// ==UserScript==
// @name          Greasyfork in your language
// @author        wOxxOm
// @description   Whenever a link to localized greasyfork page is clicked, redirect it to the specified language
// @namespace     wOxxOm.scripts
// @version       1.0
// @include       *
// @grant         none
// @downloadURL none
// ==/UserScript==

var language = 'en';

window.addEventListener('click', function(e) {
  var a = e.target;

  //search the parent A element if needed
  for (; a.localName != 'a'; a = a.parentNode)
    if (!a.parentNode)
      return;

  if (a.href.indexOf('greasyfork.org/')>=0 && (m = a.href.match(/^(.*?greasyfork\.org\/)(\w\w(?:-\w\w)?)(\/.*)$/i))) {
    a.href = m[1] + language + m[3];
    console.log('Redirected greasyfork url from '+m[2]+' to '+language);
  }
});