In -Tascii mode, provide approximations even for some Unicode escape

sequences above codepoint 512 by doing a reverse lookup in the
existing mandoc_char(7) character table.

Again, groff isn't smart enough to do this and silently discards such
escape sequences without printing anything.

1 files changed, 12 insertions, 1 deletions

diff --git a/chars.c b/chars.c
index a7b34b21..31d75a6e 100644
--- a/chars.c
+++ b/chars.c
@@ -1,4 +1,4 @@
-/*	$Id: chars.c,v 1.60 2014/10/26 17:12:03 schwarze Exp $ */
+/*	$Id: chars.c,v 1.61 2014/10/26 18:07:28 schwarze Exp $ */
 /*
  * Copyright (c) 2009, 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv>
  * Copyright (c) 2011, 2014 Ingo Schwarze <schwarze@openbsd.org>
@@ -149,6 +149,17 @@ mchars_spec2str(const struct mchars *arg,
 	return(ln->ascii);
 }
 
+const char *
+mchars_uc2str(int uc)
+{
+	int	 i;
+
+	for (i = 0; i < LINES_MAX; i++)
+		if (uc == lines[i].unicode)
+			return(lines[i].ascii);
+	return("<?>");
+}
+
 static const struct ln *
 find(const struct mchars *tab, const char *p, size_t sz)
 {