# File lib/rvm/environment/utility.rb, line 119
    def self.environment_with_gemset(environment, gemset)
      environment_name, gemset_name = environment.split("@", 2)
      environment_name = "default"     if environment_name.to_s.empty?
      environment_name << "@#{gemset}" unless gemset.to_s.empty?
      environment_name
    end