From ca54cc5df72a8bd7660d5be8333dcee2b6949257 Mon Sep 17 00:00:00 2001
From: Yehuda Katz <wycats@gmail.com>
Date: Sun, 4 Jan 2009 00:56:52 -0800
Subject: Sync 'rails/rails/master'

---
 .../lib/action_controller/middleware_stack.rb       | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)

(limited to 'actionpack/lib')

diff --git a/actionpack/lib/action_controller/middleware_stack.rb b/actionpack/lib/action_controller/middleware_stack.rb
index 74f28565c0..2bccba2ba1 100644
--- a/actionpack/lib/action_controller/middleware_stack.rb
+++ b/actionpack/lib/action_controller/middleware_stack.rb
@@ -1,6 +1,14 @@
 module ActionController
   class MiddlewareStack < Array
     class Middleware
+      def self.new(klass, *args, &block)
+        if klass.is_a?(self)
+          klass
+        else
+          super
+        end
+      end
+
       attr_reader :args, :block
 
       def initialize(klass, *args, &block)
@@ -65,6 +73,19 @@ module ActionController
       block.call(self) if block_given?
     end
 
+    def insert(index, *objs)
+      index = self.index(index) unless index.is_a?(Integer)
+      objs = objs.map { |obj| Middleware.new(obj) }
+      super(index, *objs)
+    end
+
+    alias_method :insert_before, :insert
+
+    def insert_after(index, *objs)
+      index = self.index(index) unless index.is_a?(Integer)
+      insert(index + 1, *objs)
+    end
+
     def use(*args, &block)
       middleware = Middleware.new(*args, &block)
       push(middleware)
-- 
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