textdomain (GetText)

    # File lib/gettext.rb, line 85
      def textdomain(domainname)
        domain = TextDomainManager.textdomain(domainname)
        raise NoboundTextDomainError, "#{domainname} is not bound." unless domain
        manager = @@__textdomainmanagers[bound_target]
        unless manager
          manager = TextDomainManager.new(bound_target, Locale.get)
          @@__textdomainmanagers[bound_target] = manager
        end
        manager.add_textdomain(domainname)
        manager.set_locale(Locale.get)
      end