Allowed characters (was: Re: Casefolding Sigma (was: Re: IDNAbis Preprocessing Draft)

[Michael Everson]

At 12:36 +0200 2008-03-30, Patrik Fältström wrote:

>>I see that this character is allowed:
>>
>>FE73        ; PVALID      # ARABIC TAIL FRAGMENT
>>
>>Why?
>
>Because it is general category Lo.
>
>FE73;ARABIC TAIL FRAGMENT;Lo;0;AL;;;;;N;;;;;

But

FE70..FE72  ; DISALLOWED  # ARABIC FATHATAN ISOLATED FORM..ARABIC DAMMAT

also have the general category Lo, and they are disallowed.
-- 
Michael Everson * http://www.evertype.com