0db4ac18e5
This PR modifies the app elaborator to beta reduce arguments while substituting them into expected types for later arguments. This makes it consistent with `inferType` and `instantiateMVars`, which both beta reduce substitutions. In particular, this change ensures that the app elaborator behaves as if it creates metavariables for each parameter and assigns elaborated arguments to the metavariables. **Breaking change:** tactic proofs may need to be modified to remove unnecessary steps, e.g. `dsimp only` steps that were previously for beta reductions.
24 lines
378 B
Text
24 lines
378 B
Text
/--
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error: Invalid projection: Type of
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x✝
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is not known; cannot resolve projection `1`
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---
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error: unsolved goals
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case refine'_1
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⊢ Sort ?u.4
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case refine'_2
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⊢ Sort ?u.3
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case refine'_3
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⊢ ?refine'_1
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case refine'_4
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⊢ ?refine'_1
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case refine'_5
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⊢ ¬?m.10 ?refine'_3 = ?m.10 ?refine'_4
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-/
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#guard_msgs in
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example : False := by
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refine' absurd (congrArg (·.1) sorry) _
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