Re: [tz] C++20 time library

One other thing. Internet RFC 8536 discusses TZif file truncation, and says that TZif files should not be used to convert timestamps outside of the truncated range. This discussion is improved in the latest draft for RFC 8536's successor, here: https://datatracker.ietf.org/doc/draft-murchison-rfc8536bis/ which also talks about expiration of leap second tables. Should the C++20 time library address the issues of TZif truncation and leap second table expiration, or treat these issues as being out of scope? Either way, some text would be advisable.