1 files changed, 2 insertions, 1 deletions
diff --git a/lib/delegate.rb b/lib/delegate.rb
index 205d5e1fbd..a544773983 100644
--- a/lib/delegate.rb
+++ b/lib/delegate.rb
@@ -13,11 +13,12 @@
 class Delegator
 
   def initialize(obj)
-    preserved = ["type", "id", "equal?", "__getobj__"]
     for t in self.type.ancestors
       preserved |= t.instance_methods
       break if t == Delegator
     end
+    preserved |= ::Kernel.instance_methods
+    preserved -= ["to_s", "nil?", "to_a", "hash", "dup", "==", "=~"]
     for method in obj.methods
       next if preserved.include? method
       eval "def self.#{method}(*args,&block); __getobj__.__send__(:#{method}, *args,&block); end"