Revert PEP 604 union syntax to Union[]/Optional[] for Python 3.9 compatibility#1228

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bact merged 14 commits intodevfrom

copilot/revert-pep604-union-types

Jan 27, 2026

Commits on Jan 26, 2026

Initial plan
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Convert PEP 604 union syntax to Union/Optional in khavee/core.py

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Convert PEP 604 union syntax to Union/Optional in parse module

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Convert PEP 604 union syntax to Union/Optional in 6 files

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Convert PEP 604 union type syntax to Union/Optional in tag module files

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Convert PEP 604 union syntax to Union/Optional in tokenize modules

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Convert PEP 604 union syntax to Union/Optional in translate module

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Convert PEP 604 union syntax to Union/Optional in transliterate modules

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Convert PEP 604 union syntax to Union/Optional for Python 3.9 compatibility

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Fix remaining PEP 604 union syntax in util and other modules
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Revert PEP 604 union syntax to Union[] and Optional[] for Python 3.9 compatibility

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Commits on Jan 27, 2026