Ecxept doesn't work when you use it in different scopes (in master).
Here is an example:
class A < ActiveRecord::Base scope :order_by_salary, order("salary DESC") scope :reorder_by_name, except(:order).order("name DESC") end
So this code won't work:
A.order_by_salary.reorder_by_name
I've created a ticket and patch with tests here: https://rails.lighthouseapp.com/projects/8994-ruby-on-rails/tickets/6290