anchor.diff:  ];
   
   main(args) => runIsolateTests(args, tests, testeeBefore: script);
  -
  
positive.code: // VMOptions=
  // VMOptions=--interpret_irregexp
  
  import "package:expect/expect.dart";
  import 'package:observatory/service_io.dart';
  import 'package:unittest/unittest.dart';
  import 'test_helper.dart';
  
negative.code:   regex = new RegExp(r"(\w+)");
    String str = "Parse my string";
    Iterable<Match> matches = regex.allMatches(str);  // Run to generate bytecode.
    expect(matches.length, equals(3));
  }
  
  var tests = [
  