Code:
on *:input:*:{
  if $1 == /scan {
    .enable #scan
    .who $2
  }
}
#scan off
raw 315:*:{
  .disable #scan
  haltdef
}
raw 352:*:{
  echo -a $9- $+($6,!,$3,@,$4)
  haltdef
}
raw 416:*:{
  echo -a Too many lines.  Please narrow your search.
  haltdef
}
#scan end