In Coreutils v9.8 on macOS (I also tested on recent master, 5a00d0a65), `env` now adds the `__CF_USER_TEXT_ENCODING` var to the environment. This behavior is not present in v9.7. I suspect this may be due to commit c2e1816a53345ff9d5b89fc1fa566e87d0ee1b7e, but am unable to confirm as naive bisecting and reverting is confounded by failed builds.
./coreutils-bin/env -i /usr/bin/env # (empty) ./coreutils-bin/env -i ./coreutils/bin/env # has __CF_USER_TEXT_ENCODING /usr/bin/env -i ./coreutils-bin/env # has __CF_USER_TEXT_ENCODING
