i've been messing around with that because thanh is updating his stuff; i need to handle both hz and protruding and more -)
I must ask: would this mean adding Context support for the font expansion mentioned in his thesis? I've wanted to experiment with that but as far as I can tell it has previously required too much (for me) font manipulation outside of tex.
-Bill
It is true that generating extended font metrics (e.g. cmr10+5.tfm) was a bit deterrent thing for pdfTeX users. It was the reason that Thanh enabled (some months ago) use hz WITHOUT a need of generating extended metrics. But there was some problems with this pdftex version so it coused some delay. Now I believe it will be reflected in ConTeXt support. (I do not know what Hans thinks by "and more" but I reckon he means some code clean up). After that we will need: 1) new ConTeXt 2) new pdftex binary Vit Zyka