Added the continueParsing option to ArgParser.

pkg/args/test/parse_test.dart

Index: pkg/args/test/parse_test.dart
diff --git a/pkg/args/test/parse_test.dart b/pkg/args/test/parse_test.dart
index 715c2269218537157fff9a758ef37005905de3cc..fc5dc9c1fe94500d3a3d0f5c1c6bc86077a23247 100644
--- a/pkg/args/test/parse_test.dart
+++ b/pkg/args/test/parse_test.dart
@@ -389,14 +389,36 @@ main() {
       test('stops parsing args when a non-option-like arg is encountered', () {
         var parser = new ArgParser();
         parser.addFlag('woof');
+        parser.addFlag('neigh');
         parser.addOption('meow');
         parser.addOption('tweet', defaultsTo: 'bird');
 
-        var results = parser.parse(['--woof', '--meow', 'v', 'not', 'option']);
+        var results = parser.parse(['--woof', '--meow', 'v', 'not', 'option',
+          '--tweet', 'devrel', '--neigh', 'end' ]);

[Bob Nystrom, 2013/04/19 22:13:18]

Indent +2.

         expect(results['woof'], isTrue);
+        expect(results['neigh'], isFalse);
         expect(results['meow'], equals('v'));
         expect(results['tweet'], equals('bird'));
-        expect(results.rest, orderedEquals(['not', 'option']));
+        expect(results.rest, orderedEquals(['not', 'option', '--tweet',
+            'devrel', '--neigh', 'end']));
+      });
+
+      test('with continueParsing, continues parsing when non-option-like'
+        ' arg is encountered', () {
+        var parser = new ArgParser();
+        parser.addFlag('woof');
+        parser.addFlag('neigh');
+        parser.addOption('meow');
+        parser.addOption('tweet', defaultsTo: 'bird');
+
+        var results = parser.parse(['--woof', '--meow', 'v', 'not', 'option',
+          '--tweet', 'devrel', '--neigh', 'end' ],
+          continueParsing: true);
+        expect(results['woof'], isTrue);
+        expect(results['neigh'], isTrue);
+        expect(results['meow'], equals('v'));
+        expect(results['tweet'], equals('devrel'));
+        expect(results.rest, orderedEquals(['not', 'option', 'end']));
       });
 
       test('stops parsing at "--"', () {