> On 3 May 2018, at 16:52 , Mark van der Loo <mark.vander...@gmail.com> wrote:
> 
> This question is better aimed at the r-help mailinglist as it is not about
> developing R itself.

Um, no... People there might well send you back here.

As for the original question, there are also variations over

dddlen <- function(...)length(match.call(expand.dots=FALSE)$...)



-- 
Peter Dalgaard, Professor,
Center for Statistics, Copenhagen Business School
Solbjerg Plads 3, 2000 Frederiksberg, Denmark
Phone: (+45)38153501
Office: A 4.23
Email: pd....@cbs.dk  Priv: pda...@gmail.com

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