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`outline-minor-mode' treats comments that begin with three or more semicolons as headings. That makes it very convenient to navigate code and to show/hide parts of a file. Elips libraries typically have four top-level sections, e.g.: ;;; notmuch.el --- run notmuch within emacs... ;;; Commentary:... ;;; Code:... ;;; notmuch.el ends here In this package many libraries lack a "Commentary:" section, which is not optimal but okay for most libraries, except major entry points. Depending on how one chooses to look at it, the "... ends here" line is not really a heading that begins a section, because it should never have a "section" body (after all it marks eof). If the file is rather short, then I left "Code:" as the only section that contains code. Otherwise I split the file into multiple sibling sections. The "Code:" section continues to contain `require' and `declare-function' forms and other such "front matter". If and only if I have split the code into multiple sections anyway, then I also added an additional section named just "_" before the `provide' form and shortly before the "...end here" line. This section could also be called "Back matter", but I feel it would be distracting to be that explicit about it. (The IMO unnecessary but unfortunately still obligatory "... ends here" line is already distracting enough as far as I am concerned.) Before this commit some libraries already uses section headings, some of them consistently. When a library already had some headings, then this commit often sticks to that style, even at the cost inconsistent styling across all libraries. A very limited number of variable and function definitions have to be moved around because they would otherwise end up in sections they do not belong into. Sections, including but not limited to their heading, can and should be further improved in the future.
107 lines
3.8 KiB
EmacsLisp
107 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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(eval-when-compile (require 'cl-lib))
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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 (derived-mode-p 'message-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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