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

[STINNER Victor]

STINNER Victor added the comment:


New changeset 46e299c1536da541b9dbf76c0cb909bf8c79f589 by Victor Stinner in branch '3.5':
[3.5] bpo-30540, bpo-30523: Add --matchfile and --list-cases options to regrtest (#2250)
https://github.com/python/cpython/commit/46e299c1536da541b9dbf76c0cb909bf8c79f589


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