Is º an unicode alphabetic character?

[AsmMan via Digitalmars-d-learn]

On Friday, 12 September 2014 at 07:57:43 UTC, Ali Çehreli wrote:
> On 09/11/2014 11:38 PM, AsmMan wrote:
>
> > If I want ASCII and latin only alphabet which range should I
> use?
> > ie, how should I rewrite is_id() function?
>
> This seems to be it:
>
> import std.stdio;
> import std.uni;
>
> void main()
> {
>     alias latin = unicode.script.latin;
>     assert('ç' in latin);
>     assert('7' !in latin);
>
>     writeln(latin);
> }
>
> Ali

Sorry, I shouldn't asked for latin but an alphabet like French 
instead of: 
http://www.importanceoflanguages.com/Images/French/FrenchAlphabet.jpg 
(including the diacritics, of course)

As you mentioned, º happend to be a letter so it still pass in: 
assert('º' in latin);

so isn't different from isAlpha(). Is the UTF-8 table organized 
so that I can use a range (like we do for ASCII ch >= 'a' && ch 
<= 'z' || ch >= 'A' && ch <= 'Z') or should I put these alpha 
characters myself on table and then do look up?