foreman_redmine_issue_links.user.js

// ==UserScript==
// @name        Foreman redmine issue links at GitHub
// @namespace   https://github.com/
// @include     https://*github.com/*
// @require     http://ajax.googleapis.com/ajax/libs/jquery/1.9.1/jquery.min.js
// @version     1.2
// @grant       none
// ==/UserScript==

(function($) {

  function replace_issue_links(text) {
    return text
      .replace(/#([0-9]{4,6})/g, '<a style="color: #4183C4;" href="http://projects.theforeman.org/issues/$1/">#$1</a>')
      .replace(/BZ([0-9]{7,8})/g, '<a style="color: #4183C4;" href="https://bugzilla.redhat.com/show_bug.cgi?id=$1">BZ$1</a>');
  }

  function replace_issue_links_for(selector) {
    $(selector).each(function(){
      $(this).html(replace_issue_links($(this).text()));
    });
  }

  function monkey_github_page() {
    replace_issue_links_for('.gh-header-title .js-issue-title');
    replace_issue_links_for('.commit-title');
  }
 
  $(document).ready(monkey_github_page);
  $(window).bind('pjax:end', monkey_github_page);

})(jQuery);