Fix TinyMCE: Fixes TinyMCE's `setRng` function by replacing it with the fixed one.

Fix TinyMCE 1.01.js

// ==UserScript==
// @name Fix TinyMCE
// @version 1.01
// @description Fixes TinyMCE's `setRng` function by replacing it with the fixed one.
// @author XP1 (https://github.com/XP1/)
// @namespace https://gist.github.com/1578084/
// @include http*://hp.com/*
// @include http*://*.hp.com/*
// ==/UserScript==

/*jslint browser: true, vars: true, white: true, maxerr: 50, indent: 4 */
(function (console, window)
{
    "use strict";

    var userScript = {
        name: "Fix TinyMCE"
    };

    function removeEventListenerAfterFiring(numberOfTimes, callback)
    {
        var remaining = numberOfTimes;
        return function listener(event)
        {
            remaining -= 1;

            if (remaining <= 0)
            {
                var target = event.target;
                var type = event.type;
                target.removeEventListener(type, listener, false);
                target.removeEventListener(type, listener, true);
            }

            callback();
        };
    }

    var handleException = function handleException(theFunction)
    {
        try
        {
            theFunction();
        }
        catch (exception)
        {
            console.error("[" + userScript.name + "]: Exception: " + exception + "\n\nStack:\n" + exception.stack + "\n\nStacktrace:\n" + exception.stacktrace);
        }
    };

    // Jason Frame's bug fix, on November 08, 2011:
    // Fix exception in setRng for webkit browser where adding range isn't successful and causes an exception setting the selected range:
    // https://github.com/tinymce/tinymce/blob/347623591030c58bd06fd60c597dac93372d1921/jscripts/tiny_mce/classes/dom/Selection.js
    /**
     * Changes the selection to the specified DOM range.
     *
     * @method setRng
     * @param {Range} r Range to select.
     */
    var fixedSetRng = function fixedSetRng(r)
    {
        var s, t = this;

        if (!t.tridentSel)
        {
            s = t.getSel();

            if (s)
            {
                t.explicitRange = r;

                try
                {
                    s.removeAllRanges();
                }
                catch (ex0)
                {
                    // IE9 might throw errors here don't know why
                }

                s.addRange(r);
                // adding range isn't always successful so we need to check range count otherwise an exception can occur
                t.selectedRange = s.rangeCount > 0 ? s.getRangeAt(0) : null;
            }
        }
        else
        {
            // Is W3C Range
            if (r.cloneRange)
            {
                t.tridentSel.addRange(r);
                return;
            }

            // Is IE specific range
            try
            {
                r.select();
            }
            catch (ex1)
            {
                // Needed for some odd IE bug #1843306
            }
        }
    };

    function fixSetRng()
    {
        var SelectionPrototype = window.tinymce.dom.Selection.prototype;
        var setRng = SelectionPrototype.setRng;

        // Check for the presence of Jason Frame's bug fix, on November 08, 2011.
        if (typeof setRng === "function" && setRng.toString().indexOf("rangeCount") === -1)
        {
            SelectionPrototype.setRng = fixedSetRng;
            console.log("[" + userScript.name + "]: Replaced the \"setRng\" function with the fixed \"setRng\" function.");
        }
    }

    function initialize()
    {
        var functions = [fixSetRng];

        var i = null;
        var length = functions.length;
        for (i = 0; i < length; i += 1)
        {
            handleException(functions[i]);
        }
    }

    window.addEventListener("DOMContentLoaded", removeEventListenerAfterFiring(1, initialize), false);
}(this.console, this));