# user didn't specify columns, so just SAR each line and leave alone
        } else {

            # loop through mapping array for each line
            foreach my $replace (keys(%map)) {
                # ignore case?
                if (defined($opt_ignore)) {
                    $YESMapping += ($_ =~ s/$replace/$map{$replace}/gi)
                } else {
                    $YESMapping += ($_ =~ s/$replace/$map{$replace}/g)
                }
            }
            print $OUT $_
        }