Consensus Call on Latin Sharp S and Greek Final Sigma

[Michel SUIGNARD]

> Michel,
>
>I have been interpreting the "no mapping" rules as suggesting that  
>under at least IDNA2008, any mapping functions outside the protocol  
>should avoid mapping PVALID chars into other PVALID chars. I think not

>mapping "undefined" chars into PVALID chars is also, arguably, a good  
>rule.

Vint, these are common sense statements, but again because IDNA2008 does
not include a mapping step they have no teeth in my opinion. IDNA2008
can only deal with data which is presented to it and cannot assume what
happens outside.

And yes, my position is option 1)

Michel