command line parsing is storing some options multiple times

[ThosRTanner]

This little program here:

#!/usr/bin/env python

"""
Usage:
    test.py [--to=SITE]... [--] FILE...
    test.py [--to=SITE]... --config CONFIG [[--] FILE...]

Options:
    --config CONFIG     Configuration file.
    --to=SITE           Target site

"""

import docopt

options = docopt.docopt(__doc__)
print(options)

If I run test.py --to a --to b c, I get this output:

{'--': False,
 '--config': None,
 '--to': ['a', 'b', 'b'],
 'FILE': ['c']}

Notice the double occurrence of 'b'

[NickCrews]

Thanks for this! I can reproduce.

I don't actually understand the parser that well (I inherited maintainership but didn't write it), and I don't even use docopt anymore, so if you want this fixed, I think you will need to do the work. Sorry, and thank you!

[NickCrews]

To repro, add this to the end of testcases.docopt:

# https://github.com/jazzband/docopt-ng/issues/60
r"""
Usage:
    test.py [--to=SITE]... [--] FILE...
    test.py [--to=SITE]... --config CONFIG [[--] FILE...]

Options:
    --config CONFIG     Configuration file.
    --to=SITE           Target site
"""
$ prog --to a --to b c
{"--": false, "--config": null, "--to": ["a", "b"], "FILE": ["c"]}