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&unpack_a( $lines[$_] ) if ( $RECORD_SEQ_ID eq 'A' ); &unpack_b( $lines[$_] ) if ( $RECORD_SEQ_ID eq 'B' ); &unpack_c( $lines[$_] ) if ( $RECORD_SEQ_ID eq 'C' );
my $fun = "&UNPACK_$RECORD_SEQ_ID('$lines[$_]')";