(undecided): Set ascii in safe-charsets property.

diff --git a/lisp/international/mule-conf.el b/lisp/international/mule-conf.el
index dc8861f025b0db68867a751181bffd92ec14984e..6494d695fc307935d5b2c5666a00c820be0ce598 100644 (file)
--- a/lisp/international/mule-conf.el
+++ b/lisp/international/mule-conf.el
@@ -228,7 +228,8 @@
 
 (put 'undecided 'coding-system
      (vector t ?- "No conversion on encoding, automatic conversion on decoding"
-            (list 'alias-coding-systems '(undecided))
+            (list 'alias-coding-systems '(undecided)
+                  'safe-charsets '(ascii))
             nil))
 (setq coding-system-list (cons 'undecided coding-system-list))
 (setq coding-system-alist (cons '("undecided") coding-system-alist))