mozilla-release/layout/reftests/text/zwnj-02.xhtml

<?xml version="1.0" encoding="UTF-8"?>
<svg xmlns="http://www.w3.org/2000/svg"
     xmlns:xlink="http://www.w3.org/1999/xlink"
     version="1.1">

  <!-- use an empty g to force filters.svg to load before onload -->
  <use xlink:href="../filters.svg#empty" />

  <foreignObject filter="url(../filters.svg#NonWhiteToBlack)"
                 x="0" y="0" height="100%" width="100%">
<html xmlns="http://www.w3.org/1999/xhtml">
<!-- ZWNJ test #2. The words from zwnj-01.html with the ZWNJs replaced by
 span boundaries. Correct behaviour is for the letters to connect across the
 spans -->
 <head>
  <title>ZWNJ test</title>
  <style type="text/css">
  html, body { margin: 0; background: white; color: black; height: 100%; width: 100%; }
  body {   
    font-size: 36px;
  }
  </style>
 </head>
 <body lang="ar">
  <p><span>&#x647;&#x641;&#x62A;&#x647;</span><span>&#x647;&#x627;</span></p>
  <p><span>&#x645;&#x648;&#x632;&#x647;</span><span>&#x647;&#x627;</span></p>
  <p><span>&#x633;&#x647;</span><span>&#x634;&#x646;&#x628;&#x647;</span></p>
  <p><span>&#x631;&#x627;&#x647;</span><span>&#x622;&#x647;&#x646;</span></p>
  <p><span>&#x646;&#x631;&#x645;</span><span>&#x627;&#x641;&#x632;&#x627;&#x631;</span></p>
 </body>
</html>
</foreignObject>
</svg>