ngettext (GetText)

    # File lib/gettext.rb, line 161
      def ngettext(arg1, arg2, arg3 = nil)
        if arg1.kind_of?(Array)
          msgid = arg1[0]
          msgid_plural = arg1[1]
          n = arg2
        else
          msgid = arg1
          msgid_plural = arg2
          n = arg3
        end
        ret = nil
        each_textdomain {|textdomain|
          ret = textdomain.ngettext(msgid, msgid_plural, n)
          break if ret
        }
        ret ? ret : (n == 1 ? msgid : msgid_plural)
      end