Question 1

How do I set up code completion in elm-mode?

Accepted Answer

You need to install elm-language-server and an LSP client for Emacs, such as eglot or lsp-mode. Once configured, these provide IntelliSense-like features, but it's not included out-of-the-box in elm-mode.

Question 2

elm-mode vs VS Code Elm extension: which should I use?

Accepted Answer

elm-mode is ideal for Emacs enthusiasts who want deep integration and custom workflows, while VS Code's extension offers a more graphical, beginner-friendly interface with less setup. Choose based on your editor preference and willingness to configure.

Question 3

How to automatically format Elm code on save in Emacs?

Accepted Answer

Enable elm-format-on-save-mode by adding it to your elm-mode-hook. This will run elm-format every time you save a buffer, ensuring consistent styling without manual intervention.

Question 4

Does elm-mode work with Elm 0.19 and above?

Accepted Answer

Yes, elm-mode supports Elm 0.19+, but for features like completion, you must use elm-language-server as noted in the README, since built-in tool integration focuses on core Elm commands.

Question 5

What's the easiest way to run Elm tests from Emacs?

Accepted Answer

Install elm-test and use the keybinding C-c C-v in elm-mode to run the test suite for the current project. Results are displayed in Emacs, but you need to manage elm-test installation separately.

Question 6

How do I generate TAGS for navigation in Elm projects?

Accepted Answer

Use C-c M-t to generate a TAGS file, but this requires UNIX commands like find and egrep in your path. You can also set elm-tags-on-save to regenerate on each save for convenience.

emacs-elm-mode

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