Lean 4 fork for HoTT-compatible kernel extensions (Path types, transport, HITs). Maintained against upstream leanprover/lean4.
6f5bb3e896
This PR improves array and vector literal syntax by allowing trailing commas. For example, `#[1, 2, 3,]`. see: [Why Are Trailing Commas Not Allowed in Array Literals?](https://leanprover.zulipchat.com/#narrow/channel/270676-lean4/topic/Why.20Are.20Trailing.20Commas.20Not.20Allowed.20in.20Array.20Literals.3F) Note: we need to preserve the current name for the array syntax (`«term#[_,]»`) to avoid a bootstrapping issue. The `FromJson`/`ToJson` deriving handlers use array syntax in macros, and the stage0 version is used in most of the prelude. |
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