bug#66698: I think hex decoding with basenc -d --base16 should be case-insensitive

[Paul Eggert]

On 10/23/23 06:08, Pádraig Brady wrote:
> However the default operation should be the
> most common requirement (and also the RFC documented operation in this 
> case).
> A similar case I hit very frequently is pasting hex into bc, and it's
> very annoying to have to convert to uppercase before doing this.

Doesn't the isbase16 function also need updating?

Also, shouldn't we do something similar for base 32, for consistency?