Merge branch 'master' of git://github.com/rails/rails

Conflicts:
	actionmailer/lib/action_mailer/mail_helper.rb
	railties/lib/rails/configuration.rb

44 files changed, 1105 insertions, 832 deletions

diff --git a/railties/lib/generators/rails/app/templates/Rakefile b/railties/lib/generators/rails/app/templates/Rakefile
index c19ad0e945..9cb2046439 100755
--- a/railties/lib/generators/rails/app/templates/Rakefile
+++ b/railties/lib/generators/rails/app/templates/Rakefile
@@ -7,4 +7,4 @@ require 'rake'
 require 'rake/testtask'
 require 'rake/rdoctask'
 
-<%= app_const %>.load_tasks
+Rails::Application.load_tasks
diff --git a/railties/lib/generators/rails/app/templates/config/boot.rb b/railties/lib/generators/rails/app/templates/config/boot.rb
index 466e1e50ec..cbfa5ca3e9 100644
--- a/railties/lib/generators/rails/app/templates/config/boot.rb
+++ b/railties/lib/generators/rails/app/templates/config/boot.rb
@@ -19,7 +19,7 @@ require 'rails/all'
 # To pick the frameworks you want, remove 'require "rails/all"'
 # and list the framework railties that you want:
 #
-# require "active_model/railtie"
+# require "active_support/railtie"
 # require "active_record/railtie"
 # require "action_controller/railtie"
 # require "action_view/railtie"
@@ -28,7 +28,7 @@ require 'rails/all'
 <% else -%>
 # Pick the frameworks you want:
 # require "active_record/railtie"
-require "active_model/railtie"
+require "active_support/railtie"
 require "action_controller/railtie"
 require "action_view/railtie"
 require "action_mailer/railtie"
diff --git a/railties/lib/generators/rails/app/templates/script/console.tt b/railties/lib/generators/rails/app/templates/script/console.tt
index 915c5b8294..47aa254f9f 100755
--- a/railties/lib/generators/rails/app/templates/script/console.tt
+++ b/railties/lib/generators/rails/app/templates/script/console.tt
@@ -2,4 +2,4 @@ require File.expand_path('../../config/boot',  __FILE__)
 require 'rails/commands/console'
 require File.expand_path('../../config/application',  __FILE__)
 
-Rails::Console.start(<%= app_const %>)
+Rails::Console.start(Rails::Application)
diff --git a/railties/lib/generators/rails/app/templates/script/dbconsole.tt b/railties/lib/generators/rails/app/templates/script/dbconsole.tt
index a92f6f2844..1e53c1d761 100755
--- a/railties/lib/generators/rails/app/templates/script/dbconsole.tt
+++ b/railties/lib/generators/rails/app/templates/script/dbconsole.tt
@@ -2,4 +2,4 @@ require File.expand_path('../../config/boot',  __FILE__)
 require 'rails/commands/dbconsole'
 require File.expand_path('../../config/application',  __FILE__)
 
-Rails::DBConsole.start(<%= app_const %>)
+Rails::DBConsole.start(Rails::Application)
diff --git a/railties/lib/generators/rails/metal/templates/metal.rb b/railties/lib/generators/rails/metal/templates/metal.rb
index 2f5d4e7593..8cc3f1f258 100644
--- a/railties/lib/generators/rails/metal/templates/metal.rb
+++ b/railties/lib/generators/rails/metal/templates/metal.rb
@@ -1,5 +1,5 @@
 # Allow the metal piece to run in isolation
-require File.expand_path('../../../config/environment',  __FILE__)
+require File.expand_path('../../../config/environment',  __FILE__) unless defined?(Rails)
 
 class <%= class_name %>
   def self.call(env)
diff --git a/railties/lib/generators/rails/plugin/plugin_generator.rb b/railties/lib/generators/rails/plugin/plugin_generator.rb
index b68b8691db..8f01dcd589 100644
--- a/railties/lib/generators/rails/plugin/plugin_generator.rb
+++ b/railties/lib/generators/rails/plugin/plugin_generator.rb
@@ -17,7 +17,7 @@ module Rails
 
       def create_tasks_files
         return unless options[:tasks]
-        directory 'tasks', plugin_dir('tasks')
+        directory 'lib/tasks', plugin_dir('lib/tasks')
       end
 
       hook_for :generator do |generator|
diff --git a/railties/lib/generators/rails/plugin/templates/tasks/%file_name%_tasks.rake.tt b/railties/lib/generators/rails/plugin/templates/lib/tasks/%file_name%_tasks.rake.tt
index 72920a9d3a..72920a9d3a 100644
--- a/railties/lib/generators/rails/plugin/templates/tasks/%file_name%_tasks.rake.tt
+++ b/railties/lib/generators/rails/plugin/templates/lib/tasks/%file_name%_tasks.rake.tt
diff --git a/railties/lib/rails.rb b/railties/lib/rails.rb
index 0bc7160815..623555e7c1 100644
--- a/railties/lib/rails.rb
+++ b/railties/lib/rails.rb
@@ -4,15 +4,8 @@ require 'active_support'
 require 'active_support/core_ext/kernel/reporting'
 require 'active_support/core_ext/logger'
 
-require 'rails/initializable'
 require 'rails/application'
-require 'rails/railtie'
-require 'rails/plugin'
-require 'rails/railties_path'
 require 'rails/version'
-require 'rails/rack'
-require 'rails/paths'
-require 'rails/configuration'
 require 'rails/deprecation'
 require 'rails/subscriber'
 require 'rails/ruby_version_check'
@@ -32,8 +25,6 @@ else
 end
 
 module Rails
-  autoload :Bootstrap, 'rails/bootstrap'
-
   class << self
     def application
       @@application ||= nil
diff --git a/railties/lib/rails/all.rb b/railties/lib/rails/all.rb
index 7dfe2b8b63..b8292a9b7e 100644
--- a/railties/lib/rails/all.rb
+++ b/railties/lib/rails/all.rb
@@ -1,6 +1,7 @@
 require "rails"
 
 %w(
+  active_support
   active_model
   active_record
   action_controller
diff --git a/railties/lib/rails/application.rb b/railties/lib/rails/application.rb
index 8366127476..ab66d1e90b 100644
--- a/railties/lib/rails/application.rb
+++ b/railties/lib/rails/application.rb
@@ -1,118 +1,87 @@
-require "fileutils"
-require 'active_support/core_ext/module/delegation'
+require 'fileutils'
+require 'rails/railties_path'
+require 'rails/plugin'
+require 'rails/engine'
 
 module Rails
-  class Application
-    include Initializable
+  class Application < Engine
+    autoload :Bootstrap,      'rails/application/bootstrap'
+    autoload :Configuration,  'rails/application/configuration'
+    autoload :Finisher,       'rails/application/finisher'
+    autoload :Railties,       'rails/application/railties'
+    autoload :RoutesReloader, 'rails/application/routes_reloader'
 
     class << self
-      attr_writer :config
-      alias configure class_eval
-      delegate :call,
-        :initialize!,
-        :load_generators,
-        :load_tasks,
-        :middleware,
-        :root,
-        :to => :instance
-
       private :new
+      alias   :configure :class_eval
+
       def instance
-        @instance ||= new
+        if instance_of?(Rails::Application)
+          Rails.application.instance
+        else
+          @instance ||= new
+        end
       end
 
-      def config
-        @config ||= Configuration.new(Plugin::Configuration.default)
+      def inherited(base)
+        raise "You cannot have more than one Rails::Application" if Rails.application
+        super
+        Rails.application = base.instance
       end
 
-      def routes
-        ActionController::Routing::Routes
+    protected
+
+      def method_missing(*args, &block)
+        instance.send(*args, &block)
       end
     end
 
-    delegate :config, :routes, :to => :'self.class'
-    delegate :root, :middleware, :to => :config
-    attr_reader :route_configuration_files
-
-    def initialize
-      require_environment
-      Rails.application ||= self
-      @route_configuration_files = []
+    def require_environment!
+      environment = config.paths.config.environment.to_a.first
+      require environment if environment
     end
 
-    def initialize!
-      run_initializers(self)
-      self
+    def config
+      @config ||= Application::Configuration.new(self.class.find_root_with_flag("config.ru", Dir.pwd))
     end
 
-    def require_environment
-      require config.environment_path
-    rescue LoadError
+    def routes
+      ::ActionController::Routing::Routes
     end
 
-    def routes_changed_at
-      routes_changed_at = nil
-
-      route_configuration_files.each do |config|
-        config_changed_at = File.stat(config).mtime
-
-        if routes_changed_at.nil? || config_changed_at > routes_changed_at
-          routes_changed_at = config_changed_at
-        end
-      end
+    def railties
+      @railties ||= Railties.new(config)
+    end
 
-      routes_changed_at
+    def routes_reloader
+      @routes_reloader ||= RoutesReloader.new(config)
     end
 
     def reload_routes!
-      routes.disable_clear_and_finalize = true
-
-      routes.clear!
-      route_configuration_files.each { |config| load(config) }
-      routes.finalize!
+      routes_reloader.reload!
+    end
 
-      nil
-    ensure
-      routes.disable_clear_and_finalize = false
+    def initialize!
+      run_initializers(self)
+      self
     end
 
     def load_tasks
-      require "rails/tasks"
-      plugins.each { |p| p.load_tasks }
-      # Load all application tasks
-      # TODO: extract out the path to the rake tasks
-      Dir["#{root}/lib/tasks/**/*.rake"].sort.each { |ext| load ext }
-      task :environment do
-        $rails_rake_task = true
-        initialize!
-      end
+      initialize_tasks
+      super
+      railties.all { |r| r.load_tasks }
+      self
     end
 
     def load_generators
-      plugins.each { |p| p.load_generators }
-    end
-
-    def initializers
-      initializers = Bootstrap.new(self).initializers
-      plugins.each { |p| initializers += p.initializers }
-      initializers += super
-      initializers
-    end
-
-    # TODO: Fix this method. It loads all railties independent if :all is given
-    # or not, otherwise frameworks are never loaded.
-    def plugins
-      @plugins ||= begin
-        plugin_names = (config.plugins || [:all]).map { |p| p.to_sym }
-        Railtie.plugins.map(&:new) + Plugin.all(plugin_names, config.paths.vendor.plugins)
-      end
+      initialize_generators
+      super
+      railties.all { |r| r.load_generators }
+      self
     end
 
     def app
-      @app ||= begin
-        reload_routes!
-        middleware.build(routes)
-      end
+      @app ||= middleware.build(routes)
     end
 
     def call(env)
@@ -120,42 +89,31 @@ module Rails
       app.call(env)
     end
 
-    initializer :load_application_initializers do
-      Dir["#{root}/config/initializers/**/*.rb"].sort.each do |initializer|
-        load(initializer)
-      end
+    def initializers
+      initializers = Bootstrap.initializers
+      initializers += super
+      railties.all { |r| initializers += r.initializers }
+      initializers += Finisher.initializers
+      initializers
     end
 
-    initializer :build_middleware_stack do
-      app
-    end
+  protected
 
-    # Fires the user-supplied after_initialize block (Configuration#after_initialize)
-    initializer :after_initialize do
-      config.after_initialize_blocks.each do |block|
-        block.call
+    def initialize_tasks
+      require "rails/tasks"
+      task :environment do
+        $rails_rake_task = true
+        initialize!
       end
     end
 
-    # Eager load application classes
-    initializer :load_application_classes do
-      next if $rails_rake_task
-
-      if config.cache_classes
-        config.eager_load_paths.each do |load_path|
-          matcher = /\A#{Regexp.escape(load_path)}(.*)\.rb\Z/
-          Dir.glob("#{load_path}/**/*.rb").sort.each do |file|
-            require_dependency file.sub(matcher, '\1')
-          end
-        end
-      end
+    def initialize_generators
+      require "rails/generators"
     end
 
-    # Disable dependency loading during request cycle
-    initializer :disable_dependency_loading do
-      if config.cache_classes && !config.dependency_loading
-        ActiveSupport::Dependencies.unhook!
-      end
+    # Application is always reloadable when config.cache_classes is false.
+    def reloadable?(app)
+      true
     end
   end
 end
diff --git a/railties/lib/rails/application/bootstrap.rb b/railties/lib/rails/application/bootstrap.rb
new file mode 100644
index 0000000000..3c339ffc57
--- /dev/null
+++ b/railties/lib/rails/application/bootstrap.rb
@@ -0,0 +1,81 @@
+module Rails
+  class Application
+    module Bootstrap
+      include Initializable
+
+      initializer :load_environment_config do |app|
+        app.require_environment!
+      end
+
+      initializer :load_all_active_support do |app|
+        require "active_support/all" unless app.config.active_support.bare
+      end
+
+      # Preload all frameworks specified by the Configuration#frameworks.
+      # Used by Passenger to ensure everything's loaded before forking and
+      # to avoid autoload race conditions in JRuby.
+      initializer :preload_frameworks do |app|
+        require 'active_support/dependencies'
+        ActiveSupport::Autoload.eager_autoload! if app.config.preload_frameworks
+      end
+
+      # Initialize the logger early in the stack in case we need to log some deprecation.
+      initializer :initialize_logger do |app|
+        Rails.logger ||= app.config.logger || begin
+          path = app.config.paths.log.to_a.first
+          logger = ActiveSupport::BufferedLogger.new(path)
+          logger.level = ActiveSupport::BufferedLogger.const_get(app.config.log_level.to_s.upcase)
+          logger.auto_flushing = false if Rails.env.production?
+          logger
+        rescue StandardError => e
+          logger = ActiveSupport::BufferedLogger.new(STDERR)
+          logger.level = ActiveSupport::BufferedLogger::WARN
+          logger.warn(
+            "Rails Error: Unable to access log file. Please ensure that #{path} exists and is chmod 0666. " +
+            "The log level has been raised to WARN and the output directed to STDERR until the problem is fixed."
+          )
+          logger
+        end
+      end
+
+      # Initialize cache early in the stack so railties can make use of it.
+      initializer :initialize_cache do |app|
+        unless defined?(RAILS_CACHE)
+          silence_warnings { Object.const_set "RAILS_CACHE", ActiveSupport::Cache.lookup_store(app.config.cache_store) }
+
+          if RAILS_CACHE.respond_to?(:middleware)
+            app.config.middleware.insert_after(:"Rack::Lock", RAILS_CACHE.middleware)
+          end
+        end
+      end
+
+      # Initialize rails subscriber on top of notifications.
+      initializer :initialize_subscriber do |app|
+        require 'active_support/notifications'
+
+        if app.config.colorize_logging == false
+          Rails::Subscriber.colorize_logging     = false
+          app.config.generators.colorize_logging = false
+        end
+
+        ActiveSupport::Notifications.subscribe do |*args|
+          Rails::Subscriber.dispatch(args)
+        end
+      end
+
+      initializer :set_clear_dependencies_hook do |app|
+        unless app.config.cache_classes
+          ActionDispatch::Callbacks.after do
+            ActiveSupport::Dependencies.clear
+          end
+        end
+      end
+
+      # Sets the dependency loading mechanism.
+      # TODO: Remove files from the $" and always use require.
+      initializer :initialize_dependency_mechanism do |app|
+        ActiveSupport::Dependencies.mechanism = app.config.cache_classes ? :require : :load
+      end
+    end
+  end
+end
\ No newline at end of file
diff --git a/railties/lib/rails/application/configuration.rb b/railties/lib/rails/application/configuration.rb
new file mode 100644
index 0000000000..aaf18b5f51
--- /dev/null
+++ b/railties/lib/rails/application/configuration.rb
@@ -0,0 +1,85 @@
+require 'rails/engine/configuration'
+
+module Rails
+  class Application
+    class Configuration < ::Rails::Engine::Configuration
+      include ::Rails::Configuration::Deprecated
+
+      attr_accessor :cache_classes, :cache_store, :colorize_logging,
+                    :consider_all_requests_local, :dependency_loading,
+                    :filter_parameters,  :log_level, :logger, :metals,
+                    :plugins, :preload_frameworks, :reload_plugins,
+                    :serve_static_assets, :time_zone, :whiny_nils
+
+      def initialize(*)
+        super
+        @filter_parameters   = []
+        @dependency_loading  = true
+        @serve_static_assets = true
+      end
+
+      def paths
+        @paths ||= begin
+          paths = super
+          paths.app.controllers << builtin_controller if builtin_controller
+          paths.config.database    "config/database.yml"
+          paths.log                "log/#{Rails.env}.log"
+          paths.tmp                "tmp"
+          paths.tmp.cache          "tmp/cache"
+          paths.vendor             "vendor", :load_path => true
+          paths.vendor.plugins     "vendor/plugins"
+
+          if File.exists?("#{root}/test/mocks/#{Rails.env}")
+            ActiveSupport::Deprecation.warn "\"RAILS_ROOT/test/mocks/#{Rails.env}\" won't be added " <<
+              "automatically to load paths anymore in future releases"
+            paths.mocks_path  "test/mocks", :load_path => true, :glob => Rails.env
+          end
+
+          paths
+        end
+      end
+
+      # Enable threaded mode. Allows concurrent requests to controller actions and
+      # multiple database connections. Also disables automatic dependency loading
+      # after boot, and disables reloading code on every request, as these are
+      # fundamentally incompatible with thread safety.
+      def threadsafe!
+        self.preload_frameworks = true
+        self.cache_classes = true
+        self.dependency_loading = false
+        self.action_controller.allow_concurrency = true if respond_to?(:action_controller)
+        self
+      end
+
+      # Loads and returns the contents of the #database_configuration_file. The
+      # contents of the file are processed via ERB before being sent through
+      # YAML::load.
+      def database_configuration
+        require 'erb'
+        YAML::load(ERB.new(IO.read(paths.config.database.to_a.first)).result)
+      end
+
+      def cache_store
+        @cache_store ||= begin
+          if File.exist?("#{root}/tmp/cache/")
+            [ :file_store, "#{root}/tmp/cache/" ]
+          else
+            :memory_store
+          end
+        end
+      end
+
+      def builtin_controller
+        File.join(RAILTIES_PATH, "builtin", "rails_info") if Rails.env.development?
+      end
+
+      def log_level
+        @log_level ||= Rails.env.production? ? :info : :debug
+      end
+
+      def time_zone
+        @time_zone ||= "UTC"
+      end
+    end
+  end
+end
\ No newline at end of file
diff --git a/railties/lib/rails/application/finisher.rb b/railties/lib/rails/application/finisher.rb
new file mode 100644
index 0000000000..5cc5b4ae88
--- /dev/null
+++ b/railties/lib/rails/application/finisher.rb
@@ -0,0 +1,43 @@
+module Rails
+  class Application
+    module Finisher
+      include Initializable
+
+      initializer :ensure_load_once_paths_as_subset do
+        extra = ActiveSupport::Dependencies.load_once_paths -
+                ActiveSupport::Dependencies.load_paths
+
+        unless extra.empty?
+          abort <<-end_error
+            load_once_paths must be a subset of the load_paths.
+            Extra items in load_once_paths: #{extra * ','}
+          end_error
+        end
+      end
+
+      initializer :add_builtin_route do |app|
+        if Rails.env.development?
+          Rails::Application::RoutesReloader.paths << File.join(RAILTIES_PATH, 'builtin', 'routes.rb')
+        end
+      end
+
+      initializer :build_middleware_stack do |app|
+        app.app
+      end
+
+      # Fires the user-supplied after_initialize block (config#after_initialize)
+      initializer :after_initialize do |app|
+        app.config.after_initialize_blocks.each do |block|
+          block.call(app)
+        end
+      end
+
+      # Disable dependency loading during request cycle
+      initializer :disable_dependency_loading do |app|
+        if app.config.cache_classes && !app.config.dependency_loading
+          ActiveSupport::Dependencies.unhook!
+        end
+      end
+    end
+  end
+end
\ No newline at end of file
diff --git a/railties/lib/rails/application/railties.rb b/railties/lib/rails/application/railties.rb
new file mode 100644
index 0000000000..b3e6693f89
--- /dev/null
+++ b/railties/lib/rails/application/railties.rb
@@ -0,0 +1,31 @@
+module Rails
+  class Application
+    class Railties
+      # TODO Write tests for this behavior extracted from Application
+      def initialize(config)
+        @config = config
+      end
+
+      def all(&block)
+        @all ||= railties + engines + plugins
+        @all.each(&block) if block
+        @all
+      end
+
+      def railties
+        @railties ||= ::Rails::Railtie.subclasses.map(&:new)
+      end
+
+      def engines
+        @engines ||= ::Rails::Engine.subclasses.map(&:new)
+      end
+
+      def plugins
+        @plugins ||= begin
+          plugin_names = (@config.plugins || [:all]).map { |p| p.to_sym }
+          Plugin.all(plugin_names, @config.paths.vendor.plugins)
+        end
+      end
+    end
+  end
+end
\ No newline at end of file
diff --git a/railties/lib/rails/application/routes_reloader.rb b/railties/lib/rails/application/routes_reloader.rb
new file mode 100644
index 0000000000..fe0cfb7801
--- /dev/null
+++ b/railties/lib/rails/application/routes_reloader.rb
@@ -0,0 +1,49 @@
+module Rails
+  class Application
+    # TODO Write tests for this behavior extracted from Application
+    class RoutesReloader
+      def self.paths
+        @paths ||= []
+      end
+
+      def initialize(config)
+        @config, @last_change_at = config, nil
+      end
+
+      def changed_at
+        routes_changed_at = nil
+
+        self.class.paths.each do |path|
+          config_changed_at = File.stat(path).mtime
+
+          if routes_changed_at.nil? || config_changed_at > routes_changed_at
+            routes_changed_at = config_changed_at
+          end
+        end
+
+        routes_changed_at
+      end
+
+      def reload!
+        routes = Rails::Application.routes
+        routes.disable_clear_and_finalize = true
+
+        routes.clear!
+        self.class.paths.each { |path| load(path) }
+        routes.finalize!
+
+        nil
+      ensure
+        routes.disable_clear_and_finalize = false
+      end
+
+      def reload_if_changed
+        current_change_at = changed_at
+        if @last_change_at != current_change_at
+          @last_change_at = current_change_at
+          reload!
+        end
+      end
+    end
+  end
+end
\ No newline at end of file
diff --git a/railties/lib/rails/bootstrap.rb b/railties/lib/rails/bootstrap.rb
deleted file mode 100644
index 5db663f9ef..0000000000
--- a/railties/lib/rails/bootstrap.rb
+++ /dev/null
@@ -1,161 +0,0 @@
-module Rails
-  class Bootstrap #< Railtie
-    include Initializable
-
-    def initialize(application)
-      @application = application
-    end
-
-    delegate :config, :root, :to => :'@application'
-
-    initializer :load_all_active_support do
-      require "active_support/all" unless config.active_support.bare
-    end
-
-    # Set the <tt>$LOAD_PATH</tt> based on the value of
-    # Configuration#load_paths. Duplicates are removed.
-    initializer :set_load_path do
-      config.paths.add_to_load_path
-      $LOAD_PATH.uniq!
-    end
-
-    # Set the paths from which Rails will automatically load source files, and
-    # the load_once paths.
-    initializer :set_autoload_paths do
-      require 'active_support/dependencies'
-      ActiveSupport::Dependencies.load_paths = expand_load_path(config.load_paths)
-      ActiveSupport::Dependencies.load_once_paths = expand_load_path(config.load_once_paths)
-
-      extra = ActiveSupport::Dependencies.load_once_paths - ActiveSupport::Dependencies.load_paths
-      unless extra.empty?
-        abort <<-end_error
-          load_once_paths must be a subset of the load_paths.
-          Extra items in load_once_paths: #{extra * ','}
-        end_error
-      end
-
-      # Freeze the arrays so future modifications will fail rather than do nothing mysteriously
-      config.load_once_paths.freeze
-    end
-
-    # Create tmp directories
-    initializer :ensure_tmp_directories_exist do
-      %w(cache pids sessions sockets).each do |dir_to_make|
-        FileUtils.mkdir_p(File.join(root, 'tmp', dir_to_make))
-      end
-    end
-
-    # Preload all frameworks specified by the Configuration#frameworks.
-    # Used by Passenger to ensure everything's loaded before forking and
-    # to avoid autoload race conditions in JRuby.
-    initializer :preload_frameworks do
-      ActiveSupport::Autoload.eager_autoload! if config.preload_frameworks
-    end
-
-    initializer :initialize_cache do
-      unless defined?(RAILS_CACHE)
-        silence_warnings { Object.const_set "RAILS_CACHE", ActiveSupport::Cache.lookup_store(config.cache_store) }
-
-        if RAILS_CACHE.respond_to?(:middleware)
-          # Insert middleware to setup and teardown local cache for each request
-          config.middleware.insert_after(:"Rack::Lock", RAILS_CACHE.middleware)
-        end
-      end
-    end
-
-    initializer :initialize_logger do
-      Rails.logger ||= config.logger || begin
-        logger = ActiveSupport::BufferedLogger.new(config.log_path)
-        logger.level = ActiveSupport::BufferedLogger.const_get(config.log_level.to_s.upcase)
-        logger.auto_flushing = false if Rails.env.production?
-        logger
-      rescue StandardError => e
-        logger = ActiveSupport::BufferedLogger.new(STDERR)
-        logger.level = ActiveSupport::BufferedLogger::WARN
-        logger.warn(
-          "Rails Error: Unable to access log file. Please ensure that #{config.log_path} exists and is chmod 0666. " +
-          "The log level has been raised to WARN and the output directed to STDERR until the problem is fixed."
-        )
-        logger
-      end
-    end
-
-    # Sets the logger for dependencies and cache store.
-    initializer :initialize_framework_logging do
-      ActiveSupport::Dependencies.logger ||= Rails.logger
-      Rails.cache.logger ||= Rails.logger
-    end
-
-    # Sets the dependency loading mechanism based on the value of
-    # Configuration#cache_classes.
-    initializer :initialize_dependency_mechanism do
-      # TODO: Remove files from the $" and always use require
-      ActiveSupport::Dependencies.mechanism = config.cache_classes ? :require : :load
-    end
-
-    # Loads support for "whiny nil" (noisy warnings when methods are invoked
-    # on +nil+ values) if Configuration#whiny_nils is true.
-    initializer :initialize_whiny_nils do
-      require 'active_support/whiny_nil' if config.whiny_nils
-    end
-
-    # Sets the default value for Time.zone
-    # If assigned value cannot be matched to a TimeZone, an exception will be raised.
-    initializer :initialize_time_zone do
-      require 'active_support/core_ext/time/zones'
-      zone_default = Time.__send__(:get_zone, config.time_zone)
-
-      unless zone_default
-        raise \
-          'Value assigned to config.time_zone not recognized.' +
-          'Run "rake -D time" for a list of tasks for finding appropriate time zone names.'
-      end
-
-      Time.zone_default = zone_default
-    end
-
-    # Set the i18n configuration from config.i18n but special-case for the load_path which should be
-    # appended to what's already set instead of overwritten.
-    initializer :initialize_i18n do
-      require 'active_support/i18n'
-
-      config.i18n.each do |setting, value|
-        if setting == :load_path
-          I18n.load_path += value
-        else
-          I18n.send("#{setting}=", value)
-        end
-      end
-
-      ActionDispatch::Callbacks.to_prepare do
-        I18n.reload!
-      end
-    end
-
-    initializer :set_clear_dependencies_hook do
-      unless config.cache_classes
-        ActionDispatch::Callbacks.after do
-          ActiveSupport::Dependencies.clear
-        end
-      end
-    end
-
-    initializer :initialize_notifications do
-      require 'active_support/notifications'
-
-      if config.colorize_logging == false
-        Rails::Subscriber.colorize_logging = false
-        config.generators.colorize_logging = false
-      end
-
-      ActiveSupport::Notifications.subscribe do |*args|
-        Rails::Subscriber.dispatch(args)
-      end
-    end
-
-    private
-      def expand_load_path(load_paths)
-        load_paths.map { |path| Dir.glob(path.to_s) }.flatten.uniq
-      end
-  end
-end
diff --git a/railties/lib/rails/commands/console.rb b/railties/lib/rails/commands/console.rb
index 27ac7fd20a..a984eff6e2 100644
--- a/railties/lib/rails/commands/console.rb
+++ b/railties/lib/rails/commands/console.rb
@@ -1,6 +1,6 @@
 require 'optparse'
 require 'irb'
-require "irb/completion"
+require 'irb/completion'
 
 module Rails
   class Console
@@ -24,9 +24,9 @@ module Rails
       end
 
       @app.initialize!
-      require "rails/console_app"
-      require "rails/console_sandbox" if options[:sandbox]
-      require "rails/console_with_helpers"
+      require "rails/console/app"
+      require "rails/console/sandbox" if options[:sandbox]
+      require "rails/console/helpers"
 
       if options[:debugger]
         begin
diff --git a/railties/lib/rails/configuration.rb b/railties/lib/rails/configuration.rb
index 21736a28eb..3c5c1c1e16 100644
--- a/railties/lib/rails/configuration.rb
+++ b/railties/lib/rails/configuration.rb
@@ -1,296 +1,84 @@
 require 'active_support/ordered_options'
+require 'rails/paths'
+require 'rails/rack'
 
 module Rails
-  # Temporarily separate the plugin configuration class from the main
-  # configuration class while this bit is being cleaned up.
-  class Railtie::Configuration
-    def self.default
-      @default ||= new
-    end
-
-    def self.default_middleware_stack
-      ActionDispatch::MiddlewareStack.new.tap do |middleware|
-        middleware.use('::ActionDispatch::Static', lambda { Rails.public_path }, :if => lambda { Rails.application.config.serve_static_assets })
-        middleware.use('::Rack::Lock', :if => lambda { !ActionController::Base.allow_concurrency })
-        middleware.use('::Rack::Runtime')
-        middleware.use('::Rails::Rack::Logger')
-        middleware.use('::ActionDispatch::ShowExceptions', lambda { ActionController::Base.consider_all_requests_local })
-        middleware.use('::ActionDispatch::Callbacks', lambda { !Rails.application.config.cache_classes })
-        middleware.use('::ActionDispatch::Cookies')
-        middleware.use(lambda { ActionController::Base.session_store }, lambda { ActionController::Base.session_options })
-        middleware.use('::ActionDispatch::Flash', :if => lambda { ActionController::Base.session_store })
-        middleware.use(lambda { Rails::Rack::Metal.new(Rails.application.config.paths.app.metals.to_a, Rails.application.config.metals) })
-        middleware.use('ActionDispatch::ParamsParser')
-        middleware.use('::Rack::MethodOverride')
-        middleware.use('::ActionDispatch::Head')
-      end
-    end
-
-    attr_reader :middleware
-
-    def initialize(base = nil)
-      if base
-        @options    = base.options.dup
-        @middleware = base.middleware.dup
-      else
-        @options    = Hash.new { |h,k| h[k] = ActiveSupport::OrderedOptions.new }
-        @middleware = self.class.default_middleware_stack
-      end
-    end
-
-    def respond_to?(name)
-      super || name.to_s =~ config_key_regexp
-    end
-
-  protected
-
-    attr_reader :options
-
-  private
-
-    def method_missing(name, *args, &blk)
-      if name.to_s =~ config_key_regexp
-        return $2 == '=' ? @options[$1] = args.first : @options[$1]
+  module Configuration
+    module Shared
+      def middleware
+        @@default_middleware_stack ||= ActionDispatch::MiddlewareStack.new.tap do |middleware|
+          middleware.use('::ActionDispatch::Static', lambda { Rails.public_path }, :if => lambda { Rails.application.config.serve_static_assets })
+          middleware.use('::Rack::Lock', :if => lambda { !ActionController::Base.allow_concurrency })
+          middleware.use('::Rack::Runtime')
+          middleware.use('::Rails::Rack::Logger')
+          middleware.use('::ActionDispatch::ShowExceptions', lambda { ActionController::Base.consider_all_requests_local })
+          middleware.use('::ActionDispatch::Callbacks', lambda { !Rails.application.config.cache_classes })
+          middleware.use('::ActionDispatch::Cookies')
+          middleware.use(lambda { ActionController::Base.session_store }, lambda { ActionController::Base.session_options })
+          middleware.use('::ActionDispatch::Flash', :if => lambda { ActionController::Base.session_store })
+          middleware.use(lambda { Rails::Rack::Metal.new(Rails.application.config.metals) })
+          middleware.use('ActionDispatch::ParamsParser')
+          middleware.use('::Rack::MethodOverride')
+          middleware.use('::ActionDispatch::Head')
+        end
       end
 
-      super
-    end
-
-    def config_key_regexp
-      bits = config_keys.map { |n| Regexp.escape(n.to_s) }.join('|')
-      /^(#{bits})(?:=)?$/
-    end
-
-    def config_keys
-      ([ :active_support, :action_view ] +
-        Railtie.plugin_names).map { |n| n.to_s }.uniq
-    end
-  end
-
-  class Configuration < Railtie::Configuration
-    attr_accessor :after_initialize_blocks, :cache_classes, :colorize_logging,
-                  :consider_all_requests_local, :dependency_loading, :filter_parameters,
-                  :load_once_paths, :logger, :metals, :plugins,
-                  :preload_frameworks, :reload_plugins, :serve_static_assets,
-                  :time_zone, :whiny_nils
-
-    attr_writer :cache_store, :controller_paths,
-                :database_configuration_file, :eager_load_paths,
-                :i18n, :load_paths, :log_level, :log_path, :paths,
-                :routes_configuration_file, :view_path
-
-    def initialize(base = nil)
-      super
-      @load_once_paths              = []
-      @after_initialize_blocks      = []
-      @filter_parameters            = []
-      @dependency_loading           = true
-      @serve_static_assets          = true
-    end
-
-    def after_initialize(&blk)
-      @after_initialize_blocks << blk if blk
-    end
-
-    def root
-      @root ||= begin
-        call_stack = caller.map { |p| p.split(':').first }
-        root_path  = call_stack.detect { |p| p !~ %r[railties/lib/rails|rack/lib/rack] }
-        root_path  = File.dirname(root_path)
-
-        while root_path && File.directory?(root_path) && !File.exist?("#{root_path}/config.ru")
-          parent = File.dirname(root_path)
-          root_path = parent != root_path && parent
+      # Holds generators configuration:
+      #
+      #   config.generators do |g|
+      #     g.orm             :datamapper, :migration => true
+      #     g.template_engine :haml
+      #     g.test_framework  :rspec
+      #   end
+      #
+      # If you want to disable color in console, do:
+      #
+      #   config.generators.colorize_logging = false
+      #
+      def generators
+        @@generators ||= Rails::Configuration::Generators.new
+        if block_given?
+          yield @@generators
+        else
+          @@generators
         end
-
-        root = File.exist?("#{root_path}/config.ru") ? root_path : Dir.pwd
-
-        RUBY_PLATFORM =~ /(:?mswin|mingw)/ ?
-          Pathname.new(root).expand_path :
-          Pathname.new(root).realpath
       end
-    end
-
-    def root=(root)
-      @root = Pathname.new(root).expand_path
-    end
 
-    def paths
-      @paths ||= begin
-        paths = Rails::Application::Root.new(root)
-        paths.app                 "app",             :load_path => true
-        paths.app.metals          "app/metal",       :eager_load => true
-        paths.app.models          "app/models",      :eager_load => true
-        paths.app.controllers     "app/controllers", builtin_directories, :eager_load => true
-        paths.app.helpers         "app/helpers",     :eager_load => true
-        paths.app.services        "app/services",    :load_path => true
-        paths.lib                 "lib",             :load_path => true
-        paths.vendor              "vendor",          :load_path => true
-        paths.vendor.plugins      "vendor/plugins"
-        paths.tmp                 "tmp"
-        paths.tmp.cache           "tmp/cache"
-        paths.config              "config"
-        paths.config.locales      "config/locales"
-        paths.config.environments "config/environments", :glob => "#{Rails.env}.rb"
-        paths
+      def after_initialize_blocks
+        @@after_initialize_blocks ||= []
       end
-    end
-
-    def frameworks(*args)
-      raise "config.frameworks is no longer supported. See the generated " \
-            "config/boot.rb for steps on how to limit the frameworks that " \
-            "will be loaded"
-    end
-    alias frameworks= frameworks
 
-    # Enable threaded mode. Allows concurrent requests to controller actions and
-    # multiple database connections. Also disables automatic dependency loading
-    # after boot, and disables reloading code on every request, as these are
-    # fundamentally incompatible with thread safety.
-    def threadsafe!
-      self.preload_frameworks = true
-      self.cache_classes = true
-      self.dependency_loading = false
-
-      if respond_to?(:action_controller)
-        action_controller.allow_concurrency = true
+      def after_initialize(&blk)
+        after_initialize_blocks << blk if blk
       end
-      self
-    end
-
-    # Loads and returns the contents of the #database_configuration_file. The
-    # contents of the file are processed via ERB before being sent through
-    # YAML::load.
-    def database_configuration
-      require 'erb'
-      YAML::load(ERB.new(IO.read(database_configuration_file)).result)
-    end
-
-    def routes_configuration_file
-      @routes_configuration_file ||= File.join(root, 'config', 'routes.rb')
-    end
 
-    def builtin_routes_configuration_file
-      @builtin_routes_configuration_file ||= File.join(RAILTIES_PATH, 'builtin', 'routes.rb')
-    end
-
-    def controller_paths
-      @controller_paths ||= begin
-        paths = [File.join(root, 'app', 'controllers')]
-        paths.concat builtin_directories
-        paths
+      def respond_to?(name)
+        super || name.to_s =~ config_key_regexp
       end
-    end
 
-    def cache_store
-      @cache_store ||= begin
-        if File.exist?("#{root}/tmp/cache/")
-          [ :file_store, "#{root}/tmp/cache/" ]
-        else
-          :memory_store
+    private
+
+      def method_missing(name, *args, &blk)
+        if name.to_s =~ config_key_regexp
+          return $2 == '=' ? options[$1] = args.first : options[$1]
         end
+        super
       end
-    end
 
-    def database_configuration_file
-      @database_configuration_file ||= File.join(root, 'config', 'database.yml')
-    end
-
-    def view_path
-      @view_path ||= File.join(root, 'app', 'views')
-    end
-
-    def eager_load_paths
-      @eager_load_paths ||= ["#{root}/app/*"]
-    end
-
-    def load_paths
-      @load_paths ||= begin
-        paths = []
-
-        # Add the old mock paths only if the directories exists
-        paths.concat(Dir["#{root}/test/mocks/#{Rails.env}"]) if File.exists?("#{root}/test/mocks/#{Rails.env}")
-
-        # Followed by the standard includes.
-        paths.concat %w(
-          app
-          app/*
-          lib
-          vendor
-        ).map { |dir| "#{root}/#{dir}" }
-
-        paths.concat builtin_directories
+      def config_key_regexp
+        bits = config_keys.map { |n| Regexp.escape(n.to_s) }.join('|')
+        /^(#{bits})(?:=)?$/
       end
-    end
 
-    def builtin_directories
-      # Include builtins only in the development environment.
-      Rails.env.development? ? Dir["#{RAILTIES_PATH}/builtin/*/"] : []
-    end
-
-    def log_path
-      @log_path ||= File.join(root, 'log', "#{Rails.env}.log")
-    end
-
-    def log_level
-      @log_level ||= Rails.env.production? ? :info : :debug
-    end
-
-    def time_zone
-      @time_zone ||= "UTC"
-    end
-
-    def i18n
-      @i18n ||= begin
-        i18n = ActiveSupport::OrderedOptions.new
-        i18n.load_path = []
-
-        if File.exist?(File.join(root, 'config', 'locales'))
-          i18n.load_path << Dir[File.join(root, 'config', 'locales', '*.{rb,yml}')]
-          i18n.load_path.flatten!
-        end
-
-        i18n
+      def config_keys
+        (Railtie.railtie_names + Engine.engine_names).map { |n| n.to_s }.uniq
       end
-    end
 
-    def environment_path
-      "#{root}/config/environments/#{Rails.env}.rb"
-    end
-
-    # Holds generators configuration:
-    #
-    #   config.generators do |g|
-    #     g.orm             :datamapper, :migration => true
-    #     g.template_engine :haml
-    #     g.test_framework  :rspec
-    #   end
-    #
-    # If you want to disable color in console, do:
-    #
-    #   config.generators.colorize_logging = false
-    #
-    def generators
-      @generators ||= Generators.new
-      if block_given?
-        yield @generators
-      else
-        @generators
+      def options
+        @@options ||= Hash.new { |h,k| h[k] = ActiveSupport::OrderedOptions.new }
       end
     end
 
-    # Allow Notifications queue to be modified or add subscriptions:
-    #
-    #   config.notifications.queue = MyNewQueue.new
-    #
-    #   config.notifications.subscribe /action_dispatch.show_exception/ do |*args|
-    #     ExceptionDeliver.deliver_exception(args)
-    #   end
-    #
-    def notifications
-      ActiveSupport::Notifications
-    end
-
     class Generators #:nodoc:
       attr_accessor :aliases, :options, :colorize_logging
 
@@ -319,5 +107,74 @@ module Rails
         end
       end
     end
+
+    module Deprecated
+      def frameworks(*args)
+        raise "config.frameworks in no longer supported. See the generated " \
+              "config/boot.rb for steps on how to limit the frameworks that " \
+              "will be loaded"
+      end
+      alias :frameworks= :frameworks
+
+      def view_path=(value)
+        ActiveSupport::Deprecation.warn "config.view_path= is deprecated, " <<
+          "please do config.paths.app.views= instead", caller
+        paths.app.views = value
+      end
+
+      def view_path
+        ActiveSupport::Deprecation.warn "config.view_path is deprecated, " <<
+          "please do config.paths.app.views instead", caller
+        paths.app.views.to_a.first
+      end
+
+      def routes_configuration_file=(value)
+        ActiveSupport::Deprecation.warn "config.routes_configuration_file= is deprecated, " <<
+          "please do config.paths.config.routes= instead", caller
+        paths.config.routes = value
+      end
+
+      def routes_configuration_file
+        ActiveSupport::Deprecation.warn "config.routes_configuration_file is deprecated, " <<
+          "please do config.paths.config.routes instead", caller
+        paths.config.routes.to_a.first
+      end
+
+      def database_configuration_file=(value)
+        ActiveSupport::Deprecation.warn "config.database_configuration_file= is deprecated, " <<
+          "please do config.paths.config.database= instead", caller
+        paths.config.database = value
+      end
+
+      def database_configuration_file
+        ActiveSupport::Deprecation.warn "config.database_configuration_file is deprecated, " <<
+          "please do config.paths.config.database instead", caller
+        paths.config.database.to_a.first
+      end
+
+      def log_path=(value)
+        ActiveSupport::Deprecation.warn "config.log_path= is deprecated, " <<
+          "please do config.paths.log= instead", caller
+        paths.config.log = value
+      end
+
+      def log_path
+        ActiveSupport::Deprecation.warn "config.log_path is deprecated, " <<
+          "please do config.paths.log instead", caller
+        paths.config.log.to_a.first
+      end
+
+      def controller_paths=(value)
+        ActiveSupport::Deprecation.warn "config.controller_paths= is deprecated, " <<
+          "please do config.paths.app.controllers= instead", caller
+        paths.app.controllers = value
+      end
+
+      def controller_paths
+        ActiveSupport::Deprecation.warn "config.controller_paths is deprecated, " <<
+          "please do config.paths.app.controllers instead", caller
+        paths.app.controllers.to_a.uniq
+      end
+    end
   end
 end
diff --git a/railties/lib/rails/console_app.rb b/railties/lib/rails/console/app.rb
index 2c4a7a51e8..7e8fd027e6 100644
--- a/railties/lib/rails/console_app.rb
+++ b/railties/lib/rails/console/app.rb
@@ -23,10 +23,11 @@ def new_session
   session
 end
 
-#reloads the environment
-def reload!
-  puts "Reloading..."
-  ActionDispatch::Callbacks.new(lambda {}, true)
-  Rails.application.reload_routes!
+# reloads the environment
+def reload!(print=true)
+  puts "Reloading..." if print
+  ActionDispatch::Callbacks.new(lambda {}, false)
   true
 end
+
+reload!(false)
diff --git a/railties/lib/rails/console_with_helpers.rb b/railties/lib/rails/console/helpers.rb
index 039db667c4..039db667c4 100644
--- a/railties/lib/rails/console_with_helpers.rb
+++ b/railties/lib/rails/console/helpers.rb
diff --git a/railties/lib/rails/console_sandbox.rb b/railties/lib/rails/console/sandbox.rb
index 65a3d68619..65a3d68619 100644
--- a/railties/lib/rails/console_sandbox.rb
+++ b/railties/lib/rails/console/sandbox.rb
diff --git a/railties/lib/rails/engine.rb b/railties/lib/rails/engine.rb
new file mode 100644
index 0000000000..e40052e0f1
--- /dev/null
+++ b/railties/lib/rails/engine.rb
@@ -0,0 +1,128 @@
+require 'active_support/core_ext/module/delegation'
+require 'rails/railtie'
+
+module Rails
+  class Engine < Railtie
+    autoload :Configurable,  "rails/engine/configurable"
+    autoload :Configuration, "rails/engine/configuration"
+
+    class << self
+      attr_accessor :called_from
+
+      alias :engine_name  :railtie_name
+      alias :engine_names :railtie_names
+
+      def inherited(base)
+        unless abstract_railtie?(base)
+          base.called_from = begin
+            call_stack = caller.map { |p| p.split(':').first }
+            File.dirname(call_stack.detect { |p| p !~ %r[railties/lib/rails|rack/lib/rack] })
+          end
+        end
+
+        super
+      end
+
+      def find_root_with_flag(flag, default=nil)
+        root_path = self.called_from
+
+        while root_path && File.directory?(root_path) && !File.exist?("#{root_path}/#{flag}")
+          parent = File.dirname(root_path)
+          root_path = parent != root_path && parent
+        end
+
+        root = File.exist?("#{root_path}/#{flag}") ? root_path : default
+        raise "Could not find root path for #{self}" unless root
+
+        RUBY_PLATFORM =~ /(:?mswin|mingw)/ ?
+          Pathname.new(root).expand_path : Pathname.new(root).realpath
+      end
+    end
+
+    delegate :middleware, :paths, :root, :to => :config
+
+    def load_tasks
+      super 
+      config.paths.lib.tasks.to_a.sort.each { |ext| load(ext) }
+    end
+
+    # Add configured load paths to ruby load paths and remove duplicates.
+    initializer :set_load_path do
+      config.load_paths.reverse_each do |path|
+        $LOAD_PATH.unshift(path) if File.directory?(path)
+      end
+      $LOAD_PATH.uniq!
+    end
+
+    # Set the paths from which Rails will automatically load source files,
+    # and the load_once paths.
+    initializer :set_autoload_paths do |app|
+      ActiveSupport::Dependencies.load_paths.concat(config.load_paths)
+
+      if reloadable?(app)
+        ActiveSupport::Dependencies.load_once_paths.concat(config.load_once_paths)
+      else
+        ActiveSupport::Dependencies.load_once_paths.concat(config.load_paths)
+      end
+
+      # Freeze so future modifications will fail rather than do nothing mysteriously
+      config.load_paths.freeze
+      config.load_once_paths.freeze
+    end
+
+    initializer :add_routing_paths do
+      paths.config.routes.to_a.each do |route|
+        Rails::Application::RoutesReloader.paths.unshift(route) if File.exists?(route)
+      end
+    end
+
+    initializer :add_routing_namespaces do |app|
+      paths.app.controllers.to_a.each do |load_path|
+        load_path = File.expand_path(load_path)
+        Dir["#{load_path}/*/*_controller.rb"].collect do |path|
+          namespace = File.dirname(path).sub(/#{load_path}\/?/, '')
+          app.routes.controller_namespaces << namespace unless namespace.empty?
+        end
+      end
+    end
+
+    initializer :add_locales do
+      config.i18n.load_path.unshift(*paths.config.locales.to_a)
+    end
+
+    initializer :add_view_paths do
+      views = paths.app.views.to_a
+      ActionController::Base.view_paths.concat(views) if defined?(ActionController)
+      ActionMailer::Base.view_paths.concat(views)     if defined?(ActionMailer)
+    end
+
+    initializer :add_metals do
+      Rails::Rack::Metal.paths.concat(paths.app.metals.to_a)
+    end
+
+    initializer :load_application_initializers do
+      paths.config.initializers.to_a.sort.each do |initializer|
+        load(initializer)
+      end
+    end
+
+    initializer :load_application_classes do |app|
+      next if $rails_rake_task
+
+      if app.config.cache_classes
+        config.eager_load_paths.each do |load_path|
+          matcher = /\A#{Regexp.escape(load_path)}\/(.*)\.rb\Z/
+          Dir.glob("#{load_path}/**/*.rb").sort.each do |file|
+            require_dependency file.sub(matcher, '\1')
+          end
+        end
+      end
+    end
+
+  protected
+
+    def reloadable?(app)
+      app.config.reload_plugins
+    end
+  end
+end
\ No newline at end of file
diff --git a/railties/lib/rails/engine/configurable.rb b/railties/lib/rails/engine/configurable.rb
new file mode 100644
index 0000000000..9a370f0abb
--- /dev/null
+++ b/railties/lib/rails/engine/configurable.rb
@@ -0,0 +1,25 @@
+module Rails
+  class Engine
+    module Configurable
+      def self.included(base)
+        base.extend ClassMethods
+      end
+
+      module ClassMethods
+        delegate :middleware, :root, :paths, :to => :config
+
+        def config
+          @config ||= Engine::Configuration.new(find_root_with_flag("lib"))
+        end
+
+        def inherited(base)
+          raise "You cannot inherit from a Rails::Engine child"
+        end
+      end
+
+      def config
+        self.class.config
+      end
+    end
+  end
+end
\ No newline at end of file
diff --git a/railties/lib/rails/engine/configuration.rb b/railties/lib/rails/engine/configuration.rb
new file mode 100644
index 0000000000..a328e14170
--- /dev/null
+++ b/railties/lib/rails/engine/configuration.rb
@@ -0,0 +1,49 @@
+require 'rails/railtie/configuration'
+
+module Rails
+  class Engine
+    class Configuration < ::Rails::Railtie::Configuration
+      attr_reader :root
+      attr_writer :eager_load_paths, :load_once_paths, :load_paths
+
+      def initialize(root=nil)
+        @root = root
+      end
+
+      def paths
+        @paths ||= begin
+          paths = Rails::Paths::Root.new(@root)
+          paths.app                 "app",                 :eager_load => true, :glob => "*"
+          paths.app.controllers     "app/controllers",     :eager_load => true
+          paths.app.helpers         "app/helpers",         :eager_load => true
+          paths.app.metals          "app/metal"
+          paths.app.views           "app/views"
+          paths.lib                 "lib",                 :load_path => true
+          paths.lib.tasks           "lib/tasks",           :glob => "**/*.rake"
+          paths.config              "config"
+          paths.config.environment  "config/environments", :glob => "#{Rails.env}.rb"
+          paths.config.initializers "config/initializers", :glob => "**/*.rb"
+          paths.config.locales      "config/locales",      :glob => "*.{rb,yml}"
+          paths.config.routes       "config/routes.rb"
+          paths
+        end
+      end
+
+      def root=(value)
+        @root = paths.path = Pathname.new(value).expand_path
+      end
+
+      def eager_load_paths
+        @eager_load_paths ||= paths.eager_load
+      end
+
+      def load_once_paths
+        @eager_load_paths ||= paths.load_once
+      end
+
+      def load_paths
+        @load_paths ||= paths.load_paths
+      end
+    end
+  end
+end
\ No newline at end of file
diff --git a/railties/lib/rails/initializable.rb b/railties/lib/rails/initializable.rb
index 8fcb254590..cea4a0fdf7 100644
--- a/railties/lib/rails/initializable.rb
+++ b/railties/lib/rails/initializable.rb
@@ -19,12 +19,6 @@ module Rails
         @options[:after]
       end
 
-      def global
-        @options[:global]
-      end
-
-      alias global? global
-
       def run(*args)
         @context.instance_exec(*args, &block)
       end
@@ -71,7 +65,7 @@ module Rails
 
     def initializers
       @initializers ||= begin
-        initializers = self.class.initializers_for(:instance)
+        initializers = self.class.initializers_chain
         Collection.new(initializers.map { |i| i.bind(self) })
       end
     end
@@ -81,26 +75,23 @@ module Rails
         @initializers ||= []
       end
 
-      def initializers_for(scope = :global)
+      def initializers_chain
         initializers = Collection.new
         ancestors.reverse_each do |klass|
           next unless klass.respond_to?(:initializers)
-          initializers = initializers + klass.initializers.select { |i|
-            (scope == :global) == !!i.global?
-          }
+          initializers = initializers + klass.initializers
         end
         initializers
       end
 
       def initializer(name, opts = {}, &blk)
         raise ArgumentError, "A block must be passed when defining an initializer" unless blk
-        @initializers ||= []
-        @initializers << Initializer.new(name, nil, opts, &blk)
+        initializers << Initializer.new(name, nil, opts, &blk)
       end
 
       def run_initializers(*args)
         return if @ran
-        initializers_for(:global).each do |initializer|
+        initializers_chain.each do |initializer|
           instance_exec(*args, &initializer.block)
         end
         @ran = true
diff --git a/railties/lib/rails/paths.rb b/railties/lib/rails/paths.rb
index b3d105d8c7..55874813da 100644
--- a/railties/lib/rails/paths.rb
+++ b/railties/lib/rails/paths.rb
@@ -1,7 +1,7 @@
 require 'set'
 
 module Rails
-  class Application
+  module Paths
     module PathParent
       def method_missing(id, *args)
         name = id.to_s
@@ -31,27 +31,21 @@ module Rails
         @all_paths = []
       end
 
-      def load_once
-        all_paths.map { |path| path.paths if path.load_once? }.compact.flatten.uniq
-      end
-
-      def eager_load
-        all_paths.map { |path| path.paths if path.eager_load? }.compact.flatten.uniq
-      end
-
       def all_paths
         @all_paths.uniq!
         @all_paths
       end
 
-      def load_paths
-        all_paths.map { |path| path.paths if path.load_path? }.compact.flatten.uniq
+      def load_once
+        filter { |path| path.paths if path.load_once? }
       end
 
-      def add_to_load_path
-        load_paths.reverse_each do |path|
-          $LOAD_PATH.unshift(path) if File.directory?(path)
-        end
+      def eager_load
+        filter { |path| path.paths if path.eager_load? }
+      end
+
+      def load_paths
+        filter { |path| path.paths if path.load_path? }
       end
 
       def push(*)
@@ -61,6 +55,12 @@ module Rails
       alias unshift push
       alias << push
       alias concat push
+
+    protected
+
+      def filter(&block)
+        all_paths.map(&block).compact.flatten.uniq.select { |p| File.exists?(p) }
+      end
     end
 
     class Path
@@ -74,11 +74,11 @@ module Rails
         @children = {}
         @root     = root
         @paths    = paths.flatten
-        @glob     = @options[:glob] || "**/*.rb"
+        @glob     = @options.delete(:glob)
 
         @load_once  = @options[:load_once]
         @eager_load = @options[:eager_load]
-        @load_path  = @options[:load_path] || @eager_load
+        @load_path  = @options[:load_path] || @eager_load || @load_once
 
         @root.all_paths << self
       end
@@ -103,6 +103,7 @@ module Rails
 
       def load_once!
         @load_once = true
+        @load_path = true
       end
 
       def load_once?
@@ -128,10 +129,13 @@ module Rails
 
       def paths
         raise "You need to set a path root" unless @root.path
-
-        @paths.map do |path|
-          path.index('/') == 0 ? path : File.expand_path(File.join(@root.path, path))
+        result = @paths.map do |p|
+          path = File.expand_path(p, @root.path)
+          @glob ? Dir[File.join(path, @glob)] : path
         end
+        result.flatten!
+        result.uniq!
+        result
       end
 
       alias to_a paths
diff --git a/railties/lib/rails/plugin.rb b/railties/lib/rails/plugin.rb
index c3b81bcd3e..4c73809177 100644
--- a/railties/lib/rails/plugin.rb
+++ b/railties/lib/rails/plugin.rb
@@ -1,5 +1,11 @@
+require 'rails/engine'
+
 module Rails
-  class Plugin < Railtie
+  class Plugin < Engine
+    def self.inherited(base)
+      raise "You cannot inherit from Rails::Plugin"
+    end
+
     def self.all(list, paths)
       plugins = []
       paths.each do |path|
@@ -17,52 +23,35 @@ module Rails
 
     attr_reader :name, :path
 
-    def initialize(path)
-      @name = File.basename(path).to_sym
-      @path = path
-    end
+    def load_tasks
+      super
+      extra_tasks = Dir["#{root}/{tasks,rails/tasks}/**/*.rake"]
 
-    def load_paths
-      Dir["#{path}/{lib}", "#{path}/app/{models,controllers,helpers}"]
+      unless extra_tasks.empty?
+        ActiveSupport::Deprecation.warn "Having rake tasks in PLUGIN_PATH/tasks or " <<
+          "PLUGIN_PATH/rails/tasks is deprecated. Use to PLUGIN_PATH/lib/tasks instead"
+        extra_tasks.sort.each { |ext| load(ext) }
+      end
     end
 
-    def load_tasks
-      Dir["#{path}/{tasks,lib/tasks,rails/tasks}/**/*.rake"].sort.each { |ext| load ext }
+    def initialize(root)
+      @name = File.basename(root).to_sym
+      config.root = root
     end
 
-    initializer :add_to_load_path, :after => :set_autoload_paths do |app|
-      load_paths.each do |path|
-        $LOAD_PATH << path
-        require "active_support/dependencies"
-
-        ActiveSupport::Dependencies.load_paths << path
-
-        unless app.config.reload_plugins
-          ActiveSupport::Dependencies.load_once_paths << path
-        end
-      end
+    def config
+      @config ||= Engine::Configuration.new
     end
 
-    initializer :load_init_rb, :before => :load_application_initializers do |app|
-      file   = "#{@path}/init.rb"
+    initializer :load_init_rb do |app|
+      file   = Dir["#{root}/{rails/init,init}.rb"].first
       config = app.config
-      eval File.read(file), binding, file if File.file?(file)
-    end
-
-    initializer :add_view_paths, :after => :initialize_framework_views do
-      plugin_views = "#{path}/app/views"
-      if File.directory?(plugin_views)
-        ActionController::Base.view_paths.concat([plugin_views]) if defined? ActionController
-        ActionMailer::Base.view_paths.concat([plugin_views])     if defined? ActionMailer
-      end
+      eval(File.read(file), binding, file) if file && File.file?(file)
     end
 
-    # TODO Isn't it supposed to be :after => "action_controller.initialize_routing" ?
-    initializer :add_routing_file, :after => :initialize_routing do |app|
-      routing_file = "#{path}/config/routes.rb"
-      if File.exist?(routing_file)
-        app.route_configuration_files << routing_file
-        app.reload_routes!
+    initializer :sanity_check_railties_collision do
+      if Engine.subclasses.map { |k| k.root.to_s }.include?(root.to_s)
+        raise "\"#{name}\" is a Railtie/Engine and cannot be installed as plugin"
       end
     end
   end
diff --git a/railties/lib/rails/rack/metal.rb b/railties/lib/rails/rack/metal.rb
index 565f95d7c4..732936da32 100644
--- a/railties/lib/rails/rack/metal.rb
+++ b/railties/lib/rails/rack/metal.rb
@@ -3,14 +3,29 @@ require 'action_dispatch'
 module Rails
   module Rack
     class Metal
-      def initialize(metal_roots, metals=nil)
-        load_list = metals || Dir["{#{metal_roots.join(",")}}/**/*.rb"]
+      def self.paths
+        @paths ||= []
+      end
+
+      def initialize(list=nil)
+        metals = []
+        list   = Array(list || :all).map(&:to_sym)
+
+        self.class.paths.each do |path|
+          matcher = /\A#{Regexp.escape(path)}\/(.*)\.rb\Z/
+          Dir.glob("#{path}/**/*.rb").sort.each do |metal_path|
+            metal = metal_path.sub(matcher, '\1').to_sym
+            next unless list.include?(metal) || list.include?(:all)
+            require_dependency metal
+            metals << metal
+          end
+        end
+
+        metals = metals.sort_by do |m|
+          [list.index(m) || list.index(:all), m.to_s]
+        end
 
-        @metals = load_list.map { |metal|
-          metal = File.basename(metal, '.rb')
-          require_dependency metal
-          metal.camelize.constantize
-        }.compact
+        @metals = metals.map { |m| m.to_s.camelize.constantize }
       end
 
       def new(app)
diff --git a/railties/lib/rails/railtie.rb b/railties/lib/rails/railtie.rb
index e3297148e5..3cf358d75f 100644
--- a/railties/lib/rails/railtie.rb
+++ b/railties/lib/rails/railtie.rb
@@ -1,44 +1,66 @@
+require 'rails/initializable'
+require 'rails/configuration'
+
 module Rails
   class Railtie
+    autoload :Configurable,  "rails/railtie/configurable"
+    autoload :Configuration, "rails/railtie/configuration"
+
     include Initializable
 
-    def self.plugin_name(plugin_name = nil)
-      @plugin_name ||= name.demodulize.underscore
-      @plugin_name = plugin_name if plugin_name
-      @plugin_name
-    end
+    ABSTRACT_RAILTIES = %w(Rails::Plugin Rails::Engine Rails::Application)
 
-    def self.inherited(klass)
-      @plugins ||= []
-      @plugins << klass unless klass == Plugin
-    end
+    class << self
+      def subclasses
+        @subclasses ||= []
+      end
 
-    def self.plugins
-      @plugins
-    end
+      def inherited(base)
+        unless abstract_railtie?(base)
+          base.send(:include, self::Configurable) if add_configurable?(base)
+          subclasses << base
+        end
+      end
 
-    def self.plugin_names
-      plugins.map { |p| p.plugin_name }
-    end
+      def railtie_name(railtie_name = nil)
+        @railtie_name ||= name.demodulize.underscore
+        @railtie_name = railtie_name if railtie_name
+        @railtie_name
+      end
 
-    def self.config
-      Configuration.default
-    end
+      def railtie_names
+        subclasses.map { |p| p.railtie_name }
+      end
 
-    def self.subscriber(subscriber)
-      Rails::Subscriber.add(plugin_name, subscriber)
-    end
+      def subscriber(subscriber)
+        Rails::Subscriber.add(railtie_name, subscriber)
+      end
 
-    def self.rake_tasks(&blk)
-      @rake_tasks ||= []
-      @rake_tasks << blk if blk
-      @rake_tasks
-    end
+      def rake_tasks(&blk)
+        @rake_tasks ||= []
+        @rake_tasks << blk if blk
+        @rake_tasks
+      end
+
+      def generators(&blk)
+        @generators ||= []
+        @generators << blk if blk
+        @generators
+      end
+
+    protected
+
+      def abstract_railtie?(base)
+        ABSTRACT_RAILTIES.include?(base.name)
+      end
 
-    def self.generators(&blk)
-      @generators ||= []
-      @generators << blk if blk
-      @generators
+      # Just add configurable behavior if a Configurable module is defined
+      # and the class is a direct child from self. This is required to avoid
+      # application or plugins getting class configuration method from Railties
+      # and/or Engines.
+      def add_configurable?(base)
+        defined?(self::Configurable) && base.ancestors[1] == self
+      end
     end
 
     def rake_tasks
@@ -50,12 +72,10 @@ module Rails
     end
 
     def load_tasks
-      return unless rake_tasks
       rake_tasks.each { |blk| blk.call }
     end
 
     def load_generators
-      return unless generators
       generators.each { |blk| blk.call }
     end
   end
diff --git a/railties/lib/rails/railtie/configurable.rb b/railties/lib/rails/railtie/configurable.rb
new file mode 100644
index 0000000000..a2eb938c5a
--- /dev/null
+++ b/railties/lib/rails/railtie/configurable.rb
@@ -0,0 +1,23 @@
+module Rails
+  class Railtie
+    module Configurable
+      def self.included(base)
+        base.extend ClassMethods
+      end
+
+      module ClassMethods
+        def config
+          @config ||= Railtie::Configuration.new
+        end
+
+        def inherited(base)
+          raise "You cannot inherit from a Rails::Railtie child"
+        end
+      end
+
+      def config
+        self.class.config
+      end
+    end
+  end
+end
diff --git a/railties/lib/rails/railtie/configuration.rb b/railties/lib/rails/railtie/configuration.rb
new file mode 100644
index 0000000000..bfb43f7041
--- /dev/null
+++ b/railties/lib/rails/railtie/configuration.rb
@@ -0,0 +1,9 @@
+require 'rails/configuration'
+
+module Rails
+  class Railtie
+    class Configuration
+      include Rails::Configuration::Shared
+    end
+  end
+end
\ No newline at end of file
diff --git a/railties/lib/rails/tasks/documentation.rake b/railties/lib/rails/tasks/documentation.rake
index 65d0d476ba..3f49a9a720 100644
--- a/railties/lib/rails/tasks/documentation.rake
+++ b/railties/lib/rails/tasks/documentation.rake
@@ -11,35 +11,43 @@ namespace :doc do
     rdoc.rdoc_files.include('lib/**/*.rb')
   }
 
-  desc "Generate documentation for the Rails framework"
+  desc 'Generate documentation for the Rails framework. Specify path with PATH="/path/to/rails"'
   Rake::RDocTask.new("rails") { |rdoc|
+    path = ENV['RAILS_PATH'] || 'vendor/gems/gems'
+    version = '-3.0.pre' unless ENV['RAILS_PATH']
     rdoc.rdoc_dir = 'doc/api'
     rdoc.template = "#{ENV['template']}.rb" if ENV['template']
     rdoc.title    = "Rails Framework Documentation"
     rdoc.options << '--line-numbers' << '--inline-source'
     rdoc.rdoc_files.include('README')
-    rdoc.rdoc_files.include('vendor/rails/railties/CHANGELOG')
-    rdoc.rdoc_files.include('vendor/rails/railties/MIT-LICENSE')
-    rdoc.rdoc_files.include('vendor/rails/railties/README')
-    rdoc.rdoc_files.include('vendor/rails/railties/lib/{*.rb,commands/*.rb,generators/*.rb}')
-    rdoc.rdoc_files.include('vendor/rails/activerecord/README')
-    rdoc.rdoc_files.include('vendor/rails/activerecord/CHANGELOG')
-    rdoc.rdoc_files.include('vendor/rails/activerecord/lib/active_record/**/*.rb')
-    rdoc.rdoc_files.exclude('vendor/rails/activerecord/lib/active_record/vendor/*')
-    rdoc.rdoc_files.include('vendor/rails/activeresource/README')
-    rdoc.rdoc_files.include('vendor/rails/activeresource/CHANGELOG')
-    rdoc.rdoc_files.include('vendor/rails/activeresource/lib/active_resource.rb')
-    rdoc.rdoc_files.include('vendor/rails/activeresource/lib/active_resource/*')
-    rdoc.rdoc_files.include('vendor/rails/actionpack/README')
-    rdoc.rdoc_files.include('vendor/rails/actionpack/CHANGELOG')
-    rdoc.rdoc_files.include('vendor/rails/actionpack/lib/action_controller/**/*.rb')
-    rdoc.rdoc_files.include('vendor/rails/actionpack/lib/action_view/**/*.rb')
-    rdoc.rdoc_files.include('vendor/rails/actionmailer/README')
-    rdoc.rdoc_files.include('vendor/rails/actionmailer/CHANGELOG')
-    rdoc.rdoc_files.include('vendor/rails/actionmailer/lib/action_mailer/base.rb')
-    rdoc.rdoc_files.include('vendor/rails/activesupport/README')
-    rdoc.rdoc_files.include('vendor/rails/activesupport/CHANGELOG')
-    rdoc.rdoc_files.include('vendor/rails/activesupport/lib/active_support/**/*.rb')
+
+    %w(README CHANGELOG lib/action_mailer/base.rb).each do |file|
+      rdoc.rdoc_files.include("#{path}/actionmailer#{version}/#{file}")
+    end
+
+    %w(README CHANGELOG lib/action_controller/**/*.rb lib/action_view/**/*.rb).each do |file|
+      rdoc.rdoc_files.include("#{path}/actionpack#{version}/#{file}")
+    end
+
+    %w(README CHANGELOG lib/active_model/**/*.rb).each do |file|
+      rdoc.rdoc_files.include("#{path}/activemodel#{version}/#{file}")
+    end
+
+    %w(README CHANGELOG lib/active_record/**/*.rb).each do |file|
+      rdoc.rdoc_files.include("#{path}/activerecord#{version}/#{file}")
+    end
+
+    %w(README CHANGELOG lib/active_resource.rb lib/active_resource/*).each do |file|
+      rdoc.rdoc_files.include("#{path}/activeresource#{version}/#{file}")
+    end
+
+    %w(README CHANGELOG lib/active_support/**/*.rb).each do |file|
+      rdoc.rdoc_files.include("#{path}/activesupport#{version}/#{file}")
+    end
+
+    %w(README CHANGELOG MIT-LICENSE lib/{*.rb,commands/*.rb,generators/*.rb}).each do |file|
+      rdoc.rdoc_files.include("#{path}/railties#{version}/#{file}")
+    end
   }
 
   plugins = FileList['vendor/plugins/**'].collect { |plugin| File.basename(plugin) }
diff --git a/railties/lib/rails/tasks/middleware.rake b/railties/lib/rails/tasks/middleware.rake
index 5a5bd7a7e9..c3aaddb153 100644
--- a/railties/lib/rails/tasks/middleware.rake
+++ b/railties/lib/rails/tasks/middleware.rake
@@ -3,5 +3,5 @@ task :middleware => :environment do
   Rails.configuration.middleware.active.each do |middleware|
     puts "use #{middleware.inspect}"
   end
-  puts "run #{Rails.application.class.name}"
+  puts "run #{Rails::Application.class.name}"
 end
diff --git a/railties/lib/rails/tasks/routes.rake b/railties/lib/rails/tasks/routes.rake
index 2395d73b2f..e8da72db4d 100644
--- a/railties/lib/rails/tasks/routes.rake
+++ b/railties/lib/rails/tasks/routes.rake
@@ -1,5 +1,6 @@
 desc 'Print out all defined routes in match order, with names. Target specific controller with CONTROLLER=x.'
 task :routes => :environment do
+  Rails::Application.reload_routes!
   all_routes = ENV['CONTROLLER'] ? ActionController::Routing::Routes.routes.select { |route| route.defaults[:controller] == ENV['CONTROLLER'] } : ActionController::Routing::Routes.routes
   routes = all_routes.collect do |route|
     name = ActionController::Routing::Routes.named_routes.routes.index(route).to_s
diff --git a/railties/test/application/console_test.rb b/railties/test/application/console_test.rb
index e8a4a4e158..22ab60f4a0 100644
--- a/railties/test/application/console_test.rb
+++ b/railties/test/application/console_test.rb
@@ -9,8 +9,8 @@ class ConsoleTest < Test::Unit::TestCase
 
     # Load steps taken from rails/commands/console.rb
     require "#{rails_root}/config/environment"
-    require 'rails/console_app'
-    require 'rails/console_with_helpers'
+    require 'rails/console/app'
+    require 'rails/console/helpers'
   end
 
   def test_app_method_should_return_integration_session
diff --git a/railties/test/application/initializer_test.rb b/railties/test/application/initializer_test.rb
index 754c0f1839..053757979b 100644
--- a/railties/test/application/initializer_test.rb
+++ b/railties/test/application/initializer_test.rb
@@ -29,7 +29,7 @@ module ApplicationTests
 
       add_to_config <<-RUBY
         config.root = "#{app_path}"
-        config.eager_load_paths = "#{app_path}/lib"
+        config.eager_load_paths << "#{app_path}/lib"
       RUBY
 
       require "#{app_path}/config/environment"
@@ -38,13 +38,24 @@ module ApplicationTests
     end
 
     test "load environment with global" do
-      app_file "config/environments/development.rb", "$initialize_test_set_from_env = 'success'"
+      app_file "config/environments/development.rb", <<-RUBY
+        $initialize_test_set_from_env = 'success'
+        AppTemplate::Application.configure do
+          config.cache_classes = true
+          config.time_zone = "Brasilia"
+        end
+      RUBY
+
       assert_nil $initialize_test_set_from_env
       add_to_config <<-RUBY
         config.root = "#{app_path}"
+          config.time_zone = "UTC"
       RUBY
+
       require "#{app_path}/config/environment"
       assert_equal "success", $initialize_test_set_from_env
+      assert AppTemplate::Application.config.cache_classes
+      assert_equal "Brasilia", AppTemplate::Application.config.time_zone
     end
 
     test "action_controller load paths set only if action controller in use" do
diff --git a/railties/test/application/notifications_test.rb b/railties/test/application/notifications_test.rb
index db8605edbe..061bb34c19 100644
--- a/railties/test/application/notifications_test.rb
+++ b/railties/test/application/notifications_test.rb
@@ -1,17 +1,6 @@
 require "isolation/abstract_unit"
 
 module ApplicationTests
-  class MyQueue
-    def publish(name, *args)
-      raise name
-    end
-
-    # Not a full queue implementation
-    def method_missing(name, *args, &blk)
-      self
-    end
-  end
-
   class MockLogger
     def method_missing(*args)
       @logged ||= []
@@ -39,22 +28,6 @@ module ApplicationTests
       ActiveSupport::Notifications.notifier.wait
     end
 
-    test "new queue is set" do
-      # We don't want to load all frameworks, so remove them and clean up environments.
-      use_frameworks []
-      FileUtils.rm_rf("#{app_path}/config/environments")
-
-      add_to_config <<-RUBY
-        config.notifications.notifier = ActiveSupport::Notifications::Notifier.new(ApplicationTests::MyQueue.new)
-      RUBY
-
-      require "#{app_path}/config/environment"
-
-      assert_raise RuntimeError do
-        ActiveSupport::Notifications.publish('foo')
-      end
-    end
-
     test "rails subscribers are added" do
       add_to_config <<-RUBY
         config.colorize_logging = false
diff --git a/railties/test/generators/plugin_generator_test.rb b/railties/test/generators/plugin_generator_test.rb
index 0a79e2cfb8..065dbe1423 100644
--- a/railties/test/generators/plugin_generator_test.rb
+++ b/railties/test/generators/plugin_generator_test.rb
@@ -48,7 +48,7 @@ class PluginGeneratorTest < Rails::Generators::TestCase
 
   def test_creates_tasks_if_required
     run_generator ["plugin_fu", "--tasks"]
-    assert_file "vendor/plugins/plugin_fu/tasks/plugin_fu_tasks.rake"
+    assert_file "vendor/plugins/plugin_fu/lib/tasks/plugin_fu_tasks.rake"
   end
 
   def test_creates_generator_if_required
diff --git a/railties/test/initializable_test.rb b/railties/test/initializable_test.rb
index e308cbcb0e..0c7378cb64 100644
--- a/railties/test/initializable_test.rb
+++ b/railties/test/initializable_test.rb
@@ -10,14 +10,14 @@ module InitializableTests
       attr_accessor :foo, :bar
     end
 
-    initializer :omg, :global => true do
+    initializer :omg do
       @foo ||= 0
       @foo += 1
     end
   end
 
   class Bar < Foo
-    initializer :bar, :global => true do
+    initializer :bar do
       @bar ||= 0
       @bar += 1
     end
@@ -26,7 +26,7 @@ module InitializableTests
   module Word
     include Rails::Initializable
 
-    initializer :word, :global => true do
+    initializer :word do
       $word = "bird"
     end
   end
@@ -34,11 +34,11 @@ module InitializableTests
   class Parent
     include Rails::Initializable
 
-    initializer :one, :global => true do
+    initializer :one do
       $arr << 1
     end
 
-    initializer :two, :global => true do
+    initializer :two do
       $arr << 2
     end
   end
@@ -46,17 +46,17 @@ module InitializableTests
   class Child < Parent
     include Rails::Initializable
 
-    initializer :three, :before => :one, :global => true do
+    initializer :three, :before => :one do
       $arr << 3
     end
 
-    initializer :four, :after => :one, :global => true do
+    initializer :four, :after => :one do
       $arr << 4
     end
   end
 
   class Parent
-    initializer :five, :before => :one, :global => true do
+    initializer :five, :before => :one do
       $arr << 5
     end
   end
@@ -72,11 +72,11 @@ module InitializableTests
       $arr << 2
     end
 
-    initializer :three, :global => true do
+    initializer :three do
       $arr << 3
     end
 
-    initializer :four, :global => true do
+    initializer :four do
       $arr << 4
     end
   end
@@ -181,13 +181,7 @@ module InitializableTests
       $arr = []
       instance = Instance.new
       instance.run_initializers
-      assert_equal [1, 2], $arr
-    end
-
-    test "running globals" do
-      $arr = []
-      Instance.run_initializers
-      assert_equal [3, 4], $arr
+      assert_equal [1, 2, 3, 4], $arr
     end
   end
 
diff --git a/railties/test/initializer/initialize_i18n_test.rb b/railties/test/initializer/initialize_i18n_test.rb
deleted file mode 100644
index 472566378d..0000000000
--- a/railties/test/initializer/initialize_i18n_test.rb
+++ /dev/null
@@ -1,55 +0,0 @@
-require "isolation/abstract_unit"
-
-module InitializerTests
-  class InitializeI18nTest < Test::Unit::TestCase
-    include ActiveSupport::Testing::Isolation
-
-    def setup
-      build_app
-      boot_rails
-    end
-
-    # test_config_defaults_and_settings_should_be_added_to_i18n_defaults
-    test "i18n config defaults and settings should be added to i18n defaults" do
-      add_to_config <<-RUBY
-        config.root = "#{app_path}"
-        config.i18n.load_path << "my/other/locale.yml"
-      RUBY
-      require "#{app_path}/config/environment"
-
-      #{RAILS_FRAMEWORK_ROOT}/railties/test/fixtures/plugins/engines/engine/config/locales/en.yml
-      assert_equal %W(
-        #{RAILS_FRAMEWORK_ROOT}/activesupport/lib/active_support/locale/en.yml
-        #{RAILS_FRAMEWORK_ROOT}/activemodel/lib/active_model/locale/en.yml
-        #{RAILS_FRAMEWORK_ROOT}/activerecord/lib/active_record/locale/en.yml
-        #{RAILS_FRAMEWORK_ROOT}/actionpack/lib/action_view/locale/en.yml
-        #{RAILS_FRAMEWORK_ROOT}/railties/tmp/app/config/locales/en.yml
-        my/other/locale.yml
-      ).map { |path| File.expand_path(path) }, I18n.load_path.map { |path| File.expand_path(path) }
-    end
-
-    test "i18n finds locale files in engines" do
-      # app_file "vendor/plugins/engine/init.rb",               ""
-      # app_file "vendor/plugins/engine/app/models/hellos.rb",  "class Hello ; end"
-      # app_file "vendor/plugins/engine/lib/omg.rb",            "puts 'omg'"
-      # app_file "vendor/plugins/engine/config/locales/en.yml", "hello:"
-      #
-      # Rails::Initializer.run do |c|
-      #   c.root = app_path
-      #   c.i18n.load_path << "my/other/locale.yml"
-      # end
-      # Rails.initialize!
-      #
-      # #{RAILS_FRAMEWORK_ROOT}/railties/test/fixtures/plugins/engines/engine/config/locales/en.yml
-      # assert_equal %W(
-      #   #{RAILS_FRAMEWORK_ROOT}/activesupport/lib/active_support/locale/en.yml
-      #   #{RAILS_FRAMEWORK_ROOT}/activemodel/lib/active_model/locale/en.yml
-      #   #{RAILS_FRAMEWORK_ROOT}/activerecord/lib/active_record/locale/en.yml
-      #   #{RAILS_FRAMEWORK_ROOT}/actionpack/lib/action_view/locale/en.yml
-      #   #{app_path}/config/locales/en.yml
-      #   my/other/locale.yml
-      #   #{app_path}/vendor/plugins/engine/config/locales/en.yml
-      # ).map { |path| File.expand_path(path) }, I18n.load_path.map { |path| File.expand_path(path) }
-    end
-  end
-end
\ No newline at end of file
diff --git a/railties/test/initializer/path_test.rb b/railties/test/initializer/path_test.rb
index 328dda6d2c..7a40d7fa6e 100644
--- a/railties/test/initializer/path_test.rb
+++ b/railties/test/initializer/path_test.rb
@@ -8,6 +8,7 @@ module InitializerTests
       build_app
       boot_rails
       FileUtils.rm_rf("#{app_path}/config/environments")
+      app_file "config/environments/development.rb", ""
       add_to_config <<-RUBY
         config.root = "#{app_path}"
         config.after_initialize do
@@ -36,19 +37,17 @@ module InitializerTests
     end
 
     test "booting up Rails yields a valid paths object" do
-      assert_path @paths.app, "app"
       assert_path @paths.app.metals, "app", "metal"
-      assert_path @paths.app.models, "app", "models"
       assert_path @paths.app.helpers, "app", "helpers"
-      assert_path @paths.app.services, "app", "services"
+      assert_path @paths.app.views, "app", "views"
       assert_path @paths.lib, "lib"
       assert_path @paths.vendor, "vendor"
       assert_path @paths.vendor.plugins, "vendor", "plugins"
       assert_path @paths.tmp, "tmp"
       assert_path @paths.tmp.cache, "tmp", "cache"
       assert_path @paths.config, "config"
-      assert_path @paths.config.locales, "config", "locales"
-      assert_path @paths.config.environments, "config", "environments"
+      assert_path @paths.config.locales, "config", "locales", "en.yml"
+      assert_path @paths.config.environment, "config", "environments", "development.rb"
 
       assert_equal root("app", "controllers"), @paths.app.controllers.to_a.first
       assert_equal Pathname.new(File.dirname(__FILE__)).join("..", "..", "builtin", "rails_info").expand_path,
@@ -56,27 +55,23 @@ module InitializerTests
     end
 
     test "booting up Rails yields a list of paths that are eager" do
-      assert @paths.app.models.eager_load?
+      assert @paths.app.eager_load?
       assert @paths.app.controllers.eager_load?
       assert @paths.app.helpers.eager_load?
-      assert @paths.app.metals.eager_load?
     end
 
     test "environments has a glob equal to the current environment" do
-      assert_equal "#{Rails.env}.rb", @paths.config.environments.glob
+      assert_equal "#{Rails.env}.rb", @paths.config.environment.glob
     end
 
     test "load path includes each of the paths in config.paths as long as the directories exist" do
-      assert_in_load_path "app"
       assert_in_load_path "app", "controllers"
       assert_in_load_path "app", "models"
       assert_in_load_path "app", "helpers"
       assert_in_load_path "lib"
       assert_in_load_path "vendor"
 
-      assert_not_in_load_path "app", "views"
       assert_not_in_load_path "app", "metal"
-      assert_not_in_load_path "app", "services"
       assert_not_in_load_path "config"
       assert_not_in_load_path "config", "locales"
       assert_not_in_load_path "config", "environments"
@@ -86,17 +81,17 @@ module InitializerTests
 
     test "controller paths include builtin in development mode" do
       Rails.env.replace "development"
-      assert Rails::Configuration.new.paths.app.controllers.paths.any? { |p| p =~ /builtin/ }
+      assert Rails::Application::Configuration.new("/").paths.app.controllers.paths.any? { |p| p =~ /builtin/ }
     end
 
     test "controller paths does not have builtin_directories in test mode" do
       Rails.env.replace "test"
-      assert !Rails::Configuration.new.paths.app.controllers.paths.any? { |p| p =~ /builtin/ }
+      assert !Rails::Application::Configuration.new("/").paths.app.controllers.paths.any? { |p| p =~ /builtin/ }
     end
 
     test "controller paths does not have builtin_directories in production mode" do
       Rails.env.replace "production"
-      assert !Rails::Configuration.new.paths.app.controllers.paths.any? { |p| p =~ /builtin/ }
+      assert !Rails::Application::Configuration.new("/").paths.app.controllers.paths.any? { |p| p =~ /builtin/ }
     end
 
   end
diff --git a/railties/test/paths_test.rb b/railties/test/paths_test.rb
index d60d6177f6..92c7b2ba0e 100644
--- a/railties/test/paths_test.rb
+++ b/railties/test/paths_test.rb
@@ -3,22 +3,23 @@ require 'rails/paths'
 
 class PathsTest < ActiveSupport::TestCase
   def setup
-    @root = Rails::Application::Root.new("/foo/bar")
+    File.stubs(:exists?).returns(true)
+    @root = Rails::Paths::Root.new("/foo/bar")
   end
 
   test "the paths object is initialized with the root path" do
-    root = Rails::Application::Root.new("/fiz/baz")
+    root = Rails::Paths::Root.new("/fiz/baz")
     assert_equal "/fiz/baz", root.path
   end
 
   test "the paths object can be initialized with nil" do
     assert_nothing_raised do
-      Rails::Application::Root.new(nil)
+      Rails::Paths::Root.new(nil)
     end
   end
 
   test "a paths object initialized with nil can be updated" do
-    root = Rails::Application::Root.new(nil)
+    root = Rails::Paths::Root.new(nil)
     root.app = "app"
     root.path = "/root"
     assert_equal ["/root/app"], root.app.to_a
@@ -30,7 +31,7 @@ class PathsTest < ActiveSupport::TestCase
   end
 
   test "raises exception if root path never set" do
-    root = Rails::Application::Root.new(nil)
+    root = Rails::Paths::Root.new(nil)
     root.app = "app"
     assert_raises RuntimeError do
       root.app.to_a
@@ -110,7 +111,7 @@ class PathsTest < ActiveSupport::TestCase
   end
 
   test "the root can only have one physical path" do
-    assert_raise(RuntimeError) { Rails::Application::Root.new(["/fiz", "/biz"]) }
+    assert_raise(RuntimeError) { Rails::Paths::Root.new(["/fiz", "/biz"]) }
     assert_raise(RuntimeError) { @root.push "/biz"    }
     assert_raise(RuntimeError) { @root.unshift "/biz" }
     assert_raise(RuntimeError) { @root.concat ["/biz"]}
@@ -193,12 +194,7 @@ class PathsTest < ActiveSupport::TestCase
     assert_equal 2, @root.eager_load.size
   end
 
-  test "a path should have a glob that defaults to **/*.rb" do
-    @root.app = "/app"
-    assert_equal "**/*.rb", @root.app.glob
-  end
-
-  test "it should be possible to override a path's default glob" do
+  test "it should be possible to add a path's default glob" do
     @root.app = "/app"
     @root.app.glob = "*.rb"
     assert_equal "*.rb", @root.app.glob
@@ -227,4 +223,11 @@ class PathsTest < ActiveSupport::TestCase
     @root.app.eager_load!
     assert_equal ["/foo/bar/app"], @root.load_paths
   end
+
+  test "adding a path to the load once paths also adds it to the load path" do
+    @root.app = "app"
+    @root.app.load_once!
+    assert_equal ["/foo/bar/app"], @root.load_paths
+  end
+
 end
diff --git a/railties/test/plugins/configuration_test.rb b/railties/test/plugins/configuration_test.rb
index 09f8943af9..c59040c712 100644
--- a/railties/test/plugins/configuration_test.rb
+++ b/railties/test/plugins/configuration_test.rb
@@ -26,11 +26,11 @@ module PluginsTest
 
     test "plugin config merges are deep" do
       class Foo < Rails::Railtie ; config.foo.greetings = 'hello' ; end
-      class MyApp < Rails::Application
+      class Bar < Rails::Railtie
         config.foo.bar = "bar"
       end
-      assert_equal "hello", MyApp.config.foo.greetings
-      assert_equal "bar",   MyApp.config.foo.bar
+      assert_equal "hello", Bar.config.foo.greetings
+      assert_equal "bar",   Bar.config.foo.bar
     end
 
     test "plugin can add subscribers" do
diff --git a/railties/test/plugins/vendored_test.rb b/railties/test/plugins/vendored_test.rb
index b3b85891b2..05c01846e1 100644
--- a/railties/test/plugins/vendored_test.rb
+++ b/railties/test/plugins/vendored_test.rb
@@ -17,6 +17,10 @@ module PluginsTest
       require "#{app_path}/config/environment"
     end
 
+    def app
+      @app ||= Rails.application
+    end
+
     test "it loads the plugin's init.rb file" do
       boot_rails
       assert_equal "loaded", BUKKITS
@@ -145,6 +149,156 @@ module PluginsTest
       response = Rails.application.call(Rack::MockRequest.env_for("/sprokkit"))
       assert_equal "I am a Sprokkit", response[2].join
     end
+
+    test "tasks are loaded by default" do
+      $executed = false
+      @plugin.write "lib/tasks/foo.rake", <<-RUBY
+        task :foo do
+          $executed = true
+        end
+      RUBY
+
+      boot_rails
+      require 'rake'
+      require 'rake/rdoctask'
+      require 'rake/testtask'
+      Rails.application.load_tasks
+      Rake::Task[:foo].invoke
+      assert $executed
+    end
+
+    test "deprecated tasks are also loaded" do
+      $executed = false
+      @plugin.write "tasks/foo.rake", <<-RUBY
+        task :foo do
+          $executed = true
+        end
+      RUBY
+
+      boot_rails
+      require 'rake'
+      require 'rake/rdoctask'
+      require 'rake/testtask'
+      Rails.application.load_tasks
+      Rake::Task[:foo].invoke
+      assert $executed
+    end
+
+    test "i18n files are added with lower priority than application ones" do
+      add_to_config <<-RUBY
+        config.i18n.load_path << "#{app_path}/app/locales/en.yml"
+      RUBY
+
+      app_file 'app/locales/en.yml', <<-YAML
+en:
+  bar: "1"
+YAML
+
+      app_file 'config/locales/en.yml', <<-YAML
+en:
+  foo: "2"
+  bar: "2"
+YAML
+
+      @plugin.write 'config/locales/en.yml', <<-YAML
+en:
+  foo: "3"
+YAML
+
+      boot_rails
+
+      assert_equal %W(
+        #{RAILS_FRAMEWORK_ROOT}/activesupport/lib/active_support/locale/en.yml
+        #{RAILS_FRAMEWORK_ROOT}/activemodel/lib/active_model/locale/en.yml
+        #{RAILS_FRAMEWORK_ROOT}/activerecord/lib/active_record/locale/en.yml
+        #{RAILS_FRAMEWORK_ROOT}/actionpack/lib/action_view/locale/en.yml
+        #{app_path}/vendor/plugins/bukkits/config/locales/en.yml
+        #{app_path}/config/locales/en.yml
+        #{app_path}/app/locales/en.yml
+      ).map { |path| File.expand_path(path) }, I18n.load_path.map { |path| File.expand_path(path) }
+
+      assert_equal "2", I18n.t(:foo)
+      assert_equal "1", I18n.t(:bar)
+    end
+
+    test "plugin metals are added to the middleware stack" do
+      @plugin.write 'app/metal/foo_metal.rb', <<-RUBY
+        class FooMetal
+          def self.call(env)
+            [200, { "Content-Type" => "text/html"}, ["FooMetal"]]
+          end
+        end
+      RUBY
+
+      boot_rails
+      require 'rack/test'
+      extend Rack::Test::Methods
+
+      get "/"
+      assert_equal 200, last_response.status
+      assert_equal "FooMetal", last_response.body
+    end
+
+    test "namespaced controllers with namespaced routes" do
+      @plugin.write "config/routes.rb", <<-RUBY
+        ActionController::Routing::Routes.draw do
+          namespace :admin do
+            match "index", :to => "admin/foo#index"
+          end
+        end
+      RUBY
+
+      @plugin.write "app/controllers/admin/foo_controller.rb", <<-RUBY
+        class Admin::FooController < ApplicationController
+          def index
+            render :text => "Rendered from namespace"
+          end
+        end
+      RUBY
+
+      boot_rails
+
+      require 'rack/test'
+      extend Rack::Test::Methods
+
+      get "/admin/index"
+      assert_equal 200, last_response.status
+      assert_equal "Rendered from namespace", last_response.body
+    end
+
+    test "plugin with initializers" do
+      $plugin_initializer = false
+      @plugin.write "config/initializers/foo.rb", <<-RUBY
+        $plugin_initializer = true
+      RUBY
+
+      boot_rails
+      assert $plugin_initializer
+    end
+
+    test "plugin cannot declare an engine for it" do
+      @plugin.write "lib/bukkits.rb", <<-RUBY
+        class Bukkits
+          class Engine < Rails::Engine
+          end
+        end
+      RUBY
+
+      @plugin.write "init.rb", <<-RUBY
+        require "bukkits"
+      RUBY
+
+      rescued = false
+
+      begin
+        boot_rails
+      rescue Exception => e
+        rescued = true
+        assert_equal '"bukkits" is a Railtie/Engine and cannot be installed as plugin', e.message
+      end
+
+      assert rescued, "Expected boot rails to fail"
+    end
   end
 
   class VendoredOrderingTest < Test::Unit::TestCase