[Rd] External special functions (SPECIALSXP)

Peter Danenberg pcd at roxygen.org
Wed May 25 19:10:38 CEST 2011

Is it possible to define an external special function (SPECIALSXP)?
I'm trying to do some language-level work, and don't want my arguments
evaluated before they hit C.

It looks like the only way to define a SPECIALSXP is by using XX0 in
the `eval' field of R_FunTab; is there any way to make this applicable
to externally defined functions?

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