gistfile1.txt

  // Apply path matching
      var path = d.location.pathname,
          refMatch = document.referrer.match(/.{8}[^/]*(\/[^?]+)/),
          ref = refMatch ? refMatch[1] : null,
          isPathMatch = function(pattern) {
            var p = new RegExp((pattern[0] == "/" ? "^" : "") + pattern, "i");
            return p.test(path);
          },
          toArray = function(v){ return _.isArray(v) ? v : [v] };
      if (criteria.path && !_.any(toArray(criteria.path), isPathMatch)) {
        return;
      }
      if (criteria.not_path && _.any(toArray(criteria.not_path), isPathMatch)) {
        return;
      }
      path = ref;