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;;; org-link-minor-mode.el --- Enable org-mode links in non-org modes -*- lexical-binding: t; -*-
;;
;; Copyright (C) 2012-2020
;;
;; Author: Sean O'Halpin <sean.ohalpin@gmail.com>
;; Maintainer: Sean O'Halpin <sean.ohalpin@gmail.com>
;; Created: 20120825
;; Modified: 20200129
;; Version: 0.0.3
;; Package-Requires: ((emacs "24.3"))
;; Package-Version: 20200129.0141
;; Keywords: hypermedia
;; Url: https://github.com/seanohalpin/org-link-minor-mode
;;
;; Changes for org v9: Stefan-W. Hahn <stefan dot hahn at s-hahn dot de>
;;
;; This file 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, or (at your option)
;; any later version.
;;
;; This file 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:
;;
;; Enables org-mode links of the form:
;;
;; http://www.bbc.co.uk
;; man:emacs
;; info:emacs
;; <http://www.bbc.co.uk>
;; [[http://www.bbc.co.uk][BBC]]
;; [[org-link-minor-mode]]
;; [2012-08-18]
;; <2012-08-18>
;;
;; Note that `org-toggle-link-display' will also work when this mode
;; is enabled.
;;
;;; Code:
(require 'org-element)
;; Following declarations are necessary to make the byte compiler happy.
;; For org v8 compatibility (if used with org v9)
(declare-function org-activate-plain-links "org" (limit))
(declare-function org-activate-angle-links "org" (limit))
(declare-function org-activate-bracket-links "org" (limit))
(declare-function org-decompose-region "org-compat" (beg end))
;; For org v9 compatibility (if used with org v8)
(declare-function org-activate-links "org" (limit))
(declare-function org-activate-dates "org" (limit))
(defun org-link-minor-mode--unfontify-region (beg end)
"Remove org-link fontification between BEG and END."
(font-lock-default-unfontify-region beg end)
(let* ((buffer-undo-list t)
(inhibit-read-only t) (inhibit-point-motion-hooks t)
(inhibit-modification-hooks t)
deactivate-mark buffer-file-name buffer-file-truename)
(if (fboundp 'org-decompose-region)
(org-decompose-region beg end)
(decompose-region beg end))
(remove-text-properties beg end
'(mouse-face t keymap t org-linked-text t
invisible t intangible t
help-echo t rear-nonsticky t
htmlize-link t
org-no-flyspell t org-emphasis t))
(org-remove-font-lock-display-properties beg end)))
(defvar org-link-minor-mode-map (make-sparse-keymap)
"Local keymap.")
(make-variable-buffer-local 'org-link-minor-mode-map)
;;;###autoload
(define-minor-mode org-link-minor-mode
"Toggle display of org-mode style links in non-org-mode buffers."
:lighter " org-link"
:keymap org-link-minor-mode-map
(let ((lk org-highlight-links)
org-link-minor-mode-keywords)
(if (fboundp 'org-activate-links)
;; from Org v9.2
(setq org-link-minor-mode-keywords
(list
'(org-activate-links)
(when (memq 'tag lk) '(org-activate-tags (1 'org-tag prepend)))
(when (memq 'radio lk) '(org-activate-target-links (1 'org-link t)))
(when (memq 'date lk) '(org-activate-dates (0 'org-date t)))
(when (memq 'footnote lk) '(org-activate-footnote-links))))
(setq org-link-minor-mode-keywords
(list
(when (memq 'tag lk) '(org-activate-tags (1 'org-tag prepend)))
(when (memq 'angle lk) '(org-activate-angle-links (0 'org-link t)))
(when (memq 'plain lk) '(org-activate-plain-links (0 'org-link t)))
(when (memq 'bracket lk) '(org-activate-bracket-links (0 'org-link t)))
(when (memq 'radio lk) '(org-activate-target-links (0 'org-link t)))
(when (memq 'date lk) '(org-activate-dates (0 'org-date t)))
(when (memq 'footnote lk) '(org-activate-footnote-links)))))
(if org-link-minor-mode
(if (derived-mode-p 'org-mode)
(progn
(message "org-mode doesn't need org-link-minor-mode")
(org-link-minor-mode -1))
(font-lock-add-keywords nil org-link-minor-mode-keywords t)
(kill-local-variable 'org-mouse-map)
(setq-local org-mouse-map
(let ((map (make-sparse-keymap)))
(define-key map [return] 'org-open-at-point)
(define-key map [tab] 'org-next-link)
(define-key map [backtab] 'org-previous-link)
(define-key map [mouse-2] 'org-open-at-point)
(define-key map [follow-link] 'mouse-face)
map))
(setq-local font-lock-unfontify-region-function
'org-link-minor-mode--unfontify-region)
(setq-local org-descriptive-links nil)
(org-toggle-link-display))
(unless (derived-mode-p 'org-mode)
(font-lock-remove-keywords nil org-link-minor-mode-keywords)
(setq org-descriptive-links t)
(org-toggle-link-display)
(kill-local-variable 'org-descriptive-links)
(kill-local-variable 'org-mouse-map)
(kill-local-variable 'font-lock-unfontify-region-function)))))
(provide 'org-link-minor-mode)
;;; org-link-minor-mode.el ends here
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