Comment by rurban

Not yet. I was working on the standardization for C23, but this was postponed to C26, and has not much support. MSVC and SDCC liked it, CLANG and GC not so much.

Here is my bad variant of the feature, via confusables: https://github.com/rurban/gcc/tree/homoglyph-pr103027

The better variant would be to use my libu8ident, following UTR 39. I only did that for binutils.