Add support for R_STARTUP_FILE=script.R

HenrikBengtsson / startup

:wrench: R package: startup - Friendly R Startup Configuration

https://henrikbengtsson.github.io/startup/

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Closed HenrikBengtsson closed 2 years ago

HenrikBengtsson commented 2 years ago

Add support for

$ echo "message('hello')" > setup.R
$ R_STARTUP_FILE="setup.R" R --quiet
hello
>

as a convenient alternative to:

$ echo "message('hello')" > setup.R
$ R_STARTUP_INIT="source('setup.R')" R --quiet
hello
>