2a67a49f31
This PR deprecates the tactics `simp_arith`, `simp_arith!`, `simp_all_arith` and `simp_all_arith!`. Users can just use the `+arith` option.
25 lines
509 B
Text
25 lines
509 B
Text
/--
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info: x y : Nat
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h : y = 0
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⊢ id (2 * x + y) = id (2 * x)
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-/
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#guard_msgs in
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example (x y : Nat) (h : y = 0) : id ((x + x) + y) = id (x + x) := by
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simp +arith only
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/-
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This is a test for a `simp` cache issue where the following incorrect goal was being
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produced.
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```
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... |- id (2*x + y) = id (x + x)
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```
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instead of
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```
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... |- id (2*x + y) = id (2*x)
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```
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-/
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trace_state
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simp [h]
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example (x y : Nat) (h : y = 0) : id (x + x) = id ((x + x) + y) := by
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simp +arith only
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simp [h]
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