[unsafe-to-break] Mark Indic-like clusters as unsafe-to-break

src/hb-ot-shape-complex-indic.cc

@@ -624,6 +624,8 @@ setup_syllables (const hb_ot_shape_plan_t *plan HB_UNUSED,
 		 hb_buffer_t *buffer)
 {
   find_syllables (buffer);
+  foreach_syllable (buffer, start, end)
+    buffer->unsafe_to_break (start, end);
 }
 
 static int

src/hb-ot-shape-complex-myanmar.cc

@@ -297,6 +297,8 @@ setup_syllables (const hb_ot_shape_plan_t *plan HB_UNUSED,
 		 hb_buffer_t *buffer)
 {
   find_syllables (buffer);
+  foreach_syllable (buffer, start, end)
+    buffer->unsafe_to_break (start, end);
 }
 
 static int

src/hb-ot-shape-complex-use.cc

@@ -354,6 +354,8 @@ setup_syllables (const hb_ot_shape_plan_t *plan,
 		 hb_buffer_t *buffer)
 {
   find_syllables (buffer);
+  foreach_syllable (buffer, start, end)
+    buffer->unsafe_to_break (start, end);
   setup_rphf_mask (plan, buffer);
   setup_topographical_masks (plan, buffer);
 }