[issue10680] argparse: titles and add_mutually_exclusive_group don't mix (even with workaround)

[Roundup Robot]

Roundup Robot <devnull at psf.upfronthosting.co.za> added the comment:

New changeset 5c5c6a28b349 by Łukasz Langa in branch 'default':
A ricochet from fixing #10680: http://http://example.com/ no longer reports
http://hg.python.org/cpython/rev/5c5c6a28b349

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nosy: +python-dev

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