset dun-translate-table (+ ?a i) (aref lower (+ i 13)))
-    (aset dun-translate-table (+ ?A i) (aref upper (+ i 13)))
-      (setq i (1+ i))))
-
 (defun dun-rot13 ()
-  (let (str len (i 0))
-    (setq str (buffer-substring (point-min) (point-max)))
-    (setq len (length str))
-    (while (< i len)
-      (aset str i (aref dun-translate-table (aref str i)))
-      (setq i (1+ i)))
-    (erase-buffer)
-    (insert str)))
+  (rot13-region (point-min) (point-max)))
 
 ;;;;
 ;;;; This section defines the globals that are used in dunnet.