th a lot of potential fold points. If your lexer is exhibiting
    signs of slowness, try disabling folding in your text editor first. If that
    speeds things up, you can try reducing the number of fold points you added,
    overriding <code>lexer.fold()</code> with your own implementation, or simply eliminating
    folding support from your lexer.</p>

    <p><a id="lexer.Limitations"></a></p>

    <h4>Limitations</h4>

    <p>Embedded preprocessor languages like PHP cannot completely embed in their
    