Lean 4 fork for HoTT-compatible kernel extensions (Path types, transport, HITs). Maintained against upstream leanprover/lean4.
5dea2142c3
This PR improves `Expr.instantiateBetaRevRange` to be more efficient in the common case where lambda functions are not being instantiated, and it increases expression sharing in applications. The motivation is that we would like to use this function more pervasively in elaboration, so that users do not need to write `dsimp only` as frequently in applications that involve higher-order functions, plus `inferType` uses it so there is a UX inconsistency when the elaborator is not using it. |
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