if ( $this->fss === false ) {
$this->fss = fss_prep_replace( $this->data );
}
$result = fss_exec_replace( $this->fss, $subject );
if ( $this->fss === false ) {
$this->fss = fss_prep_replace( $this->data );
}
$result = fss_exec_replace( $this->fss, $subject );