On Mon, 2024-07-22 at 16:26 +0200, Peter Eisentraut wrote:
> Unless I missed something here, all the problem examples involve
> unassigned code points that were later assigned.
For normalization and case mapping that's right.
For regexes, a character property could change. But that's mostly a
theoretical problem because, at least in my experience, I can't recall
ever seeing an index that would be affected.
Regards,
Jeff Davis