my $conf = new FS::Conf;
my $mask_method = $conf->config('card_masking_method') || 'first6last4';
$mask_method =~ /^first(\d+)last(\d+)$/
or die "can't parse card_masking_method $mask_method";
my($first, $last) = ($1, $2);
my $conf = new FS::Conf;
my $mask_method = $conf->config('card_masking_method') || 'first6last4';
$mask_method =~ /^first(\d+)last(\d+)$/
or die "can't parse card_masking_method $mask_method";
my($first, $last) = ($1, $2);