[Rd] as.Date.character suggestion

[Peter Langfelder]

On Wed, Aug 20, 2014 at 4:52 PM, Gabriel Becker <gmbecker at 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