62f14514da
This PR updates various error messages produced by or associated with built-in tactics and adapts their formatting to current conventions.
39 lines
891 B
Text
39 lines
891 B
Text
import Lean.PremiseSelection
|
|
|
|
/--
|
|
error: Type mismatch
|
|
Nat
|
|
has type
|
|
Type
|
|
of sort `Type 1` but is expected to have type
|
|
Lean.PremiseSelection.Selector
|
|
of sort `Type`
|
|
---
|
|
error: Failed to elaborate Nat as a `MVarId → Config → MetaM (Array Suggestion)`.
|
|
-/
|
|
#guard_msgs in
|
|
set_premise_selector Nat
|
|
|
|
/--
|
|
error: No premise selector registered. (Note the Lean does not provide a default premise selector, these must be installed by a downstream library.)
|
|
-/
|
|
#guard_msgs in
|
|
example : True := by
|
|
suggest_premises
|
|
trivial
|
|
|
|
set_premise_selector (fun _ _ => pure #[])
|
|
|
|
/-- info: Premise suggestions: [] -/
|
|
#guard_msgs in
|
|
example : True := by
|
|
suggest_premises
|
|
trivial
|
|
|
|
set_premise_selector Lean.PremiseSelection.random ⟨1,1⟩
|
|
|
|
-- This would be an extremely fragile test (select 10 random constants!)
|
|
-- so we do not use #guard_msgs.
|
|
example : True := by
|
|
suggest_premises
|
|
trivial
|