class Rufo::Formatter

def visit_call_args(node)
  # [:args_add_block, args, block]
  _, args, block_arg = node
  if !args.empty? && args[0] == :args_add_star
    # arg1, ..., *star
    visit args
  else
    visit_comma_separated_list args
  end
  if block_arg
    skip_space_or_newline
    if comma?
      indent(next_indent) do
        write_params_comma
      end
    end
    consume_op "&"
    skip_space_or_newline
    visit block_arg
  end
end