Provide a unique point for running initializers.

railties/lib/rails/application.rb

@@ -46,10 +46,11 @@ module Rails
   #   5)  Load config/environments/ENV.rb
   #   6)  Run config.before_initialize callbacks
   #   7)  Run Railtie#initializer defined by railties, engines and application.
-  #       One by one, each engine sets up its load paths, routes and runs its initializer files.
-  #   8)  Build the middleware stack and run to_prepare callbacks
-  #   9)  Run config.before_eager_load and eager_load if cache classes is true
-  #   10) Run config.after_initialize callbacks
+  #       One by one, each engine sets up its load paths, routes, locales and so on.
+  #   8)  Runs all registered config/initializers/*, executing the engines one first
+  #   9)  Build the middleware stack and run to_prepare callbacks
+  #   10) Run config.before_eager_load and eager_load if cache classes is true
+  #   11) Run config.after_initialize callbacks
   #
   class Application < Engine
     autoload :Bootstrap,      'rails/application/bootstrap'

railties/lib/rails/application/configuration.rb

@@ -11,7 +11,7 @@ module Rails
                     :force_ssl, :helpers_paths, :logger, :log_tags, :preload_frameworks,
                     :reload_plugins, :secret_token, :serve_static_assets,
                     :ssl_options, :static_cache_control, :session_options,
-                    :time_zone, :whiny_nils, :railties_order
+                    :time_zone, :whiny_nils, :railties_order, :all_initializers
 
       attr_writer :log_level
       attr_reader :encoding
@@ -36,6 +36,7 @@ module Rails
         @generators                  = app_generators
         @cache_store                 = [ :file_store, "#{root}/tmp/cache/" ]
         @railties_order              = [:all]
+        @all_initializers            = []
 
         @assets = ActiveSupport::OrderedOptions.new
         @assets.enabled                  = false

railties/lib/rails/application/finisher.rb

@@ -4,6 +4,10 @@ module Rails
       include Initializable
       $rails_rake_task = nil
 
+      initializer :load_config_initializers do
+        config.all_initializers.each { |init| load(init) }
+      end
+
       initializer :add_generator_templates do
         config.generators.templates.unshift(*paths["lib/templates"].existent)
       end

railties/lib/rails/engine.rb

@@ -583,10 +583,8 @@ module Rails
       end
     end
 
-    initializer :load_config_initializers do
-      config.paths["config/initializers"].existent.sort.each do |initializer|
-        load(initializer)
-      end
+    initializer :append_config_initializers do |app|
+      app.config.all_initializers.concat config.paths["config/initializers"].existent.sort
     end
 
     initializer :engines_blank_point do