# File lib/rubygems.rb, line 898
  def self.ruby
    if @ruby.nil? then
      @ruby = File.join(ConfigMap[:bindir],
                        "#{ConfigMap[:ruby_install_name]}#{ConfigMap[:EXEEXT]}")

      @ruby = "\"#{@ruby}\"" if @ruby =~ /\s/
    end

    @ruby
  end