[issue28409] test.regrtest does not support multiple -x flags

[Serhiy Storchaka]

Serhiy Storchaka added the comment:

Indeed, previously -x in the middle of test names worked only by accident, because it was interpreted as the name of excluded test. Now it stops positional arguments.

Current behavior is explainable, but surprising. This part of argparse is not clear and can cause unexpected effects. I afraid that argparse is incorrectly used in tarfile.

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue28409>
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