Gem::Command#configure_options

# File tmp/rubies/ruby-4.0.0/lib/rubygems/command.rb, line 556
def configure_options(header, option_list)
  return if option_list.nil? || option_list.empty?

  header = header.to_s.empty? ? "" : "#{header} "
  @parser.separator "  #{header}Options:"

  option_list.each do |args, handler|
    @parser.on(*args) do |value|
      handler.call(value, @options)
    end
  end

  @parser.separator ""
end