BCS wrote:
Reply to Stewart,
<snip>
My impression was that it's some standard list of Unicode characters
that are letters (or logogram or ideogram or whatever) in some
language somewhere in the world.
That's more or less the same thing (although I'll admit, my original
comment is not well stated).
Indeed, my keyboard has a number of punctuation characters, most of
which aren't valid in identifiers.
I'm not just talking about standard QWERTY
keyboard but also standard keyboards for other languages and alphabets.
I'd got that far.
I rather suspect that for every char in universal alpha, there is a
standard keyboard somewhere that has it.
So I guess it's therefore likely to exclude ancient scripts with not
enough modern use to have warranted the invention of a standard keyboard
therefor. (One omission I noticed is Phoenician, though that may be
also due to its later arrival in Unicode.)
Stewart.
