Zero-Width Joiner in draft-ietf-idnabis-tables

Patrik Fältström patrik at
Fri Aug 7 09:29:39 CEST 2009

On 2 aug 2009, at 19.08, Gihan Dias wrote:

> We are very keen to ensure that zero-width joiner (U+200D) is  
> *allowed*
> for domains in the Sinhala script. So please include Sinhala in A.2.
> Also, is the Joining Type OK?

The rule is at the moment the following:

If Canonical_Combining_Class(Before(cp)) .eq. Virama Then True;

This implies you can use zero-with joiner after SINHALA SIGN AL-LAKUNA  
(as it has Canonical_Combining_Class that is Virama, i.e. 9).

I hope that is solves the issues with Sinhala Script.


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