Gem::Commands::ContentsCommand#show_files

# File tmp/rubies/ruby-3.4.1/lib/rubygems/commands/contents_command.rb, line 163
def show_files(files)
  files.sort.each do |prefix, basename|
    absolute_path = File.join(prefix, basename)
    next if File.directory? absolute_path

    if options[:prefix]
      say absolute_path
    else
      say basename
    end
  end
end