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Re: [DNSOP] draft-liman-tld-names-04

Eric Brunner-Williams <ebw@abenaki.wabanaki.net> Mon, 29 November 2010 17:06 UTC

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Date: Mon, 29 Nov 2010 12:07:29 -0500
From: Eric Brunner-Williams <ebw@abenaki.wabanaki.net>
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Subject: Re: [DNSOP] draft-liman-tld-names-04
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On 11/29/10 11:10 AM, Tony Finch wrote:
> On Mon, 29 Nov 2010, Eric Brunner-Williams wrote:
>>
>> there exist rules, much earlier than 1123, about "-" as the initial, or
>> terminal, byte in a sequence of bytes, and about sequences of two or more
>> instances of "-" where neither byte is the initial, or terminal, byte in a
>> sequence of bytes.
>
> There has never been a restriction on consecutive hyphens, otherwise they
> would not have been usable in IDN A-labels.

"have only letters or digits or hyphen as interior characters."
from 921

now had there actually been a protocol restriction on sequences of 
hyphen longer than one, (years before any implementation of the 
protocol) then your observation would be correct, and we'd have to use 
some other mechanism to signal "interpret as" to some layer above.

-e

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