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feat: make "type mismatch" error add numeric type ascriptions #5919

Merged
merged 2 commits into from
Nov 1, 2024
Merged

feat: make "type mismatch" error add numeric type ascriptions #5919

merged 2 commits into from
Nov 1, 2024

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kmill
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@kmill kmill commented Nov 1, 2024

Example:

example : 0 = (0 : Nat) := by
  exact Eq.refl (0 : Int)
/-
error: type mismatch
  Eq.refl 0
has type
  (0 : Int) = 0 : Prop
but is expected to have type
  (0 : Nat) = 0 : Prop
-/

@kmill
feat: make "type mismatch" error add numeric type ascriptions
5ead880 
Example:
```lean
example : 0 = (0 : Nat) := by
  exact Eq.refl (0 : Int)
/-
error: type mismatch
  Eq.refl 0
has type
  (0 : Int) = 0 : Prop
but is expected to have type
  (0 : Nat) = 0 : Prop
-/
```
@kmill kmill enabled auto-merge November 1, 2024 16:18
@kmill kmill added this pull request to the merge queue Nov 1, 2024
@github-actions github-actions bot added the toolchain-available A toolchain is available for this PR, at leanprover/lean4-pr-releases:pr-release-NNNN label Nov 1, 2024
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Mathlib CI status (docs):

  • ❗ Batteries/Mathlib CI will not be attempted unless your PR branches off the nightly-with-mathlib branch. Try git rebase fd08c9206097781c9bca8f61531de6a0479df0f8 --onto 0973ba3e4260327f69587813d6a67e5fade0c977. (2024-11-01 16:49:08)

Merged via the queue into leanprover:master with commit c7f5fd9 Nov 1, 2024
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