Ah, "Hyphens (-) can be inserted into symbol strings." If you don't like 'em, don't use 'em.

And the only point of these encodings is to be more human-palatable than base64. If you take that goal out of the equation, just use base64, it's better (denser, more readily supported everywhere). Various base32's and base58 exist because base64 was not human friendly enough.