===================================================================
RCS file: /cvs/mandoc/mdoc_validate.c,v
retrieving revision 1.181
retrieving revision 1.182
diff -u -p -r1.181 -r1.182
--- mandoc/mdoc_validate.c	2011/12/03 16:58:54	1.181
+++ mandoc/mdoc_validate.c	2012/03/23 05:50:25	1.182
@@ -1,4 +1,4 @@
-/*	$Id: mdoc_validate.c,v 1.181 2011/12/03 16:58:54 schwarze Exp $ */
+/*	$Id: mdoc_validate.c,v 1.182 2012/03/23 05:50:25 kristaps Exp $ */
 /*
  * Copyright (c) 2008, 2009, 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv>
  * Copyright (c) 2010, 2011 Ingo Schwarze <schwarze@openbsd.org>
@@ -661,8 +661,13 @@ pre_bl(PRE_ARGS)
 			comp = 1;
 			break;
 		case (MDOC_Width):
-			dup = (NULL != n->norm->Bl.width);
-			width = n->args->argv[i].value[0];
+			/* NB: this can be empty! */
+			if (n->args->argv[i].sz) {
+				width = n->args->argv[i].value[0];
+				dup = (NULL != n->norm->Bl.width);
+				break;
+			}
+			mdoc_nmsg(mdoc, n, MANDOCERR_IGNARGV);
 			break;
 		case (MDOC_Offset):
 			/* NB: this can be empty! */