By default, callr::rcmd_safe_env suppresses the ability
to open a browser window. This is the default execution environment within
callr::r. However, opening a browser is expected
behavior within the learnr package and should not be suppressed.
safe_env()A list of envvars, modified from callr::rcmd_safe_env().
safe_env()
#> CYGWIN R_TESTS R_PDFVIEWER
#> "nodosfilewarning" "" "false"