brew/Library/Homebrew/cask/lib/hbc/caveats.rb

module Hbc
  class Caveats
    def initialize(block)
      @block = block
    end

    def eval_and_print(cask)
      dsl = DSL::Caveats.new(cask)
      retval = dsl.instance_eval(&@block)
      return if retval.nil?
      puts retval.to_s.sub(/[\r\n \t]*\Z/, "\n\n")
    end
  end
end