docs: function findSourceInUrls(re, urls) {
          var source, m;
          for (var i = 0, j = urls.length; i < j; ++i) {
              if ((source = getSource(urls[i])).length) {
                  source = source.join('\n');
                  if ((m = re.exec(source))) {
  
                      return {
                          'url': urls[i],
                          'line': source.substring(0, m.index).split('\n').length,
                          'column': m.index - source.lastIndexOf('\n', m.index) - 1
                      };
                  }
              }
          }
  
          return null;
      }