1 files changed, 10 insertions, 2 deletions

diff --git a/lisp/international/mule.el b/lisp/international/mule.el
index 757f4c1e049..976282bbf98 100644
--- a/lisp/international/mule.el
+++ b/lisp/international/mule.el
@@ -243,10 +243,18 @@ attribute."
     ;; If :dimension is omitted, get the dimension from :code-space.
     (let ((dimension (plist-get props :dimension)))
       (or dimension
-          (progn
-            (setq dimension (/ (length (plist-get props :code-space)) 2))
+          (let ((code-space (plist-get props :code-space)))
+            (setq dimension (if code-space (/ (length code-space) 2) 4))
             (setq props (plist-put props :dimension dimension)))))
 
+    (let ((code-space (plist-get props :code-space)))
+      (or code-space
+          (let ((dimension (plist-get props :dimension)))
+            (setq code-space (make-vector 8 0))
+            (dotimes (i dimension)
+              (aset code-space (1+ (* i 2)) #xFF))
+            (setq props (plist-put props :code-space code-space)))))
+
     ;; If :emacs-mule-id is specified, update emacs-mule-charset-table.
     (let ((emacs-mule-id (plist-get props :emacs-mule-id)))
       (if (integerp emacs-mule-id)