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fix: preserve nested f-string format specs - #486
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pawamoy merged 1 commit intoAug 31, 2026
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lprnmns
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August 31, 2026 14:56
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lprnmns
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Aug 31, 2026
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you are welcome sir |
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Description of the change
str(Expr)added a separating space when a container expression was nested in an f-string format specification. For example,f'{value:{{1, 2}}}'was rendered asf'{value:{ {1, 2}}}', which does not preserve the source AST’s format-spec segments. The fix keeps the separator for ordinary replacement fields but suppresses it for nested format fields, and adds a focused regression test.Validation on Python 3.12:
PYTHON_VERSIONS='' ./scripts/make testPYTHON_VERSIONS='' ./scripts/make checkUV_PROJECT_ENVIRONMENT=.venv uv run --no-sync uv build --allRelevant resources