From 08636527b5f5ba1c96937e86fd0c6e816462a1eb Mon Sep 17 00:00:00 2001
From: Aaron Patterson <aaron.patterson@gmail.com>
Date: Tue, 19 Oct 2010 17:43:30 -0700
Subject: avoid cloning if we do not need to clone

---
 activerecord/lib/active_record/relation/query_methods.rb | 2 ++
 1 file changed, 2 insertions(+)

(limited to 'activerecord/lib/active_record')

diff --git a/activerecord/lib/active_record/relation/query_methods.rb b/activerecord/lib/active_record/relation/query_methods.rb
index e8bd4dc485..d0f11526ac 100644
--- a/activerecord/lib/active_record/relation/query_methods.rb
+++ b/activerecord/lib/active_record/relation/query_methods.rb
@@ -120,6 +120,8 @@ module ActiveRecord
     def extending(*modules)
       modules << Module.new(&Proc.new) if block_given?
 
+      return self if modules.empty?
+
       relation = clone
       relation.send(:apply_modules, modules.flatten)
       relation
-- 
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