am fe811d8b: Merge change 6603 into donut

Merge commit 'fe811d8bd0da15f14702968a9c7deb02db7eec9f'

* commit 'fe811d8bd0da15f14702968a9c7deb02db7eec9f':
  quick fix; utf8_codepoint_count must be utf8_length