Lean 4 fork for HoTT-compatible kernel extensions (Path types, transport, HITs). Maintained against upstream leanprover/lean4.
9f6bbfa106
luckily the necessary functionality already exists in the form of `addPPExplicitToExposeDiff`. But it is not cheap, and we should not run this code when the error message isn’t shown, so we should do this lazily. We already had `MessageData.ofPPFormat` to assemble the error message lazily, but it was restricted to returning `FormatWithInfo`, a data type that doesn’t admit a nice API to compose more complex messages (like `Format` or `MessageData` has; an attempt to fix that is in #3926). Therefore we split the functionality of `.ofPPFormat` into `.ofFormatWithInfo` and `.ofLazy`, and use `.ofLazy` to compute the more complex error message of `apply`. Fixes #3232. --------- Co-authored-by: David Thrane Christiansen <david@davidchristiansen.dk> Co-authored-by: Wojciech Nawrocki <wjnawrocki@protonmail.com> |
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