===================================================================
RCS file: /cvsrepo/anoncvs/cvs/src/usr.bin/mandoc/roff.c,v
retrieving revision 1.99
retrieving revision 1.100
diff -u -r1.99 -r1.100
--- src/usr.bin/mandoc/roff.c	2014/09/06 22:38:35	1.99
+++ src/usr.bin/mandoc/roff.c	2014/09/06 23:24:27	1.100
@@ -1,4 +1,4 @@
-/*	$OpenBSD: roff.c,v 1.99 2014/09/06 22:38:35 schwarze Exp $ */
+/*	$OpenBSD: roff.c,v 1.100 2014/09/06 23:24:27 schwarze Exp $ */
 /*
  * Copyright (c) 2010, 2011, 2012 Kristaps Dzonsons <kristaps@bsd.lv>
  * Copyright (c) 2010-2014 Ingo Schwarze <schwarze@openbsd.org>
@@ -756,6 +756,15 @@
 			return(tbl_read(r->tbl, ln, *bufp, pos));
 		return(roff_parsetext(bufp, szp, pos, offs));
 	}
+
+	/* Skip empty request lines. */
+
+	if ((*bufp)[pos] == '"') {
+		mandoc_msg(MANDOCERR_COMMENT_BAD, r->parse,
+		    ln, pos, NULL);
+		return(ROFF_IGN);
+	} else if ((*bufp)[pos] == '\0')
+		return(ROFF_IGN);
 
 	/*
 	 * If a scope is open, go to the child handler for that macro,