commit 1feb8345a5fd92297eb6796e6dce633bafa0c76e
author Behdad Esfahbod <behdad@behdad.org> Mon Jul 16 13:23:40 2012 -0400
committer Behdad Esfahbod <behdad@behdad.org> Mon Jul 16 13:23:40 2012 -0400
tree 5a96e2acf2e012293cd2adf21643868d48de312a
parent 29f106d7fba25e1464debd3a4831a7380d75c4c9

[GSUB] Allow 1-to-1 ligature substitutions!

Apparently Uniscribe allows these, and they are used in some Khmer fonts
shipped with Windows, namely, Daun Penh.

src/hb-ot-layout-gsub-table.hh

diff --git a/src/hb-ot-layout-gsub-table.hh b/src/hb-ot-layout-gsub-table.hh
index f5f38cc..8a0bc3c 100644
--- a/src/hb-ot-layout-gsub-table.hh
+++ b/src/hb-ot-layout-gsub-table.hh
@@ -480,7 +480,7 @@
   {
     TRACE_APPLY ();
     unsigned int count = component.len;
-    if (unlikely (count < 2)) return TRACE_RETURN (false);
+    if (unlikely (count < 1)) return TRACE_RETURN (false);
 
     hb_apply_context_t::mark_skipping_forward_iterator_t skippy_iter (c, c->buffer->idx, count - 1);
     if (skippy_iter.has_no_chance ()) return TRACE_RETURN (false);