This would be so much easier (for me;)  ) if all data forms were published by IANA.

$ awk -v DATAFORM=vanguard -f ziguard.awk africa antarctica asia australasia europe northamerica southamerica etcetera systemv factory backward
malloc(): memory corruption
Aborted (core dumped)

On Ubuntu 18.04 trying to get files in rearguard format so I can patch Java & JodaTime....

Need to patch as we need the Fiji change now.