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Diffstat (limited to 'lisp/novice.el')
| -rw-r--r-- | lisp/novice.el | 129 |
1 files changed, 0 insertions, 129 deletions
diff --git a/lisp/novice.el b/lisp/novice.el deleted file mode 100644 index 2c61715cefd..00000000000 --- a/lisp/novice.el +++ /dev/null @@ -1,129 +0,0 @@ -;;; novice.el --- handling of disabled commands ("novice mode") for Emacs. - -;; Copyright (C) 1985, 1986, 1987 Free Software Foundation, Inc. - -;; Maintainer: FSF -;; Keywords: internal, help - -;; 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 2, 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; see the file COPYING. If not, write to -;; the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. - -;;; Commentary: - -;; This mode provides a hook which is, by default, attached to various -;; putatively dangerous commands in a (probably futile) attempt to -;; prevent lusers from shooting themselves in the feet. - -;;; Code: - -;; This function is called (by autoloading) -;; to handle any disabled command. -;; The command is found in this-command -;; and the keys are returned by (this-command-keys). - -;;;###autoload -(setq disabled-command-hook 'disabled-command-hook) - -;;;###autoload -(defun disabled-command-hook (&rest ignore) - (let (char) - (save-window-excursion - (with-output-to-temp-buffer "*Help*" - (if (eq (aref (this-command-keys) 0) - (if (stringp (this-command-keys)) - (aref "\M-x" 0) - ?\M-x)) - (princ "You have invoked the disabled command ") - (princ "You have typed ") - (princ (key-description (this-command-keys))) - (princ ", invoking disabled command ")) - (princ this-command) - (princ ":\n") - ;; Print any special message saying why the command is disabled. - (if (stringp (get this-command 'disabled)) - (princ (get this-command 'disabled))) - (princ (or (condition-case () - (documentation this-command) - (error nil)) - "<< not documented >>")) - ;; Keep only the first paragraph of the documentation. - (save-excursion - (set-buffer "*Help*") - (goto-char (point-min)) - (if (search-forward "\n\n" nil t) - (delete-region (1- (point)) (point-max)) - (goto-char (point-max)))) - (princ "\n\n") - (princ "You can now type -Space to try the command just this once, - but leave it disabled, -Y to try it and enable it (no questions if you use it again), -N to do nothing (command remains disabled).")) - (message "Type y, n or Space: ") - (let ((cursor-in-echo-area t)) - (while (not (memq (setq char (downcase (read-char))) - '(? ?y ?n))) - (ding) - (message "Please type y, n or Space: ")))) - (if (= char ?y) - (if (y-or-n-p "Enable command for future editing sessions also? ") - (enable-command this-command) - (put this-command 'disabled nil))) - (if (/= char ?n) - (call-interactively this-command)))) - -;;;###autoload -(defun enable-command (command) - "Allow COMMAND to be executed without special confirmation from now on. -The user's .emacs file is altered so that this will apply -to future sessions." - (interactive "CEnable command: ") - (put command 'disabled nil) - (save-excursion - (set-buffer (find-file-noselect - (substitute-in-file-name user-init-file))) - (goto-char (point-min)) - (if (search-forward (concat "(put '" (symbol-name command) " ") nil t) - (delete-region - (progn (beginning-of-line) (point)) - (progn (forward-line 1) (point))) - ;; Must have been disabled by default. - (goto-char (point-max)) - (insert "\n(put '" (symbol-name command) " 'disabled nil)\n")) - (save-buffer))) - -;;;###autoload -(defun disable-command (command) - "Require special confirmation to execute COMMAND from now on. -The user's .emacs file is altered so that this will apply -to future sessions." - (interactive "CDisable command: ") - (if (not (commandp command)) - (error "Invalid command name `%s'" command)) - (put command 'disabled t) - (save-excursion - (set-buffer (find-file-noselect - (substitute-in-file-name user-init-file))) - (goto-char (point-min)) - (if (search-forward (concat "(put '" (symbol-name command) " ") nil t) - (delete-region - (progn (beginning-of-line) (point)) - (progn (forward-line 1) (point)))) - (goto-char (point-max)) - (insert "(put '" (symbol-name command) " 'disabled t)\n") - (save-buffer))) - -;;; novice.el ends here |