Use patching for regexp implementation.

corelib/src/implementation/regexp.dart

+// Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+class JSSyntaxRegExp implements RegExp {
+  external const JSSyntaxRegExp(String pattern,
+                                [bool multiLine, bool ignoreCase]);
+  external Match firstMatch(String str);
+  external Iterable<Match> allMatches(String str);
+  external bool hasMatch(String str);
+  external String stringMatch(String str);
+  external String get pattern();

[Lasse Reichstein Nielsen, 2012/08/23 09:24:06]

Can you remove the parentheses on the getters?

[Mads Ager (google), 2012/08/23 09:38:23]

Just tried and the answer is no apparently. Build fails.

+  external bool get multiLine();
+  external bool get ignoreCase();
+}