1345015.html - mozsearch

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<!DOCTYPE html>

<html>

  <head>

    <script type="application/javascript">

      document.designMode = "on";

      let selection = window.getSelection();

      let foo = document.createElement('foo');

      let div = document.createElement('div');

      document.documentElement.appendChild(foo);

      document.documentElement.appendChild(div);

      foo.outerHTML = '<foo>';

      let range = document.createRange();

      range.selectNode(div);

      selection.addRange(range);

      range.setStart(foo, 0);

      range = document.createRange();

      range.selectNode(document.documentElement);

      selection.addRange(range);

      document.execCommand('insertparagraph', false, null);

    </script>

  </head>

  <body>

  </body>

</html>