lean4-htt/tests/lean/run/4251.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

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Text

/--
info: Try this:
[apply] simp only [ha, Nat.reduceEqDiff, imp_self]
-/
#guard_msgs in
theorem foo₁ (a : Nat) (ha : a = 37) :
(match h : a with | 42 => by simp_all | n => n) = 37 := by
simp? [ha]
theorem foo₂ (a : Nat) (ha : a = 37) (hb : b = 37) :
(match h : a with | 42 => by simp_all | n => n) = b := by
simp only [ha, Nat.reduceEqDiff, imp_self]
guard_target =ₛ 37 = b
rw [hb]