OCaml Changelog

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)