rem: return uri && (pm.testPermission(uri, "firebug") == ALLOW_ACTION || (uri.scheme == "file" && !this.disabledFile)); 
add: if (!uri) return false; var url  =  uri.spec ? uri.spec : uri; if (FBL.isLocalURL(url) && !this.disabledFile) return true; if (isSystemURL(url) && Firebug.allowSystemPages) return true; if (uri.spec) { if (pm.testPermission(uri, "firebug") == ALLOW_ACTION) return true; } return false; 
context:     isURIAllowed: function(uri)    {        return uri &&            (pm.testPermission(uri, "firebug") == ALLOW_ACTION                || (uri.scheme == "file" && !this.disabledFile));    },
meta: 7450	/local1/tlutelli/issta_data/temp/all_js/javascript/2007_temp/2007/7450/fd3fa7073b03b34b49adc8add0f84b5b4e33907f/firebug.js/clean/extension/content/firebug/firebug.js