ElixirSyntax was initially based on the Elixir.tmbundle package but has been rewritten since, providing more accurate syntax matching as well as better syntax highlighting.

• Working Goto Definition command.
• HTML template highlighting:
  • HEEx:
  • Surface:
  • LiveView:
• Full PCRE syntax highlighting:
• Type highlighting:
• Theme adaptations for Mariana and Monokai.
• Palette commands: ElixirSyntax: ..., Mix Test: ..., Mix Format: ...
• Build commands: mix format, mix test, elixir $file
• Snippets for IO.inspect, tap and then.

Some syntax highlighting features are not immediately evident. Among them are:

SQL syntax is highlighted inside Ecto's fragment macro.

Add an sql macro/function to your project to enjoy SQL highlighting anywhere it's used.

Embed JSON strings in your Elixir code. Notice the interpolated Elixir code is colored correctly.

Build-files as well as commands are provided for calling mix test. The predefined shortcuts can be changed via Preferences > Package Settings > ElixirSyntax > Key Bindings.

Tip: To run specific tests in the current file, mark them with multiple cursors and/or spanning selections and press Alt+Shift+T or choose Mix Test: Selection(s) from the palette.

ElixirSyntax stores a per-project JSON settings file in the root folder that contains both the mix.exs file and the _build/ folder. They override the general settings below.

General settings example (via Preferences > Package Settings > ElixirSyntax > Settings):

{
  "mix_test": {
    "output": "tab",
    "output_mode": null,
    "args": ["--coverage"],
    "seed": null
  }
}

When a mix test command is run the first time, a mix_test.repeat.json file is stored in the _build/ folder to remember the command arguments. By pressing Alt+Shift+R or running Mix Test: Repeat from the palette you can repeat the previously executed tests.

Use the default shortcut Alt+Shift+F or the palette command Mix Format: File to format your Elixir code. Format the whole project via Mix Format: Project / Folder. Configure auto-formatting on save via the palette command Mix Format: Toggle Auto-Formatting or via the menu Preferences > Package Settings > ElixirSyntax > Settings. There is no per-project auto-format setting yet.

{
  "mix_format": {
    "on_save": true
  }
}

• ElixirSyntax: Settings
• ElixirSyntax: Open Hex Docs
• ElixirSyntax: Search Hex Packages
• Mix Test: Settings
• Mix Test: All
• Mix Test: File
• Mix Test: Selection(s)
• Mix Test: Failed
• Mix Test: Repeat
• Mix Test: Set --seed
• Mix Test: Toggle --stale Flag
• Mix Test: Switch to Code or Test
• Mix Test: Show Panel
• Mix Format: File
• Mix Format: Project / Folder
• Mix Format: Toggle Auto-Formatting

• LSP and LSP-elixir for intelligent code completion and additional snippet suggestions.

See CHANGELOG.md for the list of releases and noteworthy changes.

• How to color unused variables, e.g. _opts, differently?

  You can customize the color of unused variable names by extending your color scheme, targeting the variable.parameter.unused and variable.other.unused scopes:

  {
    "rules": [
      {
        "name": "Unused variables",
        "scope": "variable.parameter.unused, variable.other.unused",
        "foreground": "#8c8cff"
      }
    ]
  }

  More details at Sublime Text Docs

• @azizk rewrote the whole syntax definition with an extensive test-suite and added a wealth of new features. ⭐
• @princemaple initially brought the tm-syntax to sublime-syntax and made some improvements.