f01471f620
This PR fixes the location of the error emitted when the `rintro` and `intro` tactics cannot introduce the requested number of binders. This patch adds a few `withRef` wrappers to invocations of `MVarId.intro` to fix error locations. Perhaps `MVarId.intro` should take a syntax object to set the location itself in the future; however there are a couple other call sites which would need non-trivial fixup. Closes #5659.
13 lines
450 B
Text
13 lines
450 B
Text
/-!
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# `rintro` and `intro` error message should point to excess arg
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Below, the errors should point to `h` because there is no lambda it binds.
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The error should not point to `hn`; it would be OKish to underline the whole line. -/
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example : (∃ n : Nat, n < 0) → False := by
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rintro ⟨n, hn⟩ h
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--^ collectDiagnostics
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example : (∃ n : Nat, n < 0) → False := by
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intro ⟨n, hn⟩ h
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--^ collectDiagnostics
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