on $*:TEXT:/^[?!@]count */Si:#: {  
  set %output  $iif($left($1,1) == !,notice $nick,msg $chan) 
  if ($2- = $null) %output There are $nick(#,0) users in $chan 
  if ($me ison $2-) %output There are $nick($2,0) users in $2 
}