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fix: revert creates natural metavariable goal #6145

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merged 3 commits into from
Nov 21, 2024
Merged

fix: revert creates natural metavariable goal #6145

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672e58b
fix: `revert` creates natural metavariable goal
JovanGerb Nov 21, 2024
61b1c6a
fix test
JovanGerb Nov 21, 2024
84a6636
.
JovanGerb Nov 21, 2024
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1 change: 1 addition & 0 deletions src/Lean/Meta/Tactic/Revert.lean
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Original file line number Diff line number Diff line change
Expand Up @@ -43,6 +43,7 @@ def _root_.Lean.MVarId.revert (mvarId : MVarId) (fvarIds : Array FVarId) (preser
finally
mvarId.setKind .syntheticOpaque
let mvar := e.getAppFn
mvar.mvarId!.setKind .syntheticOpaque
mvar.mvarId!.setTag tag
return (toRevert.map Expr.fvarId!, mvar.mvarId!)

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10 changes: 10 additions & 0 deletions tests/lean/run/revertMetavarKind.lean
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Original file line number Diff line number Diff line change
@@ -0,0 +1,10 @@
import Lean.Meta

open Lean Elab Tactic

example (n : Nat) : n = n := by
revert n
run_tac do
guard (← getMainDecl).kind.isSyntheticOpaque
intro n
rfl
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