[issue30349] Preparation for advanced set syntax in regular expressions

[Serhiy Storchaka]

Serhiy Storchaka <storchaka+cpython at gmail.com> added the comment:


New changeset 05cb728d68a278d11466f9a6c8258d914135c96c by Serhiy Storchaka in branch 'master':
bpo-30349: Raise FutureWarning for nested sets and set operations (#1553)
https://github.com/python/cpython/commit/05cb728d68a278d11466f9a6c8258d914135c96c


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