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| | ;;; notmuch-company.el --- Mail address completion for notmuch via company-mode -*- lexical-binding: t -*-
;; Authors: Trevor Jim <tjim@mac.com>
;; Michal Sojka <sojkam1@fel.cvut.cz>
;;
;; Keywords: mail, completion
;; This program is free software; you can redistribute it and/or modify
;; it under the terms of the GNU General Public License as published by
;; the Free Software Foundation, either version 3 of the License, or
;; (at your option) any later version.
;; This program is distributed in the hope that it will be useful,
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
;; GNU General Public License for more details.
;; You should have received a copy of the GNU General Public License
;; along with this program. If not, see <http://www.gnu.org/licenses/>.
;;; Commentary:
;; To enable this, install company mode (https://company-mode.github.io/)
;;
;; NB company-minimum-prefix-length defaults to 3 so you don't get
;; completion unless you type 3 characters
;;; Code:
(eval-when-compile (require 'cl))
(defvar notmuch-company-last-prefix nil)
(make-variable-buffer-local 'notmuch-company-last-prefix)
(declare-function company-begin-backend "company")
(declare-function company-grab "company")
(declare-function company-mode "company")
(declare-function company-manual-begin "company")
(defvar company-backends)
(declare-function notmuch-address-harvest "notmuch-address")
(declare-function notmuch-address-harvest-trigger "notmuch-address")
(declare-function notmuch-address-matching "notmuch-address")
(defvar notmuch-address-full-harvest-finished)
(defvar notmuch-address-completion-headers-regexp)
;;;###autoload
(defun notmuch-company-setup ()
(company-mode)
(make-local-variable 'company-backends)
(setq company-backends '(notmuch-company)))
;;;###autoload
(defun notmuch-company (command &optional arg &rest _ignore)
"`company-mode' completion back-end for `notmuch'."
(interactive (list 'interactive))
(require 'company)
(let ((case-fold-search t)
(completion-ignore-case t))
(case command
(interactive (company-begin-backend 'notmuch-company))
(prefix (and (derived-mode-p 'message-mode)
(looking-back (concat notmuch-address-completion-headers-regexp ".*")
(line-beginning-position))
(setq notmuch-company-last-prefix (company-grab "[:,][ \t]*\\(.*\\)" 1 (point-at-bol)))))
(candidates (cond
(notmuch-address-full-harvest-finished
;; Update harvested addressed from time to time
(notmuch-address-harvest-trigger)
(notmuch-address-matching arg))
(t
(cons :async
(lambda (callback)
;; First run quick asynchronous harvest based on what the user entered so far
(notmuch-address-harvest
arg nil
(lambda (_proc _event)
(funcall callback (notmuch-address-matching arg))
;; Then start the (potentially long-running) full asynchronous harvest if necessary
(notmuch-address-harvest-trigger))))))))
(match (if (string-match notmuch-company-last-prefix arg)
(match-end 0)
0))
(no-cache t))))
(provide 'notmuch-company)
;;; notmuch-company.el ends here
|