303 lines
11 KiB
EmacsLisp
303 lines
11 KiB
EmacsLisp
;;; org-wl.el --- Support for links to Wanderlust messages from within Org-mode
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;; Copyright (C) 2004-2018 Free Software Foundation, Inc.
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;; Author: Tokuya Kameshima <kames at fa2 dot so-net dot ne dot jp>
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;; David Maus <dmaus at ictsoc dot de>
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;; Keywords: outlines, hypermedia, calendar, wp
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;; Homepage: https://orgmode.org
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;;
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;; This file is not part of GNU Emacs.
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;;
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;; This program 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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;; This program 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 <http://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 Wanderlust messages from within Org-mode.
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;; Org-mode loads this module by default - if this is not what you want,
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;; configure the variable `org-modules'.
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;;; Code:
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(require 'org)
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(defgroup org-wl nil
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"Options concerning the Wanderlust link."
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:tag "Org Startup"
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:group 'org-link)
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(defcustom org-wl-link-to-refile-destination t
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"Create a link to the refile destination if the message is marked as refile."
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:group 'org-wl
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:type 'boolean)
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(defcustom org-wl-link-remove-filter nil
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"Remove filter condition if message is filter folder."
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:group 'org-wl
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:type 'boolean)
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(defcustom org-wl-shimbun-prefer-web-links nil
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"If non-nil create web links for shimbun messages."
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:group 'org-wl
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:type 'boolean)
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(defcustom org-wl-nntp-prefer-web-links nil
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"If non-nil create web links for nntp messages.
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When folder name contains string \"gmane\" link to gmane,
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googlegroups otherwise."
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:type 'boolean
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:group 'org-wl)
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(defcustom org-wl-disable-folder-check t
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"Disable check for new messages when open a link."
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:type 'boolean
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:group 'org-wl)
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(defcustom org-wl-namazu-default-index nil
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"Default namazu search index."
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:type '(choice (const nil) (directory))
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:group 'org-wl)
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;; Declare external functions and variables
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(declare-function elmo-folder-exists-p "ext:elmo" (folder) t)
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(declare-function elmo-message-entity-field "ext:elmo-msgdb"
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(entity field &optional type))
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(declare-function elmo-message-field "ext:elmo"
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(folder number field &optional type) t)
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(declare-function elmo-msgdb-overview-get-entity "ext:elmo" (id msgdb) t)
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;; Backward compatibility to old version of wl
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(declare-function wl "ext:wl" () t)
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(declare-function wl-summary-buffer-msgdb "ext:wl-folder" () t)
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(declare-function wl-summary-jump-to-msg-by-message-id "ext:wl-summary"
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(&optional id))
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(declare-function wl-summary-jump-to-msg "ext:wl-summary"
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(&optional number beg end))
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(declare-function wl-summary-line-from "ext:wl-summary" ())
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(declare-function wl-summary-line-subject "ext:wl-summary" ())
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(declare-function wl-summary-message-number "ext:wl-summary" ())
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(declare-function wl-summary-redisplay "ext:wl-summary" (&optional arg))
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(declare-function wl-summary-registered-temp-mark "ext:wl-action" (number))
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(declare-function wl-folder-goto-folder-subr "ext:wl-folder"
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(&optional folder sticky))
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(declare-function wl-folder-get-petname "ext:wl-folder" (name))
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(declare-function wl-folder-get-entity-from-buffer "ext:wl-folder"
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(&optional getid))
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(declare-function wl-folder-buffer-group-p "ext:wl-folder")
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(defvar wl-init)
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(defvar wl-summary-buffer-elmo-folder)
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(defvar wl-summary-buffer-folder-name)
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(defvar wl-folder-group-regexp)
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(defvar wl-auto-check-folder-name)
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(defvar elmo-nntp-default-server)
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(defconst org-wl-folder-types
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'(("%" . imap) ("-" . nntp) ("+" . mh) ("=" . spool)
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("$" . archive) ("&" . pop) ("@" . shimbun) ("[" . search)
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("*" . multi) ("/" . filter) ("|" . pipe) ("'" . internal))
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"List of folder indicators. See Wanderlust manual, section 3.")
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;; Install the link type
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(org-link-set-parameters "wl" :follow #'org-wl-open :store #'org-wl-store-link)
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;; Implementation
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(defun org-wl-folder-type (folder)
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"Return symbol that indicates the type of FOLDER.
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FOLDER is the wanderlust folder name. The first character of the
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folder name determines the folder type."
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(let* ((indicator (substring folder 0 1))
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(type (cdr (assoc indicator org-wl-folder-types))))
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;; maybe access or file folder
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(when (not type)
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(setq type
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(cond
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((and (>= (length folder) 5)
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(string= (substring folder 0 5) "file:"))
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'file)
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((and (>= (length folder) 7)
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(string= (substring folder 0 7) "access:"))
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'access)
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(t
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nil))))
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type))
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(defun org-wl-message-field (field entity)
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"Return content of FIELD in ENTITY.
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FIELD is a symbol of a rfc822 message header field.
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ENTITY is a message entity."
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(let ((content (elmo-message-entity-field entity field 'string)))
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(if (listp content) (car content) content)))
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(defun org-wl-store-link ()
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"Store a link to a WL message or folder."
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(unless (eobp)
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(cond
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((memq major-mode '(wl-summary-mode mime-view-mode))
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(org-wl-store-link-message))
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((eq major-mode 'wl-folder-mode)
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(org-wl-store-link-folder))
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(t
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nil))))
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(defun org-wl-store-link-folder ()
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"Store a link to a WL folder."
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(let* ((folder (wl-folder-get-entity-from-buffer))
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(petname (wl-folder-get-petname folder))
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(link (concat "wl:" folder)))
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(save-excursion
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(beginning-of-line)
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(unless (and (wl-folder-buffer-group-p)
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(looking-at wl-folder-group-regexp))
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(org-store-link-props :type "wl" :description petname
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:link link)
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link))))
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(defun org-wl-store-link-message ()
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"Store a link to a WL message."
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(save-excursion
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(let ((buf (if (eq major-mode 'wl-summary-mode)
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(current-buffer)
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(and (boundp 'wl-message-buffer-cur-summary-buffer)
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wl-message-buffer-cur-summary-buffer))))
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(when buf
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(with-current-buffer buf
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(let* ((msgnum (wl-summary-message-number))
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(mark-info (wl-summary-registered-temp-mark msgnum))
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(folder-name
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(if (and org-wl-link-to-refile-destination
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mark-info
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(equal (nth 1 mark-info) "o")) ; marked as refile
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(nth 2 mark-info)
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wl-summary-buffer-folder-name))
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(folder-type (org-wl-folder-type folder-name))
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(wl-message-entity
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(if (fboundp 'elmo-message-entity)
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(elmo-message-entity
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wl-summary-buffer-elmo-folder msgnum)
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(elmo-msgdb-overview-get-entity
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msgnum (wl-summary-buffer-msgdb))))
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(message-id
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(org-wl-message-field 'message-id wl-message-entity))
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(message-id-no-brackets
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(org-unbracket-string "<" ">" message-id))
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(from (org-wl-message-field 'from wl-message-entity))
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(to (org-wl-message-field 'to wl-message-entity))
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(xref (org-wl-message-field 'xref wl-message-entity))
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(subject (org-wl-message-field 'subject wl-message-entity))
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(date (org-wl-message-field 'date wl-message-entity))
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desc link)
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;; remove text properties of subject string to avoid possible bug
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;; when formatting the subject
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;; (Emacs bug #5306, fixed)
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(set-text-properties 0 (length subject) nil subject)
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;; maybe remove filter condition
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(when (and (eq folder-type 'filter) org-wl-link-remove-filter)
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(while (eq (org-wl-folder-type folder-name) 'filter)
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(setq folder-name
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(replace-regexp-in-string "^/[^/]+/" "" folder-name))))
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;; maybe create http link
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(cond
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((and (eq folder-type 'shimbun)
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org-wl-shimbun-prefer-web-links xref)
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(org-store-link-props :type "http" :link xref :description subject
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:from from :to to :message-id message-id
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:message-id-no-brackets message-id-no-brackets
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:subject subject))
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((and (eq folder-type 'nntp) org-wl-nntp-prefer-web-links)
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(setq link
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(format
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(if (string-match "gmane\\." folder-name)
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"http://mid.gmane.org/%s"
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"http://groups.google.com/groups/search?as_umsgid=%s")
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(org-fixup-message-id-for-http message-id)))
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(org-store-link-props :type "http" :link link :description subject
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:from from :to to :message-id message-id
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:message-id-no-brackets message-id-no-brackets
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:subject subject))
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(t
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(org-store-link-props :type "wl" :from from :to to
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:subject subject :message-id message-id
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:message-id-no-brackets message-id-no-brackets)
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(setq desc (org-email-link-description))
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(setq link (concat "wl:" folder-name "#" message-id-no-brackets))
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(org-add-link-props :link link :description desc)))
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(org-add-link-props :date date)
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(or link xref)))))))
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(defun org-wl-open-nntp (path)
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"Follow the nntp: link specified by PATH."
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(let* ((spec (split-string path "/"))
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(server (split-string (nth 2 spec) "@"))
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(group (nth 3 spec))
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(article (nth 4 spec)))
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(org-wl-open
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(concat "-" group ":" (if (cdr server)
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(car (split-string (car server) ":"))
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"")
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(if (string= elmo-nntp-default-server (nth 2 spec))
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""
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(concat "@" (or (cdr server) (car server))))
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(if article (concat "#" article) "")))))
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(defun org-wl-open (path)
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"Follow the WL message link specified by PATH.
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When called with one prefix, open message in namazu search folder
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with `org-wl-namazu-default-index' as search index. When called
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with two prefixes or `org-wl-namazu-default-index' is nil, ask
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for namazu index."
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(require 'wl)
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(let ((wl-auto-check-folder-name
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(if org-wl-disable-folder-check
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'none
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wl-auto-check-folder-name)))
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(unless wl-init (wl))
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;; XXX: The imap-uw's MH folder names start with "%#".
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(if (not (string-match "\\`\\(\\(?:%#\\)?[^#]+\\)\\(#\\(.*\\)\\)?" path))
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(error "Error in Wanderlust link"))
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(let ((folder (match-string 1 path))
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(article (match-string 3 path)))
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;; maybe open message in namazu search folder
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(when current-prefix-arg
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(setq folder (concat "[" article "]"
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(if (and (equal current-prefix-arg '(4))
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org-wl-namazu-default-index)
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org-wl-namazu-default-index
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(read-directory-name "Namazu index: ")))))
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(if (not (elmo-folder-exists-p (with-no-warnings
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(wl-folder-get-elmo-folder folder))))
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(error "No such folder: %s" folder))
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(let ((old-buf (current-buffer))
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(old-point (point-marker)))
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(wl-folder-goto-folder-subr folder)
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(with-current-buffer old-buf
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;; XXX: `wl-folder-goto-folder-subr' moves point to the
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;; beginning of the current line. So, restore the point
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;; in the old buffer.
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(goto-char old-point))
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(when article
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(if (string-match-p "@" article)
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(wl-summary-jump-to-msg-by-message-id (org-add-angle-brackets
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article))
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(or (wl-summary-jump-to-msg (string-to-number article))
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(error "No such message: %s" article)))
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(wl-summary-redisplay))))))
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(provide 'org-wl)
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;;; org-wl.el ends here
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