Are CCL programs phased out?

[David Kastrup]

I'm currently considering writing a coding system "midi" which would
basically turn byte sequences into strings like "(note-on 4 23)" so that
you'd get one Midi event per read.  Now grepping for define-ccl-program
makes it appear as if the only uses are in lisp/obsolete/pgg-parse.el
and lisp/language/ethiopic.el.

What's up with that?

-- 
David Kastrup