unicode as valid naming symbols

[Chris Angelico]

On Fri, Mar 28, 2014 at 2:28 AM, Mark H Harris <harrismh777 at gmail.com> wrote:
>   No, any unicode character (except numerals) should be able to begin a name
> identifier.   alt-l  λ   and  alt-v  √   should be valid first character
> name identifier symbols.
>

What, even whitespace??

ChrisA