I think this is a great patch. However, the testcase file is copied verbatim from the docopt-py repo. Would you mind offering the testcase-only patch to that repo first? I'm willing to do it if you dont want to. The test case actually does pass the Python version but fails the C++ version -- which I think makes it a GREAT testcase.

As I wrote above, the commit for docopt-py is awaiting his destiny. I have prepared those commits simultaneously.

Moreover, the day before yesterday I have written directly to Vladimir @keleshev about my two pull requests. But unfortunately, I have no reaction yet.

Is there an update on the status of this PR? I'm also interested by this feature.

I've posted a comment on the docopt mentioned by EVGVir. Hopefluly it'll get merged there, and then we can do it here :/

This actually doesn't quite work properly. -f and -b are added to the map instead of --foo and --bar. I really think this feature is useful for creating beautiful command-line interfaces!