anchor.diff:  bool machineFormat;
   bool overwriteFileContents;
   Selection selection;
  -const followLinks = false;
  +final List<String> paths = [];
  +
  +const FOLLOW_LINKS = false;
   
   
   main(args) {
  
positive.code:   if (options.rest.isEmpty) {
      _formatStdin(kind);
    } else {
      _formatPaths(options.rest);
    }
  }
  
  
negative.code:     }
    }
  }
  
  _isPatchFile(file) => file.path.endsWith('_patch.dart');
  
  _isDartFile(file) => dartFileRegExp.hasMatch(path.basename(file.path));
  
  