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| | ;;; notmuch-company.el --- Mail address completion for notmuch via company-mode -*- lexical-binding: t -*-
;; Copyright © Trevor Jim
;; Copyright © Michal Sojka
;;
;; This file is part of Notmuch.
;;
;; Notmuch 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.
;;
;; Notmuch 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 Notmuch. If not, see <https://www.gnu.org/licenses/>.
;;
;; Authors: Trevor Jim <tjim@mac.com>
;; Michal Sojka <sojkam1@fel.cvut.cz>
;;
;; Keywords: mail, completion
;;; Commentary:
;; Mail address completion for notmuch via company-mode. To enable
;; this, install company mode from <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-lib))
(require 'notmuch-lib)
(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)
(defvar company-idle-delay)
(declare-function notmuch-address-harvest "notmuch-address")
(declare-function notmuch-address-harvest-trigger "notmuch-address")
(declare-function notmuch-address-matching "notmuch-address")
(declare-function notmuch-address--harvest-ready "notmuch-address")
(defvar notmuch-address-completion-headers-regexp)
(defvar notmuch-address-command)
;;;###autoload
(defun notmuch-company-setup ()
(company-mode)
(make-local-variable 'company-backends)
(setq company-backends '(notmuch-company))
;; Disable automatic company completion unless an internal
;; completion method is configured. Company completion (using
;; internal completion) can still be accessed via standard company
;; functions, e.g., company-complete.
(unless (eq notmuch-address-command 'internal)
(notmuch-setq-local company-idle-delay nil)))
;;;###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))
(cl-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--harvest-ready)
;; 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))
(post-completion
(run-hook-with-args 'notmuch-address-post-completion-functions arg))
(no-cache t))))
(provide 'notmuch-company)
;;; notmuch-company.el ends here
|