[UA-discuss] Mixing between RTL and LTR scripts

Abdalmonem Tharwat Galila agalila at mcit.gov.eg
Sat May 5 08:28:32 UTC 2018


Hi Andrew, Thanks for your below reply , I spend a lot of time try to do some mixing examples between RTL and LTR within the same label, what I got  is strange and unclear

Label as a result for ex.

عبدالمنعم-Abdo@سجل.مصر<mailto:عبدالمنعم-Abdo@سجل.مصر>

Abdoعبدالمنعم.مصر

… etc

Many issues you cannot imagine , also another thing using dot in RTL context or in LTR context will give you different labels although they must be the same.

To be away from the display issues we get if we mix RTL and LTR code points

in the same labels.



Take a look here link<https://tools.ietf.org/html/rfc5564>.







-----Original Message-----
From: UA-discuss [mailto:ua-discuss-bounces at icann.org] On Behalf Of Andrew Sullivan
Sent: Friday, May 04, 2018 2:57 PM
To: John Levine <john.levine at standcore.com>; Abdalmonem Tharwat Galila <agalila at mcit.gov.eg>
Cc: Ahmed Bakhat Masood (ahmedbakhat at pta.gov.pk) <ahmedbakhat at pta.gov.pk>; ua-discuss at icann.org; Ahmed Bakhat (ahmedbakhat at yahoo.com) <ahmedbakhat at yahoo.com>
Subject: Re: [UA-discuss] Mixing between RTL and LTR scripts



Also I don't know how you disallow script mixing for domain names. IDNA is label by label. The DNS is distributed, so there's no way to prevent mixing, is there?



A



--

Please excuse my clumbsy thums

----------

On May 4, 2018 05:36:02 "John Levine" <john.levine at standcore.com<mailto:john.levine at standcore.com>> wrote:



>>                I hope you all doing well, after back to TF-AIDN "Task Force Of Arabic

>>                IDNs", I got the following regards to mixing LTR and RTL texts within the

>>                same label.

>> -          Mixing between different scripts is not allowed for domain names

>> and email addresses

>> -          Numbers at the middle or at the end of the RTL domain name is

>> allowed.

>>

>> To be away from the display issues we get if we mix RTL and LTR code points

>> in the same labels.

>

> Thanks.  I think this clarifies the point that we have no advice on

> displaying e-mail addresses, since mailboxes are not domain names and are

> not labels and are not subject to IDNA2008.

>

> Regards,

> John Levine, john.levine at standcore.com<mailto:john.levine at standcore.com>

> Standcore LLC






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