From 5e0e65fbd25d66b3479bdd089f840bb078f27d13 Mon Sep 17 00:00:00 2001
From: Ingo Schwarze <schwarze@openbsd.org>
Date: Sun, 10 Nov 2013 21:34:04 +0000
Subject: Support the alternative syntax \C'uXXXX' for Unicode characters. It
 is already documented in the Heirloom troff manual, and groff handles it as
 well.

Bug reported by Bjarni Ingi Gislason <bjarniig at rhi dot hi dot is>
on <bug-groff at gnu dot org>.  Well, admittedly, that bug was reported
against groff, but mandoc was even more broken than groff with respect
to this syntax...
---
 mandoc.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

(limited to 'mandoc.c')

diff --git a/mandoc.c b/mandoc.c
index 963b5b49..2936ef93 100644
--- a/mandoc.c
+++ b/mandoc.c
@@ -1,4 +1,4 @@
-/*	$Id: mandoc.c,v 1.69 2013/10/05 20:30:05 schwarze Exp $ */
+/*	$Id: mandoc.c,v 1.70 2013/11/10 21:34:04 schwarze Exp $ */
 /*
  * Copyright (c) 2008, 2009, 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv>
  * Copyright (c) 2011, 2012, 2013 Ingo Schwarze <schwarze@openbsd.org>
@@ -93,8 +93,11 @@ mandoc_escape(const char const **end, const char const **start, int *sz)
 	case ('C'):
 		if ('\'' != **start)
 			return(ESCAPE_ERROR);
-		gly = ESCAPE_SPECIAL;
 		*start = ++*end;
+		if ('u' == (*start)[0] && '\'' != (*start)[1])
+			gly = ESCAPE_UNICODE;
+		else
+			gly = ESCAPE_SPECIAL;
 		term = '\'';
 		break;
 
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