33afaa061e
This PR adjusts the error message when `apply` fails to unify. It is clearer about distinguishing the term being applied and the goal, as well as distinguishing the "conclusion" of the given term and the term itself. --------- Co-authored-by: Joachim Breitner <mail@joachim-breitner.de>
53 lines
981 B
Text
53 lines
981 B
Text
/--
|
|
error: tactic 'apply' failed, could not unify the conclusion of `h`
|
|
True
|
|
with the goal
|
|
False
|
|
|
|
Note: The full type of `h` is
|
|
1 = 1 → True
|
|
h : 1 = 1 → True
|
|
⊢ False
|
|
-/
|
|
#guard_msgs in
|
|
example (h : 1 = 1 → True) : False := by
|
|
apply h
|
|
|
|
/--
|
|
error: tactic 'apply' failed, could not unify the type of `h`
|
|
1 = 1 → True
|
|
with the goal
|
|
2 = 2 → False
|
|
h : 1 = 1 → True
|
|
⊢ 2 = 2 → False
|
|
-/
|
|
#guard_msgs in
|
|
example (h : 1 = 1 → True) : 2 = 2 → False := by
|
|
apply h
|
|
|
|
/--
|
|
error: tactic 'apply' failed, could not unify the conclusion of `h`
|
|
1 = 1 → True
|
|
with the goal
|
|
2 = 2 → False
|
|
|
|
Note: The full type of `h` is
|
|
3 = 3 → 1 = 1 → True
|
|
h : 3 = 3 → 1 = 1 → True
|
|
⊢ 2 = 2 → False
|
|
-/
|
|
#guard_msgs in
|
|
example (h : 3 = 3 → 1 = 1 → True) : 2 = 2 → False := by
|
|
apply h
|
|
|
|
/--
|
|
error: tactic 'apply' failed, could not unify the type of `h`
|
|
True
|
|
with the goal
|
|
False
|
|
h : True
|
|
⊢ False
|
|
-/
|
|
#guard_msgs in
|
|
example (h : True) : False := by
|
|
apply h
|