How do I override a non-visible function in the package namespace?

Question

I basically want to change a non-visible function of a package. For visible functions, i.e. functions that have no asterix when methods is called on them, I fou

Answer 1

Use fixInNamespace. :)

fixInNamespace("predict.ar", "stats")

or

fixInNamespace("predict.ar", pos="package:stats")

---

(Several years later...)
From Nicholas H's comment: if you want to push some code to CRAN that depends upon an internal function from another package, it will throw a build warning and be rejected by R-core. If you want that internal function, you should just take a copy of it using the ::: operator and maintain it yourself.

predict.ar <- stats:::predict.ar