[buffer] Overlay segment-properties in hb_buffer_append()

Part of harfbuzz#1555
matthiasclasen · Jan 7, 2022 · 55ebe0b · 55ebe0b
1 parent 4a3468f
commit 55ebe0b
Showing 1 changed file with 2 additions and 0 deletions.
diff --git a/src/hb-buffer.cc b/src/hb-buffer.cc
@@ -1788,6 +1788,8 @@ hb_buffer_append (hb_buffer_t *buffer,
   if (!buffer->have_positions && source->have_positions)
     buffer->clear_positions ();
 
+  hb_segment_properties_overlay (&buffer->props, &source->props);
+
   memcpy (buffer->info + orig_len, source->info + start, (end - start) * sizeof (buffer->info[0]));
   if (buffer->have_positions)
     memcpy (buffer->pos + orig_len, source->pos + start, (end - start) * sizeof (buffer->pos[0]));