Make "pub update PACKAGE" update a specific package.

utils/pub/command_update.dart

Index: utils/pub/command_update.dart
diff --git a/utils/pub/command_update.dart b/utils/pub/command_update.dart
index 959ee1812b155cf1f809f832465a47ea912534a5..c4a1045b360802681e9de429dc075452b046e887 100644
--- a/utils/pub/command_update.dart
+++ b/utils/pub/command_update.dart
@@ -12,11 +12,15 @@ class UpdateCommand extends PubCommand {
   String get description() =>
     "update the current package's dependencies to the latest versions";
 
-  String get usage() => 'pub update';
+  String get usage() => 'pub update [dependencies...]';
 
   Future onRun() {
-    return entrypoint.updateDependencies().transform((_) {
-      print("Dependencies updated!");
-    });
+    var future;
+    if (commandOptions.rest.isEmpty) {

[Bob Nystrom, 2012/07/23 20:44:07]

isEmpty()  <sigh>

+      future = entrypoint.updateAllDependencies();
+    } else {
+      future = entrypoint.updateDependencies(commandOptions.rest);
+    }
+    return future.transform((_) => print("Dependencies updated!"));
   }
 }