===================================================================
RCS file: /cvs/mandoc/Attic/validate.c,v
retrieving revision 1.71
retrieving revision 1.74
diff -u -p -r1.71 -r1.74
--- mandoc/Attic/validate.c	2009/03/08 11:41:22	1.71
+++ mandoc/Attic/validate.c	2009/03/08 18:02:36	1.74
@@ -1,4 +1,4 @@
-/* $Id: validate.c,v 1.71 2009/03/08 11:41:22 kristaps Exp $ */
+/* $Id: validate.c,v 1.74 2009/03/08 18:02:36 kristaps Exp $ */
 /*
  * Copyright (c) 2008 Kristaps Dzonsons <kristaps@kth.se>
  *
@@ -638,6 +638,7 @@ check_args(struct mdoc *m, const struct mdoc_node *n)
 	if (NULL == n->args)
 		return(1);
 
+	assert(n->args->argc);
 	for (i = 0; i < (int)n->args->argc; i++)
 		if ( ! check_argv(m, n, &n->args->argv[i]))
 			return(0);
@@ -684,8 +685,12 @@ check_text(struct mdoc *mdoc, int line, int pos, const
 			p += (int)c - 1;
 			continue;
 		}
-		return(mdoc_perr(mdoc, line, pos, 
-				"invalid escape sequence"));
+		if ( ! (MDOC_IGN_ESCAPE & mdoc->pflags))
+			return(mdoc_perr(mdoc, line, pos, 
+					"invalid escape sequence"));
+		if ( ! mdoc_pwarn(mdoc, line, pos, WARN_SYNTAX,
+					"invalid escape sequence"))
+			return(0);
 	}
 
 	return(1);
@@ -891,7 +896,7 @@ static int
 pre_an(PRE_ARGS)
 {
 
-	if (n->args && 1 >= n->args->argc)
+	if (NULL == n->args || 1 == n->args->argc)
 		return(1);
 	return(mdoc_nerr(mdoc, n, "only one argument allowed"));
 }