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Re: null namespace Re: Next steps for the ARIA syntax discussion

From: Robert J Burns <rob@robburns.com>
Date: Fri, 23 May 2008 22:36:14 +0000
Cc: www-tag@w3.org, "public-html@w3.org Group" <public-html@w3.org>
Message-Id: <93CE4049-939F-479B-9801-26A7B476D865@robburns.com>
To: Lachlan Hunt <lachlan.hunt@lachy.id.au>

HI Lachlan,

On May 23, 2008, at 10:17 AM, Lachlan Hunt wrote:

> Robert J Burns wrote:
>> To use your example of a SwimmingPoolControlML vocabulary, the  
>> "fill" attribute on the MyPoo element will be in the null  
>> namespace, while the "spcml:fill" attribute on the DIV element will  
>> be in the http://SwimmingPoolControlML.com/ (to coin the uri)  
>> namespace.  From the authors perspective, these are the exact same  
>> attributes. However, the work for the author is now doubled because  
>> they appear in two different namespaces.
> You are incorrectly assuming that an attribute in the null namespace  
> defined for use on elements in a particular namespace, can  
> automatically be used on other elements by putting the attribute  
> itself into a namespace.  This does not work.  To understand why,  
> let's look at a real example from XHTML

No, I never made that assumption.

Take care,
Received on Friday, 23 May 2008 22:37:05 UTC

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