From 6cada7207531441ac6e3c2092d5039902122137b Mon Sep 17 00:00:00 2001
From: Kristaps Dzonsons <kristaps@bsd.lv>
Date: Sun, 27 Jun 2010 16:36:22 +0000
Subject: Allow registers to be unset.  Implement and document the `.nr nS
 val'.

---
 mdoc.c | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

(limited to 'mdoc.c')

diff --git a/mdoc.c b/mdoc.c
index 6d2334a6..1184c641 100644
--- a/mdoc.c
+++ b/mdoc.c
@@ -1,4 +1,4 @@
-/*	$Id: mdoc.c,v 1.150 2010/06/27 16:18:13 kristaps Exp $ */
+/*	$Id: mdoc.c,v 1.151 2010/06/27 16:36:22 kristaps Exp $ */
 /*
  * Copyright (c) 2008, 2009 Kristaps Dzonsons <kristaps@bsd.lv>
  *
@@ -380,6 +380,15 @@ node_alloc(struct mdoc *m, int line, int pos,
 	if (SEC_SYNOPSIS == p->sec)
 		p->flags |= MDOC_SYNPRETTY;
 
+	/* Register analysis. */
+
+	if (m->regs->regs[(int)REG_nS].set) {
+		if (m->regs->regs[(int)REG_nS].v.u)
+			p->flags |= MDOC_SYNPRETTY;
+		else
+			p->flags &= ~MDOC_SYNPRETTY;
+	}
+
 	return(p);
 }
 
-- 
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