Infocatcher

var uris = {
	"http://example.com/": true,
	"https://example.com/": true,
	"https://example.com/foo/bar.php?key=val&key2=val2#hash": true,
	"file:///": true,
	"ftp://example.com": true,
	//"about:": true, // Removed in new versions
	"about:newtab": true,
	"about:config": true,
	"about:cache?device=memory": true,

Infocatcher

// Turn off extensions signatures in Firefox
// Use at your own risk!

// Usage:
// Start browser with rights to write into his install directory (run as administrator)
// devtools.chrome.enabled = true (in about:config)
// Open Scratchpad: Shift+F4 (Tools - Web-Developer - Scratchpad)
// Set: Environment - Browser
// Then paste following code and press Run, browser will be restarted, than enjoy

Infocatcher

function getDownloadHistory() {
	var query = PlacesUtils.history.getNewQuery();
	query.setTransitions([Components.interfaces.nsINavHistoryService.TRANSITION_DOWNLOAD], 1);
	var options = PlacesUtils.history.getNewQueryOptions();
	options.resultType = options.RESULTS_AS_URI;
	options.queryType = Components.interfaces.nsINavHistoryQueryOptions.QUERY_TYPE_HISTORY;
	options.includeHidden = true;

	var result = PlacesUtils.history.executeQuery(query, options);
	var contents = result.root;

Infocatcher

function getVKChar(vk) {
	// Firefox doesn't have string representation for some codes...
	// https://developer.mozilla.org/en-US/docs/DOM/KeyboardEvent#Virtual_key_codes
	if(/^VK_(?:NUMPAD)?([\d+A-Z])$/.test(vk))
		return RegExp.$1;
	switch(vk) {
		case "VK_SPACE":               return " "; //32
		case "VK_COLON":               return ":"; //58
		case "VK_SEMICOLON":           return ";"; //59
		case "VK_LESS_THAN":           return "<"; //60

Infocatcher

// ==UserScript==
// @name        about:blank?UserScripts/test
// @namespace   dev/null
// @include     about:blank?UserScripts/test
// @run-at      document-start
// @version     1
// @grant       none
// ==/UserScript==

console.log("test: " + document.readyState);

Infocatcher

// https://gist.github.com/Infocatcher/2d001a8c72eb278c3686
// Based on code from Custom Buttons extension
// https://addons.mozilla.org/files/browse/261190/file/components/CustomButtonsService.js#L210

function ImageConverter(imageURL, feedback) {
	this.imageURL = imageURL;
	this.feedback = feedback;
	this.bytes = [];
	this.channel = Services.io.newChannel(imageURL, null, null);
	this.channel.notificationCallbacks = this;

Infocatcher

<?xml version="1.0" encoding="UTF-8"?>

<bindings xmlns="http://www.mozilla.org/xbl"
          xmlns:html="http://www.w3.org/1999/xhtml"
          xmlns:xul="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul"
          xmlns:xbl="http://www.mozilla.org/xbl">

  <binding id="urlbar" extends="chrome://browser/content/urlbarBindings.xml#urlbar">
    <content sizetopopup="pref">
      <xul:hbox class="autocomplete-textbox-container urlbar-textbox-container" flex="1">

Infocatcher

// Windows watcher, based on code from
// https://github.com/Infocatcher/Custom_Buttons/tree/master/CB_Editor_Toggle_on_Top

const watcherId = "customButtonsWindowsWatcher_" + this.id;
var {Application, Components} = window; // Prevent garbage collection in Firefox 3.6 and older
var watcher = Application.storage.get(watcherId, null);
if(!watcher) {
	watcher = {
		REASON_STARTUP: 1,
		REASON_SHUTDOWN: 2,

Infocatcher

// Based on code from TabLang extension: https://addons.mozilla.org/addon/tablang/
// and Master Password+ extension https://addons.mozilla.org/addon/master-password/

var kb = {
	GetKeyboardLayout: null,
	GetLocaleInfoW: null,
	init: function()
	{
		this.init = function() {};
		Components.utils.import("resource://gre/modules/ctypes.jsm", this);

Infocatcher

var textZoom = 1.5;
var fullZoom = 1;
var scrollX = 0;
var scrollY = 200;

var tab = gBrowser.addTab("https://addons.mozilla.org/");
var browser = tab.linkedBrowser;

if(scrollX || scrollY) {
	var scrollTimer = setInterval(function() {