Gem::QueryUtils#entry_versions

# File tmp/rubies/ruby-4.1.0-preview1/lib/rubygems/query_utils.rb, line 252
def entry_versions(entry, name_tuples, platforms, platform_ruby_abis, specs)
  return unless options[:versions]

  list =
    if platforms.empty? || options[:details]
      name_tuples.map(&:version).uniq
    elsif ruby_abi_metadata?(platform_ruby_abis)
      platforms.sort.reverse.flat_map do |version, pls|
        out = version_label(version, specs)
        labels = version_platform_labels(version, pls, platform_ruby_abis, label_platform: true)
        labels.empty? ? [out] : labels.map {|label| "#{out} #{label}" }
      end
    else
      platforms.sort.reverse.map do |version, pls|
        out = version_label(version, specs)
        labels = version_platform_labels(version, pls, platform_ruby_abis)
        labels.empty? ? out : "#{out} #{labels.join(" ")}"
      end
    end

  use_multiline_separator = !options[:details] && ruby_abi_metadata?(platform_ruby_abis) && list.length > 1
  separator = use_multiline_separator ? "\n#{" " * (entry.first.length + 2)}" : ", "
  entry << " (#{list.join separator})"
end