Re: Last call comments on XML Binding Language (XBL) 2.0

Ian Hickson:
> Indeed. I've already received requests from various people to make an 
> "HTML5" version of XBL that has its own custom format and custom parser 
> with defined error handling instead of using XML. The main reason for not 
> doing it is that a custom parser is a high implementation burden and a 
> high specification burden -- having written the HTML5 parsing algorithm, I 
> have no intention of doing it again if I can avoid it.
> 
> However, this doesn't apply to xml:id, since the implementation burden for 
> supporting 'id' instead of 'xml:id' is negligible (and even possibly 
> lower, since you don't have to worry about what happens if someone sets 
> 'xml:id' on an element in SVG, HTML, or MathML and thus gives an element 
> _two_ IDs), and the specification burden is about one line of prose.

Note that due to DOM 3 Core’s Element.setIdAttribute, implementations
need to handle multiple IDs on elements anyway.

-- 
Cameron McCormack, http://mcc.id.au/
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