my comments on draft-ietf-idnabis-bidi-05
"Martin J. Dürst"
duerst at it.aoyama.ac.jp
Mon Sep 7 09:11:37 CEST 2009
On 2009/09/07 15:47, Matitiahu Allouche wrote:
> On October first, Martin J. Dürst asked:
> conditions 2/4: Why are BN (control characters) allowed in RTL but
> not in LTR?
> BN characters are invisible and should be banned as allowing phishing and
> violating the Label Uniqueness requirement. However, ZWJ and ZWNJ are
> classified as BN, and ZWNJ is required for the proper orthography of
> Persian which is written with the Arabic script, hence BNs are allowed in
> RTL labels.
That makes a lot of sense. But then shouldn't BN also be allowed for
LTR, because some of these characters are needed in Indic scripts?
> Shalom (Regards), Mati
> Bidi Architect
> Globalization Center Of Competency - Bidirectional Scripts
> IBM Israel
> Phone: +972 2 5888802 Fax: +972 2 5870333 Mobile: +972 52
#-# Martin J. Dürst, Professor, Aoyama Gakuin University
#-# http://www.sw.it.aoyama.ac.jp mailto:duerst at it.aoyama.ac.jp
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