class Gem::Commands::ContentsCommand

def execute
  @version   = options[:version] || Gem::Requirement.default
  @spec_dirs = specification_directories
  @path_kind = path_description @spec_dirs
  names = gem_names
  names.each do |name|
    found =
      if options[:show_install_dir] then
        gem_install_dir name
      else
        gem_contents name
      end
    terminate_interaction 1 unless found or names.length > 1
  end
end