Duncan Murdoch <[EMAIL PROTECTED]> writes: > >> > substitute(function(a=a) 1, list(a=quote(foo))) > >> function(a = a) 1 > > > > a bug for sure > > Yes.
Hmm... The issue is that the argument to `function` is a pairlist (not LANGSXP), and we don't recurse into those. Any R object can turn up as part of objects of mode "call" (by various methods, not least call() constructions), and I don't think we want to substitute into any recursive object. However, it's unlikely that pairlists would be used for anything other than function arguments, so I suppose we could change the behaviour (special-casing calls to `function` is an alternative). Luke? To wit: > mode(quote(function(x)1)[[1]]) [1] "name" > mode(quote(function(x)1)[[2]]) [1] "pairlist" > mode(quote(function(x)1)[[3]]) [1] "numeric" -- O__ ---- Peter Dalgaard Øster Farimagsgade 5, Entr.B c/ /'_ --- Dept. of Biostatistics PO Box 2099, 1014 Cph. K (*) \(*) -- University of Copenhagen Denmark Ph: (+45) 35327918 ~~~~~~~~~~ - ([EMAIL PROTECTED]) FAX: (+45) 35327907 ______________________________________________ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel
