Use default_scope in isolated Engines to not force user to scope his routes

railties/lib/rails/engine.rb

@@ -303,6 +303,8 @@ module Rails
           end
         end
 
+        self.routes.default_scope = {:module => name}
+
         self.namespaced = true
       end
 

railties/test/railties/engine_test.rb

@@ -390,7 +390,6 @@ module RailtiesTest
 
       @plugin.write "config/routes.rb", <<-RUBY
         Bukkits::Engine.routes.draw do
-          scope(:module => :bukkits) do
           match "/foo" => "foo#index", :as => "foo"
           match "/foo/show" => "foo#show"
           match "/from_app" => "foo#from_app"
@@ -398,7 +397,6 @@ module RailtiesTest
           match "/polymorphic_path_without_namespace" => "foo#polymorphic_path_without_namespace"
           resources :posts
         end
-        end
       RUBY
 
       app_file "app/helpers/some_helper.rb", <<-RUBY
@@ -514,10 +512,8 @@ module RailtiesTest
 
       @plugin.write "config/routes.rb", <<-RUBY
         Bukkits::Engine.routes.draw do
-          scope(:module => :bukkits) do
           resources :posts
         end
-        end
       RUBY
 
       @plugin.write "app/controllers/bukkits/posts_controller.rb", <<-RUBY

railties/test/railties/mounted_engine_test.rb

@@ -56,13 +56,11 @@ module ApplicationTests
 
       @plugin.write "config/routes.rb", <<-RUBY
         Blog::Engine.routes.draw do
-          scope(:module => :blog) do
           resources :posts do
             get :generate_application_route
             get :application_route_in_view
           end
         end
-        end
       RUBY
 
       @plugin.write "app/controllers/blog/posts_controller.rb", <<-RUBY