os/strftime doesn't respect environment variables.

[amano-kenji]

%a of os/strftime can change according to locale.

Setting locale through environment variables like LANG and LC_ALL doesn't work.

Even though my system uses glibc, os/strftime doesn't respect environment variables.

[bakpakin]

I don't know if there is something Janet should do here besides expose setlocale - we don't do anything to set or unset locales from environment variables, so if your OS or libc is not doing it, then Janet isn't doing it either.

[bakpakin]

Add os/setlocale as a very bare bones wrapper around setlocale. I spent some time trying to make thread local setlocale work, but each platform has it's own way of doing it and it was hard to make it consistent.

Example with os/strftime:

(os/setlocale (os/getenv "LC_ALL" "C")) # call at script start
(print (os/strftime "%A %c" (os/time)))

[amano-kenji]

Thread local?