===================================================================
RCS file: /cvs/mandoc/chars.c,v
retrieving revision 1.41
retrieving revision 1.42
diff -u -p -r1.41 -r1.42
--- mandoc/chars.c	2011/05/14 17:54:42	1.41
+++ mandoc/chars.c	2011/05/15 15:47:46	1.42
@@ -1,4 +1,4 @@
-/*	$Id: chars.c,v 1.41 2011/05/14 17:54:42 kristaps Exp $ */
+/*	$Id: chars.c,v 1.42 2011/05/15 15:47:46 kristaps Exp $ */
 /*
  * Copyright (c) 2009, 2010 Kristaps Dzonsons <kristaps@bsd.lv>
  * Copyright (c) 2011 Ingo Schwarze <schwarze@openbsd.org>
@@ -141,6 +141,7 @@ mchars_res2cp(struct mchars *arg, const char *p, size_
  * This can only be a printable character (i.e., alnum, punct, space) so
  * prevent the character from ruining our state (backspace, newline, and
  * so on).
+ * If the character is illegal, returns '\0'.
  */
 char
 mchars_num2char(const char *p, size_t sz)