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How do I pronounce rubyfmt

  • en: Ruby format
  • jp: ルビーフォーマット

How do I use it

Install from brew

On Mac and Linux, rubyfmt can be installed with Homebrew:

brew install rubyfmt

Build from source

  1. Make sure you've got cargo installed
  2. Run make all
  3. Copy target/release/rubyfmt-main to somewhere on your path as rubyfmt

Rubyfmt supports the following CLI invocations:

  • <whatever> | rubyfmt pipe from standard in
  • rubyfmt -i -- files or directories to format files and directories in place
  • rubyfmt -- files or directories output rubyfmtted code to STDOUT.
  • rubyfmt -c -- files or directories output a diff of input and rubyformatted input.
  • rubyfmt --header-opt-in -- files or directories to format files only with a # rubyfmt: true comment at the top of the file
  • rubyfmt --header-opt-out -- files or directories to skip formatting files with a # rubyfmt: false comment at the top of the file

rubyfmt also supports ignoring files with a .rubyfmtignore file when present in the root of the working directory. .rubyfmtignore uses the same syntax as .gitignore, so you can choose to ignore whole directories or use globs as needed. By default, rubyfmt also ignores files in .gitignore during file traversal, but you can force these files to be formatted by using the --include-gitignored flag.

Editor Support

Vim

We aren't currently tested with any vim plugin managers, however, adding the plugin from a git clone is fairly easy:

  • Run cargo build --release
  • Add source /path/to/rubyfmt.vim to your ~/.vimrc (e.g. my dotfiles please note, this line is commented)
  • Add let g:rubyfmt_path = /path/to/target/release/rubyfmt-main beneath the source line

Visual Studio Code

Rubyfmt is a supported formatter in the popular vscode ruby extension. You should copy rubyfmt-main to be called rubyfmt on your PATH . Once installed, add the following to vscode's settings.json file:

  "ruby.useLanguageServer": true,
  "ruby.format": "rubyfmt",
  "[ruby]": {
      "editor.formatOnSave": true
  },

RubyMine (and similar Jetbrains family IDE)

Install the File Watchers plugin and go to File | Settings | Tools | File Watchers. Now import watchers.xml from editor_plugins/rubymine/. Optionally set Level to Global to have it available across all projects.

See this reference on using file watchers to learn more.

Sublime Text

Install the rubyfmt plugin from Package Control: Install Package -> rubyfmt.

Ruby files are formatted on save or by pressing Alt + ; or on macOS: Cmd + ;. rubyfmt is assumed to be on path.

Overridable default settings:

{
  "ruby_executable": "ruby",
  "rubyfmt_executable": "rubyfmt",
  "format_on_save": true,
}

Atom

Install the rubyfmt package from Settings > Packages.

Ruby files are formatted on save or by pressing Alt + ; or on macOS: Cmd + ; rubyfmt is assumed to be on path. See the package settings for more options.

Contributing

Please checkout our contributing guide