Fix update-glyphless-char-display variable setting

* lisp/international/characters.el
(update-glyphless-char-display): Only set the variable if given.

diff --git a/lisp/international/characters.el b/lisp/international/characters.el
index 3a8e968c34b6f3e21793e59ae7d78bb1fa7987a8..9e0cc88d804171f1843551a637c23bfaa2872834 100644 (file)
--- a/lisp/international/characters.el
+++ b/lisp/international/characters.el
@@ -1522,7 +1522,7 @@ Setup `char-width-table' appropriate for non-CJK language environment."
 This function updates the char-table `glyphless-char-display',
 and is intended to be used in the `:set' attribute of the
 option `glyphless-char-display'."
-  (when value
+  (when variable
     (set-default variable value))
   (dolist (elt value)
     (let ((target (car elt))