lean4-htt/tests/lean/run/issue8490.lean
Marc Huisinga 9d427fdfcf
feat: "try this" messages with support for interactivity (#10524)
This PR adds support for interactivity to the combined "try this"
messages that were introduced in #9966. In doing so, it moves the link
to apply a suggestion to a separate `[apply]` button in front of the
suggestion. Hints with diffs remain unchanged, as they did not
previously support interacting with terms in the diff, either.

<img width="379" height="256" alt="Suggestion with interactive message"
src="https://github.com/user-attachments/assets/7838ebf6-0613-46e7-bc88-468a05acbf51"
/>
2025-10-13 13:39:03 +00:00

21 lines
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Text

inductive Aexp where
| val : Int → Aexp
| plus : Aexp → Aexp → Aexp
@[simp]
def asimp_const : Aexp -> Aexp
| .val x => .val x
| .plus x y => .plus x y
@[simp]
def optimal' (a : Aexp) : Prop :=
optimal' a ∧ True
inductive_fixpoint
/--
info: Try this:
[apply] simp_all only [asimp_const, reduceCtorEq]
-/
#guard_msgs in
example (x y : Aexp) (k : Int) (h : asimp_const (.val k) = x.plus y) : optimal' x := by
simp_all?