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Re: Proposal for isolation characters in Unicode and the unicode-bidi:isolate and unicode-bidi:plaintext definitions

From: Aharon (Vladimir) Lanin <aharon@google.com>
Date: Tue, 15 May 2012 10:24:17 +0200
Message-ID: <CA+FsOYZququJaJ_tSwLi+Td5U-G_WydDFjXEOX_x2hiZAYhu-w@mail.gmail.com>
To: Martin J. Dürst <duerst@it.aoyama.ac.jp>
Cc: W3C style mailing list <www-style@w3.org>, public-i18n-bidi@w3.org
I will reply substantively after taking www-style off the recipients. I
don't think that the CSS list is the right place to discuss the details of
the Unicode proposal.

Aharon

On Tue, May 15, 2012 at 10:10 AM, "Martin J. Dürst"
<duerst@it.aoyama.ac.jp>wrote:

> On 2012/05/15 5:06, Aharon (Vladimir) Lanin wrote:
>
>> Last week, I wrote up and Mark Davis submitted to the UTC a proposal (
>> http://goo.gl/K6qtV) for adding bidi isolation to Unicode. Here is the
>> basic proposal:
>>
>> --- start quote ---
>> Define three new Unicode formatting code points:
>> LRI: marks the beginning of a left-to-right isolate.
>> RLI: marks the beginning of a right-to-left isolate.
>> FSI: marks the beginning of a first-strong isolate.
>>
>> Each would be matched with a PDF.
>>
>
> It may be worth considering to create a new character to close these
> embeddings. Otherwise, older algorithms will close LRE/RLE/LRO/RLO
> embeddings/overrides prematurely.
>
> Another question: What's the relationship between this proposal and the
> new bidi control character that was proposed (I think by Apple) around last
> November's UTC?
>
> Regards,   Martin.
>
Received on Tuesday, 15 May 2012 08:25:12 GMT

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