l10n: LC_ALL is ignored #8922
Description
When setting the locale with LC_ALL, we ignore the specified locale and always use the English locale:
$ LC_ALL=fr_FR.UTF-8 cargo run -q sleep --help
Pause for NUMBER seconds.
Usage: sleep NUMBER[SUFFIX]...
sleep OPTION
// snipped the rest of the output
It works fine with LANG:
$ LANG=fr_FR.UTF-8 cargo run -q sleep --help
Faire une pause de NOMBRE secondes.
Utilisation: sleep NOMBRE[SUFFIXE]...
sleep OPTION
// snipped the rest of the output
GNU supports both environment variables:
$ LC_ALL=fr_FR.UTF-8 sleep --help
Utilisation : sleep NOMBRE[SUFFIXE]...
ou : sleep OPTION
// snipped the rest of the output
$ LANG=fr_FR.UTF-8 sleep --help
Utilisation : sleep NOMBRE[SUFFIXE]...
ou : sleep OPTION
// snipped the rest of the output