anchor.diff:              input = toString(input);
               truncateString = toString(truncateString);
               if (input == null) {
  -                return;
  +                return '';
               }
               if (!input.slice) {
  -                return;
  +                return '';
               }
               length = toNumber(length);
               l = length - truncateString.length;
  
positive.code:             path = parts.slice( 0, parts.length-1) +'/_'+parts[ parts.length-1 ];
          else
              path = '_' + parts[ parts.length-1 ];
          namespace.Render( path, data )
      }
  
      namespace._FNS = {
          html: function (html) {
  
negative.code: 
      var toString = function(input) {
          if (!input) {
              return '';
          }
          if (_.isString(input)) {
              return input;
  