cbind is not generic as claimed, omits labels where S has them (PR#239)

[Ross Ihaka]

On Thu, Aug 05, 1999 at 01:28:05PM +0200, ripley@stats.ox.ac.uk wrote:
> Could someone who can understands the c/rbind code please sort this out.
> (It looks pretty arcane to me, and surely should not be special-casing data
> frames.)

[ That would be a member of an empty subset of the developers. :-) ]

I can see what the problem is - we don't have the generic dispatch
mechanism in place.  I will add it.

I think that the special casing of data frames is needed because this
appears to be the (undocumented) S behaviour.  A data frame anywhere in
the argument list causes the result to be a data frame.

	Ross
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