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