gist.user.js with fixed script URL

gist_link_user_js.user.js

// ==UserScript==
// @name           gist.user.js
// @namespace      http://github.com/hotchpotch
// @description    install greasemonkey (user.js)
// @include        http://gist.github.com/*
// @include        https://gist.github.com/*
// @require        http://gist.github.com/3242.txt
// ==/UserScript==

(function() {
  if(!location.href.match(/gist\.github\.com\/\d+\/?$/))
    return;

  $X('id("files")//div[@class="info"]/span').forEach(function(e) {
    var filename = e.innerHTML;
    if (/\.user\.js$/.test(filename)) {
      var el = document.createElement('a');
      el.href = location.href.replace(/\/?$/, '') + '.txt?' + filename;
      el.innerHTML = filename;
      e.parentNode.replaceChild(el,e);
    }
  });
})();