How to include org-mode easy templates into company-mode completions?

Question

Within org-mode, I use easy templates a lot. But I also use company-mode and easy templates are not listed there, even though I've managed to add support for some of the org-mode keywords (see here). Does anyone know how to achieve this?

Answer 1

You could add your own completion function to completion-at-point-functions and add company-capf to company-backends:

(defun org-easy-template--completion-table (str pred action)
  (pcase action
    (`nil (try-completion  str org-structure-template-alist pred))
    (`t   (all-completions str org-structure-template-alist pred))))

(defun org-easy-template--annotation-function (s)
  (format " -> %s" (cadr (assoc s org-structure-template-alist))))

(defun org-easy-template-completion-function ()
  (when (looking-back "^[ \t]*<\\([^ \t]*\\)" (point-at-bol))
    (list
     (match-beginning 1) (point)
     'org-easy-template--completion-table
     :annotation-function 'org-easy-template--annotation-function
     :exclusive 'no)))

(defun add-easy-templates-to-capf ()
  (add-hook 'completion-at-point-functions
            'org-easy-template-completion-function nil t))

(add-hook 'org-mode-hook #'add-easy-templates-to-capf)

Answer 2

Since I'haven't seen a direct answer to my question yet, here's a workaround using yasnippet: simply define a snippet for every easy template.

1. M-x yas-new-snippet
2. Insert name, key, and content like this:

    # -*- mode: snippet -*-
    # name: latex export
    # key: l_
    # --
    #+BEGIN_EXPORT latex
    $0
    #+END_EXPORT

3. Store it in your_snippet_folder/org-mode.

One could also use the key <l instead of l_, but this doesn't play well together with company.