HYPHEN-MINUS

[Patrik Fältström]

Ack!

    paf

On 29 jul 2009, at 10.47, John C Klensin wrote:

> Chris,
>
> While I disagree with several aspects of your analysis, I think
> you have correctly identified an edge case that exposes a bug.
> Unless others disagree, I'm make the change to Protocol that you
> suggest, meaning that Patrik can remove the contextual rule.
>
>    john
>
>
> --On Wednesday, July 29, 2009 00:50 +1000 Chris Wright
> <chris at ausregistry.com.au> wrote
>> ...
>> To clear any confusion that may have arisen during limited
>> discussion last week, the context rule is applied to the
>> putative U-label, therefore the DNS and host name syntax
>> restrictions do not apply (yet). Consider the label
>> b[U+00FC]cher-. The output of this label through the punycode
>> algorithm when appended with the ACE prefix gives gives
>> xn--bcher--3ya. Note this label conforms to the host name
>> syntax.
>> Thus for consistency, simplicity and clarity sake I propose
>> the following:
>> In protocol change:
>>
>> 4.2.3.1. Consecutive Hyphens
>> The Unicode string MUST NOT contain "--" (two consecutive
>> hyphens) in the third and fourth character positions.
>> to
>>
>> 4.2.3.1. Hyphen Restrictions
>> The Unicode string MUST NOT contain "--" (two consecutive
>> hyphens) in the third and fourth character positions and MUST
>> NOT start or end with a "-" (hyphen).
>> And then remove the context rule from the tables document and
>> return hyphen to PVALID status as with all other LDH characters
>>
>> Thanks
>>
>> Chris
>>
>> _______________________________________________
>> Idna-update mailing list
>> Idna-update at alvestrand.no
>> http://www.alvestrand.no/mailman/listinfo/idna-update
>
>
>
>
>

-------------- next part --------------
A non-text attachment was scrubbed...
Name: PGP.sig
Type: application/pgp-signature
Size: 186 bytes
Desc: This is a digitally signed message part
Url : http://www.alvestrand.no/pipermail/idna-update/attachments/20090729/d9fc3f7a/attachment.pgp