From 6773fbde9b5bf91ad32caf6aefb8902ba59181fa Mon Sep 17 00:00:00 2001
From: Ingo Schwarze <schwarze@openbsd.org>
Date: Sat, 18 Aug 2018 22:05:43 +0000
Subject: Bugfix: When a line ends with '\ \"', don't strip the trailing space
 because that turned it into a bogus line continuation.

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

diff --git a/roff.c b/roff.c
index bd8c8250..0c733006 100644
--- a/roff.c
+++ b/roff.c
@@ -1,4 +1,4 @@
-/*	$Id: roff.c,v 1.334 2018/08/18 21:37:01 schwarze Exp $ */
+/*	$Id: roff.c,v 1.335 2018/08/18 22:05:43 schwarze Exp $ */
 /*
  * Copyright (c) 2008-2012, 2014 Kristaps Dzonsons <kristaps@bsd.lv>
  * Copyright (c) 2010-2015, 2017, 2018 Ingo Schwarze <schwarze@openbsd.org>
@@ -1214,7 +1214,8 @@ roff_res(struct roff *r, struct buf *buf, int ln, int pos)
 
 		/* Discard normal comments. */
 
-		while (stesc > start && stesc[-1] == ' ')
+		while (stesc > start && stesc[-1] == ' ' &&
+		    (stesc == start + 1 || stesc[-2] != '\\'))
 			stesc--;
 		*stesc = '\0';
 		break;
-- 
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