Allow single-dash options to be specified without a space before value.

tools/test-runtime.dart

 #!/usr/bin/env dart
 // Copyright (c) 2011, 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.
 
 // TODO(ager): Get rid of this version of test.dart when we don't have
 // to worry about the special runtime checkout anymore.
 
 #library("test");
 
@@ skipping 11 matching lines @@
 main() {
   var startTime = new Date.now();
   var optionsParser = new TestOptionsParser();
   var configurations = optionsParser.parse(new Options().arguments);
   if (configurations == null) return;
   // Extract global options from first configuration.
   var firstConf = configurations[0];
   var queue = new ProcessQueue(firstConf['tasks'],
                                firstConf['progress'],
                                startTime);
+  Map<String, RegExp> selectors = firstConf['selectors'];
   for (var conf in configurations) {
-    queue.addTestSuite(new StandaloneTestSuite(conf));
-    queue.addTestSuite(new CorelibTestSuite(conf));
-    queue.addTestSuite(new Co19TestSuite(conf));
-    queue.addTestSuite(new LanguageTestSuite(conf));
-    queue.addTestSuite(new IsolateTestSuite(conf));
-    queue.addTestSuite(new StubGeneratorTestSuite(conf));
-    if (conf["component"] == "vm") {
+    if (selectors.containsKey('standalone')) {
+      queue.addTestSuite(new StandaloneTestSuite(conf));
+    }
+    if (selectors.containsKey('corelib')) {
+      queue.addTestSuite(new CorelibTestSuite(conf));
+    }
+    if (selectors.containsKey('co19')) {
+      queue.addTestSuite(new Co19TestSuite(conf));
+    }
+    if (selectors.containsKey('language')) {
+      queue.addTestSuite(new LanguageTestSuite(conf));
+    }
+    if (selectors.containsKey('isolate')) {
+      queue.addTestSuite(new IsolateTestSuite(conf));
+    }
+    if (selectors.containsKey('stub-generator')) {
+      queue.addTestSuite(new StubGeneratorTestSuite(conf));
+    }
+    if (conf['component'] == 'vm' && selectors.containsKey('vm')) {
       queue.addTestSuite(new VMTestSuite(conf));
     }
   }
 }