> And for these: > > extern void UNIMPLEMENTED_TYPE(const char *s, SEXP x) ; > extern SEXP csduplicated(SEXP) ; Fortunately for my version, I don't actually need those, but I'll see if I can find a friendly member of R-core who might be willing to review a patch. Hadley -- Chief Scientist, RStudio http://had.co.nz/