anchor.diff:     */
     CommandLineOptions._fromArgs(ArgResults args)
       : shouldBatch = args['batch'],
  -      machineFormat = args['machine-format'],
  +      machineFormat = args['machine'],
  +      displayVersion = args['version'],
         ignoreUnrecognizedFlags = args['ignore-unrecognized-flags'],
         showPackageWarnings = args['show-package-warnings'],
         showSdkWarnings = args['show-sdk-warnings'],
  
positive.code:   static _showUsage(parser) {
      print('Usage: $_BINARY_NAME [options...] <libraries to analyze...>');
      print(parser.getUsage());
    }
  
  }
  
  /**
  
negative.code:           _showUsage(parser);
            exit(15);
          }
        } if (results['version']) {
          print('$_BINARY_NAME version ${_getVersion()}');
          exit(0);
        } else {
          if (results.rest.length == 0) {
            _showUsage(parser);
  