Comments on the Unicode Codepoints and IDNA Internet-Draft
mail at edmon.info
Thu Jul 31 13:13:32 CEST 2008
The suggestion is to have the rule only for those codepoints listed as
CONTEXTJ/O (i.e. to list combining chars as CONTEXTJ/O).
Not for the rule to apply to all codepoints.
> -----Original Message-----
> From: Stephane Bortzmeyer [mailto:bortzmeyer at nic.fr]
> Sent: Thursday, July 31, 2008 6:40 PM
> To: mail at edmon
> Cc: idna-update at alvestrand.no
> Subject: Re: Comments on the Unicode Codepoints and IDNA Internet-Draft
> On Thu, Jul 31, 2008 at 08:12:51AM +0800,
> mail at edmon <mail at edmon.info> wrote
> a message of 234 lines which said:
> > toNFKC(toCaseFolded(toNFKC(label))) != label
> This is interesting but it completely changes the tables, which are
> currently per character, not per label. This would imply to change the
> other rules (for instance, from "cp is not in Exceptions" to "no cp in
> the label is in Exceptions").
> With the current tables, checking if a label is legal is almost
> trivial (only composed of legal characters, with the special annoying
> rule of context-allowed characters). With your proposal, checking if a
> label is legal means running Unicode routines such as NFKC.
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