The issue with as.character.factor() was reported and fixed recently.
https://bugs.r-project.org/bugzilla/show_bug.cgi?id=17141
The warning emitted from print.factor() is interesting. I'm not sure
why we are setting the class to NULL there. Could just create a new
character vector instead. Will l
Do I mess up something or is this a bug? If I define an S4 object
that contains "factor", all the tests indicate that it is a factor but
as.character.factor() complains of it being a non-factor...
> setClass("Foo", contains="factor")
> a <- new("Foo", factor(1:3))
> a
Object of class "Foo"
[1] 1
