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Re: [css3-writing-modes] Re-Summary of Tr in UTR#50 and text-orientation discussions

From: Eric Muller <emuller@adobe.com>
Date: Thu, 17 Oct 2013 10:21:37 -0700
Message-ID: <52601CA1.7070004@adobe.com>
To: <public-i18n-cjk@w3.org>
On 10/15/2013 5:23 AM, Koji Ishii wrote:
> 1. UTR50 says method A.

I think you are going too far. UTR50 provides an informative property. 
"informative" has a formal meaning in Unicode:

---
D35 Informative property: A Unicode character property whose values are 
provided for information only.

A conformant implementation of the Unicode Standard is free to use or 
change informative property values as it may require, while remaining 
conformant to the standard.
---

This leaves a very large degree of freedom to users of UTR50, with no 
*formal* obligation.

As for the *intent*, I think it is also informational. I read it as 
"here is one additional piece of data (the u or r after the T), that 
some users could find useful". There is no implication, from Unicode, 
that using that piece of data is better (or worse) than not using it.

If the property were to become more formal, Adobe would most likely ask 
that u/r part be dropped, or split in its own informal property.

Eric.
Received on Thursday, 17 October 2013 17:22:06 UTC

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