On Wed, Aug 20, 2014 at 4:52 PM, Gabriel Becker <gmbec...@ucdavis.edu> wrote: > Could do both to preserve bc... > > if(missing(format) || !nchar(format)) >
No, the problem is that the function behaves differently when format is missing than when it equals its default. Removing this difference necessarily changes behaviour and hence (at least in principle) breaks backward compatibility. Peter ______________________________________________ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel