<!DOCTYPE html>
<html>
  <head>
  <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
  <title>Test - word-wrap: break-word should respect clusters</title>
  </head>
  <body>
    <div style="width:0px; word-wrap:break-word">
      abc
      d&#x0325;e&#x0315;f&#x0323;
      &#x10400;&#x10401;&#x10402;
    </div>
  </body>
</html>