I believe that Brian had planned to implement this as part of the ViewConfig features that he was working on. Unfortunately I don't think that this got documented in time for the 3.0.0.Final release, however you can see it as a work in progress here.
The link to github is broken...
is it already included on the latest seam-faces releases?
i've read the docs but there isn't no reference to this
issue. i'm taking Andrew's work-around for now
but it would be great to have a general solution.
I think this must be quite a common use case.