Version
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1.01k
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v4.9.0 | Compiler, runtime, and FFI | Fixes segfault in old compiler from mishandling noConfusion applications. | 2903 |
v4.9.0 | Compiler, runtime, and FFI | Fixes bug in constant folding in the compiler. | 4311 |
v4.9.0 | Compiler, runtime, and FFI | Documents the runtime memory layout for inductive types. | 3915 |
v4.9.0 | Lake | Makes trace reading more robust, rebuilding if trace files are invalid/unreadable. Backwards-compatible with numeric traces. | 4518 |
v4.9.0 | Lake | Adds support for docstrings on require commands. | 4057 |
v4.9.0 | Lake | Improves hovers for family_def and library_data commands. | 4088 |
v4.9.0 | Lake | Adds default README.md to package templates. | 4147 |
v4.9.0 | Lake | Extends lake test help page, adds lake lint, supports specifying test/lint drivers, library test drivers, etc. | 4261 |
v4.9.0 | Lake | Adds lake pack and lake unpack for archiving build artifacts. | 4270 |
v4.9.0 | Lake | Switches manifest format to semantic versioning, e.g. major.minor.patch with backward compatibility for older numeric versions. | 4083 |
v4.9.0 | Lake | Adds a lift from JobM to FetchM for backwards compatibility. | 4273 |
v4.9.0 | Lake | Fixes performance issues when lifting LogIO to CliM. | 4351 |
v4.9.0 | Lake | Makes Lake store the dependency trace in the cached build and verify it before replaying logs. | 4343 |
v4.9.0 | Lake | Moves the cached log into the trace file, ensuring out-of-date logs aren't associated with up-to-date traces. | 4402 |
v4.9.0 | Lake | Cleans up tests. | 4056 |
v4.9.0 | Lake | Fixes noRelease test when Lean repo is tagged. | 4244 |
v4.9.0 | Lake | Improves tests/serve script. | 4346 |
v4.9.0 | Lake | Adds build log path to the warning for missing or invalid build log. | 4356 |
v4.9.0 | DevOps | Adds a script (script/rebase-stage0.sh) for git rebase -i that updates each stage0 automatically. | 3984 |
v4.9.0 | DevOps | Finishes renamings from transition to Std to Batteries. | 4108 |
v4.9.0 | DevOps | Adjusts the GitHub bug template to mention testing on live.lean-lang.org. | 4109 |
v4.9.0 | DevOps | Makes CI rerun only when full-ci label is added or removed. | 4136 |
v4.9.0 | DevOps | Switches to #guard_msgs in tests wherever possible. | 4175 |
v4.9.0 | DevOps | Explains the Lean4 pygments lexer. | 3125 |
v4.9.0 | DevOps | Sets up a procedure for preparing release notes. | 4247 |
v4.9.0 | DevOps | Modernizes build instructions and workflows. | 4032 |
v4.9.0 | DevOps | Moves some expensive checks from merge queue to releases. | 4255 |
v4.9.0 | DevOps | Adds aarch64 macOS as a native compilation target in CI. | 4265 |
v4.9.0 | DevOps | Updates build instructions for macOS. | 4317 |
v4.9.0 | DevOps | Adjusts workflow to update Batteries in the manifest for lean-pr-testing-NNNN branches. | 4333 |
v4.9.0 | DevOps | Simplifies lean4checker step of the release checklist. | 4355 |
v4.9.0 | DevOps | Adds installing elan to pr-release CI step. | 4361 |
v4.9.0 | DevOps | Fixes the Windows build which was missing an exported symbol. | 4628 |
v4.9.0 | Breaking changes | Now well-founded recursive functions have @[irreducible], which can break definitional-equality-based proofs. | 4061 |
v4.9.0 | Breaking changes | Swaps Nat.zero_or and Nat.or_zero. | 4094 |
v4.9.0 | Breaking changes | Renames IsLawfulSingleton to LawfulSingleton. | 4350 |
v4.9.0 | Breaking changes | BitVec literal notation is now <num>#<term>, global, and rotateLeft/rotateRight take shift modulo bitwidth. | 4229 |
v4.9.0 | Breaking changes | No longer simp lemmas: List.length_pos and Option.bind_eq_some. | 4172 / 4314 |
v4.9.0 | Breaking changes | Due to #3929, MessageData.ofPPFormat is removed; use MessageData.lazy or .ofFormatWithInfos. | 3929 |
v4.9.0 | Breaking changes | Types in let/have can fail to elaborate due to new restrictions on embedded tactics (#4096). | 4096 |
v4.8.0 | Language features, tactics, and metaprograms (Functional induction) | Introduces a functional induction principle for recursive functions. | 3432 |
v4.8.0 | Language features, tactics, and metaprograms (Functional induction) | Expands or modifies the functional induction mechanism. | 3620 |
v4.8.0 | Language features, tactics, and metaprograms (Functional induction) | Refines generation of functional induction theorems for certain definitions. | 3754 |
v4.8.0 | Language features, tactics, and metaprograms (Functional induction) | Improves elaboration or usage of functional induction principles. | 3762 |
v4.8.0 | Language features, tactics, and metaprograms (Functional induction) | Optimizes aspects of functional induction for specific patterns. | 3738 |
v4.8.0 | Language features, tactics, and metaprograms (Functional induction) | Extends functional induction with additional features or fixes. | 3776 |
v4.8.0 | Language features, tactics, and metaprograms (Functional induction) | Updates functional induction principle edge cases. | 3898 |
v4.8.0 | Language features, tactics, and metaprograms (Termination checker) | Makes termination_by? avoid sizeOf when unnecessary. | 3630 |
v4.8.0 | Language features, tactics, and metaprograms (Termination checker) | Improves the termination_by syntax. | 3652 |
v4.8.0 | Language features, tactics, and metaprograms (Termination checker) | Changes how termination arguments are elaborated. | 3658 |
v4.8.0 | Language features, tactics, and metaprograms (Termination checker) | Refactors GuessLex to allow more complex inferred termination arguments. | 3665 |
v4.8.0 | Language features, tactics, and metaprograms (Termination checker) | Infers termination arguments like xs.size - i automatically. | 3666 |
v4.8.0 | Language features, tactics, and metaprograms (Custom eliminators) | Introduces @[induction_eliminator] for custom induction tactics. | 3629 |
v4.8.0 | Language features, tactics, and metaprograms (Custom eliminators) | Introduces @[cases_eliminator] for custom cases tactics. | 3655 |
v4.8.0 | Language features, tactics, and metaprograms (Custom eliminators) | Provides custom Nat eliminators so 'induction' uses n+1, not Nat.succ n. | 3747 |
v4.8.0 | Language features, tactics, and metaprograms (Shorter instance names) | Reduces generated anonymous instance name length using a new algorithm. | 3089 |
v4.8.0 | Language features, tactics, and metaprograms (Shorter instance names) | Refines cross-project uniqueness by adding a module-based suffix. | 3934 |
v4.8.0 | Language features, tactics, and metaprograms (simp/dsimp) | Enables kernel projection reduction in dsimp. | 3607 |
v4.8.0 | Language features, tactics, and metaprograms (simp/dsimp) | Makes dsimp normalize raw Nat literals as OfNat.ofNat. | 3624 |
v4.8.0 | Language features, tactics, and metaprograms (simp/dsimp) | Ensures simp handles OfScientific literals properly. | 3628 |
v4.8.0 | Language features, tactics, and metaprograms (simp/dsimp) | Makes dsimp? report used simprocs. | 3654 |
v4.8.0 | Language features, tactics, and metaprograms (simp/dsimp) | Improves performance when simp encounters a loop. | 3819 |
v4.8.0 | Language features, tactics, and metaprograms (simp/dsimp) | Fixes discharger/cache interaction in simp. | 3821 |
v4.8.0 | Language features, tactics, and metaprograms (simp/dsimp) | Prevents simp from breaking Char literals. | 3824 |
v4.8.0 | Language features, tactics, and metaprograms (simp/dsimp) | Allows more lenient matching for Nat instances in simp. | 3838 |
v4.8.0 | Language features, tactics, and metaprograms (simp/dsimp) | Documents simp configuration options. | 3870 |
v4.8.0 | Language features, tactics, and metaprograms (simp/dsimp) | Fixes simp caching issues. | 3972 |
v4.8.0 | Language features, tactics, and metaprograms (simp/dsimp) | Improves cache behavior for well-behaved dischargers in simp. | 4044 |
v4.8.0 | Language features, tactics, and metaprograms (omega) | Introduces a term canonicalizer for omega. | 3639 |
v4.8.0 | Language features, tactics, and metaprograms (omega) | Improves the positivity handling for Int modulo operator. | 3736 |
v4.8.0 | Language features, tactics, and metaprograms (omega) | Lets omega function as a simp discharger. | 3828 |
v4.8.0 | Language features, tactics, and metaprograms (omega) | Adds helpful error messages for omega usage. | 3847 |
v4.8.0 | Language features, tactics, and metaprograms (omega) | Refines internal usage or correctness in omega tactic. | 3766 |
v4.8.0 | Language features, tactics, and metaprograms (omega) | Further fixes or improvements for omega logic. | 3853 |
v4.8.0 | Language features, tactics, and metaprograms (omega) | Enhances fallback error handling in omega tactic. | 3875 |
v4.8.0 | Language features, tactics, and metaprograms (rfl) | Upstreams @[refl] attribute and the rfl tactic. | 3671 |
v4.8.0 | Language features, tactics, and metaprograms (rfl) | Continues upstreaming rfl features or patches. | 3708 |
v4.8.0 | Language features, tactics, and metaprograms (rfl) | Makes apply_rfl not operate on Eq itself. | 3751 |
v4.8.0 | Language features, tactics, and metaprograms (rfl) | Improves rfl error message when no goals remain. | 4067 |
v4.8.0 | Language features, tactics, and metaprograms (rw?) | Upstreams the rw? tactic for rewriting suggestions. | 3719 |
v4.8.0 | Language features, tactics, and metaprograms (rw?) | Fixes or improves the rw? tactic usage details. | 3783 |
v4.8.0 | Language features, tactics, and metaprograms (rw?) | Additional enhancements for lemma selection in rw?. | 3794 |
v4.8.0 | Language features, tactics, and metaprograms (rw?) | Further refinements or fixes for rw? rewriting approach. | 3911 |
v4.8.0 | Language features, tactics, and metaprograms (conv) | Adds a conv version of the calc tactic. | 3659 |
v4.8.0 | Language features, tactics, and metaprograms (conv) | Uses try with_reducible rfl to clean up conv states. | 3763 |
v4.8.0 | Language features, tactics, and metaprograms (#guard_msgs) | Introduces whitespace protection with the ⏎ char in #guard_msgs. | 3617 |
v4.8.0 | Language features, tactics, and metaprograms (#guard_msgs) | Adds options for whitespace normalization and message ordering in #guard_msgs. | 3883 |
v4.8.0 | Language features, tactics, and metaprograms (#guard_msgs) | Adds an unused variables ignore function for #guard_msgs checks. | 3931 |
v4.8.0 | Language features, tactics, and metaprograms (#guard_msgs) | Introduces diff output comparing expected vs. actual messages (#guard_msgs.diff). | 3912 |
v4.8.0 | Language features, tactics, and metaprograms (do notation) | Makes it an error to lift (<- ...) out of a pure if ... then ... else. | 3820 |
v4.8.0 | Language features, tactics, and metaprograms (LazyDiscrTree) | Fixes a name collision for LazyDiscrTree that caused cache poisoning. | 3610 |
v4.8.0 | Language features, tactics, and metaprograms (LazyDiscrTree) | Simplifies exact?/apply? usage in LazyDiscrTree. | 3677 |
v4.8.0 | Language features, tactics, and metaprograms (LazyDiscrTree) | Moves general exact?/apply? logic into LazyDiscrTree internals. | 3685 |
v4.8.0 | Language features, tactics, and metaprograms (LazyDiscrTree) | Improves lemma selection for rw? using LazyDiscrTree. | 3769 |
v4.8.0 | Language features, tactics, and metaprograms (LazyDiscrTree) | Improves ordering of matches in LazyDiscrTree lookups. | 3818 |
v4.8.0 | Language features, tactics, and metaprograms | Adds inductive.autoPromoteIndices option to disable index auto-promotion. | 3590 |
v4.8.0 | Language features, tactics, and metaprograms (Misc fixes) | Preserves simp cache/dischargeDepth fields in Lean.Meta.Simp.Result.mkEqSymm. | 3606 |
v4.8.0 | Language features, tactics, and metaprograms (Misc fixes) | Makes elabTermEnsuringType respect errToSorry to improve error recovery in have. | 3633 |
v4.8.0 | Language features, tactics, and metaprograms (Misc fixes) | Allows noncomputable unsafe definitions, deferring implementations. | 3647 |
v4.8.0 | Language features, tactics, and metaprograms (Misc fixes) | Adjusts namespaces of certain tactics for consistency. | 3672 |
Subsets and Splits