> I think this has to depend on the C standards version. I think each C > standard needs to be read against the edition of ISO 10646 current at > the time of standards approval (the references are sadly not > versioned, so the version is implied). Early versions of ISO 10646 > definitely do not have the codespace restriction you mention.
Note the already existing hardcoded check in ucn_valid_in_identifier though. -- Eric Botcazou
