439e6a85d3
This PR fixes a bug in `sym =>` interactive mode where goals whose metavariable was assigned by `isDefEq` (e.g. via `apply Eq.refl`) were not pruned. `pruneSolvedGoals` previously only filtered out goals flagged as inconsistent, so an already-assigned goal would linger as an unsolved goal. It now also removes goals whose metavariable is already assigned. Co-authored-by: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
21 lines
482 B
Text
21 lines
482 B
Text
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example (p q : Prop) : p → q → p ∧ q := by
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sym =>
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intro hp hq
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apply And.intro
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apply hp
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apply hq
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register_sym_simp chainSimp where
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post := ground >> rewrite [Nat.add_zero, Nat.zero_add]
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example (x y : Nat) (h : x ≤ y) : (1 - 1) + x ≤ y + (1 + 0) := by
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sym =>
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simp chainSimp
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-- In the following tactic the goal is closed while preprocessing the target
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lia
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example : ∃ x, x = a := by
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sym =>
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apply Exists.intro
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apply Eq.refl
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