# File lib/rbot/config.rb, line 264
    def handle_set(m, params)
      key = params[:key].to_s.intern
      value = params[:value].join(" ")
      unless @@items.has_key?(key)
        m.reply "no such config key #{key}"
        return
      end
      begin
        @@items[key].set_string(value)
      rescue ArgumentError => e
        m.reply "failed to set #{key}: #{e.message}"
        return
      end
      if @@items[key].requires_restart
        m.reply "this config change will take effect on the next restart"
      else
        m.okay
      end
    end