===================================================================
RCS file: /cvs/mandoc/roff.c,v
retrieving revision 1.239
retrieving revision 1.240
diff -u -p -r1.239 -r1.240
--- mandoc/roff.c	2014/11/19 01:20:25	1.239
+++ mandoc/roff.c	2014/12/15 23:43:26	1.240
@@ -1,4 +1,4 @@
-/*	$Id: roff.c,v 1.239 2014/11/19 01:20:25 schwarze Exp $ */
+/*	$Id: roff.c,v 1.240 2014/12/15 23:43:26 schwarze Exp $ */
 /*
  * Copyright (c) 2010, 2011, 2012 Kristaps Dzonsons <kristaps@bsd.lv>
  * Copyright (c) 2010-2014 Ingo Schwarze <schwarze@openbsd.org>
@@ -1258,6 +1258,8 @@ roff_evalcond(struct roff *r, int ln, const char *v, i
 		wanttrue = 1;
 
 	switch (v[*pos]) {
+	case '\0':
+		return(0);
 	case 'n':
 		/* FALLTHROUGH */
 	case 'o':