R devel - Oct 2009 - (PR#14012)

I think Rscript has a problem running files that have mac encodings
for newline (^M rather than ^J on linux).  If I source the file within
R, it works okay:
> source('j.R')
[1] "MEA_data/sernagor_new/CRX_P7_1.txt"

But if I run the file using Rscript on a linux box I get a strange
error message: 

$ Rscript --vanilla j.R
"
Execution halted

The example script j.R is at http://www.damtp.cam.ac.uk/user/sje30/j.R
rather than attaching it here.  I don't think there is anything
specific about the script though apart from the line endings.

Stephen

--please do not edit the information below--

Version:
 platform = x86_64-pc-linux-gnu
 arch = x86_64
 os = linux-gnu
 system = x86_64, linux-gnu
 status = 
 major = 2
 minor = 9.2
 year = 2009
 month = 08
 day = 24
 svn rev = 49384
 language = R
 version.string = R version 2.9.2 (2009-08-24)

Locale:
LC_CTYPE=en_GB.UTF-8;LC_NUMERIC=C;LC_TIME=en_GB.UTF-8;LC_COLLATE=en_GB.UTF-8;LC_MONETARY=C;LC_MESSAGES=en_GB.UTF-8;LC_PAPER=en_GB.UTF-8;LC_NAME=C;LC_ADDRESS=C;LC_TELEPHONE=C;LC_MEASUREMENT=en_GB.UTF-8;LC_IDENTIFICATION=C

Search Path:
 .GlobalEnv, package:stats, package:graphics, package:grDevices, package:utils,
package:datasets, package:methods, Autoloads, package:base

* On 2009-10-16 at 15:00 +0200 sje30 at damtp.cam.ac.uk
wrote:
> I think Rscript has a problem running files that have mac encodings
> for newline (^M rather than ^J on linux).  If I source the file within
> R, it works okay:
> > source('j.R')
> [1] "MEA_data/sernagor_new/CRX_P7_1.txt"
> 
> But if I run the file using Rscript on a linux box I get a strange
> error message: 
> 
> $ Rscript --vanilla j.R
> "
> Execution halted
I think you are right that Rscript is unhappy to handle files with CR
line terminators.  But IIUC, the purpose of Rscript is to enable R
script execution on unix-like systems like:

   #!/path/to/Rscript --vanilla
   print(1:10)

So then I'm not sure how useful it is for Rscript to handle such
files.  Why not convert to a more common and portable line termination
for your R script files?


+ seth

-- 
Seth Falcon | @sfalcon | http://userprimary.net/user