Re: Should we care much about this Unicode-ish criticism?

[David L. Nicol]

Russ Allbery wrote:
> 
>  a caseless character wouldn't show up in
> either IsLower or IsUpper.


maybe an IsCaseless is warrented -- or Is[Upper|Lower]
could return UNKNOWN instead of TRUE|FALSE, if the
extended boolean attributes allow transbinary truth values.