[Rd] non-interactive R_tryEval does not return

[Martin Morgan]

...at least I think that is what happens, at least on some
configurations. Here's a repeatable example:

cd R_HOME/tests/Embedding
touch tmp.R
make tryEval

and then (correct)

> ./tryEval --slave
Error in sqrt("") : Non-numeric argument to mathematical function
Caught an error calling sqrt(). Try again with a different argument.
[1] 3

versus (non-interactive; no return)

> ./tryEval --slave < tmp.R
Error in sqrt("") : Non-numeric argument to mathematical function
Execution halted

> echo "sessionInfo()" | R --slave
R version 2.5.0 Under development (unstable) (2007-02-21 r40774) 
x86_64-unknown-linux-gnu 

locale:
LC_CTYPE=en_US;LC_NUMERIC=C;LC_TIME=en_US;LC_COLLATE=en_US;LC_MONETARY=en_US;LC_MESSAGES=en_US;LC_PAPER=en_US;LC_NAME=C;LC_ADDRESS=C;LC_TELEPHONE=C;LC_MEASUREMENT=en_US;LC_IDENTIFICATION=C

attached base packages:
[1] "stats"     "graphics"  "grDevices" "utils"     "datasets"  "methods"  
[7] "base"
-- 
Martin Morgan
Bioconductor / Computational Biology
http://bioconductor.org