lean4-htt/tests/lean/run/1380.lean
Joachim Breitner e33c32fb00
feat: ppOrigin to use MessageData.ofConst (#4362)
so that the pretty-printed origin is clickable, and avoid the
unnecessary `@`.

Particularly nice is this fix:
```diff
 /--
-info: [Meta.Tactic.simp.discharge] @bar discharge 
+info: [Meta.Tactic.simp.discharge] bar discharge 
       autoParam T _auto✝
-  [Meta.Tactic.simp.rewrite] { }:1000, T ==> True
-[Meta.Tactic.simp.rewrite] @bar:1000, U ==> True
+  [Meta.Tactic.simp.rewrite] T.mk:1000, T ==> True
+[Meta.Tactic.simp.rewrite] bar:1000, U ==> True
 -/
```
2024-06-05 11:00:34 +00:00

24 lines
919 B
Text
Raw Blame History

This file contains ambiguous Unicode characters

This file contains Unicode characters that might be confused with other characters. If you think that this is intentional, you can safely ignore this warning. Use the Escape button to reveal them.

variable (n v₁ v₂) (hv₁: v₁ < n + 1) (hv₂: v₂ < n + 1)
theorem foo (_: ¬ Fin.mk v₂ hv₂ = Fin.mk v₁ hv₁ ): True := trivial
/--
info: [Meta.Tactic.simp.unify] eq_self:1000, failed to unify
?a = ?a
with
⟨v₂, hv₂⟩ = ⟨v₁, hv₁⟩
[Meta.Tactic.simp.rewrite] Fin.mk.injEq:1000, ⟨v₂, hv₂⟩ = ⟨v₁, hv₁⟩ ==> v₂ = v₁
[Meta.Tactic.simp.unify] eq_self:1000, failed to unify
?a = ?a
with
v₂ = v₁
[Meta.Tactic.simp.discharge] Nat.ne_of_gt discharge ✅
v₁ < v₂
[Meta.Tactic.simp.rewrite] hv:1000, v₁ < v₂ ==> True
[Meta.Tactic.simp.rewrite] Nat.ne_of_gt:1000, v₂ = v₁ ==> False
-/
#guard_msgs in
set_option trace.Meta.Tactic.simp true in
example (hv: v₁ < v₂) : True := foo n v₁ v₂ _ _ (by simp (config := { decide := true }) only [hv, Fin.mk.injEq, Nat.ne_of_gt, Nat.lt_succ_iff])
#check Fin.mk.injEq