leanprover-community / leanprover-community/mathlib4
calc? emits weird dagger characters
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Description
'import Mathlib.Tactic.Widget.Calc
example : ∀ n : Nat, n + 0 = n := by
intro _
calc?'
Output: calc n✝ + 0 = n✝ := by sorry —
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Research direction
Reproduce the example using import Mathlib.Tactic.Widget.Calc and the shown calc? command, then inspect the tactic-widget implementation reached by that import. Done means the generated expression no longer contains dagger characters such as n✝ while preserving the inferred variable references.
Written by the indexing model from the issue text.
Assessment
- Domain
- devtools
- Issue type
- Bug
- Difficulty
- 3/5
- Estimated time
- 1-2 days
- Activity status
- Quiet
- Clarity
- Mostly clear
- Newbie friendliness
- 55/100