core.html.normalize
#item input.html
<!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8">
</head>
<body>
  <p>
    <span id="word1">one</span>
    <span id="word2"><span class="uxwrite-foo"></span>a</span>
    <span id="word3">two</span>
  </p>
</body>
</html>
#item expected
<!DOCTYPE html>
<html>
  <head>
    <meta charset="utf-8"/>
  </head>
  <body>
    <p>
      <span id="word1">one </span><span id="word2"><span class="uxwrite-foo"></span></span><span id="word3">a two</span>
    </p>
  </body>
</html>