whirl.rb

require "tilt"

class Tilt::Whirl < Tilt::Template
  def evaluate scope, locals, &block
    file.split(".").reverse.inject data do |input, step|
      klass = Tilt[step]
      klass ? klass.new(file) { input }.render(scope, locals) : input
    end
  end

  def prepare
  end
end