# Check for unknown options in command-line
# Check for unknown options in "mariabackup" group
# Check for unknown options in "xtrabackup" group
# Check for unknown options in "mariadb-backup" group
# Check for options overwriting
# Check if uknown options that follow --mysqld-args are ingored
# Check if [mariadb-client] group is not loaded (MDEV-22894)
# Check if --help presents