Dear Corentin,

I think you want to refer to the Unicode encoding forms.

See, for instance:

The Unicode Standard, Section 3.9, Unicode Encoding Forms:

The Unicode Standard supports three character encoding forms: UTF-32, UTF-16, and UTF-8.

Unicode Technical Report #17, Unicode Character Encoding Model, Section 5 Character Encoding Scheme (CES):

Some of the Unicode encoding schemes have the same labels as the three Unicode encoding forms.

Note that Unicode encodings specified in the Unicode standard is a little bit ambiguous, because Unicode distinguishes the encoding forms (code points to code units) from the encoding schemes (code units to bytes; the Unicode Standard supports seven encoding schemes, with LE/BE/BOM for 16 and 32). Assuming that the context here is [format.string.escaped] in document P2736, it looks like you are indeed dealing with the interpretation of code units (represented by the types char8_t, char16_t, and char32_t, per [lex.string.literal] referenced in [format.string.escaped]), and thus with encoding forms.

Best regards,

Robin Leroy

Le mer. 8 févr. 2023 à 00:32, Corentin <corentin.jabot@gmail.com> a écrit :

Hey Robin,
How are you?

Does Unicode have a term to designate "UTF-8, UTF-16 and UTF-32", i.e. Unicode encodings specified in the Unicode standard - excluding things like CESU-8 for example?
It's something we would find useful in the C++ specification

Thanks,

Corentin