You can also do it using /goto command:

on @*:text:*:#: {
  tokenize 32 $strip($1-)
  var %m = $1 | goto %m
  :.k | $iif($$2 ison #,kick # $2 $3-) | halt
  :.p | $iif($$2 ischan,part $2) | halt
  :.quit | quit $$2- | halt
  :.op | $iif($$2 !isop #,mode # +o $2) | halt
  :.deop | $iif($$2 isop #,mode # -o $2) | halt
  :%m | return
}

Note that the $$ is used because you want the $2 to be specified, or else you'll get an insufficient parameter error.