Roll harfbuzz-ng to 1.0.5

third_party/harfbuzz-ng/src/hb-ot-shape-complex-use.cc

 /*
  * Copyright © 2015  Mozilla Foundation.
  * Copyright © 2015  Google, Inc.
  *
  *  This is part of HarfBuzz, a text shaping library.
  *
  * Permission is hereby granted, without written agreement and without
  * license or royalty fees, to use, copy, modify, and distribute this
  * software and its documentation for any purpose, provided that the
  * above copyright notice and the following two paragraphs appear in
@@ skipping 418 matching lines @@
     /* Got a repha.  Reorder it to after first base, before first halant. */
     for (unsigned int i = start + 1; i < end; i++)
       if (FLAG_UNSAFE (info[i].use_category()) & (HALANT_FLAGS | BASE_FLAGS))
       {
         /* If we hit a halant, move before it; otherwise it's a base: move to it's
          * place, and shift things in between backward. */
 
         if (info[i].use_category() == USE_H)
           i--;
 
+        buffer->merge_clusters (start, i + 1);
         hb_glyph_info_t t = info[start];
         memmove (&info[start], &info[start + 1], (i - start) * sizeof (info[0]));
         info[i] = t;
-        buffer->merge_clusters (start, i + 1);
 
         break;
       }
   }
 
   /* Move things back. */
   unsigned int j = end;
   for (unsigned int i = start; i < end; i++)
   {
     uint32_t flag = FLAG_UNSAFE (info[i].use_category());
     if (flag & (HALANT_FLAGS | BASE_FLAGS))
     {
       /* If we hit a halant, move before it; otherwise it's a base: move to it's
        * place, and shift things in between backward. */
       if (info[i].use_category() == USE_H)
         j = i + 1;
       else
         j = i;
     }
     else if (((flag) & (FLAG (USE_VPre) | FLAG (USE_VMPre))) &&
              /* Only move the first component of a MultipleSubst. */
              0 == _hb_glyph_info_get_lig_comp (&info[i]) &&
              j < i)
     {
+      buffer->merge_clusters (j, i + 1);
       hb_glyph_info_t t = info[i];
       memmove (&info[j + 1], &info[j], (i - j) * sizeof (info[0]));
       info[j] = t;
-      buffer->merge_clusters (j, i + 1);
     }
   }
 }
 
 static inline void
 insert_dotted_circles (const hb_ot_shape_plan_t *plan HB_UNUSED,
                        hb_font_t *font,
                        hb_buffer_t *buffer)
 {
   /* Note: This loop is extra overhead, but should not be measurable. */
@@ skipping 95 matching lines @@
   data_create_use,
   data_destroy_use,
   NULL, /* preprocess_text */
   HB_OT_SHAPE_NORMALIZATION_MODE_COMPOSED_DIACRITICS_NO_SHORT_CIRCUIT,
   NULL, /* decompose */
   compose_use,
   setup_masks_use,
   HB_OT_SHAPE_ZERO_WIDTH_MARKS_NONE,
   false, /* fallback_position */
 };