# File lib/unified_ruby.rb, line 90
  def rewrite_defn(exp)
    weirdo = exp.ivar || exp.attrset

    # move args up
    args = exp.scope.block.args(true) unless weirdo
    exp.insert 2, args if args

    # move block_arg up and in
    block_arg = exp.scope.block.block_arg(true) rescue nil
    exp.args << block_arg if block_arg

    # patch up attr_accessor methods
    exp.insert 2, s(:args) if weirdo

    exp
  end