CHANGES:

Bug fixes

• Fix formatting of odoc tags: the argument should be on the same line, indent description that wraps (#1634, #1635, @gpetiot)

• Consistently format let bindings and monadic let bindings, do not drop comments before monadic bindings (#1636, @gpetiot)

• Fix dropped comments attached to pattern constrained by polynewtype (#1645, @gpetiot)

• Fix comment attachment on infix operators (#1643, @gpetiot)

• Add missing spaces inside begin-end delimiting an ite branch (#1646, @gpetiot)

• Add missing parens around function at RHS of infix op (#1642, @gpetiot)

• Preserve begin-end keywords delimiting match cases (#1651, @gpetiot)

• Fix alignment of closing paren on separate line for anonymous functions (#1649, @gpetiot)

• Preserve begin-end keywords around infix operators (#1652, @gpetiot)

• Preserve begin%ext syntax for infix opererator expressions (#1653, @gpetiot)

• Consistently format comments attached to let-and bindings located at toplevel (#1663, @gpetiot)

• Remove double parens around a functor in a module application (#1681, @gpetiot)

• Improve breaking of comments to avoid violating the margin (#1676, @jberdine)

• Fix parentheses around successive unary operations (#1696, @gpetiot)

• Add missing break between pattern and attribute (#1711, @gpetiot)

• Add missing parentheses around expression having attributes or comments inside a shorthand let-open clause (#1708, @gpetiot)

• Do not consider leading star '*' when checking the diff of doc comments (#1712, @hhugo)

• Fix formatting of multiline non-wrapping comments (#1723, @gpetiot)

Changes

• Improve the diff of unstable docstrings displayed in error messages (#1654, @gpetiot)

• Use UTF8 length of strings, not only in wrapped comments (#1673, @jberdine)

• Improve position of ;; tokens (#1688, @gpetiot)

• Depend on odoc-parser instead of odoc (#1683, #1713, @kit-ty-kate, @jonludlam, @julow) The parser from odoc has been split from the main odoc package and put into its own package, odoc-parser.

• Revert infix-form list formatting to pre-0.17.0 (#1717, @gpetiot)

New features

• Implement OCaml 4.13 features

  • Named existentials in pattern-matching (ocaml#9584)
  • Let-punning (ocaml#10013)
  • Module type substitutions (ocaml#10133) (#1680, @gpetiot)

• Emacs integration (disabled for ocamlformat < 0.19.0):

  • Indent a line or a region with ocamlformat when pressing <TAB>
  • Break the line and reindent the cursor when pressing <ENTER> (#1639, #1685, @gpetiot) (#1687, @bcc32)

• Add 'line-endings=lf|crlf' option to specify the line endings used in the formatted output. (#1703, @nojb)

Internal

• A script tools/build-mingw64.sh is provided to build a native Windows binary of ocamlformat using mingw64 toolchain under Cygwin.