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|---|---|---|---|---|
8.20.0 | Kernel | Changed | The guard checker now recognizes uniform parameters of a fixpoint and treats their instances as constant over the recursive call | [
"17986",
"16040"
] |
8.20.0 | Kernel | Added | A mechanism to add user-defined rewrite rules to Coq's reduction mechanisms; see chapter :ref:`rewrite_rules` | [
"18038"
] |
8.20.0 | Kernel | Added | Support for primitive strings in terms | [
"18973"
] |
8.20.0 | Specification language, type inference | Changed | Warnings `future-coercion-class-constructor` and `future-coercion-class-field` about `:>` in :cmd:`Class` as errors by default; replace `:>` with `::` for typeclass instances | [
"18590"
] |
8.20.0 | Specification language, type inference | Changed | Mutually-proved theorems with statements in different coinductive types now supported | [
"18743"
] |
8.20.0 | Specification language, type inference | Added | :cmd:`CoFixpoint` supports attributes `bypass_guard`, `clearbody`, `deprecated`, and `warn` | [
"18754"
] |
8.20.0 | Specification language, type inference | Added | `Program Fixpoint` with `measure` or `wf` now supports `where` clauses, `local`/`clearbody` attributes, and non-atomic conclusions | [
"18834"
] |
8.20.0 | Specification language, type inference | Fixed | Anomaly on the absence of remaining obligations of some name is now an error | [
"18873",
"3889"
] |
8.20.0 | Specification language, type inference | Fixed | Universe polymorphic `Program` obligations are now only generalized over effectively occurring universe variables | [
"18915",
"11766",
"11988"
] |
8.20.0 | Specification language, type inference | Fixed | Anomaly `assertion failed` in pattern-matching compilation with :flag:`Program Mode` | [
"18921",
"5777",
"11030",
"11586"
] |
8.20.0 | Specification language, type inference | Fixed | Support for `Program`-style pattern-matching on more than one argument in an inductive family | [
"18929",
"1956",
"5777"
] |
8.20.0 | Specification language, type inference | Fixed | Anomaly with obligations in the binders of a `measure`- or `wf`-based `Program Fixpoint` | [
"18958",
"18920"
] |
8.20.0 | Specification language, type inference | Fixed | Incorrect registration of universe names attached to a primitive polymorphic constant | [
"19100",
"19099"
] |
8.20.0 | Notations | Changed | An :g:`only printing` interpretation of a notation with a specific format no longer changes printing rules of other interpretations | [
"16329",
"16262"
] |
8.20.0 | Notations | Changed | Levels of :cmd:`Reserved Notation` now default to levels of previous notations with longest common prefix | [
"19149"
] |
8.20.0 | Notations | Added | :warn:`closed-notation-not-level-0` and :warn:`postfix-notation-not-level-1` warnings for unusual levels | [
"18588"
] |
8.20.0 | Notations | Added | :warn:`notation-incompatible-prefix` warning when two notation definitions have incompatible prefixes | [
"19049"
] |
8.20.0 | Notations | Fixed | Notations for applied constants with multiple signatures of implicit arguments now correctly insert maximal implicit arguments | [
"18445"
] |
8.20.0 | Notations | Fixed | Support printing notations applied to extra arguments in custom entries, removing an anomaly | [
"18447",
"18342"
] |
8.20.0 | Tactics | Changed | :g:`Z.to_euclidean_division_equations` can now do better reasoning when noticing two equations of the form x = y*q1 + … and x = y*q2 + … | [
"17934"
] |
8.20.0 | Tactics | Changed | The opacity/transparency of primitive projections is now attached to the projections themselves, not the compatibility constants | [
"18327",
"18281"
] |
8.20.0 | Tactics | Changed | Tactic :g:`intro z` on an existential variable goal now defines ?P in a context where the variable is named z | [
"18395"
] |
8.20.0 | Tactics | Changed | Syntactic global references in `using` clauses of :tacn:`auto`-like tactics are now plain references rather than interpreted terms | [
"18909"
] |
8.20.0 | Tactics | Changed | Use Coqlib's :cmd:`Register` for generalized rewriting tactic, making (C)RelationClasses/(C)Morphisms independent of the `rewrite` tactic | [
"19115"
] |
8.20.0 | Tactics | Removed | The `clear` modifier, deprecated since 8.17 | [
"18887"
] |
8.20.0 | Tactics | Removed | The `cutrewrite` tactic, deprecated since Coq 8.5 | [
"19027"
] |
8.20.0 | Tactics | Deprecated | Non-reference hints in `using` clauses of :tacn:`auto`-like tactics | [
"19006"
] |
8.20.0 | Tactics | Deprecated | The `gintuition` tactic | [
"19129"
] |
8.20.0 | Tactics | Deprecated | :tacn:`destauto` | [
"19179"
] |
8.20.0 | Tactics | Added | :g:`Z.to_euclidean_division_equations` can now pose equations of the form x = y*q using :g:`Z.divide` | [
"17927"
] |
8.20.0 | Tactics | Added | Support for :g:`Nat.double` and :g:`Nat.div2` in :g:`zify` and :g:`lia` | [
"18729"
] |
8.20.0 | Tactics | Added | :tacn:`replace` now accepts `->` / `<-` for direction of replacement | [
"19060",
"13480"
] |
8.20.0 | Tactics | Fixed | :tacn:`simpl` systematically reuses the cofixpoint’s name if globally defined | [
"18576",
"4056"
] |
8.20.0 | Tactics | Fixed | Reduction of primitive projections of cofixpoints by :tacn:`simpl` | [
"18577",
"7982"
] |
8.20.0 | Tactics | Fixed | Refolding of reduced global mutual fixpoints/cofixpoints with parameters in :tacn:`cbn` | [
"18601",
"4056"
] |
8.20.0 | Tactics | Fixed | :tacn:`cbn` left unnamable constants when refolding mutual fixpoints/cofixpoints from aliased modules | [
"18616",
"17897"
] |
8.20.0 | Tactics | Fixed | :tacn:`cbv` of primitive projections applied to a tuple now ignores `beta` | [
"18618",
"9086"
] |
8.20.0 | Ltac language | Added | :tacn:`rewrite_strat` now supports fixpoint operator in `@rewstrategy` | [
"18094",
"13702"
] |
8.20.0 | Ltac language | Fixed | :tacn:`rewrite_strat` now works inside module functors | [
"18094",
"18463"
] |
8.20.0 | Ltac2 language | Changed | Recursive let and nonmutable projections of syntactic values are considered syntactic | [
"18411"
] |
8.20.0 | Ltac2 language | Changed | Ltac2 notations are typechecked at declaration time by default | [
"18432",
"17477"
] |
8.20.0 | Ltac2 language | Changed | Argument order for `List.fold_left2` / `List.fold_right2` changed to match OCaml | [
"18706"
] |
8.20.0 | Ltac2 language | Changed | `Import`ing a module with a mutable Ltac2 definition does not undo its mutations | [
"18713"
] |
8.20.0 | Ltac2 language | Changed | The `using` clause argument of :tacn:`auto`-like tactics in Ltac2 now takes a global `reference` | [
"18940"
] |
8.20.0 | Ltac2 language | Deprecated | `Ltac2.Constr.Pretype.Flags.open_constr_flags` | [
"18765"
] |
8.20.0 | Ltac2 language | Added | `fst` and `snd` in `Ltac2.Init` | [
"18370"
] |
8.20.0 | Ltac2 language | Added | `Ltac2.Ltac1.of_preterm` and `to_preterm` | [
"18551"
] |
8.20.0 | Ltac2 language | Added | `of_intro_pattern` and `to_intro_pattern` in `Ltac2.Ltac1` | [
"18558"
] |
8.20.0 | Ltac2 language | Added | Basic APIs in `Ltac2.Ltac1` for more informative errors on value conversion | [
"18558"
] |
8.20.0 | Ltac2 language | Added | APIs `Ltac2.Control.unshelve` and `Ltac2.Notations.unshelve` | [
"18604"
] |
8.20.0 | Ltac2 language | Added | Warning on unused Ltac2 variables | [
"18641"
] |
8.20.0 | Ltac2 language | Added | `Ltac2.Control.numgoals` | [
"18690"
] |
8.20.0 | Ltac2 language | Added | `intropattern` and `intropatterns` notation scopes support views | [
"18757"
] |
8.20.0 | Ltac2 language | Added | Open recursion combinators in `Ltac2.Constr.Unsafe` | [
"18764"
] |
8.20.0 | Ltac2 language | Added | APIs in `Ltac2.Constr.Pretype.Flags` to customize pretyping flags | [
"18765"
] |
8.20.0 | Ltac2 language | Added | :attr:`abstract` attribute for `Ltac2 Type` | [
"18766",
"18656"
] |
8.20.0 | Ltac2 language | Added | APIs in `Ltac2.Message` to interact with the boxing system of the pretty printer | [
"18988"
] |
8.20.0 | Ltac2 language | Added | Flag `Automatic Proposition Inductives`, :flag:`Dependent Proposition Eliminators`, and warning `automatic-prop-lowering` | [
"18989"
] |
8.20.0 | Ltac2 language | Added | `String.sub` | [
"19204"
] |
8.20.0 | Ltac2 language | Fixed | `Ltac2.Control.new_goal` removes the new goal from the shelf/future goals | [
"19141",
"19138"
] |
8.20.0 | SSReflect | Changed | ssreflect no longer relies on the recovery mechanism of the parsing engine | [
"18224"
] |
8.20.0 | SSReflect | Changed | Notations `_.1` and `_.2` are now defined in the prelude at level 1 rather than in `ssrfun` at level 2 | [
"18224"
] |
8.20.0 | SSReflect | Changed | The :tacn:`have` tactic generates a proof term with an opaque constant, as in Coq ≤ 8.16 | [
"18449",
"18017"
] |
8.20.0 | SSReflect | Deprecated | The `fun_scope` notation scope declared in `ssrfun.v` is deprecated; use `function_scope` instead | [
"18374"
] |
8.20.0 | SSReflect | Fixed | Handling of primitive projections in ssrewrite | [
"19213",
"19229"
] |
8.20.0 | Commands and options | Changed | Default reversibility status of most coercions is now truly “non-reversible except record :>` fields” | [
"18705"
] |
8.20.0 | Commands and options | Changed | Focus commands (e.g. `1:{`) and goal selection (e.g. `1: Check`) don’t need Classic (Ltac1) proof mode | [
"18707",
"18351"
] |
8.20.0 | Commands and options | Changed | Inductives declared with `: Type` or no annotation and auto-lowered to `Prop` are not declared template polymorphic | [
"18867"
] |
8.20.0 | Commands and options | Changed | Warning about use of `Let`, `Variable`, `Hypothesis`, and `Context` outside sections is now an error by default | [
"18880"
] |
8.20.0 | Commands and options | Changed | The "fragile-hint-constr" warning is now an error by default | [
"18895"
] |
8.20.0 | Commands and options | Changed | :cmd:`Scheme` automatically registers the resulting schemes in the :cmd:`Register Scheme` database | [
"19016",
"3132"
] |
8.20.0 | Commands and options | Changed | :cmd:`Typeclasses Transparent` / `Opaque` default locality outside sections is now `export` | [
"19069"
] |
8.20.0 | Commands and options | Deprecated | The :cmd:`Cd` command. Use the command line option `-output-directory` or :opt:`Extraction Output Directory` | [
"17403"
] |
8.20.0 | Commands and options | Added | :attr:`warn` attribute, generalizing the deprecation machinery to other forms of comments | [
"18248"
] |
8.20.0 | Commands and options | Added | :cmd:`Register Scheme` to add entries to the scheme database | [
"18299"
] |
8.20.0 | Commands and options | Added | `Print @reference` shows implicit arguments directly on the type | [
"18444"
] |
8.20.0 | Commands and options | Added | `@import_categories` supports category `options` | [
"18536"
] |
8.20.0 | Commands and options | Added | `About`/`Print` now indicate if a name is a projection | [
"18725"
] |
8.20.0 | Commands and options | Added | :cmd:`Hint Projections` sets transparency flags for projections in specified hint DBs | [
"18785"
] |
8.20.0 | Commands and options | Added | :cmd:`Search` now has `is:Fixpoint` and `is:CoFixpoint` | [
"18983"
] |
8.20.0 | Commands and options | Added | :cmd:`Include` can now include module types with `with` clauses | [
"19144"
] |
8.20.0 | Commands and options | Fixed | Missing implicit args after a `->` in `Print`/`About` | [
"18442",
"15020"
] |
8.20.0 | Commands and options | Fixed | :flag:`Cumulativity Weak Constraints` can unify universes to `Set` with :flag:`Universe Minimization ToSet` | [
"18458"
] |
8.20.0 | Commands and options | Fixed | `Search` with `is:Scheme` was searching for inductives with schemes, not the schemes themselves | [
"18537",
"18298"
] |
8.20.0 | Commands and options | Fixed | `Search` now searches in included module types | [
"18662",
"18657"
] |
8.20.0 | Commands and options | Fixed | `Eval` / `Definition := Eval` work without loading the Ltac plugin | [
"18852",
"12948"
] |
8.20.0 | Commands and options | Fixed | :cmd:`Scheme` declares non-recursive schemes for `@scheme_type` | [
"19017",
"10816"
] |
8.20.0 | Commands and options | Fixed | :flag:`Cumulativity Weak Constraints` had its meaning flipped since 8.12 | [
"19201"
] |
8.20.0 | Command-line tools | Changed | SIGINT now produces “user interrupt” instead of aborting, for better messages | [
"18716"
] |
8.20.0 | Command-line tools | Added | `-output-directory dir` sets default output dir for extraction, :cmd:`Redirect`, :cmd:`Print Universes` | [
"17392",
"8649"
] |
8.20.0 | Command-line tools | Fixed | coqdoc links to section variables introduced with `Context` | [
"18527",
"18516"
] |
8.20.0 | CoqIDE | Changed | Find/replace UI improved: margins, icons for found/not found | [
"18523",
"11024"
] |
8.20.0 | CoqIDE | Changed | Default key binding modifier for Navigation menu is now Alt (non-macOS). Undo changed to Ctrl-Z, Next/Previous tab to Ctrl-PgUp/PgDn | [
"18717"
] |
8.20.0 | CoqIDE | Changed | Changing modifiers for View menu only applies to toggle items; View/Show Proof changed to Shift-F2 | [
"18717"
] |
8.20.0 | CoqIDE | Added | Edit/Select All and Navigation/Fully Check menu items | [
"18717",
"16141"
] |
8.20.0 | CoqIDE | Fixed | Opening a file via drag and drop now works correctly | [
"18524",
"3977"
] |
8.20.0 | CoqIDE | Fixed | Incorrect highlight/line numbers for errors/warnings with Unicode; XML protocol updated | [
"19040",
"18682"
] |
8.20.0 | CoqIDE | Fixed | Show tooltips for syntax errors | [
"19153",
"19152"
] |
8.20.0 | Standard library | Changed | Renamed “push” lemmas for List.length to consistent naming: e.g. `app_length`→`length_app` | [
"18564"
] |
8.20.0 | Standard library | Changed | `Coq.CRelationClasses.arrow`, `iffT`, `flip` are now Typeclasses Opaque | [
"18910"
] |