comments on draft-ietf-idnabis-bidi
Erik van der Poel
erikv at google.com
Wed Aug 5 18:27:10 CEST 2009
On Wed, Aug 5, 2009 at 5:05 AM, Harald Tveit
Alvestrand<harald at alvestrand.no> wrote:
> Erik van der Poel skrev:
>> CS and ET certainly are two of the more noticeable differences between
>> Mati's proposal and the expired draft, but I don't know whether they
>> are so beneficial, since they are mostly (all?) punctuation and symbol
>> characters that are not allowed anyway.
>> Similarly, the rule that allows EN followed by ET at the end of a
>> label may not be so beneficial due to the prohibition of punctuation
>> and symbol characters.
> All the ET and CS characters are in classes normally forbidden in IDNA2008 -
> at least in Unicode 5.1:
> egrep ";(CS|ET);" UnicodeData.txt | egrep -v ';(Sc|Po|So|Sm|Zs);'
> (no output)
> But there's no reason for Bidi to disallow them for that reason - exceptions
> can occur in the future.
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