(quail-defrule-internal): Add missing `error' call for null key.

diff --git a/lisp/international/quail.el b/lisp/international/quail.el
index 3998764957ed292b11551de3be0231a8f63b8da6..b21d2623d80985b36864695c4a901a3b3430075a 100644 (file)
--- a/lisp/international/quail.el
+++ b/lisp/international/quail.el
@@ -1096,7 +1096,7 @@ Optional 5th arg DECODE-MAP is a Quail decode map.
 Optional 6th arg PROPS is a property list annotating TRANS.  See the
 function `quail-define-rules' for the detail."
   (if (null (stringp key))
-      "Invalid Quail key `%s'" key)
+      (error "Invalid Quail key `%s'" key))
   (if (not (or (numberp trans) (stringp trans) (vectorp trans)
               (consp trans)
               (symbolp trans)