on *:JOIN:#:writeini -n seen.ini seen $nick $ctime
on *:PART:#:writeini -n seen.ini seen $nick $ctime
on *:QUIT:writeini -n seen.ini seen $nick $ctime
on *:TEXT:*:*:{
writeini -n seen.ini seen $nick $ctime
if ($1 = !seen) $iif($chan,notice,msg) $nick $iif($2,$iif($readini(seen.ini,seen,$2),Seen $2 before $duration($calc($ctime - $v1),2) $+ .,Sorry $+ $chr(44) haven't seen $2 $+ .),Please specify user to check for.)
}
Tadaaaa!