title: XercesLib fail to parse invalid XMML
body: <p>I am using XercesLib c++ library to parse html file.
  In my case html file may have angle brackets inside tag content.</p>
  
  <pre><code>&lt;math&gt;
  &lt;mo&gt; &lt; &lt;mo&gt;
  &lt;/math&gt;
  </code></pre>
  
  <p>Now XercesLib fail to parse the content of mo tag, It gives me empty output, if any tag has non escaped characters.</p>
  
  <p>I can not tell source to provide escaped input file because same file can be parsed by some JavaScript library (MathJAx) without any problem.</p>
  
  <p>How to fix this problem in XercesLib?</p>