[unicode7] Mark right-to-left scripts
diff --git a/src/hb-common.cc b/src/hb-common.cc
index afaecce..33d2e55 100644
--- a/src/hb-common.cc
+++ b/src/hb-common.cc
@@ -484,6 +484,14 @@
     case HB_SCRIPT_MEROITIC_CURSIVE:
     case HB_SCRIPT_MEROITIC_HIEROGLYPHS:
 
+    /* Unicode-7.0 additions */
+    case HB_SCRIPT_MANICHAEAN:
+    case HB_SCRIPT_MENDE_KIKAKUI:
+    case HB_SCRIPT_NABATAEAN:
+    case HB_SCRIPT_OLD_NORTH_ARABIAN:
+    case HB_SCRIPT_PALMYRENE:
+    case HB_SCRIPT_PSALTER_PAHLAVI:
+
       return HB_DIRECTION_RTL;
   }