This PR simply skips checking that learnr can control the language used for R's messages in known scenarios where the LANGUAGE environment variable is ignored. Currently this is true for LC_ALL="C" and with newer versions of glibc also for LC_ALL="C.UTF-8".
In an earlier iteration, I tried directly testing that if we are able to change the language of R message – by trying and succeeding or failing – but this create many more problems than it solved.
Fixes #800
Note that in the future we could maybe use Sys.setLanguage(), but this was added in R 4.2.0.
This PR simply skips checking that learnr can control the language used for R's messages in known scenarios where the
LANGUAGEenvironment variable is ignored. Currently this is true forLC_ALL="C"and with newer versions of glibc also forLC_ALL="C.UTF-8".In an earlier iteration, I tried directly testing that if we are able to change the language of R message – by trying and succeeding or failing – but this create many more problems than it solved.
Fixes #800
Note that in the future we could maybe use
Sys.setLanguage(), but this was added in R 4.2.0.