Merge default scopes by default

(sorry for the "Assigned user" spam - just changing that value to get this on the radar of more than one person)

Excellent - will do so in the next day or so. Looks like it'll be a lot easier to do in rails-3 - nice job finding good abstractions.

Patch: http://github.com/dchelimsky/rails/commit/8b9b8e9cbf8c67b06d9890d32...

There is still an unsolved issue with this one:
I would like:
class Post
default_scope order(:title) default_scope where(:state => 'active') end
To be similar to:
class Post
default_scope order(:title).where(:state => 'active') end
Since (Rails 3.0.1) activerecord-3.0.1/lib/active_record/base.rb line 890:
Thread.current[key] = Thread.current[key].presence || self.default_scoping.dup
seems to spoil stuff (.dup) I made an initializer with the following content:
class ActiveRecord::Base
def self.default_scope(options = {})

key = :"#{self}_scoped_methods"
Thread.current[key] = nil                                                                                                                                                                                                                
self.default_scoping << construct_finder_arel(options, default_scoping.pop)

end
end
Basically resetting Thread.current[key] when default_scope is invoked. This solves this issue, but there might be a better solution.

with better formatting:

class ActiveRecord::Base
 def self.default_scope(options = {})
  key = :"#{self}_scoped_methods"
  Thread.current[key] = nil
  self.default_scoping << construct_finder_arel(options, default_scoping.pop)
 end
end