[issue13337] IGNORE_CASE doctest option flag

[Justin Baum]

Change by Justin Baum <justinbaum5 at gmail.com>:


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keywords: +patch
nosy: +justinba1010
nosy_count: 3.0 -> 4.0
pull_requests: +22426
stage:  -> patch review
pull_request: https://github.com/python/cpython/pull/23547

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue13337>
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