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Lean 4 fork for HoTT-compatible kernel extensions (Path types, transport, HITs). Maintained against upstream leanprover/lean4.
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Kyle Miller 359f60003a
fix: use correct expr positions when delaborating match patterns (#4034) 
In the following, hovering over `true` in the infoview was showing
`Nat.succ y`.
```lean
#check fun (x : Nat) =>
  match h : x with
  | 0 => false
  | y + 1 => true
```
Now hovering over `true` shows `true`.

The issue was that SubExpr positions were not being tracked for
patterns, and the position for a pattern could coincide with the
position for a RHS, putting overwriting terminfo. Now the position given
to a pattern is correct and unique.

Refactors the `match` delaborator, makes it handle shadowing of `h :`
discriminant annotations correctly, and makes it use the standard
`withOverApp` combinator to handle overapplication.
2024-05-01 12:02:10 +00:00
.github chore: CI: pin macos-13 (#3992) 2024-04-27 20:58:22 +00:00
doc chore: ci to set “changes-stage0” label (#3979) 2024-04-24 07:08:34 +00:00
images
nix chore: test results as job summary (#3715) 2024-03-27 10:14:33 +00:00
script feat: script to summarize issues (#3952) 2024-04-24 06:11:07 +00:00
src fix: use correct expr positions when delaborating match patterns (#4034) 2024-05-01 12:02:10 +00:00
stage0 chore: update stage0 2024-04-29 05:46:11 +02:00
tests fix: use correct expr positions when delaborating match patterns (#4034) 2024-05-01 12:02:10 +00:00
.gitattributes chore: Do not hide stage0/src/stdlib_flags.h from diffs 2023-09-13 19:29:25 +02:00
.gitignore chore: update tests to account for .lake 2023-11-13 20:31:24 -05:00
.ignore chore: ignore stage0/ (for rg etc.) 2022-03-18 15:28:20 +01:00
CMakeLists.txt chore: update-stage0-commit cmake target (#3692) 2024-04-04 13:35:53 +00:00
CODEOWNERS chore: update code owners 2024-04-24 10:16:16 +02:00
CONTRIBUTING.md doc: Adjust contributor's docs to squash merging (#2927) 2023-11-21 10:13:43 +00:00
flake.lock chore: test results as job summary (#3715) 2024-03-27 10:14:33 +00:00
flake.nix chore: replace shell.nix with a devShell in flake.nix (#3717) 2024-03-21 13:24:01 +00:00
lean-toolchain doc: VS Code dev setup (#2961) 2023-11-30 08:35:03 +00:00
lean.code-workspace chore: add the lean4 extension to the vscode workspace (#3059) 2023-12-14 08:58:21 +00:00
LICENSE chore: remove LICENSE header that confused GitHub 2021-11-18 09:42:35 +01:00
LICENSES chore: add GMP license for now 2021-11-18 09:42:35 +01:00
README.md doc: remove nightly and other outdated references (#3027) 2024-01-25 13:53:36 +00:00
RELEASES.md fix: use correct expr positions when delaborating match patterns (#4034) 2024-05-01 12:02:10 +00:00

README.md

This is the repository for Lean 4.

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See Setting Up Lean.

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Please read our Contribution Guidelines first.

Building from Source

See Building Lean.