Redirect Wikipedia to Wikiwand.
// ==UserScript==
// @name Yet Another Wikipedia 2 Wikiwand
// @version 0.1
// @description Redirect Wikipedia to Wikiwand.
// @namespace https://greasyfork.org/en/users/705158-fy-meng
// @run-at document-start
// @include https://*.wikipedia.*/*
// @include http://*.wikipedia.*/*
// @exclude http://*.wikipedia.org/wiki/*?oldformat=true
// @exclude https://*.wikipedia.org/wiki/*?oldformat=true
// @grant none
// ==/UserScript==
var url = document.URL;
var regex1 = /^https?:\/\/(\w+)\.wikipedia\.org\/wiki\/([^\?#]+)(\?[^#]+)?(#.+)?/;
var regex2 = /^https?:\/\/\w+\.wikipedia\.org\/([\w-]+)\/([^\?#]+)(\?[^#]+)?(#.+)?/;
if (regex1.test(url)) {
window.location.replace(url.replace(regex1, 'https://www.wikiwand.com/$1/$2$4'));
} else if (regex2.test(url)) {
window.location.replace(url.replace(regex2, 'https://www.wikiwand.com/$1/$2$4'));
}