GetoptLong#terminate

# File tmp/rubies/ruby-3.1.3/lib/getoptlong.rb, line 361
def terminate
  return nil if @status == STATUS_TERMINATED
  raise RuntimeError, "an error has occurred" if @error != nil

  @status = STATUS_TERMINATED
  @non_option_arguments.reverse_each do |argument|
    ARGV.unshift(argument)
  end

  @canonical_names = nil
  @argument_flags = nil
  @rest_singles = nil
  @non_option_arguments = nil

  return self
end