Namespace qualified attributes on elements?

Hi folks,  I thought we allowed namespace qualified attributes on DocBook elements, but that doesn t seem to be the case (except on namespace qualified extension elements within info wrappers).  Did I imagine that? Did we decide explicitly not to allow that?
Be seeing you,
norm

--
Norman Tovey-Walsh <>  https://nwalsh.com/
> Computer Science is the first engineering discipline in which the
> complexity of the objects created is limited solely by the skill of the
> creator, and not by the strength of raw materials.--B. Reid
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