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Diffstat (limited to 'lisp/obsolete/options.el')
| -rw-r--r-- | lisp/obsolete/options.el | 140 |
1 files changed, 0 insertions, 140 deletions
diff --git a/lisp/obsolete/options.el b/lisp/obsolete/options.el deleted file mode 100644 index eb3fb2aa4f3..00000000000 --- a/lisp/obsolete/options.el +++ /dev/null @@ -1,140 +0,0 @@ -;;; options.el --- edit Options command for Emacs - -;; Copyright (C) 1985, 2001-2019 Free Software Foundation, Inc. - -;; Maintainer: emacs-devel@gnu.org -;; Obsolete-since: 22.1 - -;; 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 code provides functions to list and edit the values of all global -;; option variables known to loaded Emacs Lisp code. There are two entry -;; points, `list-options' and `edit' options'. The latter enters a major -;; mode specifically for editing option values. Do `M-x describe-mode' in -;; that context for more details. - -;; The customization buffer feature is intended to make this obsolete. - -;;; Code: - -;;;###autoload -(defun list-options () - "Display a list of Emacs user options, with values and documentation. -It is now better to use Customize instead." - (interactive) - (with-output-to-temp-buffer "*List Options*" - (let (vars) - (princ "This facility is obsolete; we recommend using M-x customize instead.") - - (mapatoms (function (lambda (sym) - (if (custom-variable-p sym) - (setq vars (cons sym vars)))))) - (setq vars (sort vars 'string-lessp)) - (while vars - (let ((sym (car vars))) - (when (boundp sym) - (princ ";; ") - (prin1 sym) - (princ ":\n\t") - (prin1 (symbol-value sym)) - (terpri) - (princ (substitute-command-keys - (documentation-property sym 'variable-documentation))) - (princ "\n;;\n")) - (setq vars (cdr vars)))) - (with-current-buffer "*List Options*" - (Edit-options-mode) - (setq buffer-read-only t))))) - -;;;###autoload -(defun edit-options () - "Edit a list of Emacs user option values. -Selects a buffer containing such a list, -in which there are commands to set the option values. -Type \\[describe-mode] in that buffer for a list of commands. - -The Custom feature is intended to make this obsolete." - (interactive) - (list-options) - (pop-to-buffer "*List Options*")) - -(defvar Edit-options-mode-map - (let ((map (make-keymap))) - (define-key map "s" 'Edit-options-set) - (define-key map "x" 'Edit-options-toggle) - (define-key map "1" 'Edit-options-t) - (define-key map "0" 'Edit-options-nil) - (define-key map "p" 'backward-paragraph) - (define-key map " " 'forward-paragraph) - (define-key map "n" 'forward-paragraph) - map) - "") - -;; Edit Options mode is suitable only for specially formatted data. -(put 'Edit-options-mode 'mode-class 'special) - -(define-derived-mode Edit-options-mode emacs-lisp-mode "Options" - "\\<Edit-options-mode-map>\ -Major mode for editing Emacs user option settings. -Special commands are: -\\[Edit-options-set] -- set variable point points at. New value read using minibuffer. -\\[Edit-options-toggle] -- toggle variable, t -> nil, nil -> t. -\\[Edit-options-t] -- set variable to t. -\\[Edit-options-nil] -- set variable to nil. -Changed values made by these commands take effect immediately. - -Each variable description is a paragraph. -For convenience, the characters \\[backward-paragraph] and \\[forward-paragraph] move back and forward by paragraphs." - (setq-local paragraph-separate "[^\^@-\^?]") - (setq-local paragraph-start "\t") - (setq-local truncate-lines t)) - -(defun Edit-options-set () (interactive) - (Edit-options-modify - (lambda (var) (eval-minibuffer (concat "New " (symbol-name var) ": "))))) - -(defun Edit-options-toggle () (interactive) - (Edit-options-modify (lambda (var) (not (symbol-value var))))) - -(defun Edit-options-t () (interactive) - (Edit-options-modify (lambda (var) t))) - -(defun Edit-options-nil () (interactive) - (Edit-options-modify (lambda (var) nil))) - -(defun Edit-options-modify (modfun) - (save-excursion - (let ((buffer-read-only nil) var pos) - (re-search-backward "^;; \\|\\`") - (forward-char 3) - (setq pos (point)) - (save-restriction - (narrow-to-region pos (progn (end-of-line) (1- (point)))) - (goto-char pos) - (setq var (read (current-buffer)))) - (goto-char pos) - (forward-line 1) - (forward-char 1) - (save-excursion - (set var (funcall modfun var))) - (kill-sexp 1) - (prin1 (symbol-value var) (current-buffer))))) - -(provide 'options) - -;;; options.el ends here |