--- lex.c.orig	Wed Aug  6 15:46:09 1997
+++ lex.c	Fri Oct  3 01:18:53 1997
@@ -257,7 +257,7 @@
 #endif
 	  { "filetype", FILETYPE,NULL },
 	  { "mbsubstr", INTFUNC3,MBSubStr },
-	  { "mbstrlen", INTFUNC3,MBStrLen },
+	  { "mbstrlen", INTFUNC1,MBStrLen },
 	  { NULL,0,NULL } },
 
 	{ { "endswitch", ENDSWITCH,NULL }, /* 9 */