f74e21e302
This PR ensures `grind` does not fail when applying `injection` to a hypothesis that cannot be cleared because of forward dependencies.
7 lines
208 B
Text
7 lines
208 B
Text
/-!
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`grind` injection step does not fail at `clear`.
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-/
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example (n m : Nat) (a : Fin n) (b : Fin m) (h : ∃ h : [n] = [m], (List.cons.inj h).1 ▸ a = b) :
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(List.cons.inj h.1).1 ▸ a = b := by
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grind
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