Specify arbitrary equality case insensitivity. #1959
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pfmoore
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Nov 22, 2025
sirosen
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woodruffw
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| - August 2014: This specification was approved through :pep:`440`. | ||
| - May 2025: Clarify that development releases are a form of pre-release when | ||
| they are handled. | ||
| - Nov 2025: Specify arbitrary equality case insensitivity. |
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| - Nov 2025: Specify arbitrary equality case insensitivity. | |
| - Nov 2025: Make arbitrary equality case insensitivity explicit. |
It was previously implied by only semantic details of the version text being excluded.
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Following https://discuss.python.org/t/clarify-that-arbitrary-equality-is-supposed-to-be-case-insensitive/104885 specify that for ASCII letters arbitrary equality MUST be case insensitive.
📚 Documentation preview 📚: https://python-packaging-user-guide--1959.org.readthedocs.build/en/1959/