rem: return (scheme == "http" || scheme == "https" || scheme == "file") && !/hiddenWindow\.html$/.test(url); 
add: return (scheme == "http" || scheme == "https" || scheme == "file" || url.match(/^about:cache/)) && !/hiddenWindow\.html$/.test(url); 
context: function GM_isGreasemonkeyable(url) {  var scheme = Components.classes["@mozilla.org/network/io-service;1"]               .getService(Components.interfaces.nsIIOService)               .extractScheme(url);  return (scheme == "http" || scheme == "https" || scheme == "file") &&         !/hiddenWindow\.html$/.test(url);}
meta: 4585	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/4585/95749ee4f608f61e2ec32b4d5add0c8e0c28f158/utils.js/buggy/src/chrome/chromeFiles/content/utils.js