+ if params[:channels].empty? || !@registry.has_key?(params[:mask])
+ # if the channels parameter is omitted (meaning all channels), or the
+ # hostmask isn't present in the registry, we just (over)write the channels
+ # in the registry
+ @registry[params[:mask]] = params[:channels].dup
+ m.okay
+ else
+ # otherwise, merge the channels with the ones existing in the registry
+ current_channels = @registry[params[:mask]]
+ if current_channels.empty?
+ m.reply "#{params[:mask]} is already being auto-opped on all channels"
+ else
+ # merge the already set channels
+ @registry[params[:mask]] = (params[:channels] | current_channels).uniq
+ m.okay
+ end
+ end