Libffi and printf

[Jos Kuijpers]

Folks,

Two things: how active is libffi development? The last update (3.0.9) was
from december 2009, latest blogpost januari 2010.

And further, is there any known, working code for adding an parameter type
to printf?
I want to write some obj_printf(fmt,.), that searches for a %@, replaces the
@ with an s, and replaces the corresponding argument from the varg-list with
a string.

With kind regards,

Jos