Properly handle Git URLs with trailing slashes.

utils/pub/git_source.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.
 
 #library('git_source');
 
 #import('io.dart');
 #import('package.dart');
 #import('source.dart');
 #import('source_registry.dart');
@@ skipping 46 matching lines @@
       var ref = _getEffectiveRef(id);
       if (ref == 'HEAD') return new Future.immediate(null);
       return _checkOut(revisionCachePath, ref);
     }).chain((_) => Package.load(revisionCachePath, systemCache.sources));
   }
 
   /**
    * The package name of a Git repo is the name of the directory into which
    * it'll be cloned.
    */
-  String packageName(description) =>
-    basename(_getUrl(description)).replaceFirst(const RegExp("\.git\$"), "");
+  String packageName(description) {
+    return basename(_getUrl(description)
+        .replaceFirst(const RegExp(@"(\.git)?/?$"), ""));
+  }
 
   /**
    * Ensures [description] is a Git URL.
    */
   void validateDescription(description, [bool fromLockFile = false]) {
     // A single string is assumed to be a Git URL.
     if (description is String) return;
     if (description is! Map || !description.containsKey('url')) {
       throw new FormatException("The description must be a Git URL or a map "
           "with a 'url' key.");
@@ skipping 145 matching lines @@
 
   /**
    * Returns [description] if it's a description, or [PackageId.description] if
    * it's a [PackageId].
    */
   _getDescription(description) {
     if (description is PackageId) return description.description;
     return description;
   }
 }