I'm proposing to signal an error (from R >= 3.3.0) in such examples -- which do "work" in R 3.2.x and earlier :
> f <- NULL; body(f) <- quote(sin(a+1)); f function () sin(a + 1) <environment: 0x48f9798> > g <- NULL; formals(g) <- alist(x = pi, y=); g function (x = pi, y) NULL <environment: 0x4e6dfe8> > The proposal is that the underlying C code will signal an error when such replacement functions would create a function out of "something not a function". Martin Maechler, ETH Zurich ______________________________________________ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel
