lib/chatterbot/dsl.rb
def safelist(*args)
      list = flatten_list_of_strings(args)

      if list.nil? || list.empty?
        bot.safelist = []
      else
        bot.safelist += list
      end
    end
def safelist(*args)
      list = flatten_list_of_strings(args)

      if list.nil? || list.empty?
        bot.safelist = []
      else
        bot.safelist += list
      end
    end
specify a bot-specific safelist of users.  accepts an array, or a
 comma-delimited string. when called, any subsequent calls to
 search or replies will only act upon these users.

 @param [Array, String] args list of usernames or Twitter::User objects
 @example
   safelist "mean_user, private_user"