Switches to en-US when loading Microsoft documents from another language

PreferEnglishOnMicrosoft.user.js

// ==UserScript==
// @name         Prefer English on Microsoft
// @namespace    https://gist.github.com/fujieda/bc86460d04c7256658c9fa2d99b55d2f/raw
// @description  Switches to en-US when loading Microsoft documents from another language
// @include      https://learn.microsoft.com/*
// ==/UserScript==

var pattern = /(.*microsoft.com)\/([a-z]{2}-[a-z]{2})\/(.*)/i;
var replacement = "$1/en-us/$3";

var oldurl = window.location.href;
var newurl = oldurl.replace(pattern, replacement);

if (newurl != oldurl)
{
    window.stop();
    window.location.assign(newurl);
}