Ocaml formatting

[arpangreat]

Hey, if anyone can share how to format ocaml code in helix it would be really great.

[lentil32]

[[language]]
name = "ocaml"
formatter = { command = "ocamlformat", args = [
  "-",
  "--impl",
  # "--enable-outside-detected-project", # Enable only if you want to format files outside of projects
] }

Refer to: Editor setup | ocamlformat 0.26.1 (latest) · OCaml Package

[arpangreat]

Thanks buddy.

[gyreas]

make sure your project directory has a file: .ocamlformat with eg:

#.ocamlformat
profile=default # you can use 'janestreet'
version=0.26.1 # check yours with ocamlformat --version

[lentil32]

With --enable-outside-detected-project, you can format files without project-wise .ocamlformat. But it is not expected one to be default, so I edited my answer. Refer to link from the answer and manpage:

(*) .ocamlformat files in current and all ancestor directories for each
     input file are used, applied from top to bottom, overriding the
     settings each time a file is applied, stopping at the project root. If
     no project root and no ocamlformat file has been found, and if the
     option enable-outside-detected-project is set, the global ocamlformat
     file defined in $XDG_CONFIG_HOME (or in $HOME/.config if
     $XDG_CONFIG_HOME is undefined) is used.

--enable-outside-detected-project
    Read .ocamlformat config files outside the current project when no
    project root has been detected for the input file. The project root
    of an input file is taken to be the nearest ancestor directory that
    contains a .git or .hg or dune-project file. If .ocamlformat config
    files are located in the same directory or parents they are
    applied, if no .ocamlformat file is found then the global
    configuration defined in $XDG_CONFIG_HOME/.ocamlformat (or in
    $HOME/.config/.ocamlformat if $XDG_CONFIG_HOME is undefined) is
    applied.

---

Edit

You can set global configs in $XDG_CONFIG_HOME/ocamlformat.
But, the config is not being used if dune-project file exist... weird.
I.e., when dune-project exists and no project-wise .ocamlformat exist, unconfigured default foramtting will be used.

Refer to: Bug?: --enable-outside-detected-project does not use global configuration in projects · Issue #2509 · ocaml-ppx/ocamlformat