\Sweaveopts error

Actually, I spoke too soon.  The files process without obvious error,
but keep.source=TRUE is ignored.  I have posted small files
test1.Rnw and test2.Rnw that can be used to demonstrate the
problems at:
   http://wwwmaths.anu.edu.au/~johnm/r/issues/

Sweave("test1")  ## includes SweaveOpts settings

Sweave("test2", keep.source=TRUE)
                               ## SweaveOpts settings have been removed.

Comments do not appear in the LaTeX file that results, the code
is reformatted and the graph from test1 goes into the working
directory.

Notice also the NA that mysteriously appears in the second
line of code in output .tex file test2.tex

John.

John Maindonald             email: john.maindonald at anu.edu.au
phone : +61 2 (6125)3473    fax  : +61 2(6125)5549
Centre for Mathematics&  Its Applications, Room 1194,
John Dedman Mathematical Sciences Building (Building 27)
Australian National University, Canberra ACT 0200.
http://www.maths.anu.edu.au/~johnm

On 26/11/2010, at 4:26 PM, John Maindonald wrote:

Yes, that has fixed the problem. (2010-11-24 r53659)

Thanks.

John Maindonald             email: john.maindonald at anu.edu.au
phone : +61 2 (6125)3473    fax  : +61 2(6125)5549
Centre for Mathematics&  Its Applications, Room 1194,
John Dedman Mathematical Sciences Building (Building 27)
Australian National University, Canberra ACT 0200.
http://www.maths.anu.edu.au/~johnm

On 25/11/2010, at 10:56 PM, Duncan Murdoch wrote:

On 25/11/2010 6:34 AM, John Maindonald wrote:

I have a file 4lmetc.Rnw, intended for inclusion in a LaTeX document,
that starts:

I think this may have been fixed in the patched version.  Could you give it a try to confirm?  If not, please send me a simplified version of the file, and I'll see what's going wrong.

Duncan Murdoch

\SweaveOpts{engine=R, keep.source=TRUE}
\SweaveOpts{eps=FALSE, prefix.string=snArt/4lmetc}

The attempt to process the file through Sweave generates the error:

Sweave("4lmetc")

Writing to file 4lmetc.tex
Processing code chunks ...
1 : keep.source term verbatim
Error in file(srcfile$filename, open = "rt", encoding = encoding) :
cannot open the connection
In addition: Warning message:
In file(srcfile$filename, open = "rt", encoding = encoding) :
cannot open file '4lmetc': No such file or directory

The same file processes through Stangle() without problems.
If I comment out the \Sweaveopts lines, there is no problem,
except that I do not get the options that I want.

This processed fine in R-2.11.1

sessionInfo()

R version 2.12.0 (2010-10-15)
Platform: x86_64-apple-darwin9.8.0/x86_64 (64-bit)

locale:
[1] C

attached base packages:
[1] stats     graphics  grDevices utils     datasets  grid      methods
[8] base

other attached packages:
[1] lattice_0.19-13     DAAG_1.02           randomForest_4.5-36
[4] rpart_3.1-46        MASS_7.3-8          reshape_0.8.3
[7] plyr_1.2.1          proto_0.3-8

loaded via a namespace (and not attached):
[1] ggplot2_0.8.8       latticeExtra_0.6-14

Is there a workaround?

John Maindonald             email: john.maindonald at anu.edu.au
phone : +61 2 (6125)3473    fax  : +61 2(6125)5549
Centre for Mathematics&   Its Applications, Room 1194,
John Dedman Mathematical Sciences Building (Building 27)
Australian National University, Canberra ACT 0200.
http://www.maths.anu.edu.au/~johnm