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leanprover / lean4 Public

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feat: make `Option.decidableEqNone` coherent with `Option.instDecidableEq` #7922

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feat: make `Option.decidableEqNone` coherent with `Option.instDecidableEq`

feat: make `Option.decidableEqNone` coherent with `Option.instDecidableEq` #7922

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