Documentation

Lean.Meta.Tactic.Revert

source
def Lean.MVarId.revert (mvarId : MVarId) (fvarIds : Array FVarId) (preserveOrder clearAuxDeclsInsteadOfRevert : Bool := false) :
MetaM (Array FVarId × MVarId)

Revert free variables fvarIds at goal mvarId.

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      source
      def Lean.MVarId.revertAfter (mvarId : MVarId) (fvarId : FVarId) :
      MetaM (Array FVarId × MVarId)

      Reverts all local declarations after fvarId.

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