From bdc8215949a7add742cc800b4fdea6acaa37d152 Mon Sep 17 00:00:00 2001
From: Behdad Esfahbod <behdad@behdad.org>
Date: Tue, 1 Sep 2015 16:24:54 +0100
Subject: [PATCH] [thai] Respect cluster-level > 0

---
 src/hb-ot-shape-complex-thai.cc | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/hb-ot-shape-complex-thai.cc b/src/hb-ot-shape-complex-thai.cc
index feb7fc7..d4ede20 100644
--- a/src/hb-ot-shape-complex-thai.cc
+++ b/src/hb-ot-shape-complex-thai.cc
@@ -353,7 +353,7 @@ preprocess_text_thai (const hb_ot_shape_plan_t *plan,
     {
       /* Since we decomposed, and NIKHAHIT is combining, merge clusters with the
        * previous cluster. */
-      if (start)
+      if (start && buffer->cluster_level == HB_BUFFER_CLUSTER_LEVEL_MONOTONE_GRAPHEMES)
 	buffer->merge_out_clusters (start - 1, end);
     }
   }
-- 
2.7.4