1 files changed, 10 insertions, 2 deletions
diff --git a/actionpack/lib/action_controller/mime_type.rb b/actionpack/lib/action_controller/mime_type.rb
index ad2f5aaac5..6a33fdc19a 100644
--- a/actionpack/lib/action_controller/mime_type.rb
+++ b/actionpack/lib/action_controller/mime_type.rb
@@ -1,12 +1,16 @@
 module Mime
-  class Type < String
+  class Type
     def self.lookup(string)
       LOOKUP[string]
     end
     
     def initialize(string, symbol = nil, synonyms = [])
       @symbol, @synonyms = symbol, synonyms
-      super(string)
+      @string = string
+    end
+    
+    def to_s
+      @string
     end
     
     def to_sym
@@ -20,6 +24,10 @@ module Mime
         super
       end
     end
+    
+    def ==(mime_type)
+      (@synonyms + [ self ]).any? { |synonym| synonym.to_s == mime_type.to_s } if mime_type
+    end
   end
 
   ALL  = Type.new "*/*", :all