How can I use option "--bare" in Rails 3.1 for CoffeeScript?

Someone know how can I use this option in Rails 3.1? Now CoffeScript puts a function with .call(this) on each file, but I want to remove this. EDIT: "Can't find variable” error with Rails 3.1 and Coffeescript" and "Pattern for CoffeeScript modules" have what I want. I'll change my global vars to use @global scope.

[gam-22]

RailsでCoffeeScriptをViewから呼び出す時には “Tilt::CoffeeScriptTemplate.default_bare = true” が必要。