nger in core</h2>

<p>The <a href="manual.html#addon_matchbrackets"><code>matchBrackets</code></a>
option is no longer defined in the core editor.
Load <code>addon/edit/matchbrackets.js</code> to enable it.</p>
</section>
<section id=modes>
  <h2>Mode management</h2>

<p>The <code>CodeMirror.listModes</code>
and <code>CodeMirror.listMIMEs</code> functions, used for listing
defined modes, are gone. You are now encouraged to simply
inspect <code>CodeMirror.modes</code> (mapping mode names to mode
constructors