CVS style argument parsing?

[Jeff Epler]

Don't use OptionGroups for each command.  Instead, you'll have the
OptionParser for the "main" arguments, and the option parser for each
command.

By using parser.disable_interspersed_args() you can make the parsing of
"-a b -c".split() handle "-a" and return "b -c".split() as the
positional args.  Then, depending on what b is, send -c to a separate
parser instance.

I don't see where disable_interspersed_args() is documented, but it's
right there in optparse.py

Jeff
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