I-D Action:draft-alvestrand-idna-bidi-04.txt (fwd)
Erik van der Poel
erikv at google.com
Thu Feb 14 23:02:08 CET 2008
Harald, Patrik and John,
Thanks for posting the new version of the IDNA200X bidi spec.
I see that you have a recommendation for registries in the final
paragraph of section 6.1. So a registry only needs to be concerned
about the next level up from the label being registered, if that label
contains any "right-to-left" characters. We may need to tighten that
up to say R, AL or AN? Or just R and AL?
Also, what would the recommendation be for resolvers? I suppose they
would have a similar rule for the next level up, but there is also the
rule "ES and ON, followed by zero or more NSM, is not allowed in the
last position", so a resolver may also need to look at the next level
*down*, right?
ES is European number separator (such as + and -) while ON is other
neutral (such as @ and &), so maybe we could simplify the resolver's
job by making ES and ON DISALLOWED in the Table spec (except for
hyphen (-), which would be CONTEXTO).
This way, a resolver can process labels in (logical) order, and would
not have to backtrack to the previous label if the current label
contains any R/AL/AN.
Erik
2008/2/14 Harald Tveit Alvestrand <harald at alvestrand.no>:
> FYI - here's the latest-and-greatst.
>
> ------------ Forwarded Message ------------
> Date: 14. februar 2008 02:00 -0800
> From: Internet-Drafts at ietf.org
> To: i-d-announce at ietf.org
> Subject: I-D Action:draft-alvestrand-idna-bidi-04.txt
>
> A New Internet-Draft is available from the on-line Internet-Drafts
> directories.
>
> Title : An updated IDNA criterion for right-to-left scripts
> Author(s) : H. Alvestrand, C. Karp
> Filename : draft-alvestrand-idna-bidi-04.txt
> Pages : 17
> Date : 2008-02-14
>
> The use of right-to-left scripts in internationalized domain names
> has presented several challenges. This memo discusses some problems
> with these scripts, and some shortcomings in the 2003 IDNA BIDI
> criterion. Based on this discussion, it proposes a new BIDI
> criterion for IDNA labels.
>
> A URL for this Internet-Draft is:
> http://www.ietf.org/internet-drafts/draft-alvestrand-idna-bidi-04.txt
>
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> ---------- Forwarded message ----------
> From: Internet-Drafts at ietf.org
> To: i-d-announce at ietf.org
> Date: Thu, 14 Feb 2008 02:00:01 -0800 (PST)
> Subject: I-D Action:draft-alvestrand-idna-bidi-04.txt
> A New Internet-Draft is available from the on-line Internet-Drafts directories.
>
> Title : An updated IDNA criterion for right-to-left scripts
> Author(s) : H. Alvestrand, C. Karp
> Filename : draft-alvestrand-idna-bidi-04.txt
> Pages : 17
> Date : 2008-02-14
>
> The use of right-to-left scripts in internationalized domain names
> has presented several challenges. This memo discusses some problems
> with these scripts, and some shortcomings in the 2003 IDNA BIDI
> criterion. Based on this discussion, it proposes a new BIDI
> criterion for IDNA labels.
>
> A URL for this Internet-Draft is:
> http://www.ietf.org/internet-drafts/draft-alvestrand-idna-bidi-04.txt
>
> To remove yourself from the I-D Announcement list, send a message to
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> You can also visit https://www1.ietf.org/mailman/listinfo/I-D-announce
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> Internet-Drafts are also available by anonymous FTP. Login with the
> username "anonymous" and a password of your e-mail address. After
> logging in, type "cd internet-drafts" and then
> "get draft-alvestrand-idna-bidi-04.txt".
>
> A list of Internet-Drafts directories can be found in
> http://www.ietf.org/shadow.html
> or ftp://ftp.ietf.org/ietf/1shadow-sites.txt
>
> Internet-Drafts can also be obtained by e-mail.
>
> Send a message to:
> mailserv at ietf.org.
> In the body type:
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> a MIME-compliant mail reader. Different MIME-compliant mail readers
> exhibit different behavior, especially when dealing with
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