From 57db2b7e4459d4d47830a79c7403c0230202c223 Mon Sep 17 00:00:00 2001
From: Werner Lemberg <wl@gnu.org>
Date: Mon, 27 Jul 2015 07:09:48 +0200
Subject: [PATCH] Introduce list of used features in `feature_tags'.

---
 lib/Makefile.am  |  1 +
 lib/tafeature.c  | 33 +++++++++++++++++++++++++++++++++
 lib/taharfbuzz.h |  5 +++++
 3 files changed, 39 insertions(+)
 create mode 100644 lib/tafeature.c

diff --git a/lib/Makefile.am b/lib/Makefile.am
index 3006d17..7bf79b4 100644
--- a/lib/Makefile.am
+++ b/lib/Makefile.am
@@ -46,6 +46,7 @@ libttfautohint_la_SOURCES = \
   tadummy.c tadummy.h \
   tadump.c \
   taerror.c \
+  tafeature.c \
   tafile.c \
   tafont.c \
   tafpgm.c \
diff --git a/lib/tafeature.c b/lib/tafeature.c
new file mode 100644
index 0000000..c5c6553
--- /dev/null
+++ b/lib/tafeature.c
@@ -0,0 +1,33 @@
+/* tafeature.c */
+
+/*
+ * Copyright (C) 2015 by Werner Lemberg.
+ *
+ * This file is part of the ttfautohint library, and may only be used,
+ * modified, and distributed under the terms given in `COPYING'.  By
+ * continuing to use, modify, or distribute this file you indicate that you
+ * have read `COPYING' and understand and accept it fully.
+ *
+ * The file `COPYING' mentioned in the previous paragraph is distributed
+ * with the ttfautohint library.
+ */
+
+#include "taharfbuzz.h"
+
+
+#undef COVERAGE
+#define COVERAGE(name, NAME, description, \
+                 tag1, tag2, tag3, tag4) \
+                   HB_TAG(tag1, tag2, tag3, tag4),
+
+const hb_tag_t feature_tags[] =
+{
+
+#include <tacover.h>
+
+  HB_TAG('d', 'f', 'l', 't')
+};
+
+size_t feature_tags_size = sizeof (feature_tags) / sizeof (feature_tags[0]);
+
+/* end of tafeature.c */
diff --git a/lib/taharfbuzz.h b/lib/taharfbuzz.h
index d1bc879..ae5d75e 100644
--- a/lib/taharfbuzz.h
+++ b/lib/taharfbuzz.h
@@ -31,6 +31,11 @@
 #include "ta.h"
 
 
+/* in file `tafeature.c' */
+extern const hb_tag_t feature_tags[];
+extern size_t feature_tags_size;
+
+
 FT_Error
 ta_get_coverage(TA_FaceGlobals globals,
                 TA_StyleClass style_class,
-- 
2.11.4.GIT