===================================================================
RCS file: /cvs/mandoc/mdoc_validate.c,v
retrieving revision 1.174
retrieving revision 1.179
diff -u -p -r1.174 -r1.179
--- mandoc/mdoc_validate.c	2011/08/16 12:23:51	1.174
+++ mandoc/mdoc_validate.c	2011/11/19 13:29:47	1.179
@@ -1,4 +1,4 @@
-/*	$Id: mdoc_validate.c,v 1.174 2011/08/16 12:23:51 kristaps Exp $ */
+/*	$Id: mdoc_validate.c,v 1.179 2011/11/19 13:29:47 schwarze Exp $ */
 /*
  * Copyright (c) 2008, 2009, 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv>
  * Copyright (c) 2010, 2011 Ingo Schwarze <schwarze@openbsd.org>
@@ -545,12 +545,11 @@ check_text(struct mdoc *m, int ln, int pos, char *p)
 {
 	char		*cp;
 
-	cp = p;
-	for (cp = p; NULL != (p = strchr(p, '\t')); p++) {
-		if (MDOC_LITERAL & m->flags)
-			continue;
-		mdoc_pmsg(m, ln, (int)(p - cp), MANDOCERR_BADTAB);
-	}
+	if (MDOC_LITERAL & m->flags)
+		return;
+
+	for (cp = p; NULL != (p = strchr(p, '\t')); p++)
+		mdoc_pmsg(m, ln, pos + (int)(p - cp), MANDOCERR_BADTAB);
 }
 
 static int
@@ -703,7 +702,7 @@ pre_bl(PRE_ARGS)
 			if (LIST_column == lt) {
 				n->norm->Bl.ncols = 
 					n->args->argv[i].sz;
-				n->norm->Bl.cols = (const char **)
+				n->norm->Bl.cols = (void *)
 					n->args->argv[i].value;
 			}
 		}
@@ -1521,7 +1520,7 @@ post_bl_head(POST_ARGS) 
 		((size_t)mdoc->last->nchild * sizeof(char *));
 
 	mdoc->last->norm->Bl.ncols = np->args->argv[j].sz;
-	mdoc->last->norm->Bl.cols = (const char **)np->args->argv[j].value;
+	mdoc->last->norm->Bl.cols = (void *)np->args->argv[j].value;
 
 	for (i = 0, nn = mdoc->last->child; nn; i++) {
 		np->args->argv[j].value[i] = nn->string;
@@ -1693,6 +1692,14 @@ post_rs(POST_ARGS)
 		mdoc_nmsg(mdoc, nn, MANDOCERR_CHILD);
 		mdoc_node_delete(mdoc, nn);
 	}
+
+	/*
+	 * Nothing to sort if only invalid nodes were found
+	 * inside the `Rs' body.
+	 */
+
+	if (NULL == mdoc->last->child)
+		return(1);
 
 	/*
 	 * The full `Rs' block needs special handling to order the