Gregory's Server@shaknais @luna I don't think so. That specifies a set of characters that must exist, that they must fit in a byte, and that characters 0-9 must be consecutive and in order. It doesn't mandate that their values match ASCII.
I believe EBCDIC would meet the requirements, and it is not ASCII compatible.
@koorogi @luna
Not just characters 0-9, but every character in the original ASCII set must exist, and in order, and be represented by a single increment, beginning with 0.
EBCDIC compatibility was dropped in C17, as the standards body couldn't find any still in use.