[buffer] Save pre/post textual context
To be used for a variety of purposes. We save up to five characters
in each direction. No public API changes, everything is taken care
of already. All clients need to do is to call hb_buffer_add_utf* with
the full text + segment info (or at least some context) instead of
just passing in the segment.
Various operations (hb_buffer_reset, hb_buffer_set_length,
hb_buffer_add*) automatically reset the relevant contexts.
diff --git a/src/hb-buffer.h b/src/hb-buffer.h
index d89dce3..dc63d1b 100644
--- a/src/hb-buffer.h
+++ b/src/hb-buffer.h
@@ -1,7 +1,7 @@
/*
* Copyright © 1998-2004 David Turner and Werner Lemberg
* Copyright © 2004,2007,2009 Red Hat, Inc.
- * Copyright © 2011 Google, Inc.
+ * Copyright © 2011,2012 Google, Inc.
*
* This is part of HarfBuzz, a text shaping library.
*
