June 15, 2021
10:43 a.m.
On Mon, 14 Jun 2021 at 08:27, Paul Eggert via tz <tz@iana.org> wrote:
Any changes along these lines would be complicated by backward-compatibility concerns, though. That is, we could use a "follow"-like syntax only in vanguard format at first.
There is a difference with negative DST though. In my experience, negative DST is impossible to revert in the general case, as a result people want to avoid it. By contrast, a follow rule could be easily implemented as no data is being lost. Stephen