anchor.diff:          valueHelp: 'NAME',
           help: 'Output style.',
           allowed: ['expanded', 'compressed'],
  -        defaultsTo: 'expanded')
  +        defaultsTo: 'expanded');
  +
  +  argParser
  +    ..addSeparator(_separator('Other'))
       ..addFlag('color', abbr: 'c', help: 'Whether to emit terminal colors.')
       ..addFlag('quiet', abbr: 'q', help: "Don't print warnings.")
       ..addFlag('trace', help: 'Print full Dart stack traces for exceptions.')
  
positive.code:   }
  }
  
  /// Print the usage information for Sass, with [message] as a header.
  void _printUsage(ArgParser parser, String message) {
    print("$message\n");
  
negative.code: import 'io.dart';
  import 'util/path.dart';
  
  /// The bar character to use in help separators.
  final _separatorBar = isWindows ? '=' : '━';
  
  /// The total length of help separators, including text.
  final _separatorLength = 40;
  
  main(List<String> args) async {
    var argParser = new ArgParser(allowTrailingOptions: true)
      ..addOption('precision', hide: true);
  
    argParser
      ..addSeparator(_separator('Input and Output'))
      ..addFlag('stdin', help: 'Read the stylesheet from stdin.')
      ..addFlag('indented', help: 'Use the indented syntax for input from stdin.')
      ..addMultiOption('load-path',
  