"Henrik Bengtsson" <[EMAIL PROTECTED]> writes:
> Hi,
>
> I've got the following two versions of R on WinXP:
>
> A) R Version 2.3.0 Under development (unstable) (2006-02-02 r37243)
> B) R Version 2.3.0 Under development (unstable) (2006-03-27 r37579)
>
> and a the following "test.R" script:
>
> foo <- function(path, ...) { print(path) }
> bar <- function(x, ...) foo(...)
> wow <- function(x, ...) capture.output(foo(...))
> bar(1, path=2)
> print(wow(1, path=2))
>
> With A, I get:
>
> > source("test.R")
> [1] 2
> [1] "[1] 2"
>
> But with B, I get
> > source("test.R")
> [1] 2
> Error in print(path) : argument "path" is missing, with no default
>
> Further debugging led me to the following test2.R script:
>
> foo <- function(path, ...) { print(path) }
> bar <- function(x, ...) foo(...)
> wow <- function(x, ...) yaa(foo(...))
> yaa <- function(...) substitute(list(...))
> bar(1, path=2)
> print(wow(1, path=2))
>
> With A, I get
>
> > source("test2.R")
> [1] 2
> list(foo(...))
>
> But with B, I get
>
> > source("test.R")
> [1] 2
> list(foo())
>
> Note that '...' is missing in the latest version. I don't think this is
> wanted.
I suspect that you're right. Just for reproduction purposes: The
script is not needed, and the whole thing simplifies to the two lines:
yaa <- function(...) substitute(list(...))
yaa(foo(...))
which gives list(foo()) in 2.3.0 alpha and used to give list(foo(...)).
--
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
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