de31faa470
This PR adds support for case splitting on `match`-expressions with overlapping patterns to the `grind` tactic. `grind` can now solve examples such as: ``` inductive S where | mk1 (n : Nat) | mk2 (n : Nat) (s : S) | mk3 (n : Bool) | mk4 (s1 s2 : S) def g (x y : S) := match x, y with | .mk1 a, _ => a + 2 | _, .mk2 1 (.mk4 _ _) => 3 | .mk3 _, .mk4 _ _ => 4 | _, _ => 5 example : g a b > 1 := by grind [g.eq_def] ``` |
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