Mine

alias mass {
  var %cnt = 1, %massmodes
  while (%cnt <= $nick($chan,0)) {
    if ($nick($chan,%cnt) != $me) %massmodes = %massmodes $nick($chan,%cnt)
    if ($numtok(%massmodes,32) >= $modespl) {
      mode $chan $str($$1,$modespl) %massmodes
      %massmodes = ""
    }
    inc %cnt
  }
  if (%massmodes) mode $chan $str($$1,$modespl) %massmodes
}