Code:
on me:^*:PART:#:{ 
 if $1 { var %reason = ( $+ $1- $+ ) }  
echo $color(part) -bflirt $chan * Parts: $nick ( $+ $address $+ ) %reason 
 haltdef
}


Umm won't echoing it to $chan have no effect since right after the part, the window is closed?