Tim Parenti wrote:
To me, it boils down to which is likely to be less work for future maintenance
That's important, but it's also important to simplify users' lives. I expect most users to prefer a less-wrong guess (guessed transition off by a week) to a more-wrong guess (guess no DST when there is DST). The maintenance burden is about the same either way, so we might as well guess DST here. Human nature being what it is, I guess that the new government is more likely to repeat its new rules than to go back to the previous government's. If so, the attached patch would be a bit more plausible; plus, it's simpler. Of course there is no guarantee of any of these predictions. I'm planning to cut a new release soon, because the current release becomes wrong this weekend.