[Rd] apparent problem in how PDF evaluates its arguments (PR#9035)

[Peter Dalgaard]

huber at ebi.ac.uk writes:

> Full_Name: Wolfgang Huber
> Version: 2.4.0 (2006-06-24 r38403)
> OS: i686-pc-linux-gnu 
> Submission from: (NULL) (134.60.107.160)
> 
> 
> The simple example script below fails in the call to makepdf1 with
>   "Error in eval(expr, envir, enclos) : object "p" not found"
> 
> I believe this is a problem in the pdf() function, having to do with the line:
>  lapply(Call, function(x) eval.parent(x, 2))

Yup. Should be 3, as far as I can see. Or maybe better

  pframe <- parent.frame()
  new <- lapply(Call, function(x) eval(x, pframe))

> The error does not happen, for example, when "pdf" is replaced by "png".
> 
> options(error=recover)
> ## debug(pdf)
> 
> makepdf1 = function(p=1) {
>   pdf("test.pdf", pointsize=p)
>   plot(1:7)
>   dev.off()
> }
> 
> z=1
> makepdf2 = function() {
>   pdf("test.pdf", pointsize=z)
>   plot(1:7)
>   dev.off()
> }
> 
> makepdf2()
> makepdf1()
> 
> 
> sessionInfo()
> 
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-- 
   O__  ---- Peter Dalgaard             Øster Farimagsgade 5, Entr.B
  c/ /'_ --- Dept. of Biostatistics     PO Box 2099, 1014 Cph. K
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