Add icons to completion candidates using the built in completion metadata functions.

This package can be used with the default completions buffer:

Or with a completion framework such as Vertico:

This package only supports Emacs version 26.1 and above.

It requires all-the-icons.

This package can be installed from MELPA, or by cloning it and putting it in the load path.

Add the following to your init-file:

(all-the-icons-completion-mode)

If you want to use it as an addon to marginalia-mode, add the following to your init-file:

(all-the-icons-completion-mode)
(add-hook 'marginalia-mode-hook #'all-the-icons-completion-marginalia-setup)

This will ensure that it is on when marginalia-mode is on and is off when it’s off.

Completion icons are retrieved through the generic function all-the-icons-completion-get-icon, with different methods per category. To add icons for a new category or override existing behaviour, define a new method, e.g.:

(cl-defmethod all-the-icons-completion-get-icon (cand (_cat (eql custom-category)))
  "Return the icon for the candidate CAND of completion category custom-category."
  (get-icon-for-custom-category-cand cand))

Thanks to @minad and @noctuid for getting the ball rolling on the functions used in this package.