add_reminder (RemindPlugin)

    # File rbot/plugins/remind.rb, line 23
      def add_reminder(who, subject, timestr, repeat=false)
        begin
          period = Irc::Utils.timestr_offset(timestr)
        rescue RuntimeError
          return "couldn't parse that time string (#{timestr}) :("
        end
        if(period <= 0)
          return "that time is in the past! (#{timestr})"
        end
        if(period < 30 && repeat)
          return "repeats of less than 30 seconds are forbidden"
        end
        if(!@reminders.has_key?(who))
          @reminders[who] = Hash.new
        elsif(@reminders[who].has_key?(subject))
          del_reminder(who, subject)
        end

        if(repeat)
          @reminders[who][subject] = @bot.timer.add(period) {
            time = Time.now + period
            tstr = time.strftime("%H:%M:%S")
            @bot.say who, "repeat reminder (next at #{tstr}): #{subject}"
          }
        else
          @reminders[who][subject] = @bot.timer.add_once(period) {
            time = Time.now + period
            tstr = time.strftime("%H:%M:%S")
            @bot.say who, "reminder (#{tstr}): #{subject}"
          }
        end
        return false
      end