Unfortunately, I spoke too soon. model.frame calls formula <- terms(formula, data = data) if formula does not inherit from class "terms" as in your case.
And that is where the bad terms.labels attribute comes from. So, the fix I suggested won't work. But maybe you can just supply a terms object to model.frame that has correct term.labels. Chuck > On May 1, 2018, at 10:55 AM, Therneau, Terry M., Ph.D. via R-devel > <r-devel@r-project.org> wrote: > > Great catch. I'm very reluctant to use my own model.frame, since that locks > me into tracking all the base R changes, potentially breaking survival in a > bad way if I miss one. ______________________________________________ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel