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;;; nnregistry.el --- access to articles via Gnus' message-id registry -*- lexical-binding: t; -*-
;; Copyright (C) 2010-2021 Free Software Foundation, Inc.
;; Author: Ludovic Courtès <ludo@gnu.org>
;; Keywords: news, mail
;; This file is part of GNU Emacs.
;; GNU Emacs 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 of the License, or
;; (at your option) any later version.
;; GNU Emacs 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 GNU Emacs. If not, see <https://www.gnu.org/licenses/>.
;;; Commentary:
;; This file provides the `nnregistry' Gnus back-end. It can be used
;; in `gnus-refer-article-method' to quickly search for a message by
;; id, regardless of the back-end that stores it. See the Gnus manual
;; for usage examples and more information.
;;; Code:
(require 'nnoo)
(require 'gnus-registry)
(require 'gnus-int)
(nnoo-declare nnregistry)
(deffoo nnregistry-server-opened (_server)
gnus-registry-enabled)
(deffoo nnregistry-close-server (_server &optional _defs)
t)
(deffoo nnregistry-status-message (_server)
nil)
(deffoo nnregistry-open-server (_server &optional _defs)
gnus-registry-enabled)
(defvar nnregistry-within-nnregistry nil)
(deffoo nnregistry-request-article (id &optional _group _server buffer)
(and (not nnregistry-within-nnregistry)
(let* ((nnregistry-within-nnregistry t)
(group (nth 0 (gnus-registry-get-id-key id 'group)))
(gnus-override-method nil))
(message "nnregistry: requesting article `%s' in group `%s'"
id group)
(and group
(gnus-check-group group)
(gnus-request-article id group buffer)))))
(provide 'nnregistry)
;;; nnregistry.el ends here
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