[issue30523] regrtest: add --list-cases option to only display test case identifiers

[STINNER Victor]

Changes by STINNER Victor <victor.stinner at gmail.com>:


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title: unittest: add --list-tests option to only display the list of test names, don't run tests -> regrtest: add --list-cases option to only display test case identifiers

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue30523>
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