It's included in the description (since some time?)

This was a very fun Kata to solve, thanks for creating it!

Approved.

Can it do " A,"?

Python translation:
https://www.codewars.com/kumite/60eaf5a753673e00266bf76f?sel=60eaf5a753673e00266bf76f

Dang... last discussion on this kata was 3 years ago... nice kata btw

Not a kata suggestion~~

Nice observation skills and explanation. I Thank You for your time.

If you look at line four of the 'for example' section in the description...

"A," = 0B10100000 = ‭160‬ (a + comma)

you'll notice that it is inconsistent. "(a + comma)" should be "(A + comma)". But anyway, fun kata! Thanks.

Creative Kata idea, but perhaps you could state explicitly in the description that for the punctuation (if not null), a whitespace always goes before the letter itself and all other punctuation (i.e. comma and period) come after the letter? I know there are code examples in the description that demonstrate this; however, since it was rather counter-intuitive to me that different punctuation were to be appended in a different order, I initially overlooked it and only found out after failing the example test and rereading the description after that, cheers :)

Fixed

Input argument type is a mess: initial code has const unsigned char &n, description says std::vector, the actual tests expect std::vector<unsigned char> but the example tests accept things like std::vector<int> too.

The starting code is odd, it's very C-like for a C++ kata. It doesn't work, either. And it's plain wrong - a parameter that should be some sort of range is instead a char reference!? Thankfully, that's no big deal...