# File lib/ruby2ruby.rb, line 350
  def process_ensure(exp)
    body = process exp.shift
    ens  = exp.shift
    ens  = nil if ens == s(:nil)
    ens  = process(ens) || "# do nothing"

    body.sub!(/\n\s*end\z/, '')

    return "#{body}\nensure\n#{indent ens}"
  end