I took a stab at this, see attached PR.

I was able encode the first two cases described by @tarek, but not the first one because `_parse_command_opts` doesn't have visibility to the list of global options that have already been parsed.

Note:

I had to move `log.set_verbosity(self.verbose)` after the call to `_parse_command_opts` in order to correctly apply the verbosity level after all command options are parsed. I think there should be a better way to handle this case, maybe by creating a `verbose` setter that re-runs `log.set_verbosity` every time `verbose` value is updated.