===================================================================
RCS file: /cvsrepo/anoncvs/cvs/src/usr.bin/mandoc/mandoc.c,v
retrieving revision 1.52
retrieving revision 1.53
diff -u -r1.52 -r1.53
--- src/usr.bin/mandoc/mandoc.c	2014/07/06 19:08:56	1.52
+++ src/usr.bin/mandoc/mandoc.c	2014/08/18 13:25:54	1.53
@@ -1,4 +1,4 @@
-/*	$Id: mandoc.c,v 1.52 2014/07/06 19:08:56 schwarze Exp $ */
+/*	$Id: mandoc.c,v 1.53 2014/08/18 13:25:54 schwarze Exp $ */
 /*
  * Copyright (c) 2008, 2009, 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv>
  * Copyright (c) 2011, 2012, 2013, 2014 Ingo Schwarze <schwarze@openbsd.org>
@@ -197,7 +197,8 @@
 		/* FALLTHROUGH */
 	case 'x':
 		if (strchr(" %&()*+-./0123456789:<=>", **start)) {
-			++*end;
+			if ('\0' != **start)
+				++*end;
 			return(ESCAPE_ERROR);
 		}
 		gly = ESCAPE_IGNORE;