Character-by-character font selection strategy

[Loran Kary]

I see there was a recent thread on fop-user called "Mixing Languages  
and Unicode".  I have the same problem.  The PDFs that I create with  
FOP could potentially contain any mix of languages and no one font  
will support them all.

I do not believe it is practical to try to implement a character-by- 
character font selection strategy in XSLT, even if I could figure out  
how to do it.  Nor do I believe it is practical to try to create some  
custom font that supports all languages and embed that in all my PDFs.

So my question is, what would it take to implement support for the  
font-selection-strategy property?  Has anyone looked at this or taken  
a crack at it?  Is there any chance that it might be implemented in  
the foreseeable future?

Thanks,
Loran Kary