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Description: Ruby on Rails
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fix problem with EMPTY_INHERITABLE_ATTRIBUTES being redefined

git-svn-id: 
http://svn-commit.rubyonrails.org/rails/branches/1-2-stable@6116 
5ecf4fe2-1ee6-0310-87b1-e25e094e27de
technoweenie (author)
Sun Feb 04 11:30:33 -0800 2007
commit  92b00efd7001e6a3fecd6f7d7bddc1f6d43ab54e
tree    e55847a9d964e47bded5b2fb14aabe83c2a3e47b
parent  21fafdd290eb176fffc0d643db0be5fdd218b934
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activesupport/lib/active_support/core_ext/class/inheritable_attributes.rb 
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@@ -118,7 +118,8 @@ class Class # :nodoc:
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   end
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   private
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-    EMPTY_INHERITABLE_ATTRIBUTES = {}.freeze
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+    # Prevent this constant from being created multiple times
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+    EMPTY_INHERITABLE_ATTRIBUTES = {}.freeze unless const_defined?(:EMPTY_INHERITABLE_ATTRIBUTES)
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     def inherited_with_inheritable_attributes(child)
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       inherited_without_inheritable_attributes(child) if respond_to?(:inherited_without_inheritable_attributes)

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