Chineseifier

Why?

You will need to install an extension such as Tampermonkey, Greasemonkey or Violentmonkey to install this script.

You will need to install an extension such as Tampermonkey or Violentmonkey to install this script.

You will need to install an extension such as Tampermonkey or Violentmonkey to install this script.

You will need to install an extension such as Tampermonkey or Userscripts to install this script.

You will need to install an extension such as Tampermonkey to install this script.

You will need to install a user script manager extension to install this script.

(I already have a user script manager, let me install it!)

You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

(I already have a user style manager, let me install it!)

// ==UserScript==
// @name         Chineseifier
// @namespace    http://ko-fi.com/
// @version      3.2
// @description  Why?
// @author       leafysweetsgarden (edited by DasLulilaan)
// @include      http://*
// @include      https://*
// @grant        none
// ==/UserScript==

function walk(node)
{
	var ignore = { "STYLE":0, "SCRIPT":0, "NOSCRIPT":0, "IFRAME":0, "OBJECT":0, "PRE":0 };
	// I stole this function from here:
	// http://is.gd/mwZp7E

	var child, next;

if (node.nodeName.toLowerCase() == 'input' || node.nodeName.toLowerCase() == 'textarea' || (node.classList && node.classList.contains('ace_editor'))) { return; }

	if (node.tagName in ignore) return;

	switch ( node.nodeType )
	{
		case 1:  // Element
		case 9:  // Document
		case 11: // Document fragment
			child = node.firstChild;
			while ( child )
			{
				next = child.nextSibling;
				walk(child);
				child = next;
			}
			break;

		case 3: // Text node
			handleText(node);
			break;
	}
}

function handleText(textNode)
{

	var v = textNode.nodeValue;

	v = v.replace(/(?:r)/g, "l");
	v = v.replace(/(?:R)/g, "L");

	textNode.nodeValue = v;
}

// Notify me of everything!
var observerConfig = {
	attributes: true,
	childList: true,
	subtree: true,
	characterData: true
};

var observer = new MutationObserver(function(mutations) {
	observer.disconnect();
	walk(document.body);
	observer.observe(document.body, observerConfig);
});

// Node, config
// In this case we'll listen to all changes to body and child nodes
observer.observe(document.body, observerConfig);