===================================================================
RCS file: /cvs/mandoc/Attic/validate.c,v
retrieving revision 1.43
retrieving revision 1.45
diff -u -p -r1.43 -r1.45
--- mandoc/Attic/validate.c	2009/01/20 12:51:28	1.43
+++ mandoc/Attic/validate.c	2009/01/20 20:56:21	1.45
@@ -1,4 +1,4 @@
-/* $Id: validate.c,v 1.43 2009/01/20 12:51:28 kristaps Exp $ */
+/* $Id: validate.c,v 1.45 2009/01/20 20:56:21 kristaps Exp $ */
 /*
  * Copyright (c) 2008 Kristaps Dzonsons <kristaps@kth.se>
  *
@@ -21,6 +21,14 @@
 
 #include "private.h"
 
+/*
+ * Pre- and post-validate macros as they're parsed.  Pre-validation
+ * occurs when the macro has been detected and its arguments parsed.
+ * Post-validation occurs when all child macros have also been parsed.
+ * In the ELEMENT case, this is simply the parameters of the macro; in
+ * the BLOCK case, this is the HEAD, BODY, TAIL and so on.
+ */
+
 typedef	int	(*v_pre)(struct mdoc *, struct mdoc_node *);
 typedef	int	(*v_post)(struct mdoc *);
 
@@ -129,6 +137,9 @@ static	v_post	posts_at[] = { post_at, NULL };
 static	v_post	posts_xr[] = { eerr_ge1, eerr_le2, post_xr, NULL };
 static	v_post	posts_nm[] = { post_nm, NULL };
 static	v_post	posts_bf[] = { herr_le1, post_bf, NULL };
+static	v_post	posts_rs[] = { herr_eq0, bwarn_ge1, NULL };
+static	v_post	posts_fo[] = { bwarn_ge1, NULL };
+static	v_post	posts_bk[] = { herr_eq0, bwarn_ge1, NULL };
 
 /* Per-macro pre- and post-child-check routine collections. */
 
@@ -220,7 +231,7 @@ const	struct valids mdoc_valids[MDOC_MAX] = {
 	{ NULL, NULL }, /* Qo */
 	{ NULL, posts_wline }, /* Qq */
 	{ NULL, NULL }, /* Re */
-	{ NULL, NULL }, /* Rs */
+	{ NULL, posts_rs }, /* Rs */
 	{ NULL, NULL }, /* Sc */
 	{ NULL, NULL }, /* So */
 	{ NULL, posts_wline }, /* Sq */
@@ -231,11 +242,11 @@ const	struct valids mdoc_valids[MDOC_MAX] = {
 	{ NULL, NULL }, /* Ux */
 	{ NULL, NULL }, /* Xc */
 	{ NULL, NULL }, /* Xo */
-	{ NULL, NULL }, /* Fo */ 
+	{ NULL, posts_fo }, /* Fo */ 
 	{ NULL, NULL }, /* Fc */ 
 	{ NULL, NULL }, /* Oo */
 	{ NULL, NULL }, /* Oc */
-	{ NULL, NULL }, /* Bk */
+	{ NULL, posts_bk }, /* Bk */
 	{ NULL, NULL }, /* Ek */
 	{ NULL, posts_notext }, /* Bt */
 	{ NULL, NULL }, /* Hf */