named_scope :all is missing

The documentation for ActiveRecord::NamedScope states:

All subclasses of ActiveRecord::Base have two named scopes: * all - which is similar to a find(:all) query, and * scoped - which allows for the creation of anonymous scopes, on the fly

However, there is no named_scope named 'all'.

In script/console:

>> User.all.class
=> Array
>> User.scoped(:conditions => {}).class
=> ActiveRecord::NamedScope::Scope

I was able to correct the issue with the following addition to activerecord/lib/active_record/named_scope.rb:

     def self.included(base)
       base.class_eval do
         extend ClassMethods
         named_scope :scoped, lambda { |scope| scope }
+        named_scope :all, lambda { { :conditions => {} } }
       end
     end

I'm not sure that's the right fix, but it seems to work well for me. But I'm guessing that ActiveRecord::Base#all will also need to be removed.