highest_remote_version

# File lib/rubygems/commands/update_command.rb, line 138
  def highest_remote_version spec # :nodoc:
    spec_tuples = fetch_remote_gems spec

    matching_gems = spec_tuples.select do |g,_|
      g.name == spec.name and g.match_platform?
    end

    highest_remote_gem = matching_gems.max_by { |g,_| g.version }

    highest_remote_gem ||= [Gem::NameTuple.null]

    highest_remote_gem.first.version
  end