anchor.diff:        });
     };
   
  -  if (!USE_OVERLAYS) {
  -    f.writeAsStringSync(src, flush: true);
  -    io.sleep(new Duration(milliseconds: 1000));
  -    return continuation(null);
  -  } else {
  -    var ret = sendAddOverlay(path, src).then(continuation);
  -    isSettingUp = false;
  -    return ret;
  -
  -  }
  -}
  -
  -completeSyncy(String src, int offset) async => _complete(src, i);
  +  var ret = sendAddOverlay(path, src).then(continuation);
  +  isSettingUp = false;
  +  return ret;
  +
  +}
  +
  +completeSyncy(String src, int offset) async => _complete(src, offset);
   
   procResults(List results) {
     return results.map((r) => r['completion']);
  
positive.code: // GAE configurations.
  String PACKAGE_ROOT = '/app/packages';
  String SDK = '/usr/lib/dart';
  
  bool USE_OVERLAYS = true;
  
  final Server server = new Server();
  
negative.code: 
   */
  
      List<String> arguments = [];
  
      //arguments.add ('--port=8181');
      //arguments.add ("8181");
  
      if (NEEDS_ENABLE_ASYNC) arguments.add('--enable-async');
      arguments.add('-p$PACKAGE_ROOT');
      //arguments.add('--enable-vm-service=8183');
      //arguments.add('--profile');
  