"Martin J. Dürst" duerst at it.aoyama.ac.jp
Tue Dec 8 02:41:23 CET 2009

On 2009/12/08 4:56, Shawn Steele wrote:
>> So it's not clear to me if bundling of sigma and final sigma is necessary.
> AFAIK: The only reason to bundle them would be if you presume that mapping is necessary, since lowercasing the Greek would be unclear in some cases.

There are actually two reasons:

1) To catch the uppercase Σ. This reason is more or less permanent.
2) To be backwards compatible with IDNA 2003. This reason is transient.

Regards,   Martin.

#-# Martin J. Dürst, Professor, Aoyama Gakuin University
#-# http://www.sw.it.aoyama.ac.jp   mailto:duerst at it.aoyama.ac.jp

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