Show repeated option metavars in help - #3839
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Fixes #3652.
Automatically append
...to generated option metavars whenmultiple=True, so help output communicates that an option may be repeated (for example,--foo TEXT...). Added a help-output regression test.Tests:
python -m pytest tests/test_options.py -q(647 passed). The full suite also exposed two unrelated sandbox subprocess-handle failures.