anchor.diff:    return pageAsInt;
   }
   
  +logPubHeaders(shelf.Request request) {
  +  request.headers.forEach((String key, String value) {
  +    final lowerCaseKey = key.toLowerCase();
  +    if (lowerCaseKey.startsWith('x-pub')) {
  +      _pubHeaderLogger.info('$key: $value');
  +    }
  +  });
  +}
  +
   class StaticsCache {
     final Map<String, StaticFile> staticFiles = <String, StaticFile>{};
   
  
positive.code: final String StaticsLocation = Platform.script.resolve('../../static').toFilePath();
  
  Logger _logger = new Logger('pub.handlers');
  
  /// Handler for the whole URL space of pub.dartlang.org
  ///
  
negative.code: ///   - /api/*
  Future<shelf.Response> appHandler(
      shelf.Request request, shelf.Handler shelfPubApi) async {
    final path = request.requestedUri.path;
  
    logPubHeaders(request);
  
    var handler = {
      '/': indexHandler,
  