Re: HTML charter and Timed tracks

On May 11, 2010, at 1:53 PM, Jonas Sicking wrote:

> On Tue, May 11, 2010 at 1:47 PM, Robert O'Callahan < 
> > wrote:
>> On Wed, May 12, 2010 at 4:17 AM, Sean Hayes  
>> <>
>> wrote:
>>> What seems to be an issue with TTML is that it is based on XML,  
>>> puts style
>>> attributes in its own namespace and extends CSS2 in a manner which  
>>> might
>>> conflict with the application of CSS3. Why this is such an issue  
>>> I'm not
>>> sure, given that the browser vendors' have public support for SVG,  
>>> which
>>> also has XML attributes for style in its own namespace, also  
>>> extends CSS in
>>> a manner that might conflict with CSS3 (and indeed far more  
>>> extensively than
>>> TTML does), and whose implementation includes pretty much all that  
>>> is needed
>>> for TTML.
>> SVG is not greatly loved by Mozilla developers, to be honest. The SVG
>> support in Gecko (and I think Webkit too) was contributed by  
>> volunteers, at
>> a time when there was no other proposed standard for vector  
>> graphics, no
>> resources available to develop an alternative, and SVG's flaws were  
>> not as
>> well understood as they are now. So, being no worse than SVG isn't
>> compelling.
> I also think that the SVG group isn't loving having attributes in
> separate namespaces. IIRC there has been discussions about allowing
> these attributes to live in either the separate namespace, or the null
> namespace.

Tangential note, but the few SVG attributes that are in a funny  
namespace are mostly not style-related.


Received on Tuesday, 11 May 2010 20:57:47 UTC