Use a set for the named scope methods not a big regexp.

activerecord/lib/active_record/named_scope.rb

@@ -101,9 +101,9 @@ module ActiveRecord
     
     class Scope
       attr_reader :proxy_scope, :proxy_options
-
+      NON_DELEGATE_METHODS = %w(nil? send object_id class extend find count sum average maximum minimum paginate first last empty? any? respond_to?).to_set
       [].methods.each do |m|
-        unless m =~ /(^__|^nil\?|^send|^object_id$|class|extend|^find$|count|sum|average|maximum|minimum|paginate|first|last|empty\?|any\?|respond_to\?)/
+        unless m =~ /^__/ || NON_DELEGATE_METHODS.include?(m)
           delegate m, :to => :proxy_found
         end
       end