(double-setup): Only copy `key-translation-map' if it is a keymap.

a4e59635 · Richard M. Stallman · a11a197b · a4e59635
Commit a4e59635 authored Aug 12, 1998 by Richard M. Stallman
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lisp/double.el lisp/double.el +3 -1

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--- a/lisp/double.el
+++ b/lisp/double.el
@@ -145,7 +145,9 @@ but not `C-u X' or `ESC X' since the X is not the prefix key."
 	;; Set up key-translation-map as indicated by `double-map'.
 	(kill-local-variable 'key-translation-map)
 	(make-local-variable 'key-translation-map)
-	(setq key-translation-map (copy-keymap key-translation-map))
+	(setq key-translation-map (if (keymapp key-translation-map)
+				      (copy-keymap key-translation-map)
+				    (make-sparse-keymap)))
 	(mapcar (function (lambda (entry)
 			    (define-key key-translation-map
 			      (vector (nth 0 entry))