OCaml Changelog

• Allow ppx rewriters to specify when they should be applied

• Switch default branch from 2.0.0 to master
• Minor fix

Oops, we went looking but didn't find the changelog for this release 🙈

• Enrich the dune Emacs mode with syntax highlighting and indentation. New file dune-flymake to provide a hook dune-flymake-dune-mode-hook to enable linting of dune files. (#1265, @Chris00)

• Pass link_flags to cc when compiling with Configurator.V1.c_test (#1274, @rgrinberg)

• Fix digest calculation of aliases. It should take into account extra bindings passed to the alias (#1277, fix #1276, @rgrinberg)

• Fix a bug causing dune to fail eagerly when an optional library isn't available (#1281, @jeremiedimino)

• ocamlmklib should use response files only if ocaml >= 4.08 (@1268, @bryphe)

• Ignore stderr output when trying to find out the number of jobs available (#1118, fix #1116, @jeremiedimino)

• Fix error message when the source directory of copy_files does not exist. (#1120, fix #1099, @emillon)

• Highlight error locations in error messages (#1121, @emillon)

• Display actual stanza when package is ambiguous (#1126, fix #1123, @emillon)

• Add dune unstable-fmt to format dune files. The interface and syntax are still subject to change, so use with caution. (#1130, fix #940, @emillon)

• Improve error message for dune utop without a library name (#1154, fix #1149, @emillon)

• Fix parsing ocamllex stanza in jbuild files (#1150, @rgrinberg)

• Highlight multi-line errors (#1131, @anuragsoni)

• Do no try to generate shared libraries when this is not supported by the OS (#1165, fix #1051, @jeremiedimino)

• Fix Flags.write_{sexp,lines} in configurator by avoiding the use of Stdune.Path (#1175, fix #1161, @rgrinberg)

• Add support for findlib.dynload: when linking an executable using findlib.dynload, automatically record linked in libraries and findlib predicates (#1172, @bobot)

• Add support for promoting a selected list of files (#1192, @jeremiedimino)

• Add an emacs mode providing helpers to promote correction files (#1192, @jeremiedimino)

• Improve message suggesting to remove parentheses (#1196, fix #1173, @emillon)

• Add (wrapped (transition "..message..")) as an option that will generate wrapped modules but keep unwrapped modules with a deprecation message to preserve compatibility. (#1188, fix #985, @rgrinberg)

• Fix the flags passed to the ppx rewriter when using staged_pps (#1218, @jeremiedimino)

• Add (env var) to add a dependency to an environment variable. (#1186, @emillon)

• Add a simple version of a polling mode: dune build -w keeps running and restarts the build when something change on the filesystem (#1140, @kodek16)

• Cleanup the way we detect the library search path. We no longer call opam config var lib in the default build context (#1226, @jeremiedimino)

• Make test stanzas honor the -p flag. (#1236, fix #1231, @emillon)

• Test stanzas take an optional (action) field to customize how they run (#1248, #1195, @emillon)

• Add support for private modules via the private_modules field (#1241, fix #427, @rgrinberg)

• Add support for passing arguments to the OCaml compiler via a response file when the list of arguments is too long (#1256, @jeremiedimino)

• Do not print diffs by default when running inside dune (#1260, @jeremiedimino)

• Interpret $ dune build dir as building the default alias in dir. (#1259, @rgrinberg)

• Make the dynlink library available without findlib installed (#1270, fix #1264, @rgrinberg)

• Improve: simplify setting option defaults, slight --help improvement (#350, @jberdine)
• Improve: update emacs mode to use replace-buffer-contents (#345, @hhugo)
• Improve: add option to not force-break structs (#346, @jberdine)
• Improve: move 'formatting' options into separate section (#348, @gpetiot)
• Improve: fun sugar (@hhugo)
• Improve: add option to omit open lines between one-line module items (#303, @gpetiot)
• Fix: infix ops (@hhugo)
• Improve: reformat files with no locations (@hhugo)
• Improve: better error when max-iters = 1 (@hhugo)
• Improve: breaking before arrows in pattern match cases (@jberdine)
• Improve: no parens for trailing 'not' (@hhugo)
• Improve: missing break hint, fix #331 (@hhugo)
• Improve: comments before match (#330, @jberdine)
• Fix: missing comments (@hhugo)
• Fix: missing attributes due to sugar (@hhugo)
• Fix: parens non trivial rhs for # infix ops (@hhugo)
• Improve: let-module-in break before in (#328, @jberdine)
• Improve: sugar for nestest module_with (@hhugo)
• Improve: attributes on let bindings (#324, @jberdine)
• Improve: wrapping of functor args in type declaration (#315, @gpetiot)
• Fix: comments attachment with infix ops (@hhugo)
• Fix: comments attachment with Pexp_fun (@hhugo)
• Fix: docstrings as attributes (@hhugo)
• Improve: refactor and improve documentation of options (#302, @gpetiot)
• Improve: error reporting in emacs integration (#304, @jberdine)
• Improve: pexp_open as final arg of infix op (#314, @jberdine)
• Fix: missing parens around labeled record pattern arg (@jberdine)
• Fix: missing attributes (@hhugo)
• Fix: duplicated (x3) attributes in pexp_letmodule (@hhugo)
• Improve: allow to locally disable ocamlformat (@hhugo)
• Improve: corner case indentation of fun -> function (#312, @jberdine)
• Improve: labeled, optional, and default args (@jberdine)
• Improve: punning default arg with type constraint (@jberdine)
• Improve: add options to controls various spaces (#284, @hhugo)
• Improve: add option to disable wrapping fun args (#283, @hhugo)
• Improve: add option --break-cases to break each pattern-matching case (#251, @gpetiot)
• Improve: rename --nested-parens option (@hhugo)
• Improve: ws before colon for constraint (#293, @hhugo)
• Improve: option to choose where to parens nested match (@hhugo)
• Improve: always parens nested match (even the right most one) (@hhugo)
• Improve: always break for let_and contruct (@hhugo)
• Fix: missing comments (@hhugo)
• Improve: Add option to preserve style of local module open (#267, @gpetiot)
• Improve: preserve extension point formatting (@hhugo)
• Improve: make double semi consistent between implementation and use_file (#292, @hhugo)
• Improve: configure ocamlformat using attributes (@hhugo)
• Improve: extension point (@hhugo)
• Improve: break in type declaration for variant and record (#280, @hhugo)
• Fix: memory leak (@hhugo)
• Test: add ocaml compiler to test suite, and improve make -C test (@jberdine)
• Fix: unary operator +/- (@hhugo)
• Fix: doc comments in class (@hhugo)
• Fix: ocaml bug, sort fields (@hhugo)
• Improve: empty mod with comments (@hhugo)
• Improve: disable warning generated by the lexer in quiet mode (@hhugo)
• Fix: record update (@hhugo)
• Fix: rec let binding and attribute (@hhugo)
• Fix: punning (@hhugo)
• Fix: let open and constraint (@hhugo)
• Fix: not extension sugar when attribute (@hhugo)
• Fix: no-comment-check missing case (@hhugo)
• Fix: string literal (@hhugo)
• Fix: format of infix in presence of %; (@hhugo)
• Fix: let binding and type annot (@hhugo)
• Fix: binding when lhs is an extension (@hhugo)
• Fix: pat constraint in payload (@hhugo)
• Fix: let rec with extension (@hhugo)
• Fix: comments (@hhugo)
• Fix: comments in fmt_case (@hhugo)
• Fix: comments around Longident (@hhugo)
• Fix: missing comment for pmty_with (@hhugo)
• Improve: add option to disambiguate infix precedence with parens (@jberdine)
• Improve: not when infix op arg (@jberdine)
• Improve: add a flag to skip all checks about comments (@hhugo)
• Improve: breaking of module ident/unpack/extension exps (#269, @jberdine)
• Fix: literal sub-exps with attributes (@jberdine)
• Fix: many fixes regarding attributes (@hhugo)
• Improve: preserve formatting of block comments (#255, @hhugo)
• Improve: breaking of applications with long literal list args (#258, @jberdine)
• Fix: sugar functor (@hhugo)
• Fix: type alias in variant (@hhugo)
• Improve: formatting of comments (@jberdine)
• Fix: prefix operators (@hhugo)
• Fix: exception declarations (@hhugo)
• Fix: doc comments in structure (#250, @hhugo)
• Fix: add parens around pat with trailing attr (@hhugo)
• Fix: let binding and Ppat_or (@hhugo)
• Fix: be more permissive with pattern (@hhugo)
• Fix: fix string_literal with when its location includes its attribute (#244, @hhugo)
• Improve: improve errors returned to the user. (#243, @hhugo)
• Fix: missing comments for Pexp_construct (#240, @hhugo)
• Fix: multiple fixes around classes (#242, @hhugo)
• Fix: comments in empty () and [] (#241, @hhugo)
• Fix: support empty variant (#239, @hhugo)
• Fix: add missing attribute (#238, @hhugo)
• Fix: be more permissive with ppat_interval (#237, @hhugo)
• Improve: remove trailing ws (#210, @hhugo)
• Improve: attributes on type declarations (#232, @jberdine)
• Improve: breaking of infix Array and String get and set ops (#233, @jberdine)
• Fix: attributes and doc comments (#221, @hhugo)
• Improve: spacing of module unpack (#230, @jberdine)
• Improve: no parent for new (@hhugo)
• Fix: Revert: Improve: remove redundant parens around application operators (@hhugo)
• Improve: array alignment (#226, @hhugo)
• Improve: nested array infix ops (#225, @hhugo)
• Fix: is_adjacent and remove [~inclusive] from [Source.string_between] (@hhugo)
• Fix: Cmts.CmtSet.split (@hhugo)
• Improve: Allow comments inside empty delimited "things" (#223, @hhugo)
• Fix: Source.ends_line (#222, @hhugo)
• Improve: empty struct and sig (#217, @hhugo)
• Improve: support for toplevel files (#218, @hhugo)
• Fix: string literal, fix #214 (#219, @hhugo)
• Improve: more tuning for functors (@hhugo)
• Improve: sugar for functor type with multiple args (@hhugo)
• Improve: sugar for functors with multiple args (@hhugo)
• Improve: module type with (@hhugo)
• Improve: break before with/and type (@hhugo)
• Improve: break between fun args (@hhugo)
• Improve: module unpacking (#215, @hhugo)
• Improve: for & while loops (#211, @hhugo)
• Fix: attributes on ite (#209, @hhugo)
• Fix: partially applied (+) and (-) (#208, @hhugo)
• Fix: polymorphic variant (#202, @hhugo)
• Fix: parens with lazy pat (fix #199) (#201, @hhugo)
• Improve: omit excess indentation of function cases (@jberdine)
• Improve: extensions with payloads of multiple structure items (@jberdine)
• Improve: parenthesization and attribute placement of if-then-else (@jberdine)
• Fix: do not attach comments to docstrings (@jberdine)
• Fix: short syntax for extensions (#193, @hhugo)
• Fix: missing attrs for pcl_fun (@hhugo)
• Fix: pos of attribute for functors (@hhugo)
• Fix: () module only if not attrs (@hhugo)
• Fix: missing attrs for object (@hhugo)
• Fix: no short form of extension with attribs (@hhugo)
• Fix: normalization for Pexp_poly and Pexp_constraint (#190, @hhugo)
• Fix: some parenthesization context checks (#189, @hhugo)
• Fix: attributes on fun expressions (@jberdine)
• Fix: extensions with multiple module-level eval expressions (#185, @jberdine)
• Fix: functor & apply (#182, @hhugo)
• Fix: module rec with (@hhugo)
• Fix: more parens in pat_constraint (@hhugo)
• Improve: tuple & constraint (@hhugo)
• Improve: empty module (#178, @hhugo)
• Fix: extensible variant (#177, @hhugo)
• Fix: index operator (#176, @hhugo)
• Improve: empty module sig (@hhugo)
• Fix: add attributes to module signature (@hhugo)
• Add: support for objects and classes (#173, @hhugo)
• Improve: remove some redundant parens around tuple types (@jberdine)
• Fix: args in let bindings (@hhugo)
• Improve: let module%ext (@hhugo)
• Fix: infix op in alias (@hhugo)
• Fix: extensions pat (@hhugo)
• Fix: limit use of short syntax for extensions (@hhugo)
• Improve: allow break after Psig_include (@jberdine)
• Fix: { (a; b) with a; b } (@hhugo)
• Fix: with type [longident] (@hhugo)
• Fix: attributes on polymorphic variants (@hhugo)
• Fix: attribute in let bindings (@hhugo)
• Fix: private in extensible variant (@hhugo)
• Fix: gadt in extensible variant (@hhugo)
• Fix: missing parens in list pattern (@hhugo)
• Improve: format [new e] like an apply (@hhugo)
• Fix: parens for constraint (@hhugo)
• Fix: avoid emitting >] which is an unparsable keyword (#171, @hhugo)
• Fix: misplaced comments on module type of (@jberdine)

• Fix $ jbuilder --dev (#1104, fixes #1103, @rgrinberg)

• Fix dune exec when --build-dir is set to an absolute path (#1105, fixes #1101, @rgrinberg)

• Fix duplicate profile argument in suggested command when an external library is missing (#1109, #1106, @emillon)

• -opaque wasn't correctly being added to modules without an interface. (#1108, fix #1107, @rgrinberg)

• Fix validation of library name fields and make sure this validation also applies when the name is derived from the public_name. (#1110, fix #1102, @rgrinberg)

• Fix a bug causing the toplevel env stanza in the workspace file to be ignored when at least one context had (merlin) (#1114, @diml)

• Fix lookup of command line specified files when --root is given. Previously, passing in --root in conjunction with --workspace or --config would not work correctly (#997, @rgrinberg)

• Add support for customizing env nodes in workspace files. The env stanza is now allowed in toplevel position in the workspace file, or for individual contexts. This feature requires (dune lang 1.1) (#1038, @rgrinberg)

• Add enabled_if field for aliases and tests. This field controls whether the test will be ran using a boolean expression language. (#819, @rgrinberg)

• Make name, names fields optional when a public_name, public_names field is provided. (#1041, fix #1000, @rgrinberg)

• Interpret X in --libdir X as relative to PREFIX when X is relative (#1072, fix #1070, @jeremiedimino)

• Add support for multi directory libraries by writing (include_subdirs unqualified) (#1034, @jeremiedimino)

• Add (staged_pps ...) to support staged ppx rewriters such as ones using the OCaml typer like ppx_import (#1080, fix #193, @jeremiedimino)

• Use -opaque in the dev profile. This option trades off binary quality for compilation speed when compiling .cmx files. (#1079, fix #1058, @rgrinberg)

• Fix placeholders in dune subst documentation (#1090, @emillon, thanks @trefis for the bug report)

• Add locations to errors when a missing binary in PATH comes from a dune file (#1096, fixes #1095, @rgrinberg)

• Fix parsing of %{lib:name:file} forms (#1022, fixes #1019, @diml)

• 4.07.0 compatibility (#238, @hcarty)
• Fix compatibility with latest tuareg-mode (#241, @Wilfred)
• Do not expand include directories (#242, @sliquister)

• Store config files in ~/.config/dune/ instead of ~/.dune to match what dune is doing (#27, @samoht)
• Support opam 1.2.2 when linting (#29, @samoht)
• Use -p <pkg> instead of -n <pkg> to follow dune convention (#30, #42, @samoht)
• Default to nano if the EDITOR environment variable is not set. (#32, @avsm)
• Fix location of documentation when odoc creates an _html subdirectory (#34, @samoht)
• Remove the browse command (#36, @samoht)
• Re-add the publish delegatation mechanism to allow non-GitHub users to publish packages (see dune-release help delegate) (#37, @samoht)
• Fix dropping of v at the beginning of version numbers in dune-release opam (#40, @let-def)
• Add basic token validation (#40, @let-def)

• backend

  • new "polarity search" feature: provides a Hoogle-like type-based search for libraries that are in merlin's scope. See https://github.com/ocaml/merlin/blob/master/doc/features.md#polarity-search
  • new "open refactoring" feature: helps cleaning the code in the scope of an open statement. See https://github.com/ocaml/merlin/blob/master/doc/features.md#open-refactoring
  • spell-checking: a simple spell-checker has been added to suggest corrections when nothing can be directly completed.
  • type-driven record completion: merlin will now make use of type information from the context for narrowing and refining completion candidates.
  • support for #require directive in a source file, and will treat it as a package use
  • Add support for OCaml 4.07
  • locate: various minor bugfixes, as well as the following general improvements:
    • improved context detection
    • better tracking of namespaces
    • fixed support for local bindings
    • fixed support of disambiguated record fields and variant constructors
    • improved support for functors: merlin will now jump through functor application to the functor definitions and in some cases go back to the argument that was given (if it is simply reexported).
  • backport fixes of OCaml 4.06.1 to the 4.06 backend
  • various minor bugfixes

• editor modes

  • emacs
    • proper handling of multibyte strings (by @Chris00)
    • bind "q" to close type buffer (by @MiloDavis)
    • make goto-point encoding independent
    • add reason-mode to the guessed favorite mode list (by @Khady)
    • sped up some tight loops (by @rgrinberg)
    • add support for x-ref backend (by @rgrinberg)
  • vim
    • fix support for Neomake (by @bobbypriambodo and @statianzo)
    • fix encoding issues in filepaths (by @Thelyria)
    • fix handling of enclosing-type cache (by @ELLIOTTCABLE)
    • add to prevent flashing when highlighting an enclosing (by @bluddy)

• Remove opam lint warnings for 1.2 files (#2, @samoht)
• Add a --keep-v option to not drop v at the beginning of version numbers (#6, @samoht)
• Pass -p <package> to jbuilder (#8, @diml)
• Fix a bug in Distrib.write_subst which could cause an infinite loop (#10, @diml)
• Add a --dry-run option to avoid side-effects for all commands (@samoht)
• Rewrite issues numbers in changelog to point to the right repository (#13, @samoht)
• Stop force pushing tags to origin. Instead, just force push the release tag directly to the dev-repo repository (@samoht)
• Fix publishing distribution when the the tag to publish is not the repository HEAD (#4, @samoht)
• Do not depend on opam-publish anymore. Use configuration files stored in ~/.dune to parametrise the publishing workflow. (@samoht)

• Fix handling of --impl/--intf. Before the driver would crash if the file extension was neither .ml nor .mli

Oops, we went looking but didn't find the changelog for this release 🙈

Features

• Add: option to align all infix ops (#150, @hhugo)
• Add: option to attempt to indent the same as ocp-indent (#162)
• Add: option for no discretionary parens for tuples (#157, @hhugo)
• Add: alternative format for if-then-else construct (#155, @hhugo)
• Add: option to customize position of doc comments (#153, @hhugo)

Bug fixes

• Fix: dropped item attributes on module expressions
• Fix: toplevel let%ext (#167, @hhugo)
• Fix: parens around type alias & empty object type (#166, @hhugo)
• Fix: missing comments for [let open] (#165, @hhugo)
• Fix: missing comments in ppat_record (#164, @hhugo)
• Fix: check_typ wrt constraint on module type (#163, @hhugo)
• Fix: let binding with constraint (#160, @hhugo)
• Fix: handle generative functor type (#152, @hhugo)

Formatting improvements

• Improve: remove redundant parens around application operators
• Improve: parenthesize and break infix constructors the same as infix ops
• Improve: consider prefix ops and not to be trivial if their arg is
• Improve: align arrow type args and do not wrap them (#161)
• Improve: formatting for multiple attributes (#154, @hhugo)
• Improve: keep the original string escaping (#159, @hhugo)
• Improve: discretionary parens in patterns (#151, @hhugo)
• Improve: breaking of infix op arguments
• Improve: consider some extensions to be "simple"
• Improve: punning (#158, @hhugo)
• Improve: force break of let module/open/exception/pats (#149, @hhugo)

Build, packaging, and testing

• Add support for bisect (#169, @hhugo)
• Exclude failing tests from make -C test

• Update the AST to 4.06 (#8, @xclerc)
• Deprecate old references to type_conv in argument and rewriter names and add new ones mentioning deriving instead (#7, #9 @xclerc)
• Fix compatibility with -safe-string (#10, @hhugo)
• Restore tests (#11, @xclerc)
• Allow to set the suffix of corrected files (#15, @diml)
• Restore compatibility with OCaml 4.04.x (#16, @xclerc)

• Add support for OCaml 4.07

Features

• Add: support for new%js (#136, @hhugo)
• Add: support for Ptyp_object (#104, @smondet)
• Use original filename when given in error messages. (#96, @mbarbin)

Bug fixes

• Fix: allow extensions in types (#143, @hhugo)
• Fix: parens on symbol type constructor
• Fix: parenthesization of '!=' partial application as a prefix op (#126, @hhugo)
• Fix: parens around Ppat_constraint under Pexp_match or Pexp_try (#124, @hhugo)
• Fix: parenthesization of tuple args of variant type declarations (#122, @hhugo)
• Fix: missing parens around list inside Constr pattern (#123, @hhugo)
• Fix: incorrect breaking of long strings (#130, @hhugo)
• Fix: missing parens inside array literal (#129, @hhugo)
• Fix: attributes on arguments of function (#121, @hhugo)
• Fix: floating docstrings within a type declaration group
• Fix: missing parens in sugared Array.set
• Fix: missing attributes on patterns
• Fix: is_prefix_id for != (#112, @hhugo)
• Fix: missing parens around module value types in signatures (#108, @hcarty)
• Fix: floating docstrings within a value binding group
• Fix: missing attributes on extension points (#102, @hcarty)
• Fix: extensible variants with aliases (#100, @hcarty)
• Fix: several issues with extension sequence expressions
• Fix: generative functors
• Fix: preserve files with an empty ast (instead of failing) (#92, @mbarbin)
• Fix: missing extension on Pexp_sequence
• Fix: missing docstrings and attributes on types
• Fix: missing parens around sugared Array and String operations
• Fix: missing parens around Pexp_newtype
• Fix: missing parens around Ppat_constraint, Ppat_or, and Ppat_unpack
• Fix: dropped space when string wrapped between spaces
• Fix: repeated ppx extension on mutual/recursive let-bindings (#83, @mbarbin)
• Fix: dropped comments on Pmty_typeof
• Fix: missing parens around Ppat_unpack under Ppat_constraint

Formatting improvements

• Improve: two open lines following multiline definition only with --sparse (#144)
• Improve: indent rhs of ref update (#139, @hhugo)
• Improve: no parens around precedence 0 infix ops (refines #115) (#141, @hhugo)
• Improve: support (type a b c) (#142, hhugo)
• Improve: no parens for { !e with a } (#138, @hhugo)
• Improve: no parens for constr inside list pattern. (#140, @hhugo)
• Improve: generative functor applications (#137, @hhugo)
• Improve: omit parens around lists in local opens (#134, @hhugo)
• Prepare for ocaml#1705 (#131, @hhugo)
• Improve: comment wrapping for dangling close
• Improve: if-then-else conditions that break
• Improve: suppress spurious terminal line break in wrapped strings
• Improve: parens for nested constructors in pattern (#125, @hhugo)
• Improve: remove duplicate parens around Ptyp_package
• Improve: indentation after comment within record type declaration
• Improve: add discretionary parens on nested binops with different precedence
• Improve: empty module as functor argument (#113, @hhugo)
• Improve: indentation of multiple attributes
• Improve: attributes on short structure items
• Improve: attributes on type declarations
• Improve: tuple attribute args
• Improve: parenthesization of Ppat_or
• Improve: determination of file kind based on provided name
• Improve: extension on the let at toplevel: e.g. let%expect_test _ (#94, @mbarbin)
• Improve: constraints in punned record fields (#93, @mbarbin)
• Improve: nullary attributes
• Improve: Ppat_tuple under Ppat_array with unnecessary but clearer parens
• Improve: breaking of arguments following wrapped strings

Build, packaging, and testing

• Simplify using (universe) support in jbuilder 1.0+beta20
• Add some regtests (#135, @hhugo)
• Upgrade to Base v0.11.0 (#103, @jeremiedimino)
• Add Travis CI script
• Fix: build [make reason] (#97, @mbarbin)
• Simplify Makefile due to jbuilder 1.0+beta18

• Make sure to import command line arguments registered with ocaml-migrate-parsetree (#5, @diml)
• Fix an issue where cookies set from the command line sometimes disappeared (#6, @diml)

• Fix an issue where cookies set from the command line sometimes disappeared

Oops, we went looking but didn't find the changelog for this release 🙈

• Add a --null argument to suppress the output. This is used to write linters
• Use the new generic ppx driver support of jbuilder

• Add support for company-mode based completion in utop.el (#233)

Features

• Wrap lines in string literals, comments and docstrings
• Improve char escaping to ascii / uniform hexa / utf8 (#73)
• Add support for Pexp_new expressions (#76, @smondet)
• Add support for Pexp_send _ expressions (#72, @smondet)
• Add options to format chars and break strings (#70, @smondet)
• Formatting of %ext on if/while/for/match/try/; (#63, @hcarty)
• Disable formatting with [@@@ocamlformat.disable] (#66, @hcarty)

Formatting improvements

• Improve sequences under if-then-else with unnecessary but safer parens
• Improve optional arguments with type constraints
• Improve let-bound functions with type constraints
• Improve newtype constraints in let-bindings
• Improve placement of exception docstrings

Bug fixes

• Fix missing break hint before comment on sugared []
• Fix formatting of [%ext e1]; e2 (#75, @hcarty)
• Fix missing parens around let exception, let module, for, while under apply
• Fix missing parens under alias patterns
• Fix placement of attributes on extension constructors
• Fix missing parens around unpack patterns
• Fix let-bindings with pattern constraints
• Fix mutually recursive signatures

Features

• Check fatal warnings not only in inplace mode

Documentation

• Improve doc of --no-warn-error
• Mention object language not implemented
• Update documentation of --output

Bug fixes

• Colon instead of arrow before type for GADT constructors with no arguments (@mbouaziz)
• Fix some dropped comments attached to idents
• Fix missing parens around Ppat_alias under Ppat_variant
• Fix module type constraints on functors
• Fix broken record field punning
• Fix broken docstring attachment with multiple docstrings
• Fix missing parens around application operators
• Fix missing parens around Ppat_or under Ppat_variant
• Fix missing/excess parens around Pexp_open under Pexp_apply/Pexp_construct
• Fix duplicated attributes on Pexp_function
• Fix missing parens around Ptyp_package under Pstr_type
• Add '#' to the list of infix operator prefix (@octachron)
• Do not add space between [ and < or > in variant types
• Add a break hint before "constraint" in a type def (@hcarty)

Formatting improvements

• Remove unnecessary parens around Pexp_tuple under Pexp_open
• Improve single-case matches
• Improve constructor arguments
• Remove unnecessary parens around match, etc. with attributes
• Fix missing parens around constraint arg of variant type
• Fix missing parens on left arg of infix list constructor
• Fix missing parens around arrow type args of variant constructors
• Fix missing parens around type of constraints on module exps

Build and packaging

• Separate Format patch into ocamlformat_support package
• Fix test script
• Unbreak build of ocamlformat_reason.ml (@mroch)
• Improve opam installation (JacquesPa)
• Install emacs support via opam package

Features

• Output to stdout if output file omitted

Bug fixes

• Fix Ppat_any value bindings
• Fix missing parens around variant patterns in fun arg
• Fix position of comments attached to end of sugared lists
• Fix missing comments on module names
• Fix package type constraints
• Fix first-class module alias patterns
• Fix first-class module patterns in let bindings
• Fix missing parens around Ptyp_package under Psig_type
• Fix missing "as" in Ptyp_alias formatting (@hcarty)
• Fix let bindings with constraints under 4.06

Formatting improvements

• Improve line breaking of or-patterns
• Improve placement of comments within pattern matches
• Improve clarity of aliased or-patterns with parens
• Improve matches on aliased or-patterns
• Improve infix applications in limbs of if-then-else
• Improve final function arguments following other complex arguments
• Improve consistency of paren spacing after Pexp_fun
• Improve sugar for Pexp_let under Pexp_extension
• Improve sugar for newtype
• Improve first-class module expressions
• Improve indentation when comments are sprinkled through types
• Do not add open line after last binding in a structure

Build and packaging

• Simplify build and packaging, and adopt some common practices
• Add Warnings.Errors argument for < 4.06 compatibility (@hcarty)
• Update base to v0.10.0 (@hcarty)

• Support for standalone documentation pages (.mld files) (#61).
• Display [@@deprecated] attributes as the @deprecated tag (#57).
• Allow each component of OCaml paths to be disambiguated using the kind-identifer syntax (part of #61).
• Support OCaml 4.06.
• Fix spurious leading blank lines in verbatim text (ocaml-doc/octavius#6).

• Fix magic numbers for 4.06 (issue #749, reported by @Fourchaux).

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• 4.06.0 compatibility (#221)

Contributed by @hhugo:

• update Magic Number for 4.06
• fix some compilation warnings

• Fix generation of Migrate_parsetree module.

• Resynchronize with trunk.
• Add a migrating version of Parse module.

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• Resynchronize with trunk. Contributed by Xavier Clerc, @xclerc.

• Add a shallow identity mapper (suggested by Anton Bachin, @aantron).

• fixes related to ppx extensions
• fixed regression on indentation within record types

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• Synchronize with 4.06 AST with trunk.
• Accept --cookie arguments also when run in --as-ppx mode.

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Oops, we went looking but didn't find the changelog for this release 🙈

• Support .opam files
• Add Travis CI tests
• Support the simultaneous publication of multiple packages from the same repo

• fix flag parsing in .merlin (#661)

• Add support for trunk version (as of today...).

• make odoc more noisy when generating html for hidden units
• changed html-deps subcommand behavior: it now expects to be given a directory, not a single odoc file.

• Fix: restore the installation of utop.el (#210, Louis Gesbert)