nds-client-config exits with code 0 regardless of arguments

The nds-client-config tool exist with code 0 regardless of 'success' or not:

$ nds-client-config --blah
unrecognized argument --blah - use --help for help.
$ echo $?
0

It would be nice if that tool exited with a non-zero code on failure, mainly for testing SWIG-related integrations.