From 864cc6453721d28cb934896a27bd795158cdf1b4 Mon Sep 17 00:00:00 2001
From: Kristaps Dzonsons <kristaps@bsd.lv>
Date: Thu, 28 Jul 2011 14:53:22 +0000
Subject: Fix border condition in `tr' grokking arguments.

---
 roff.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/roff.c b/roff.c
index cfd4c876..ac75b2a8 100644
--- a/roff.c
+++ b/roff.c
@@ -1,4 +1,4 @@
-/*	$Id: roff.c,v 1.164 2011/07/28 14:17:11 kristaps Exp $ */
+/*	$Id: roff.c,v 1.165 2011/07/28 14:53:22 kristaps Exp $ */
 /*
  * Copyright (c) 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv>
  * Copyright (c) 2010, 2011 Ingo Schwarze <schwarze@openbsd.org>
@@ -1383,10 +1383,11 @@ roff_tr(ROFF_ARGS)
 				return(ROFF_IGN);
 			}
 			ssz = (size_t)(p - second);
-		} else if ('\0' == *p) {
+		} else if ('\0' == *second) {
 			mandoc_msg(MANDOCERR_ARGCOUNT, r->parse, 
 					ln, (int)(p - *bufp), NULL);
 			second = " ";
+			p--;
 		}
 
 		roff_setstrn(&r->chrtab, first, fsz, second, ssz, 0);
-- 
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