Is it possible to use repeated non-option-argument options?

ssh, tar, and other common tools allow for multiple non-option-argument options and act on their total count. (Implementing this with getopt is pretty trivial).

e.g. `tar -cvf` and `tar -cvvf` produce different output.

Is there a way to do this with CommandLine? I did not see anything promising in the documentation or examples/source code I perused, but I may have missed something.

(This might just be related to #594, but the issue there seems to be with repeated options with _required_ option-arguments)