Lean 4 fork for HoTT-compatible kernel extensions (Path types, transport, HITs). Maintained against upstream leanprover/lean4.
7fce8b5d1f
@Kha Note that I had to write the weird pattern ``` match_syntax stx with | `(notation:$prec $items* => $rhs) => expandNotationAux stx prec items rhs | `(notation $noprec* $items* => $rhs) => expandNotationAux stx none items rhs | _ => Macro.throwUnsupported ``` with the weird `$noprec*` to match the case where the optional precedence is not provided. I realized this is not a bug, but I guess most users will be puzzled by this behavior. If we had a kind for `notationItem`, I would be able to write ``` `(notation $items:notationItems* => $rhs) ``` |
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We are currently developing Lean 4. Lean 3 is still the latest official release. This repository contains work in progress.
Important. Unless you are one of our collaborators
- We strongly suggest you use Lean 3.
- Pull requests are not welcome.
- New issues are not welcome, and will be closed without any feedback.