I wrote a new taylorinfo function and attached it to SF bug 904522.
My code uses 'while', but I see that 'while' is unknown to hayat.lisp.
At least building under sbcl says so.
I'm guessing this has something to do with the build process. Maybe
somebody can make 'while' available to hayat for me --- I don't
understand most of the build process, and would likely make a mess.
Barton