title: Turn off built-in rss reader in Firefox 13
body: <p>A couple of years ago, I designed a bunch of automatic tests for a webapplication using <a href="https://www.molyb.org/confluence/display/molyb/Home" rel="nofollow">Molybdenum</a>. Some of these checked the data showed in a rss feed through an xml parser. The test required the browser to show the rss as a simple xml file.</p>
  
  <p>At that time I managed to turn off firefox built-in rss reader <a href="http://www.walkernews.net/2007/11/20/how-to-view-rss-feed-in-xml-format-with-firefox/" rel="nofollow">changing a parameter in the feedconverter.js file</a>. With the major updates in Firefox (4.0 to now) this file is missing and the developers seems to have left no room for this kind of trick.</p>
  
  <p>Do you know a native way to turn off the built-in rss reader?</p>
  
  <p>P.S. = Solutions using the <em>view-source:</em> URL suffix does not work in this case, because the <em>open</em> command answers <strong>Failure: Access to restricted URI denied</strong></p>