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121 lines
4.2 KiB
EmacsLisp
121 lines
4.2 KiB
EmacsLisp
;;; ol-rmail.el --- Links to Rmail Messages -*- lexical-binding: t; -*-
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;; Copyright (C) 2004-2024 Free Software Foundation, Inc.
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;; Author: Carsten Dominik <carsten.dominik@gmail.com>
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;; Keywords: outlines, hypermedia, calendar, text
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;; URL: https://orgmode.org
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;;
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;; This file is part of GNU Emacs.
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;;
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;; GNU Emacs is free software: you can redistribute it and/or modify
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;; it 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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;; GNU Emacs is distributed in the hope that it will be useful,
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;; but WITHOUT ANY WARRANTY; without even the implied warranty of
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;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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;; GNU General Public License for more details.
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;; You should have received a copy of the GNU General Public License
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;; along with GNU Emacs. If not, see <https://www.gnu.org/licenses/>.
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;;
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;;; Commentary:
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;; This file implements links to Rmail messages from within Org mode.
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;; Org mode loads this module by default - if this is not what you
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;; want, configure the variable `org-modules'.
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;;; Code:
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(require 'org-macs)
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(org-assert-version)
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(require 'ol)
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;; Declare external functions and variables
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(declare-function rmail-show-message "rmail" (&optional n no-summary))
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(declare-function rmail-what-message "rmail" (&optional pos))
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(declare-function rmail-toggle-header "rmail" (&optional arg))
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(declare-function rmail "rmail" (&optional file-name-arg))
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(declare-function rmail-widen "rmail" ())
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(defvar rmail-current-message) ; From rmail.el
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(defvar rmail-header-style) ; From rmail.el
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(defvar rmail-file-name) ; From rmail.el
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;; Install the link type
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(org-link-set-parameters "rmail"
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:follow #'org-rmail-open
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:store #'org-rmail-store-link)
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;; Implementation
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(defun org-rmail-store-link (&optional _interactive?)
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"Store a link to an Rmail folder or message."
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(when (or (eq major-mode 'rmail-mode)
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(eq major-mode 'rmail-summary-mode))
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(save-window-excursion
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(save-restriction
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(when (eq major-mode 'rmail-summary-mode)
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(rmail-show-message rmail-current-message))
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(when (fboundp 'rmail-narrow-to-non-pruned-header)
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(rmail-narrow-to-non-pruned-header))
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(when (eq rmail-header-style 'normal)
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(rmail-toggle-header -1))
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(let* ((folder buffer-file-name)
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(message-id (mail-fetch-field "message-id"))
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(from (mail-fetch-field "from"))
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(to (mail-fetch-field "to"))
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(subject (mail-fetch-field "subject"))
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(date (mail-fetch-field "date"))
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desc link)
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(org-link-store-props
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:type "rmail" :from from :to to :date date
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:subject subject :message-id message-id)
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(setq message-id (org-unbracket-string "<" ">" message-id))
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(setq desc (org-link-email-description))
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(setq link (concat "rmail:" folder "#" message-id))
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(org-link-add-props :link link :description desc)
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(rmail-show-message rmail-current-message)
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link)))))
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(defun org-rmail-open (path _)
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"Follow an Rmail message link to the specified PATH."
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(let (folder article)
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(if (not (string-match "\\`\\([^#]+\\)\\(#\\(.*\\)\\)?" path))
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(error "Error in Rmail link"))
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(setq folder (match-string 1 path)
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article (match-string 3 path))
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(org-rmail-follow-link folder article)))
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(defun org-rmail-follow-link (folder article)
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"Follow an Rmail link to FOLDER and ARTICLE."
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(require 'rmail)
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(cond ((null article) (setq article ""))
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((stringp article)
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(setq article (org-link-add-angle-brackets article)))
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(t (user-error "Wrong RMAIL link format")))
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(let (message-number)
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(save-excursion
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(save-window-excursion
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(rmail (if (string= folder "RMAIL") rmail-file-name folder))
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(setq message-number
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(save-restriction
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(rmail-widen)
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(goto-char (point-max))
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(if (re-search-backward
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(concat "^Message-ID:\\s-+" (regexp-quote article))
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nil t)
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(rmail-what-message))))))
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(if message-number
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(progn
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(rmail (if (string= folder "RMAIL") rmail-file-name folder))
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(rmail-show-message message-number)
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message-number)
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(error "Message not found"))))
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(provide 'ol-rmail)
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;;; ol-rmail.el ends here
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