anchor.diff:  
     if ($('#editor').isPresent()) {
         if (isBrowserSupported()) {
  +          initializeRegexes();
             initializeCodePilot();
             $('.score, #development-environment').show();
             configureEditors();
  
positive.code:     $('#download').on('click', downloadCode);
      $('#request-for-comments').on('click', requestComments);
    };
  
    var initializeTooltips = function() {
      $('[data-tooltip]').tooltip();
  
negative.code: 
        // set regex for parsing error traces based on the mode of the main file.
        if( $(element).parent().data('role') == "main_file"){
          tracepositions_regex = regex_for_language.get($(element).data('mode'));
        }
  
        var file_id =  $(element).data('id');
  