Comment by flohofwoe

Calm down, ASCII is a UNICODE compatible encoding for the first 127 UNICODE code points (which maps directly to the entire ASCII range). If you need to go beyond that, just 'upgrade' to UTF-8 encoding.

UNICODE is essentially a superset of ASCII, and the UTF-8 encoding also contains ASCII as compatible subset (e.g. for the first 127 UNICODE code points, an UTF-8 encoded string is byte-by-byte compatible with the same string encoded in ASCII).

Just don't use any of the Extended ASCII flavours (e.g. "8-bit ASCII with codepages") - or any of the legacy 'national' multibyte encodings (Shift-JIS etc...) because that's how you get the infamous `?????` or `♥♥♥♥♥` mismatches which are commonly associated with 'ASCII' (but this is not ASCII, but some flavour of Extended ASCII decoded with the wrong codepage).