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;;; score-mode.el --- mode for editing Gnus score files -*- lexical-binding: t; -*-
;; Copyright (C) 1996, 2001-2021 Free Software Foundation, Inc.
;; Author: Lars Magne Ingebrigtsen <larsi@gnus.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:
;;; Code:
(require 'mm-util) ; for mm-universal-coding-system
(require 'gnus-util) ; for gnus-pp, gnus-run-mode-hooks
(defcustom gnus-score-edit-done-hook nil
"Hook run at the end of closing the score buffer."
:group 'gnus-score
:type 'hook)
(defcustom gnus-score-mode-hook nil
"Hook run in score mode buffers."
:group 'gnus-score
:type 'hook)
(defcustom gnus-score-menu-hook nil
"Hook run after creating the score mode menu."
:group 'gnus-score
:type 'hook)
(defvar gnus-score-edit-exit-function nil
"Function run on exit from the score buffer.")
(defvar gnus-score-mode-map
(let ((map (make-sparse-keymap)))
(set-keymap-parent map emacs-lisp-mode-map)
(define-key map "\C-c\C-c" 'gnus-score-edit-exit)
(define-key map "\C-c\C-d" 'gnus-score-edit-insert-date)
(define-key map "\C-c\C-p" 'gnus-score-pretty-print)
map))
(defvar score-mode-syntax-table
(let ((table (copy-syntax-table lisp-mode-syntax-table)))
(modify-syntax-entry ?| "w" table)
table)
"Syntax table used in score-mode buffers.")
;; We need this to cope with non-ASCII scoring.
(defvar score-mode-coding-system mm-universal-coding-system)
;;;###autoload
(define-derived-mode gnus-score-mode emacs-lisp-mode "Score"
"Mode for editing Gnus score files.
This mode is an extended emacs-lisp mode.
\\{gnus-score-mode-map}"
(gnus-score-make-menu-bar)
(make-local-variable 'gnus-score-edit-exit-function))
(defun gnus-score-make-menu-bar ()
(unless (boundp 'gnus-score-menu)
(easy-menu-define
gnus-score-menu gnus-score-mode-map ""
'("Score"
["Exit" gnus-score-edit-exit t]
["Insert date" gnus-score-edit-insert-date t]
["Format" gnus-score-pretty-print t]))
(run-hooks 'gnus-score-menu-hook)))
(defun gnus-score-edit-insert-date ()
"Insert date in numerical format."
(interactive nil gnus-score-mode)
(princ (time-to-days nil) (current-buffer)))
(defun gnus-score-pretty-print ()
"Format the current score file."
(interactive nil gnus-score-mode)
(goto-char (point-min))
(let ((form (read (current-buffer))))
(erase-buffer)
(let ((emacs-lisp-mode-syntax-table score-mode-syntax-table))
(gnus-pp form)))
(goto-char (point-min)))
(defun gnus-score-edit-exit ()
"Stop editing the score file."
(interactive nil gnus-score-mode)
(unless (file-exists-p (file-name-directory (buffer-file-name)))
(make-directory (file-name-directory (buffer-file-name)) t))
(let ((coding-system-for-write score-mode-coding-system))
(save-buffer))
(bury-buffer (current-buffer))
(let ((buf (current-buffer)))
(when gnus-score-edit-exit-function
(funcall gnus-score-edit-exit-function))
(when (eq buf (current-buffer))
(switch-to-buffer (other-buffer (current-buffer))))))
(provide 'score-mode)
;;; score-mode.el ends here
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