[R] commandArgs() prints warnings to STDOUT

[Vadim Ogranovich]

Dear R-Users,

I was glad to hear that there is an ongoing work to make R more easily
runnable as a batch. I'd like to raise two issues in this regards:

1. commandArgs() prints warnings to STDOUT rather than to STDERR, see
example below

$ cat foo.R
argv <- commandArgs()

$ R --no-save --no-restore --silent A < foo.R 2> /dev/null
ARGUMENT 'A' __ignored__
> argv <- commandArgs()
> 


2. It should be possible to turn off echoing of R commands, the '>' lines
above. Please let me know if it is already there.

Thanks, Vadim

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