Dear R Core Team,
I learnt approx. two years ago in this mailing list that one can use the
following "trick" to get a (dotted pair)list of the ellipsis arguments
inside a function:
`substitute(...())`
Now my problem is that I can not find any occurrence of this call within
the R source - the most frequent solution there is
`substitute(list(...))[-1L] `
I would like to know if:
1) substitute(...()) is a trick or a feature in the language;
2) it will be supported in the future;
3) when (in which R version) it was introduced.
A hint on where to look for the machinery in the R source would be also
appreciated.
Regards,
Denes
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