# File lib/rbot/core/filters_ui.rb, line 35
  def do_listgroups(m, params)
    ar = @bot.filter_groups.map { |s| s.to_s }.sort!
    if ar.empty?
      msg = _("no known filter groups")
    else
      msg = _("known filter groups: ") << ar.join(", ") 
    end
    m.reply msg
  end