# File lib/ruby2ruby.rb, line 463
  def process_iter(exp)
    iter = process exp.shift
    args = exp.shift
    args = (args == 0) ? '' : process(args)
    body = exp.empty? ? nil : process(exp.shift)

    b, e = if iter == "END" then
             [ "{", "}" ]
           else
             [ "do", "end" ]
           end

    iter.sub!(/\(\)$/, '')

    # REFACTOR: ugh
    result = []
    result << "#{iter} {"
    result << " |#{args}|" if args
    if body then
      result << " #{body.strip} "
    else
      result << ' '
    end
    result << "}"
    result = result.join
    return result if result !~ /\n/ and result.size < LINE_LENGTH

    result = []
    result << "#{iter} #{b}"
    result << " |#{args}|" if args
    result << "\n"
    if body then
      result << indent(body.strip)
      result << "\n"
    end
    result << e
    result.join
  end