correct mdoc_node.sec in .Sh HEAD

correct mdoc_node.sec in .Sh HEAD

[Ingo Schwarze]

OK to commit to bsd.lv as well?
  Ingo

----- Forwarded message from Ingo Schwarze <schwarze@cvs.openbsd.org> -----

From: Ingo Schwarze <schwarze@cvs.openbsd.org>
Date: Wed, 16 Nov 2011 12:47:58 -0700 (MST)
To: source-changes@cvs.openbsd.org
Subject: CVS: cvs.openbsd.org: src

CVSROOT:	/cvs
Module name:	src
Changes by:	schwarze@cvs.openbsd.org	2011/11/16 12:47:58

Modified files:
	usr.bin/mandoc : mdoc_validate.c 

Log message:
When processing .Sh HEAD, as soon as we know which section this is,
fix up the section attributes of the HEAD, it's parent BLOCK, and
all its (text) children.  This is required because the section
attributes get set when each node is allocated, i.e. before processing
the content of the node itself.  Thus, the listed nodes got the section
attribute of the preceding section.  No need to fix up the BODY, all
is fine there already.
Found while implementing TYPE_Sh for mandocdb(8).

----- End forwarded message -----

Index: mdoc_validate.c
===================================================================
RCS file: /cvs/src/usr.bin/mandoc/mdoc_validate.c,v
retrieving revision 1.96
diff -u -p -r1.96 mdoc_validate.c
--- mdoc_validate.c	16 Oct 2011 12:18:32 -0000	1.96
+++ mdoc_validate.c	16 Nov 2011 19:22:41 -0000
@@ -1814,6 +1814,7 @@ static int
 post_sh_head(POST_ARGS)
 {
 	char		 buf[BUFSIZ];
+	struct mdoc_node *n;
 	enum mdoc_sec	 sec;
 	int		 c;
 
@@ -1847,6 +1848,10 @@ post_sh_head(POST_ARGS)
 	/* Mark our last section. */
 
 	mdoc->lastsec = sec;
+	mdoc->last->parent->sec = sec;
+	mdoc->last->sec = sec;
+	for (n = mdoc->last->child; n; n = n->next)
+		n->sec = sec;
 
 	/* We don't care about custom sections after this. */
 
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