[issue8888] Promote SafeConfigParser and warn about ConfigParser

[Łukasz Langa]

Łukasz Langa <lukasz at langa.pl> added the comment:

This issue is superseeded by issue #6517 (because the other has an actual patch).

Brett, shall we close this as duplicate and resolve the original?

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nosy: +brett.cannon, lukasz.langa

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<http://bugs.python.org/issue8888>
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