[tz] Re: Should all IDs from backzone be available in backward?

On 2025-06-23 02:51, robertbastian--- via tz wrote:

Can Asia/Hanoi be added as a link in backward to ensure compatibility

No, because 'backward' is intended to be backward compatibility with older names in the primary files, not for compatibility with something else. I see the confusion there, though. Perhaps we should move Asia/Hanoi to a new file named something like "addzone", for those who want to add extra zones not needed for any kind of compatibility with older tzdata.