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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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Richard Copley 4fe0259354
feat: exact?%: do not report suggestions which do not close the goal (#3974) 
This makes `exact?%` behave like `by exact?` rather than `by apply?`.

If the underlying function `librarySearch` finds a suggestion which
closes the goal, use it (and add a code action). Otherwise log an error
and use `sorry`. The error is either
```text
`exact?%` didn't find any relevant lemmas
```
or
```text
`exact?%` could not close the goal. Try `by apply` to see partial suggestions.
```

---


[Zulip](https://leanprover.zulipchat.com/#narrow/stream/287929-mathlib4/topic/Useful.20term.20elaborators/near/434863856)

---------

Co-authored-by: Scott Morrison <scott.morrison@gmail.com>
2024-04-24 06:07:11 +00:00
.github chore: prevent stage0 changes via the merge queue (#3971) 2024-04-23 09:47:27 +00:00
doc feat: improve @[deprecated] attr (#3968) 2024-04-23 17:00:32 +00:00
images
nix chore: test results as job summary (#3715) 2024-03-27 10:14:33 +00:00
script feat: trace.profiler export to Firefox Profiler (#3801) 2024-04-15 12:13:14 +00:00
src feat: exact?%: do not report suggestions which do not close the goal (#3974) 2024-04-24 06:07:11 +00:00
stage0 chore: update stage0 2024-04-19 14:31:23 +00:00
tests feat: exact?%: do not report suggestions which do not close the goal (#3974) 2024-04-24 06:07:11 +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: upstream Std material from Data/List|Array/Init (#3975) 2024-04-24 03:23:25 +00:00
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 feat: make pp.mvars false pretty print universe mvars as _ (#3978) 2024-04-23 20:34:48 +00:00

README.md

This is the repository for Lean 4.

About

Installation

See Setting Up Lean.

Contributing

Please read our Contribution Guidelines first.

Building from Source

See Building Lean.