Given that we have
r# raw identifier syntax, I think it makes sense for it to allow any “Ident_Continue” character after the
# rather than requiring starting with a “Ident_Start” character like regular keywords.
I’m currently thinking about it since I’m writing a compile-to-Rust tool that allows mixing named and unnamed fields, so mapping the unnamed fields to
r#<digit> makes some amount of sense. (They’re not exposed names, so for now I’m just using random UUIDs.)