[Rd] Characters subsetted with NA (was: Several R vs S-Plus issues)

[David Brahm]

Peter Dalgaard <p.dalgaard@biostat.ku.dk> wrote:
> Basically, we should have a *real* NA for string variables, distinct from
> the character string "NA" and propagating like any other NA's.

I could go for that.  How would it appear when cat()ed or print()ed?

		      -- David Brahm (brahm@alum.mit.edu)
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