I uploaded an incomplete patch that might address the issue so it can be discussed.

This patch introduces 'greedy_star', a new constructor parameter to ArgumentParser that makes "*" positional arguments behave as expected in the test case.

The patch doesn't yet update the documentation and doesn't include test cases, but I'll be glad to provide those changes in a next version.

It is admittedly hackish, but I haven't found a better solution so far. Looking forward for your comments.