In case a user (perhaps inadvertently, or for particular reasons) has POSIXLY_CORRECT set in their environment, make sure to clear it before calling optparse.optparse!() since we don't really want POSIXLY_CORRECT argument parsing.
In case a user (perhaps inadvertently, or for particular reasons) has POSIXLY_CORRECT set in their environment, make sure to clear it before calling optparse.optparse!() since we don't really want POSIXLY_CORRECT argument parsing.