title: regex match urls NOT containing given set of strings
body: <p>I need to match all urls that DO NOT contain either <code>/admin/</code> or <code>?page=</code>.</p>
  
  <p>I'll be using this as a redirect rule in an iirf.ini file (supports htaccess syntax). </p>
  
  <p>How can I accomplish this?</p>