Coq-Changelog.jsonl

{"version":"8.20.0","category":"Kernel","type":"Changed","change":"The guard checker now recognizes uniform parameters of a fixpoint and treats their instances as constant over the recursive call","change_number":["17986","16040"]}
{"version":"8.20.0","category":"Kernel","type":"Added","change":"A mechanism to add user-defined rewrite rules to Coq's reduction mechanisms; see chapter :ref:`rewrite_rules`","change_number":["18038"]}
{"version":"8.20.0","category":"Kernel","type":"Added","change":"Support for primitive strings in terms","change_number":["18973"]}
{"version":"8.20.0","category":"Specification language, type inference","type":"Changed","change":"Warnings `future-coercion-class-constructor` and `future-coercion-class-field` about `:>` in :cmd:`Class` as errors by default; replace `:>` with `::` for typeclass instances","change_number":["18590"]}
{"version":"8.20.0","category":"Specification language, type inference","type":"Changed","change":"Mutually-proved theorems with statements in different coinductive types now supported","change_number":["18743"]}
{"version":"8.20.0","category":"Specification language, type inference","type":"Added","change":":cmd:`CoFixpoint` supports attributes `bypass_guard`, `clearbody`, `deprecated`, and `warn`","change_number":["18754"]}
{"version":"8.20.0","category":"Specification language, type inference","type":"Added","change":"`Program Fixpoint` with `measure` or `wf` now supports `where` clauses, `local`/`clearbody` attributes, and non-atomic conclusions","change_number":["18834"]}
{"version":"8.20.0","category":"Specification language, type inference","type":"Fixed","change":"Anomaly on the absence of remaining obligations of some name is now an error","change_number":["18873","3889"]}
{"version":"8.20.0","category":"Specification language, type inference","type":"Fixed","change":"Universe polymorphic `Program` obligations are now only generalized over effectively occurring universe variables","change_number":["18915","11766","11988"]}
{"version":"8.20.0","category":"Specification language, type inference","type":"Fixed","change":"Anomaly `assertion failed` in pattern-matching compilation with :flag:`Program Mode`","change_number":["18921","5777","11030","11586"]}
{"version":"8.20.0","category":"Specification language, type inference","type":"Fixed","change":"Support for `Program`-style pattern-matching on more than one argument in an inductive family","change_number":["18929","1956","5777"]}
{"version":"8.20.0","category":"Specification language, type inference","type":"Fixed","change":"Anomaly with obligations in the binders of a `measure`- or `wf`-based `Program Fixpoint`","change_number":["18958","18920"]}
{"version":"8.20.0","category":"Specification language, type inference","type":"Fixed","change":"Incorrect registration of universe names attached to a primitive polymorphic constant","change_number":["19100","19099"]}
{"version":"8.20.0","category":"Notations","type":"Changed","change":"An :g:`only printing` interpretation of a notation with a specific format no longer changes printing rules of other interpretations","change_number":["16329","16262"]}
{"version":"8.20.0","category":"Notations","type":"Changed","change":"Levels of :cmd:`Reserved Notation` now default to levels of previous notations with longest common prefix","change_number":["19149"]}
{"version":"8.20.0","category":"Notations","type":"Added","change":":warn:`closed-notation-not-level-0` and :warn:`postfix-notation-not-level-1` warnings for unusual levels","change_number":["18588"]}
{"version":"8.20.0","category":"Notations","type":"Added","change":":warn:`notation-incompatible-prefix` warning when two notation definitions have incompatible prefixes","change_number":["19049"]}
{"version":"8.20.0","category":"Notations","type":"Fixed","change":"Notations for applied constants with multiple signatures of implicit arguments now correctly insert maximal implicit arguments","change_number":["18445"]}
{"version":"8.20.0","category":"Notations","type":"Fixed","change":"Support printing notations applied to extra arguments in custom entries, removing an anomaly","change_number":["18447","18342"]}
{"version":"8.20.0","category":"Tactics","type":"Changed","change":":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 + …","change_number":["17934"]}
{"version":"8.20.0","category":"Tactics","type":"Changed","change":"The opacity/transparency of primitive projections is now attached to the projections themselves, not the compatibility constants","change_number":["18327","18281"]}
{"version":"8.20.0","category":"Tactics","type":"Changed","change":"Tactic :g:`intro z` on an existential variable goal now defines ?P in a context where the variable is named z","change_number":["18395"]}
{"version":"8.20.0","category":"Tactics","type":"Changed","change":"Syntactic global references in `using` clauses of :tacn:`auto`-like tactics are now plain references rather than interpreted terms","change_number":["18909"]}
{"version":"8.20.0","category":"Tactics","type":"Changed","change":"Use Coqlib's :cmd:`Register` for generalized rewriting tactic, making (C)RelationClasses/(C)Morphisms independent of the `rewrite` tactic","change_number":["19115"]}
{"version":"8.20.0","category":"Tactics","type":"Removed","change":"The `clear` modifier, deprecated since 8.17","change_number":["18887"]}
{"version":"8.20.0","category":"Tactics","type":"Removed","change":"The `cutrewrite` tactic, deprecated since Coq 8.5","change_number":["19027"]}
{"version":"8.20.0","category":"Tactics","type":"Deprecated","change":"Non-reference hints in `using` clauses of :tacn:`auto`-like tactics","change_number":["19006"]}
{"version":"8.20.0","category":"Tactics","type":"Deprecated","change":"The `gintuition` tactic","change_number":["19129"]}
{"version":"8.20.0","category":"Tactics","type":"Deprecated","change":":tacn:`destauto`","change_number":["19179"]}
{"version":"8.20.0","category":"Tactics","type":"Added","change":":g:`Z.to_euclidean_division_equations` can now pose equations of the form x = y*q using :g:`Z.divide`","change_number":["17927"]}
{"version":"8.20.0","category":"Tactics","type":"Added","change":"Support for :g:`Nat.double` and :g:`Nat.div2` in :g:`zify` and :g:`lia`","change_number":["18729"]}
{"version":"8.20.0","category":"Tactics","type":"Added","change":":tacn:`replace` now accepts `->` / `<-` for direction of replacement","change_number":["19060","13480"]}
{"version":"8.20.0","category":"Tactics","type":"Fixed","change":":tacn:`simpl` systematically reuses the cofixpoint’s name if globally defined","change_number":["18576","4056"]}
{"version":"8.20.0","category":"Tactics","type":"Fixed","change":"Reduction of primitive projections of cofixpoints by :tacn:`simpl`","change_number":["18577","7982"]}
{"version":"8.20.0","category":"Tactics","type":"Fixed","change":"Refolding of reduced global mutual fixpoints/cofixpoints with parameters in :tacn:`cbn`","change_number":["18601","4056"]}
{"version":"8.20.0","category":"Tactics","type":"Fixed","change":":tacn:`cbn` left unnamable constants when refolding mutual fixpoints/cofixpoints from aliased modules","change_number":["18616","17897"]}
{"version":"8.20.0","category":"Tactics","type":"Fixed","change":":tacn:`cbv` of primitive projections applied to a tuple now ignores `beta`","change_number":["18618","9086"]}
{"version":"8.20.0","category":"Ltac language","type":"Added","change":":tacn:`rewrite_strat` now supports fixpoint operator in `@rewstrategy`","change_number":["18094","13702"]}
{"version":"8.20.0","category":"Ltac language","type":"Fixed","change":":tacn:`rewrite_strat` now works inside module functors","change_number":["18094","18463"]}
{"version":"8.20.0","category":"Ltac2 language","type":"Changed","change":"Recursive let and nonmutable projections of syntactic values are considered syntactic","change_number":["18411"]}
{"version":"8.20.0","category":"Ltac2 language","type":"Changed","change":"Ltac2 notations are typechecked at declaration time by default","change_number":["18432","17477"]}
{"version":"8.20.0","category":"Ltac2 language","type":"Changed","change":"Argument order for `List.fold_left2` / `List.fold_right2` changed to match OCaml","change_number":["18706"]}
{"version":"8.20.0","category":"Ltac2 language","type":"Changed","change":"`Import`ing a module with a mutable Ltac2 definition does not undo its mutations","change_number":["18713"]}
{"version":"8.20.0","category":"Ltac2 language","type":"Changed","change":"The `using` clause argument of :tacn:`auto`-like tactics in Ltac2 now takes a global `reference`","change_number":["18940"]}
{"version":"8.20.0","category":"Ltac2 language","type":"Deprecated","change":"`Ltac2.Constr.Pretype.Flags.open_constr_flags`","change_number":["18765"]}
{"version":"8.20.0","category":"Ltac2 language","type":"Added","change":"`fst` and `snd` in `Ltac2.Init`","change_number":["18370"]}
{"version":"8.20.0","category":"Ltac2 language","type":"Added","change":"`Ltac2.Ltac1.of_preterm` and `to_preterm`","change_number":["18551"]}
{"version":"8.20.0","category":"Ltac2 language","type":"Added","change":"`of_intro_pattern` and `to_intro_pattern` in `Ltac2.Ltac1`","change_number":["18558"]}
{"version":"8.20.0","category":"Ltac2 language","type":"Added","change":"Basic APIs in `Ltac2.Ltac1` for more informative errors on value conversion","change_number":["18558"]}
{"version":"8.20.0","category":"Ltac2 language","type":"Added","change":"APIs `Ltac2.Control.unshelve` and `Ltac2.Notations.unshelve`","change_number":["18604"]}
{"version":"8.20.0","category":"Ltac2 language","type":"Added","change":"Warning on unused Ltac2 variables","change_number":["18641"]}
{"version":"8.20.0","category":"Ltac2 language","type":"Added","change":"`Ltac2.Control.numgoals`","change_number":["18690"]}
{"version":"8.20.0","category":"Ltac2 language","type":"Added","change":"`intropattern` and `intropatterns` notation scopes support views","change_number":["18757"]}
{"version":"8.20.0","category":"Ltac2 language","type":"Added","change":"Open recursion combinators in `Ltac2.Constr.Unsafe`","change_number":["18764"]}
{"version":"8.20.0","category":"Ltac2 language","type":"Added","change":"APIs in `Ltac2.Constr.Pretype.Flags` to customize pretyping flags","change_number":["18765"]}
{"version":"8.20.0","category":"Ltac2 language","type":"Added","change":":attr:`abstract` attribute for `Ltac2 Type`","change_number":["18766","18656"]}
{"version":"8.20.0","category":"Ltac2 language","type":"Added","change":"APIs in `Ltac2.Message` to interact with the boxing system of the pretty printer","change_number":["18988"]}
{"version":"8.20.0","category":"Ltac2 language","type":"Added","change":"Flag `Automatic Proposition Inductives`, :flag:`Dependent Proposition Eliminators`, and warning `automatic-prop-lowering`","change_number":["18989"]}
{"version":"8.20.0","category":"Ltac2 language","type":"Added","change":"`String.sub`","change_number":["19204"]}
{"version":"8.20.0","category":"Ltac2 language","type":"Fixed","change":"`Ltac2.Control.new_goal` removes the new goal from the shelf/future goals","change_number":["19141","19138"]}
{"version":"8.20.0","category":"SSReflect","type":"Changed","change":"ssreflect no longer relies on the recovery mechanism of the parsing engine","change_number":["18224"]}
{"version":"8.20.0","category":"SSReflect","type":"Changed","change":"Notations `_.1` and `_.2` are now defined in the prelude at level 1 rather than in `ssrfun` at level 2","change_number":["18224"]}
{"version":"8.20.0","category":"SSReflect","type":"Changed","change":"The :tacn:`have` tactic generates a proof term with an opaque constant, as in Coq ≤ 8.16","change_number":["18449","18017"]}
{"version":"8.20.0","category":"SSReflect","type":"Deprecated","change":"The `fun_scope` notation scope declared in `ssrfun.v` is deprecated; use `function_scope` instead","change_number":["18374"]}
{"version":"8.20.0","category":"SSReflect","type":"Fixed","change":"Handling of primitive projections in ssrewrite","change_number":["19213","19229"]}
{"version":"8.20.0","category":"Commands and options","type":"Changed","change":"Default reversibility status of most coercions is now truly “non-reversible except record :>` fields”","change_number":["18705"]}
{"version":"8.20.0","category":"Commands and options","type":"Changed","change":"Focus commands (e.g. `1:{`) and goal selection (e.g. `1: Check`) don’t need Classic (Ltac1) proof mode","change_number":["18707","18351"]}
{"version":"8.20.0","category":"Commands and options","type":"Changed","change":"Inductives declared with `: Type` or no annotation and auto-lowered to `Prop` are not declared template polymorphic","change_number":["18867"]}
{"version":"8.20.0","category":"Commands and options","type":"Changed","change":"Warning about use of `Let`, `Variable`, `Hypothesis`, and `Context` outside sections is now an error by default","change_number":["18880"]}
{"version":"8.20.0","category":"Commands and options","type":"Changed","change":"The \"fragile-hint-constr\" warning is now an error by default","change_number":["18895"]}
{"version":"8.20.0","category":"Commands and options","type":"Changed","change":":cmd:`Scheme` automatically registers the resulting schemes in the :cmd:`Register Scheme` database","change_number":["19016","3132"]}
{"version":"8.20.0","category":"Commands and options","type":"Changed","change":":cmd:`Typeclasses Transparent` / `Opaque` default locality outside sections is now `export`","change_number":["19069"]}
{"version":"8.20.0","category":"Commands and options","type":"Deprecated","change":"The :cmd:`Cd` command.  Use the command line option `-output-directory` or :opt:`Extraction Output Directory`","change_number":["17403"]}
{"version":"8.20.0","category":"Commands and options","type":"Added","change":":attr:`warn` attribute, generalizing the deprecation machinery to other forms of comments","change_number":["18248"]}
{"version":"8.20.0","category":"Commands and options","type":"Added","change":":cmd:`Register Scheme` to add entries to the scheme database","change_number":["18299"]}
{"version":"8.20.0","category":"Commands and options","type":"Added","change":"`Print @reference` shows implicit arguments directly on the type","change_number":["18444"]}
{"version":"8.20.0","category":"Commands and options","type":"Added","change":"`@import_categories` supports category `options`","change_number":["18536"]}
{"version":"8.20.0","category":"Commands and options","type":"Added","change":"`About`/`Print` now indicate if a name is a projection","change_number":["18725"]}
{"version":"8.20.0","category":"Commands and options","type":"Added","change":":cmd:`Hint Projections` sets transparency flags for projections in specified hint DBs","change_number":["18785"]}
{"version":"8.20.0","category":"Commands and options","type":"Added","change":":cmd:`Search` now has `is:Fixpoint` and `is:CoFixpoint`","change_number":["18983"]}
{"version":"8.20.0","category":"Commands and options","type":"Added","change":":cmd:`Include` can now include module types with `with` clauses","change_number":["19144"]}
{"version":"8.20.0","category":"Commands and options","type":"Fixed","change":"Missing implicit args after a `->` in `Print`/`About`","change_number":["18442","15020"]}
{"version":"8.20.0","category":"Commands and options","type":"Fixed","change":":flag:`Cumulativity Weak Constraints` can unify universes to `Set` with :flag:`Universe Minimization ToSet`","change_number":["18458"]}
{"version":"8.20.0","category":"Commands and options","type":"Fixed","change":"`Search` with `is:Scheme` was searching for inductives with schemes, not the schemes themselves","change_number":["18537","18298"]}
{"version":"8.20.0","category":"Commands and options","type":"Fixed","change":"`Search` now searches in included module types","change_number":["18662","18657"]}
{"version":"8.20.0","category":"Commands and options","type":"Fixed","change":"`Eval` / `Definition := Eval` work without loading the Ltac plugin","change_number":["18852","12948"]}
{"version":"8.20.0","category":"Commands and options","type":"Fixed","change":":cmd:`Scheme` declares non-recursive schemes for `@scheme_type`","change_number":["19017","10816"]}
{"version":"8.20.0","category":"Commands and options","type":"Fixed","change":":flag:`Cumulativity Weak Constraints` had its meaning flipped since 8.12","change_number":["19201"]}
{"version":"8.20.0","category":"Command-line tools","type":"Changed","change":"SIGINT now produces “user interrupt” instead of aborting, for better messages","change_number":["18716"]}
{"version":"8.20.0","category":"Command-line tools","type":"Added","change":"`-output-directory dir` sets default output dir for extraction, :cmd:`Redirect`, :cmd:`Print Universes`","change_number":["17392","8649"]}
{"version":"8.20.0","category":"Command-line tools","type":"Fixed","change":"coqdoc links to section variables introduced with `Context`","change_number":["18527","18516"]}
{"version":"8.20.0","category":"CoqIDE","type":"Changed","change":"Find/replace UI improved: margins, icons for found/not found","change_number":["18523","11024"]}
{"version":"8.20.0","category":"CoqIDE","type":"Changed","change":"Default key binding modifier for Navigation menu is now Alt (non-macOS). Undo changed to Ctrl-Z, Next/Previous tab to Ctrl-PgUp/PgDn","change_number":["18717"]}
{"version":"8.20.0","category":"CoqIDE","type":"Changed","change":"Changing modifiers for View menu only applies to toggle items; View/Show Proof changed to Shift-F2","change_number":["18717"]}
{"version":"8.20.0","category":"CoqIDE","type":"Added","change":"Edit/Select All and Navigation/Fully Check menu items","change_number":["18717","16141"]}
{"version":"8.20.0","category":"CoqIDE","type":"Fixed","change":"Opening a file via drag and drop now works correctly","change_number":["18524","3977"]}
{"version":"8.20.0","category":"CoqIDE","type":"Fixed","change":"Incorrect highlight/line numbers for errors/warnings with Unicode; XML protocol updated","change_number":["19040","18682"]}
{"version":"8.20.0","category":"CoqIDE","type":"Fixed","change":"Show tooltips for syntax errors","change_number":["19153","19152"]}
{"version":"8.20.0","category":"Standard library","type":"Changed","change":"Renamed “push” lemmas for List.length to consistent naming: e.g. `app_length`→`length_app`","change_number":["18564"]}
{"version":"8.20.0","category":"Standard library","type":"Changed","change":"`Coq.CRelationClasses.arrow`, `iffT`, `flip` are now Typeclasses Opaque","change_number":["18910"]}
{"version":"8.20.0","category":"Standard library","type":"Removed","change":"`Coq.NArith.Ndigits`, `Coq.NArith.Ndist`, `Coq.Strings.ByteVector` (deprecated since 8.19)","change_number":["18936"]}
{"version":"8.20.0","category":"Standard library","type":"Deprecated","change":"`Coq.Numbers.Integer.Binary.ZBinary`, `Coq.Numbers.Integer.NatPairs.ZNatPairs`, `Coq.Numbers.Natural.Binary.NBinary`","change_number":["18500"]}
{"version":"8.20.0","category":"Standard library","type":"Deprecated","change":"`Coq.Numbers.NatInt.NZProperties`; use `NZMulOrder` instead","change_number":["18501"]}
{"version":"8.20.0","category":"Standard library","type":"Deprecated","change":"`Coq.Arith.Bool_nat`","change_number":["18538"]}
{"version":"8.20.0","category":"Standard library","type":"Deprecated","change":"`Coq.Numbers.NatInt.NZDomain`","change_number":["18539"]}
{"version":"8.20.0","category":"Standard library","type":"Deprecated","change":"`Coq.Numbers.Integers.Abstract.ZDivEucl`, `Coq.ZArith.Zeuclid`","change_number":["18544"]}
{"version":"8.20.0","category":"Standard library","type":"Deprecated","change":"`Coq.Numbers.Natural.Abstract.NIso`, `Coq.Numbers.Natural.Abstract.NDefOps`","change_number":["18668"]}
{"version":"8.20.0","category":"Standard library","type":"Deprecated","change":"`Bool.Bvector` (prefer `list bool`)","change_number":["18947"]}
{"version":"8.20.0","category":"Standard library","type":"Added","change":"A warning on `Vector.t` to caution new users about complexity vs bundling lists","change_number":["18032"]}
{"version":"8.20.0","category":"Standard library","type":"Added","change":"Lemmas `NoDup_app`, `NoDup_iff_ForallOrdPairs`, `NoDup_map_NoDup_ForallPairs`, `NoDup_concat`","change_number":["18172"]}
{"version":"8.20.0","category":"Standard library","type":"Added","change":"Lemmas around nth_error in `List`: `In_iff_nth_error`, `nth_error_app`, `nth_error_cons_0`, …","change_number":["18563"]}
{"version":"8.20.0","category":"Standard library","type":"Added","change":"Various `N`/`Nat` lemmas: `strong_induction_le`, `binary_induction`, `even_even`, `odd_even`, …","change_number":["18628"]}
{"version":"8.20.0","category":"Standard library","type":"Fixed","change":"`Z.euclidean_division_equations_cleanup` reordering for improved performance","change_number":["18818","18770"]}
{"version":"8.20.0","category":"Infrastructure and dependencies","type":"Changed","change":"Minimal Dune version to build Coq is now 3.6.1","change_number":["18359"]}
{"version":"8.20.0","category":"Infrastructure and dependencies","type":"Removed","change":"Support for `.vio` files and `.vio2vo` transformation removed; `.vos` is the recommended method","change_number":["18424"]}
{"version":"8.20.0","category":"Infrastructure and dependencies","type":"Added","change":"`coq-doc` opam/Dune package for building and installing Coq’s documentation","change_number":["17808"]}
{"version":"8.20.0","category":"Infrastructure and dependencies","type":"Added","change":"Coq is now compatible with `memprof-limits` interruption","change_number":["18906","17760"]}
{"version":"8.20.0","category":"Infrastructure and dependencies","type":"Added","change":"Ability to exit `Drop.` in Coq toplevel with `Ctrl+D`, plus `#go` directive","change_number":["18771"]}
{"version":"8.20.0","category":"Extraction","type":"Added","change":"Extension for OCaml extraction: foreign function calls to C and ML function exposition","change_number":["18270","18212"]}
{"version":"8.20.0","category":"Extraction","type":"Fixed","change":"Self-referencing extraction of primitive projections in functors","change_number":["17321","16288"]}
{"version":"8.19.0","category":"Kernel","type":"Added","change":":ref:`sort-polymorphism` to share constructs over `Type`, `Prop`, `SProp`","change_number":["17836","18331"]}
{"version":"8.19.0","category":"Kernel","type":"Fixed","change":"Primitives incorrectly convertible to anything by module subtyping","change_number":["18507","18503"]}
{"version":"8.19.0","category":"Specification language, type inference","type":"Changed","change":":token:`term_forall_or_fun`, :token:`term_let`, :token:`term_fix`, etc. from level 200 → level 10, removing parser recovery hacks","change_number":["18014"]}
{"version":"8.19.0","category":"Specification language, type inference","type":"Changed","change":":g:`(id := body)` in :cmd:`Context` outside a section in a :cmd:`Module Type` no longer tries to declare a class instance","change_number":["18254"]}
{"version":"8.19.0","category":"Specification language, type inference","type":"Fixed","change":"Anomaly with duplicate variables within a disjunctive pattern","change_number":["17857","18005","17854","18004"]}
{"version":"8.19.0","category":"Specification language, type inference","type":"Fixed","change":"Printing of constructors and `in` clause of `match` respects :flag:`Printing Implicit` and :flag:`Printing All`","change_number":["18176","18163"]}
{"version":"8.19.0","category":"Specification language, type inference","type":"Fixed","change":"Wrong shift of argument names with :cmd:`Arguments` in nested sections","change_number":["18393","12755","18392"]}
{"version":"8.19.0","category":"Notations","type":"Changed","change":"More informative message when a notation cannot be interpreted as a reference","change_number":["18104"]}
{"version":"8.19.0","category":"Notations","type":"Changed","change":"In casts `term : t`, if `t` is bound to scope `t_scope`, `term` is also interpreted in `t_scope`","change_number":["6134","14959"]}
{"version":"8.19.0","category":"Notations","type":"Added","change":"Notation `term%_scope` to set a scope only temporarily","change_number":["14928","11486","12157","14305"]}
{"version":"8.19.0","category":"Notations","type":"Removed","change":"The ability to declare scopes whose name starts with `_`","change_number":["14928"]}
{"version":"8.19.0","category":"Notations","type":"Deprecated","change":"The `term%scope` syntax in :cmd:`Arguments`","change_number":["14928"]}
{"version":"8.19.0","category":"Notations","type":"Added","change":"Quoted strings can be used as tokens in notations; double quotes can be used in symbols","change_number":["17123"]}
{"version":"8.19.0","category":"Notations","type":"Added","change":"Parsing support for recursive binders in `let` or `match`","change_number":["17856","17845"]}
{"version":"8.19.0","category":"Notations","type":"Added","change":"Declaring the same level of a notation variable more than once is now an error","change_number":["17988","17985"]}
{"version":"8.19.0","category":"Notations","type":"Fixed","change":"Various custom binder fixes in nonrecursive/recursive notations","change_number":["17115","17094"]}
{"version":"8.19.0","category":"Notations","type":"Fixed","change":"Invalid eta-expansion in notation pretty-printer","change_number":["17841","15221"]}
{"version":"8.19.0","category":"Notations","type":"Fixed","change":":flag:`Printing Parentheses` works on a right-open notation with explicit level","change_number":["17844","15322"]}
{"version":"8.19.0","category":"Notations","type":"Fixed","change":"Anomaly with nested repeated binder variables","change_number":["17861","17860"]}
{"version":"8.19.0","category":"Notations","type":"Fixed","change":"Anomaly on disabling a non-existent custom notation","change_number":["17891","17782"]}
{"version":"8.19.0","category":"Notations","type":"Fixed","change":"Proper error instead of anomaly with pattern-matching over a constructor with too many arguments","change_number":["17892","17071"]}
{"version":"8.19.0","category":"Notations","type":"Fixed","change":"Support constructors with parameters in number/string notations for patterns","change_number":["17902","11237"]}
{"version":"8.19.0","category":"Notations","type":"Fixed","change":"Chains of entry coercions sometimes printed in the wrong order","change_number":["18230","18223"]}
{"version":"8.19.0","category":"Tactics","type":"Changed","change":"`open_constr` in Ltac1/Ltac2 does not perform evar normalization","change_number":["17704"]}
{"version":"8.19.0","category":"Tactics","type":"Changed","change":":tacn:`abstract` now supports existential variables","change_number":["17745"]}
{"version":"8.19.0","category":"Tactics","type":"Changed","change":"Instances declared with :flag:`Typeclasses Unique Instances` do not allow backtracking even with evars in the goal","change_number":["17789","6714"]}
{"version":"8.19.0","category":"Tactics","type":"Changed","change":"In :tacn:`rewrite_strat`, the syntax for `choice` strategy changed slightly","change_number":["17832"]}
{"version":"8.19.0","category":"Tactics","type":"Changed","change":":tacn:`replace` with `by tac` no longer tries to solve the equality subgoal with existing hypotheses","change_number":["17964","17959"]}
{"version":"8.19.0","category":"Tactics","type":"Changed","change":"`Z.euclidean_division_equations_cleanup` now breaks up `0 <= _ < _` hypotheses","change_number":["17984"]}
{"version":"8.19.0","category":"Tactics","type":"Changed","change":":tacn:`simpl` now refolds a partial application of a fixpoint even when partially applied","change_number":["17991"]}
{"version":"8.19.0","category":"Tactics","type":"Added","change":"Ltac2 tactic `Std.resolve_tc` to resolve typeclass evars","change_number":["13071"]}
{"version":"8.19.0","category":"Tactics","type":"Added","change":"`lazy`, `simpl`, `cbn`, `cbv`, and `eval` can do head reduction with `head`","change_number":["17503","18190"]}
{"version":"8.19.0","category":"Tactics","type":"Fixed","change":"Opaque primitive projections are handled properly by “Evarconv”","change_number":["17788","17774"]}
{"version":"8.19.0","category":"Tactics","type":"Fixed","change":"Duplications with `Hint Cut` and `Hint Mode`","change_number":["17887","17417"]}
{"version":"8.19.0","category":"Tactics","type":"Fixed","change":"`zify` / `Z.euclidean_division_equations_cleanup` no longer instantiates dependent hypotheses in an order-sensitive manner","change_number":["17935","17936"]}
{"version":"8.19.0","category":"Tactics","type":"Fixed","change":":tacn:`simpl` now works on reducible named mutual fixpoints with parameters","change_number":["17993","12521","3488"]}
{"version":"8.19.0","category":"Tactics","type":"Fixed","change":":tacn:`congruence` / :tacn:`f_equal` handle polymorphic universe variables","change_number":["18106","5481","9979"]}
{"version":"8.19.0","category":"Tactics","type":"Fixed","change":"Only run zify saturation on existing goal hypotheses","change_number":["18152","18151"]}
{"version":"8.19.0","category":"Tactics","type":"Fixed","change":"A stack overflow in `lia`","change_number":["18159","18158"]}
{"version":"8.19.0","category":"Tactics","type":"Fixed","change":"`cbv` reify substitution for Case stack node","change_number":["18195","18194"]}
{"version":"8.19.0","category":"Tactics","type":"Fixed","change":"Anomaly in :tacn:`simpl` on partially applied named mutual fixpoints","change_number":["18243","18239"]}
{"version":"8.19.0","category":"Tactics","type":"Changed","change":":tacn:`simpl` tries to reduce named mutual fixpoints even when returning a function","change_number":["18243"]}
{"version":"8.19.0","category":"Ltac language","type":"Fixed","change":"“r <num>” and “r <string>” commands in coqtop Ltac debugger","change_number":["18068","18067"]}
{"version":"8.19.0","category":"Ltac2 language","type":"Changed","change":"`Array.empty`, `Message.Format.stop`, `Pattern.empty_context` are no longer thunked","change_number":["17534"]}
{"version":"8.19.0","category":"Ltac2 language","type":"Changed","change":"Ltac2 `exact` / `eexact` elaborate with expected type","change_number":["18157","12827"]}
{"version":"8.19.0","category":"Ltac2 language","type":"Changed","change":"Argument order for `List.fold_left` / `List.fold_right` / `Array.fold_right` changed to match OCaml","change_number":["18197","16485"]}
{"version":"8.19.0","category":"Ltac2 language","type":"Changed","change":"`Ltac2.Std.red_flags` has a field `rStrength` for head-only reduction","change_number":["18273","18209"]}
{"version":"8.19.0","category":"Ltac2 language","type":"Added","change":"Ltac2 supports pattern quotations when building `pattern` values (dynamic patterns)","change_number":["17667"]}
{"version":"8.19.0","category":"Ltac2 language","type":"Added","change":"New modules `Ltac2.Unification`, `Ltac2.TransparentState`","change_number":["17777"]}
{"version":"8.19.0","category":"Ltac2 language","type":"Added","change":"`Ltac2.Constr.is_float`, `is_uint63`, `is_array`","change_number":["17894"]}
{"version":"8.19.0","category":"Ltac2 language","type":"Added","change":"New stdlib modules `Ltac2.Ref`, `Ltac2.Lazy`, `Ltac2.RedFlags` + expansions","change_number":["18095","10112"]}
{"version":"8.19.0","category":"Ltac2 language","type":"Added","change":"Support for `setoid_rewrite` tactic","change_number":["18102"]}
{"version":"8.19.0","category":"Ltac2 language","type":"Added","change":":cmd:`Ltac2 Globalize` and :cmd:`Ltac2 Check`","change_number":["18139"]}
{"version":"8.19.0","category":"Ltac2 language","type":"Added","change":"A new flag :flag:`Ltac2 In Ltac1 Profiling`","change_number":["18293"]}
{"version":"8.19.0","category":"Ltac2 language","type":"Added","change":"`Ltac2.Message.Format.ikfprintf` for conditional printing","change_number":["18311","18292"]}
{"version":"8.19.0","category":"Ltac2 language","type":"Fixed","change":"Ltac2 mutable references are not considered values anymore","change_number":["18082"]}
{"version":"8.19.0","category":"Commands and options","type":"Changed","change":"`Let` with `Qed` now produces an opaque side definition; use `Defined` + `clearbody` to replicate old behavior","change_number":["17576"]}
{"version":"8.19.0","category":"Commands and options","type":"Changed","change":"Automatic lowering of record types to `Prop` matches the behavior for inductives","change_number":["17795","17801","17796","17805"]}
{"version":"8.19.0","category":"Commands and options","type":"Added","change":":opt:`Extraction Output Directory` option","change_number":["16126","9148"]}
{"version":"8.19.0","category":"Commands and options","type":"Added","change":"`-profile` cmd-line argument and `PROFILE` var in `coq_makefile` for a new :ref:`profiling` system","change_number":["17702"]}
{"version":"8.19.0","category":"Commands and options","type":"Added","change":":cmd:`Instructions` command to count CPU instructions on Linux","change_number":["17744"]}
{"version":"8.19.0","category":"Commands and options","type":"Added","change":"Support for instruction counts with `-profile`","change_number":["17744"]}
{"version":"8.19.0","category":"Commands and options","type":"Added","change":"New command :cmd:`Attributes` to assign attributes like :attr:`deprecated` to a library file","change_number":["18193","8032"]}
{"version":"8.19.0","category":"Commands and options","type":"Fixed","change":"Anomaly with :cmd:`Search` in the context of a goal","change_number":["17987","17963"]}
{"version":"8.19.0","category":"Commands and options","type":"Fixed","change":"Printer for :cmd:`Guarded` with existential variables","change_number":["18008","18006"]}
{"version":"8.19.0","category":"Command-line tools","type":"Changed","change":"`coqdep -w` can adjust warnings like `coqc -w`","change_number":["17946","10156"]}
{"version":"8.19.0","category":"Command-line tools","type":"Fixed","change":"Delayed variable expansion with `coq_makefile` for combined `.vo` and `.glob` targets on GNU Make >=4.4","change_number":["18077","18076"]}
{"version":"8.19.0","category":"Command-line tools","type":"Fixed","change":"Spurious `coqdep` warnings from missing path normalization","change_number":["18165"]}
{"version":"8.19.0","category":"Command-line tools","type":"Fixed","change":"Regression in `coqdoc --external`","change_number":["18448","18434"]}
{"version":"8.19.0","category":"Standard library","type":"Changed","change":"Reimplemented `Ncring_tac` reification in Ltac for :tacn:`nsatz`, `cring`","change_number":["18325"]}
{"version":"8.19.0","category":"Standard library","type":"Removed","change":":g:`Numbers.Cyclic.ZModulo`","change_number":["17258"]}
{"version":"8.19.0","category":"Standard library","type":"Removed","change":":g:`ZArith.Zdigits` in favor of :g:`Z.testbit`","change_number":["18025"]}
{"version":"8.19.0","category":"Standard library","type":"Removed","change":"Several long-deprecated files in `Arith` (Div2, Even, Gt, etc.)","change_number":["18164"]}
{"version":"8.19.0","category":"Standard library","type":"Deprecated","change":":g:`NArith.Ndigits` and :g:`NArith.Ndist`","change_number":["17732"]}
{"version":"8.19.0","category":"Standard library","type":"Deprecated","change":":g:`Strings.ByteVector`","change_number":["18022"]}
{"version":"8.19.0","category":"Standard library","type":"Deprecated","change":":g:`Numbers.NaryFunctions`","change_number":["18026"]}
{"version":"8.19.0","category":"Standard library","type":"Added","change":"Lemmas about `Maps` in `FMapInterface`, e.g. `cardinal_Add_In`","change_number":["12096"]}
{"version":"8.19.0","category":"Standard library","type":"Added","change":":g:`app_eq_cons`, :g:`app_inj_pivot`, :g:`rev_inj`","change_number":["17787"]}
{"version":"8.19.0","category":"Standard library","type":"Added","change":"`unfold_nth_error`, `nth_error_nil`, `nth_error_cons`, etc.","change_number":["17998"]}
{"version":"8.19.0","category":"Standard library","type":"Added","change":"`Rle`, `Rge`, `Rlt`, `Rgt` as reflexive/symmetric/transitive/antisymmetric instances","change_number":["18059"]}
{"version":"8.19.0","category":"Extraction","type":"Fixed","change":"In the error message about extracting sort-polymorphic singletons, do not specifically refer to OCaml","change_number":["17889","17817"]}
{"version":"8.19.1","category":"Kernel","type":"Fixed","change":"Incorrect abstraction of sort variables for opaque constants, leading to inconsistency","change_number":["18596","18630","18594"]}
{"version":"8.19.1","category":"Kernel","type":"Fixed","change":"Memory corruption with :tacn:`vm_compute` (rare but more likely with OCaml 5.1)","change_number":["18599"]}
{"version":"8.19.1","category":"Notations","type":"Changed","change":":warn:`Found no matching notation to enable or disable` is now a warning not an error","change_number":["18670"]}
{"version":"8.19.1","category":"Tactics","type":"Fixed","change":"Undeclared universe with multiple uses of :tacn:`abstract`","change_number":["18640","18636"]}
{"version":"8.19.1","category":"Ltac2 language","type":"Fixed","change":"Incorrect printing of constructors with multiple arguments; over-parenthesizing","change_number":["18560","18556"]}
{"version":"8.19.1","category":"Ltac2 language","type":"Fixed","change":"Declared type for `Ltac2.FMap.fold`","change_number":["18649","18635"]}
{"version":"8.19.1","category":"Infrastructure and dependencies","type":"Fixed","change":"Missing `conf-` dependencies for `coq-core` and `coq` opam packages","change_number":["18565"]}
{"version":"8.19.1","category":"Infrastructure and dependencies","type":"Fixed","change":"Avoid symlinks in git that caused build failures on some Windows","change_number":["18550","18548"]}
{"version":"8.19.2","category":"Specification language, type inference","type":"Fixed","change":"Regression from 8.18 for a defined field in a primitive `Record`","change_number":["19088","19082"]}
{"version":"8.19.2","category":"Notations","type":"Fixed","change":"Printer sometimes failing to use a prefix/infix custom notation from a different custom entry","change_number":["18089","18914"]}
{"version":"8.19.2","category":"Tactics","type":"Fixed","change":":tacn:`abstract` failing if there are admitted goals around","change_number":["18945","18942"]}
{"version":"8.19.2","category":"Ltac2 language","type":"Fixed","change":"Anomalies with VsCoq due to incorrect state handling","change_number":["19096"]}
{"version":"8.19.2","category":"Commands and options","type":"Fixed","change":"Anomaly using :cmd:`Include` on a module with a `Primitive Projections` record","change_number":["18772","18769"]}
{"version":"8.19.2","category":"Commands and options","type":"Fixed","change":"Anomaly from :cmd:`Fixpoint` with no arguments","change_number":["18741"]}
{"version":"8.19.2","category":"CoqIDE","type":"Fixed","change":"Position error/warning tooltips with multibyte UTF-8","change_number":["19137","19136"]}
{"version":"8.19.2","category":"Infrastructure and dependencies","type":"Fixed","change":"Compatibility with OCaml versions where `effect` is a keyword","change_number":["18863"]}
{"version":"8.19.2","category":"Infrastructure and dependencies","type":"Added","change":"Coq is now compatible with `memprof-limits`","change_number":["18906"]}
{"version":"8.18.0","category":"Kernel","type":"Changed","change":"The `bad-relevance` warning is now an error by default","change_number":["17172"]}
{"version":"8.18.0","category":"Kernel","type":"Fixed","change":"The kernel now checks that private inductive types can’t be eliminated outside their module","change_number":["17452","9608"]}
{"version":"8.18.0","category":"Kernel","type":"Fixed","change":"A bug in :tacn:`native_compute` for arbitrary float values","change_number":["17872","17871"]}
{"version":"8.18.0","category":"Specification language, type inference","type":"Changed","change":"Universe unification can now delay a sort’s definition to allow less `Prop`/`SProp` annotation","change_number":["16903"]}
{"version":"8.18.0","category":"Specification language, type inference","type":"Changed","change":"Pattern-matching over a primitive record avoids overhead for matches that are just a projection","change_number":["17008"]}
{"version":"8.18.0","category":"Specification language, type inference","type":"Added","change":"Volatile casts `@term :> @type` to display hidden subterms in matches","change_number":["16992","16918"]}
{"version":"8.18.0","category":"Specification language, type inference","type":"Added","change":"Printing uninterpreted terms (e.g. `Print Ltac`) now preserves custom term extensions","change_number":["17221"]}
{"version":"8.18.0","category":"Specification language, type inference","type":"Added","change":"Locality attributes for the single “field” of definitional typeclasses","change_number":["17754","17451"]}
{"version":"8.18.0","category":"Specification language, type inference","type":"Added","change":"A hook in the coercion mechanism for external metalanguages","change_number":["17794"]}
{"version":"8.18.0","category":"Specification language, type inference","type":"Fixed","change":"Canonical instance matching match-terms","change_number":["17206","17079"]}
{"version":"8.18.0","category":"Specification language, type inference","type":"Fixed","change":"Universe constraint inference in module subtyping can trigger constant unfoldings","change_number":["17305","17303"]}
{"version":"8.18.0","category":"Notations","type":"Removed","change":"The `'[='` keyword. Replace with `'[' and '='","change_number":["16788","16785"]}
{"version":"8.18.0","category":"Notations","type":"Added","change":"Support :flag:`Printing Parentheses` in custom notations","change_number":["17117"]}
{"version":"8.18.0","category":"Notations","type":"Added","change":"Improved printing of reverse coercions with `reverse_coercion`","change_number":["17484"]}
{"version":"8.18.0","category":"Notations","type":"Fixed","change":"Recursive pattern as a sequence in binder position no longer anomalies","change_number":["16937","12467"]}
{"version":"8.18.0","category":"Notations","type":"Fixed","change":"Improved printing of notations with anonymous binders","change_number":["17050"]}
{"version":"8.18.0","category":"Notations","type":"Fixed","change":"Anomaly with notations abbreviating a local var or record field","change_number":["17217","14975"]}
{"version":"8.18.0","category":"Notations","type":"Fixed","change":"Ensure “only parsing” actually declares a parsing rule","change_number":["17318","17316"]}
{"version":"8.18.0","category":"Notations","type":"Fixed","change":"In `Number Notation`, “abstract after N” is applied if number > N, not ≥","change_number":["17478"]}
{"version":"8.18.0","category":"Tactics","type":"Changed","change":":tacn:`specialize` with a `with` clause that depends on a variable in the type fails instead of silently shelving","change_number":["17322"]}
{"version":"8.18.0","category":"Tactics","type":"Changed","change":"Term-level extensions like `ltac:()` are errors in term patterns","change_number":["17352"]}
{"version":"8.18.0","category":"Tactics","type":"Changed","change":":tacn:`case` always produces as many goals as constructors now","change_number":["17541"]}
{"version":"8.18.0","category":"Tactics","type":"Changed","change":":tacn:`injection` continues with sigma types if no equality scheme found","change_number":["17670"]}
{"version":"8.18.0","category":"Tactics","type":"Changed","change":"The unification heuristics for :tacn:`case` changed; prefer :tacn:`destruct`","change_number":["17564"]}
{"version":"8.18.0","category":"Tactics","type":"Removed","change":"No-argument form of :tacn:`instantiate`, deprecated since 8.16","change_number":["16910"]}
{"version":"8.18.0","category":"Tactics","type":"Removed","change":"Undocumented `hresolve_core` and `hget_evar`","change_number":["17035"]}
{"version":"8.18.0","category":"Tactics","type":"Deprecated","change":"`elimtype` and `casetype` tactics","change_number":["16904"]}
{"version":"8.18.0","category":"Tactics","type":"Deprecated","change":"`revert dependent`, an alias for :tacn:`generalize dependent`","change_number":["17669"]}
{"version":"8.18.0","category":"Tactics","type":"Fixed","change":":tacn:`simpl` respects `simpl never` even under additional definitions","change_number":["13448","13428"]}
{"version":"8.18.0","category":"Tactics","type":"Fixed","change":"Unification less sensitive to subterm indirections","change_number":["16960"]}
{"version":"8.18.0","category":"Tactics","type":"Fixed","change":":tacn:`setoid_rewrite` no longer produces untypable states","change_number":["17304","17295"]}
{"version":"8.18.0","category":"Tactics","type":"Fixed","change":"Intropatterns destructing a product can’t silently create shelved evars","change_number":["17564"]}
{"version":"8.18.0","category":"Tactics","type":"Fixed","change":":tacn:`field_simplify` no longer introduces side-conditions when working on a hypothesis","change_number":["17591"]}
{"version":"8.18.0","category":"Tactics","type":"Fixed","change":":tacn:`tauto` variants match types up to universe unification","change_number":["8905","4721","5351"]}
{"version":"8.18.0","category":"Ltac2 language","type":"Added","change":"[| ... |] array literals","change_number":["16859","13976"]}
{"version":"8.18.0","category":"Ltac2 language","type":"Added","change":"Finite sets/maps for identifier, string, int, constant, inductive, constructor keys","change_number":["17347","16409"]}
{"version":"8.18.0","category":"Ltac2 language","type":"Added","change":"Ltac2 preterm antiquotation `$preterm:`","change_number":["17359","13977"]}
{"version":"8.18.0","category":"Ltac2 language","type":"Added","change":":flag:`Ltac Profiling` also covers Ltac2, plus new `start_profiling`, `stop_profiling`, `show_profile`","change_number":["17371","10111"]}
{"version":"8.18.0","category":"Ltac2 language","type":"Added","change":"Build/compare values in `Ltac2.Init.cast`","change_number":["17468"]}
{"version":"8.18.0","category":"Ltac2 language","type":"Added","change":"0-argument externals","change_number":["17475"]}
{"version":"8.18.0","category":"Ltac2 language","type":"Added","change":"`ltac2val:(ltac2 tactic)` quotations in Ltac1 produce Ltac1 values","change_number":["17575"]}
{"version":"8.18.0","category":"Ltac2 language","type":"Fixed","change":"Nested notations with term-antiquotations","change_number":["17232","15864"]}
{"version":"8.18.0","category":"Ltac2 language","type":"Fixed","change":"Parsing level of `by` clause in `assert`","change_number":["17508","17491"]}
{"version":"8.18.0","category":"Ltac2 language","type":"Fixed","change":"`multi_match!` etc. now preserve exceptions from backtracking after a branch has succeeded","change_number":["17597","17594"]}
{"version":"8.18.0","category":"Commands and options","type":"Changed","change":"Tactic-options commands now support :attr:`export`","change_number":["15274","15072"]}
{"version":"8.18.0","category":"Commands and options","type":"Changed","change":"`Hint` and :cmd:`Instance` with no locality attribute is now an error","change_number":["16004","13394"]}
{"version":"8.18.0","category":"Commands and options","type":"Changed","change":"Transparent obligations from Program do not produce an implicit :cmd:`Hint Unfold`","change_number":["16340"]}
{"version":"8.18.0","category":"Commands and options","type":"Changed","change":":cmd:`Print Typeclasses` replaces `Print TypeClasses`","change_number":["16690","16686"]}
{"version":"8.18.0","category":"Commands and options","type":"Changed","change":"`-async-proofs-tac-j=0` means no new processes for `par`","change_number":["16837"]}
{"version":"8.18.0","category":"Commands and options","type":"Removed","change":"The “Program Naming” flag","change_number":["16519"]}
{"version":"8.18.0","category":"Commands and options","type":"Removed","change":"Undocumented/broken `Solve Obligation`","change_number":["16842"]}
{"version":"8.18.0","category":"Commands and options","type":"Deprecated","change":"`:>` in typeclass fields is replaced by `::`","change_number":["16230","16224"]}
{"version":"8.18.0","category":"Commands and options","type":"Added","change":"Improved description of :cmd:`Proof using`","change_number":["16168"]}
{"version":"8.18.0","category":"Commands and options","type":"Added","change":"`::` syntax for fields in records as typeclass instances","change_number":["16230"]}
{"version":"8.18.0","category":"Commands and options","type":"Added","change":":cmd:`Print Keywords`","change_number":["16438","16375"]}
{"version":"8.18.0","category":"Commands and options","type":"Added","change":":cmd:`Print Grammar` for arbitrary nonterminals","change_number":["16440"]}
{"version":"8.18.0","category":"Commands and options","type":"Fixed","change":":flag:`Fast Name Printing` no longer captures variable names","change_number":["16395","14141"]}
{"version":"8.18.0","category":"Commands and options","type":"Fixed","change":":tacn:`vm_compute` respects the `bytecode-compiler`","change_number":["16931","16929"]}
{"version":"8.18.0","category":"Commands and options","type":"Fixed","change":":cmd:`Proof Mode` errors if nonexistent","change_number":["16981","16602"]}
{"version":"8.18.0","category":"Commands and options","type":"Fixed","change":"Backtracking over grammar modifications","change_number":["17069","12575"]}
{"version":"8.18.0","category":"Commands and options","type":"Fixed","change":"Anomaly in :cmd:`Function` with an applied `fix`","change_number":["17113","17110"]}
{"version":"8.18.0","category":"Command-line tools","type":"Changed","change":"`coq_makefile` no longer passes `-rectypes` to OCaml by default","change_number":["17038"]}
{"version":"8.18.0","category":"Command-line tools","type":"Changed","change":"`coqdoc` no longer indexes variable binders by default","change_number":["17045"]}
{"version":"8.18.0","category":"Command-line tools","type":"Added","change":"`coqdoc` can link all references (type + elimination + …) to the same definition","change_number":["17118"]}
{"version":"8.18.0","category":"Command-line tools","type":"Added","change":"Command line `-require lib` and `-require-from root lib`","change_number":["17364"]}
{"version":"8.18.0","category":"Command-line tools","type":"Added","change":"`coqtimelog2html` to render timing files produced with `-time`","change_number":["17411"]}
{"version":"8.18.0","category":"Command-line tools","type":"Fixed","change":"`coq_makefile` large “install” commands replaced by smaller ones","change_number":["17697","17721"]}
{"version":"8.18.0","category":"CoqIDE","type":"Changed","change":"XML protocol now sends line+column for locations","change_number":["17382","17023"]}
{"version":"8.18.0","category":"Standard library","type":"Changed","change":":g:`Vector.nth` re-implemented to compute strict subterms","change_number":["16731","16738"]}
{"version":"8.18.0","category":"Standard library","type":"Changed","change":":g:`set_diff_nodup` no longer requires :g:`NoDup l'`","change_number":["16926"]}
{"version":"8.18.0","category":"Standard library","type":"Changed","change":"Instances from :g:`DecidableClass` moved to `Bool`, `PeanoNat`, `BinInt`","change_number":["17021"]}
{"version":"8.18.0","category":"Standard library","type":"Changed","change":"`btauto.Algebra.bool` hint changed from :attr:`global` to :attr:`export`","change_number":["17281"]}
{"version":"8.18.0","category":"Standard library","type":"Changed","change":"`xorb` has a simpler definition","change_number":["17427"]}
{"version":"8.18.0","category":"Standard library","type":"Changed","change":"Various renames and modifications in `Reals/RIneq.v` (e.g. `completeness_weak`→`upper_bound_thm`)","change_number":["17036"]}
{"version":"8.18.0","category":"Standard library","type":"Removed","change":"Deprecated definitions like `Datatypes.prod_curry`, `Bool.leb`, etc.","change_number":["16920"]}
{"version":"8.18.0","category":"Standard library","type":"Deprecated","change":":g:`List.app_nil_end`, :g:`List.app_assoc_reverse`, :g:`List.ass_app`, :g:`List.app_ass`","change_number":["16920"]}
{"version":"8.18.0","category":"Standard library","type":"Deprecated","change":"`Coq.Lists.List.Forall2_refl`","change_number":["17646"]}
{"version":"8.18.0","category":"Standard library","type":"Deprecated","change":":g:`ZArith.Zdigits`","change_number":["17733"]}
{"version":"8.18.0","category":"Standard library","type":"Deprecated","change":":g:`Numbers.Cyclic.Int31.Cyclic31` and variants (since 8.10)","change_number":["17734"]}
{"version":"8.18.0","category":"Standard library","type":"Deprecated","change":"Some lemmas in `Reals/RIneq.v`, e.g. :g:`inser_trans_R`, :g:`IZR_neq`, etc.","change_number":["17036"]}
{"version":"8.18.0","category":"Standard library","type":"Added","change":"Lemmas `olift`, `pred_oapp`, etc. ported from math-comp PR #872/#874","change_number":["16158"]}
{"version":"8.18.0","category":"Standard library","type":"Added","change":"Lemmas around `Permutation`/`List` (Permutation_incl_cons_inv_r, etc.)","change_number":["15986"]}
{"version":"8.18.0","category":"Standard library","type":"Added","change":"Modules `Nat.Div0`/`Nat.Lcm0` and `N.Div0`/`N.Lcm0`","change_number":["16203","16186"]}
{"version":"8.18.0","category":"Standard library","type":"Added","change":"`measure_induction` in `Nat` and `N`","change_number":["16203"]}
{"version":"8.18.0","category":"Standard library","type":"Added","change":"`Listing_decidable_eq`, `Finite_dec`, `NoDup_list_decidable`","change_number":["16489"]}
{"version":"8.18.0","category":"Standard library","type":"Added","change":"`not_NoDup`, `NoDup_app_remove_l`, `NoDup_app_remove_r`","change_number":["16588"]}
{"version":"8.18.0","category":"Standard library","type":"Added","change":"`skipn_skipn`","change_number":["16632"]}
{"version":"8.18.0","category":"Standard library","type":"Added","change":"`nth_error_ext`, `map_repeat`, `rev_repeat` in `List.v`; `to_list_nil_iff`, `to_list_inj` in `VectorSpec.v`","change_number":["16756"]}
{"version":"8.18.0","category":"Standard library","type":"Added","change":"Transparent `extgcd` to replace opaque `euclid` in `Znumtheory`","change_number":["16915"]}
{"version":"8.18.0","category":"Infrastructure and dependencies","type":"Changed","change":"Entirely built with Dune; must use new build instructions","change_number":["15560"]}
{"version":"8.18.0","category":"Infrastructure and dependencies","type":"Changed","change":"Not compiled with `-rectypes` by default","change_number":["16007"]}
{"version":"8.18.0","category":"Infrastructure and dependencies","type":"Changed","change":"Dune >= 2.9","change_number":["16118"]}
{"version":"8.18.0","category":"Infrastructure and dependencies","type":"Changed","change":"Makefile “pretty-timed” targets strip absolute prefixes from paths","change_number":["16268"]}
{"version":"8.18.0","category":"Infrastructure and dependencies","type":"Changed","change":"Default to `-native-compiler no` in Coq’s configure","change_number":["16997"]}
{"version":"8.18.0","category":"Infrastructure and dependencies","type":"Removed","change":"`-coqide` and `-nomacintegration`","change_number":["16512","16531"]}
{"version":"8.18.0","category":"Infrastructure and dependencies","type":"Added","change":"Coq now supports OCaml 5, though `native_compute` is unavailable","change_number":["15494"]}
{"version":"8.18.0","category":"Infrastructure and dependencies","type":"Added","change":"Officially supports OCaml 4.14","change_number":["15867"]}
{"version":"8.18.0","category":"Miscellaneous","type":"Changed","change":"Module names added to loadpath in alphabetical order, not directory order","change_number":["16725"]}
{"version":"8.17.0","category":"Kernel","type":"Fixed","change":":tacn:`vm_compute` inconsistency by removing a vulnerable cache","change_number":["16958","16957"]}
{"version":"8.17.0","category":"Kernel","type":"Fixed","change":"Unexpected anomaly in fixpoint termination with inaccessible branches","change_number":["17116","17073"]}
{"version":"8.17.0","category":"Specification language, type inference","type":"Changed","change":"The “Unused variable ‘ident’ might be a misspelled constructor” warning triggers even if the variable matches a single case","change_number":["16135"]}
{"version":"8.17.0","category":"Specification language, type inference","type":"Fixed","change":"Pattern-matching clauses lost for a constructor from a singleton inductive under implicit coercions","change_number":["17138","17137"]}
{"version":"8.17.0","category":"Specification language, type inference","type":"Fixed","change":"Possible anomaly with `term.(proj)` if projection is from a section","change_number":["17174","17173"]}
{"version":"8.17.0","category":"Notations","type":"Changed","change":"New lexical rule: if multiple tokens match the same characters, the longest matching token that does not cut inside a contiguous letter group is used","change_number":["16322","4712"]}
{"version":"8.17.0","category":"Notations","type":"Added","change":"`Enable Notation` / `Disable Notation` to toggle previously defined notations","change_number":["12324","16945"]}
{"version":"8.17.0","category":"Notations","type":"Added","change":"Multiple scopes in :cmd:`Arguments`, e.g. `Arguments foo _%scope _%other`","change_number":["16472"]}
{"version":"8.17.0","category":"Notations","type":"Added","change":":attr:`add_top` / :attr:`add_bottom` for `Bind Scope` to attach multiple scopes","change_number":["16472"]}
{"version":"8.17.0","category":"Tactics","type":"Changed","change":"Documented grammar is now correct for the tactics chapter","change_number":["15015","16498","16659"]}
{"version":"8.17.0","category":"Tactics","type":"Changed","change":":tacn:`eauto` respects `Extern` hint priorities","change_number":["16289","5163","16282"]}
{"version":"8.17.0","category":"Tactics","type":"Changed","change":":tacn:`auto` is more consistent with :tacn:`simple apply` and :tacn:`exact`","change_number":["16293","16062","16323"]}
{"version":"8.17.0","category":"Tactics","type":"Removed","change":"`absurd_hyp` tactic (use :tacn:`contradict`)","change_number":["16670"]}
{"version":"8.17.0","category":"Tactics","type":"Removed","change":"Undocumented `progress_evars` tactical","change_number":["16843"]}
{"version":"8.17.0","category":"Tactics","type":"Deprecated","change":"Default `intuition_solver` uses `auto with *`, now warns with `intuition-auto-with-star`","change_number":["16026"]}
{"version":"8.17.0","category":"Tactics","type":"Deprecated","change":"The `>` clear modifier","change_number":["16407"]}
{"version":"8.17.0","category":"Tactics","type":"Fixed","change":":tacn:`auto` updates local hypotheses after a hint is applied","change_number":["16302","15814","6332"]}
{"version":"8.17.0","category":"Tactics","type":"Fixed","change":":tacn:`destruct ... using ...` is now more aligned with :tacn:`destruct ...`","change_number":["16605"]}
{"version":"8.17.0","category":"Tactics","type":"Fixed","change":"Typeclass inference sometimes lost holes","change_number":["16743","5239"]}
{"version":"8.17.0","category":"Ltac language","type":"Changed","change":"`Ltac ::= ...` redefinitions now respect :attr:`local`","change_number":["16106"]}
{"version":"8.17.0","category":"Ltac language","type":"Changed","change":"In :tacn:`match goal`, “hyp := body : typ” is sugar only for a default cast","change_number":["16764"]}
{"version":"8.17.0","category":"Ltac2 language","type":"Changed","change":"`Ltac2.Bool` notations moved into `Ltac2.Bool.BoolNotations`","change_number":["16536"]}
{"version":"8.17.0","category":"Ltac2 language","type":"Changed","change":"`Constr.in_context` enforces the “constr is a type” requirement","change_number":["16547","16540"]}
{"version":"8.17.0","category":"Ltac2 language","type":"Changed","change":"Goal matching functions in `Ltac2.Pattern` changed type","change_number":["16655"]}
{"version":"8.17.0","category":"Ltac2 language","type":"Added","change":"Deep pattern matching with `match x with` + `as`, records, literal ints","change_number":["16023","16179"]}
{"version":"8.17.0","category":"Ltac2 language","type":"Added","change":"`Message.to_string`, `String.concat`, `String.cat`, `String.equal`, etc.","change_number":["16217"]}
{"version":"8.17.0","category":"Ltac2 language","type":"Added","change":"`Ltac2.Constr.Unsafe.liftn`","change_number":["16413"]}
{"version":"8.17.0","category":"Ltac2 language","type":"Added","change":"`Ltac2.Constr.Unsafe.closedn`, `is_closed`, `occur_between`, `occurn`","change_number":["16414"]}
{"version":"8.17.0","category":"Ltac2 language","type":"Added","change":"`Ltac2.List.equal`","change_number":["16429"]}
{"version":"8.17.0","category":"Ltac2 language","type":"Added","change":":cmd:`Print Ltac2`, :cmd:`Print Ltac2 Signatures`, :cmd:`Locate` can find Ltac2 definitions","change_number":["16466","16418","16415"]}
{"version":"8.17.0","category":"Ltac2 language","type":"Added","change":"`Ltac2.Array.for_all2`, `Ltac2.Array.equal`","change_number":["16535"]}
{"version":"8.17.0","category":"Ltac2 language","type":"Added","change":"`Ltac2.Constant.equal` & many `equal` for Constructors, Evars, Floats, etc.","change_number":["16537"]}
{"version":"8.17.0","category":"Ltac2 language","type":"Added","change":"`Ltac2.Option.equal`","change_number":["16538"]}
{"version":"8.17.0","category":"Ltac2 language","type":"Added","change":"Syntax for Ltac2 record update `{ foo with field := bar }`","change_number":["16552","10117"]}
{"version":"8.17.0","category":"Ltac2 language","type":"Added","change":"Record punning in Ltac2, e.g. `{ foo; M.bar }`","change_number":["16556"]}
{"version":"8.17.0","category":"Ltac2 language","type":"Added","change":"`match! goal` can match hypothesis bodies","change_number":["16655","12803"]}
{"version":"8.17.0","category":"Ltac2 language","type":"Added","change":"Quotation & syntax class for “preterm”","change_number":["16740"]}
{"version":"8.17.0","category":"SSReflect","type":"Added","change":"`olift`, `pred_oapp`, etc. from math-comp","change_number":["16158"]}
{"version":"8.17.0","category":"Commands and options","type":"Changed","change":"Commands setting tactic options now support :attr:`export`","change_number":["15274"]}
{"version":"8.17.0","category":"Commands and options","type":"Changed","change":"No “locality attribute omitted” warnings for `Hint` / `Instance` become errors now","change_number":["16004"]}
{"version":"8.17.0","category":"Commands and options","type":"Changed","change":"Program transparent obligations no longer produce an implicit `Hint Unfold`","change_number":["16340"]}
{"version":"8.17.0","category":"Commands and options","type":"Changed","change":"`Print Typeclasses` replaces `Print TypeClasses`","change_number":["16690","16686"]}
{"version":"8.17.0","category":"Commands and options","type":"Changed","change":"`-async-proofs-tac-j=0` means no new processes for `par`","change_number":["16837"]}
{"version":"8.17.0","category":"Commands and options","type":"Removed","change":"The “Program Naming” flag","change_number":["16519"]}
{"version":"8.17.0","category":"Commands and options","type":"Removed","change":"Undocumented/broken `Solve Obligation`","change_number":["16842"]}
{"version":"8.17.0","category":"Commands and options","type":"Deprecated","change":"`:>` syntax for typeclass instance fields replaced by `::`","change_number":["16230"]}
{"version":"8.17.0","category":"Commands and options","type":"Added","change":"Better doc for :cmd:`Proof using`","change_number":["16168"]}
{"version":"8.17.0","category":"Commands and options","type":"Added","change":"`::` syntax for typeclass instance fields","change_number":["16230"]}
{"version":"8.17.0","category":"Commands and options","type":"Added","change":":cmd:`Print Keywords`","change_number":["16438"]}
{"version":"8.17.0","category":"Commands and options","type":"Added","change":":cmd:`Print Grammar` for arbitrary nonterminals","change_number":["16440"]}
{"version":"8.17.0","category":"Commands and options","type":"Fixed","change":":flag:`Fast Name Printing` no longer captures variable names","change_number":["16395"]}
{"version":"8.17.0","category":"Commands and options","type":"Fixed","change":":tacn:`vm_compute` respects `bytecode-compiler`","change_number":["16931"]}
{"version":"8.17.0","category":"Commands and options","type":"Fixed","change":":cmd:`Proof Mode` errors if nonexistent","change_number":["16981"]}
{"version":"8.17.0","category":"Commands and options","type":"Fixed","change":"Backtracking over grammar modifications","change_number":["17069"]}
{"version":"8.17.0","category":"Commands and options","type":"Fixed","change":"Anomaly in :cmd:`Function` with an applied `fix`","change_number":["17113"]}
{"version":"8.17.0","category":"Command-line tools","type":"Changed","change":"`coq_makefile` no longer passes `-rectypes` to OCaml","change_number":["17038"]}
{"version":"8.17.0","category":"Command-line tools","type":"Changed","change":"`coqdoc` no longer indexes variable binders by default","change_number":["17045"]}
{"version":"8.17.0","category":"Command-line tools","type":"Added","change":"`coqdoc` can now unify references","change_number":["17118"]}
{"version":"8.17.0","category":"Command-line tools","type":"Added","change":"`-require lib` / `-require-from root lib`","change_number":["17364"]}
{"version":"8.17.0","category":"Command-line tools","type":"Added","change":"`coqtimelog2html` to render timing logs","change_number":["17411"]}
{"version":"8.17.0","category":"Command-line tools","type":"Fixed","change":"`coq_makefile` large “install” commands replaced by smaller ones","change_number":["17697"]}
{"version":"8.17.0","category":"CoqIDE","type":"Changed","change":"XML protocol includes line+column info","change_number":["17382","17023"]}
{"version":"8.17.0","category":"Standard library","type":"Changed","change":"`Vector.nth` is strict","change_number":["16731","16738"]}
{"version":"8.17.0","category":"Standard library","type":"Changed","change":"`set_diff_nodup` drops second NoDup assumption","change_number":["16926"]}
{"version":"8.17.0","category":"Standard library","type":"Changed","change":"Instances from `DecidableClass` moved","change_number":["17021"]}
{"version":"8.17.0","category":"Standard library","type":"Changed","change":"`btauto.Algebra.bool` hint is now :attr:`export`","change_number":["17281"]}
{"version":"8.17.0","category":"Standard library","type":"Changed","change":"`xorb` simplified","change_number":["17427"]}
{"version":"8.17.0","category":"Standard library","type":"Changed","change":"Renames in `Reals/RIneq.v`","change_number":["17036"]}
{"version":"8.17.0","category":"Standard library","type":"Removed","change":"Old definitions like `Datatypes.prod_curry`","change_number":["16920"]}
{"version":"8.17.0","category":"Standard library","type":"Deprecated","change":"`Coq.Lists.List.Forall2_refl`","change_number":["17646"]}
{"version":"8.17.0","category":"Standard library","type":"Deprecated","change":"`ZArith.Zdigits`","change_number":["17733"]}
{"version":"8.17.0","category":"Standard library","type":"Deprecated","change":"`Numbers.Cyclic.Int31.Cyclic31`","change_number":["17734"]}
{"version":"8.17.0","category":"Standard library","type":"Deprecated","change":"Various `Reals/RIneq.v` lemmas","change_number":["17036"]}
{"version":"8.17.0","category":"Standard library","type":"Added","change":"`olift` and `pred_oapp`, plus new lemmas from math-comp","change_number":["16158"]}
{"version":"8.17.0","category":"Standard library","type":"Added","change":"Extra Permutation/List lemmas","change_number":["15986"]}
{"version":"8.17.0","category":"Standard library","type":"Added","change":"`Nat.Div0` / `Nat.Lcm0` / `N.Div0` / `N.Lcm0`","change_number":["16203"]}
{"version":"8.17.0","category":"Standard library","type":"Added","change":"`measure_induction` in `Nat` and `N`","change_number":["16203"]}
{"version":"8.17.0","category":"Standard library","type":"Added","change":"`Listing_decidable_eq`, `Finite_dec`, `NoDup_list_decidable`","change_number":["16489"]}
{"version":"8.17.0","category":"Standard library","type":"Added","change":"`not_NoDup`, `NoDup_app_remove_l`, `NoDup_app_remove_r`","change_number":["16588"]}
{"version":"8.17.0","category":"Standard library","type":"Added","change":"`skipn_skipn`","change_number":["16632"]}
{"version":"8.17.0","category":"Standard library","type":"Added","change":"`nth_error_ext`, `map_repeat`, `rev_repeat` in `List.v`; `to_list_nil_iff`, `to_list_inj` in `VectorSpec.v`","change_number":["16756"]}
{"version":"8.17.0","category":"Standard library","type":"Added","change":"Transparent `extgcd` in `Znumtheory`","change_number":["16915"]}
{"version":"8.17.0","category":"Infrastructure and dependencies","type":"Changed","change":"Dune-only build","change_number":["15560"]}
{"version":"8.17.0","category":"Infrastructure and dependencies","type":"Changed","change":"Not compiled with `-rectypes` anymore","change_number":["16007"]}
{"version":"8.17.0","category":"Infrastructure and dependencies","type":"Changed","change":"Dune >= 2.9","change_number":["16118"]}
{"version":"8.17.0","category":"Infrastructure and dependencies","type":"Changed","change":"`pretty-timed` targets in Makefiles strip absolute path prefixes","change_number":["16268"]}
{"version":"8.17.0","category":"Infrastructure and dependencies","type":"Changed","change":"`-native-compiler no` by default","change_number":["16997"]}
{"version":"8.17.0","category":"Infrastructure and dependencies","type":"Removed","change":"`-coqide` and `-nomacintegration`","change_number":["16512","16531"]}
{"version":"8.17.0","category":"Infrastructure and dependencies","type":"Added","change":"OCaml 5 support (still no `native_compute`)","change_number":["15494"]}
{"version":"8.17.0","category":"Infrastructure and dependencies","type":"Added","change":"Officially supports OCaml 4.14","change_number":["15867"]}
{"version":"8.17.0","category":"Miscellaneous","type":"Changed","change":"Module names added to loadpath in alphabetical order, not directory order","change_number":["16725"]}
{"version":"8.17.1","category":"Command-line tools","type":"Fixed","change":"coqdep emitted incorrect paths for META files, breaking some dune plugin builds","change_number":["17270","16571"]}
{"version":"8.17.1","category":"Extraction","type":"Fixed","change":"Shadowing of record fields in extracted OCaml code","change_number":["17324","12813","14843","16677"]}
{"version":"8.17.1","category":"Infrastructure","type":"Fixed","change":"“backtracking and redoing byextend on …” debug message is now fully off","change_number":["17495","17488"]}
{"version":"8.17.1","category":"Infrastructure","type":"Fixed","change":"Major memory regression with typeclass inference in certain cases","change_number":["17743"]}