GeezerVison is showing github.com — [3.15] gh-156444: Fix a negated character set with IGNORECASE and LOCALE (GH-156445) by miss-islington · Pull Request #156456 · python/cpython
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miss-islington
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Aug 27, 2026
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edited by bedevere-app
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charset_loc_ignore() tested the whole set once per locale case and took
the disjunction, which complements a set before closing it under case
instead of after: [bc] matched b'B', but so did [^bc]. Match both cases
of the character against every set member instead.
(cherry picked from commit 6671d27)
Co-authored-by: Serhiy Storchaka [email protected]
Co-authored-by: Claude Opus 5 (1M context) [email protected]
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…LE (pythonGH-156445)
charset_loc_ignore() tested the whole set once per locale case and took
the disjunction, which complements a set before closing it under case
instead of after: [bc] matched b'B', but so did [^bc]. Match both cases
of the character against every set member instead.
(cherry picked from commit 6671d27)
Co-authored-by: Serhiy Storchaka <[email protected]>
Co-authored-by: Claude Opus 5 (1M context) <[email protected]>
This was referenced Aug 27, 2026
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