home *** CD-ROM | disk | FTP | other *** search
- ;; Handling of disabled commands ("novice mode") for Emacs.
- ;; Copyright (C) 1985 Richard M. Stallman.
-
- ;; This file is part of GNU Emacs.
-
- ;; GNU Emacs is distributed in the hope that it will be useful,
- ;; but WITHOUT ANY WARRANTY. No author or distributor
- ;; accepts responsibility to anyone for the consequences of using it
- ;; or for whether it serves any particular purpose or works at all,
- ;; unless he says so in writing. Refer to the GNU Emacs General Public
- ;; License for full details.
-
- ;; Everyone is granted permission to copy, modify and redistribute
- ;; GNU Emacs, but only under the conditions described in the
- ;; GNU Emacs General Public License. A copy of this license is
- ;; supposed to have been given to you along with GNU Emacs so you
- ;; can know your rights and responsibilities. It should be in a
- ;; file named COPYING. Among other things, the copyright notice
- ;; and this notice must be preserved on all copies.
-
-
- ;; This function is called (autoloaded)
- ;; to handle any disabled command.
- ;; The command is found in this-command
- ;; and the keys are returned by (this-command-keys).
-
- (defun disabled-command-hook (&rest ignore)
- (let (char)
- (save-window-excursion
- (with-output-to-temp-buffer "*Help*"
- (princ "You have typed ")
- (princ (key-description (this-command-keys)))
- (princ ", invoking disabled command ")
- (princ this-command)
- (princ ":\n")
- (princ (or (documentation this-command) "<< not documented >>"))
- (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: ")
- (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))))
-
- (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 "~/emacs.rc")))
- (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"))
- (setq foo (buffer-modified-p))
- (save-buffer)))
-
- (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: ")
- (put command 'disabled t)
- (save-excursion
- (set-buffer (find-file-noselect (substitute-in-file-name "~/emacs.rc")))
- (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)))
-
-