3367501511
Issue was reported at https://leanprover.zulipchat.com/#narrow/stream/270676-lean4/topic/Change.20in.20pattern.20matching.3B.20expected.20behaviour.3F/near/259059096 fixes #742
9 lines
283 B
Text
9 lines
283 B
Text
example : Int → Nat
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| (_ : Nat) => 0
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| Int.negSucc n => 0
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protected theorem Int.add_comm : ∀ a b : Int, a + b = b + a
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| (n : Nat), (m : Nat) => sorry
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| (_ : Nat), Int.negSucc _ => rfl
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| Int.negSucc _, (_ : Nat) => rfl
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| Int.negSucc _, Int.negSucc _ => sorry
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