alias mass {
  if ($me !isop $chan) return
  var %i = $nick($chan,0), %sign = $left($$1,1), %mode = $right($$1,-1)
  :serve_users
  var %users
  while ((%i) && ($numtok(%users,32) < $modespl)) { %users = %users $nick($chan,%i) | dec %i }
  mode $chan $+(%sign,$str(%mode,$numtok(%users,32))) %users
  if (%i) goto serve_users
}