c07948a168
This PR adds support for the `simp?` and `dsimp?` tactics in conversion mode. Closes #6164
29 lines
577 B
Text
29 lines
577 B
Text
/-!
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# `simp?` in conversion mode
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Tests that `simp?` and `dsimp?` work properly in `conv` mode: namely, that each displays the
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appropriate suggestion and applies the corresponding simplification to the focused expression.
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-/
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attribute [simp] Nat.two_mul
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/--
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info: Try this: simp only [Nat.two_mul]
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-/
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#guard_msgs in
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example (n : Nat) : 123 + 2 * n = 123 + (n + n) := by
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conv =>
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enter [1, 2]
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simp?
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@[simp] def foo (n : Nat) := n + 1
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/--
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info: Try this: dsimp only [foo]
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-/
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#guard_msgs in
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example (n : Nat) : foo n = n + 1 := by
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conv =>
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lhs
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dsimp?
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