On Tue, Sep 13, 2022 at 08:19:29PM -0400, Steve Downey via SG16 wrote:
> What implementation headaches would it cause to bump our Unicode reference?
> TR31 identifier characters and named escapes might be impacted? Neither of
> which is hard, but are still some work.

I've created PRs for libc++. The only issue is, what to do with the
width estimation of std::format for the new code points? For now I left
it unchanged. This is the same issue Corentin spotted and filed as
LWG-3780.

Mark