Variable: repeat-too-dangerous

repeat-too-dangerous is a customizable variable defined in repeat.el.gz.

Value

(kill-this-buffer)

Documentation

Commands too dangerous to repeat with C-x z (repeat).

Source Code

;; Defined in /usr/src/emacs/lisp/repeat.el.gz
;;; repeat.el --- convenient way to repeat the previous command  -*- lexical-binding: t -*-

;; Copyright (C) 1998, 2001-2022 Free Software Foundation, Inc.

;; Author: Will Mengarini <seldon@eskimo.com>
;; Created: Mo 02 Mar 98
;; Old-Version: 0.51
;; Keywords: convenience, vi, repeat

;; 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:

;; Sometimes the fastest way to get something done is just to lean on a key;
;; moving forward through a series of words by leaning on M-f is an example.
;; But 'forward-page is orthodoxly bound to C-x ], so moving forward through
;; several pages requires
;;   Loop until desired page is reached:
;;     Hold down control key with left pinkie.
;;     Tap <x>.
;;     Lift left pinkie off control key.
;;     Tap <]>.
;; This is a pain in the ass.

;; This package defines a command that repeats the preceding command,
;; whatever that was, including its arguments, whatever they were.
;; This command is connected to the key C-x z.
;; To repeat the previous command once, type C-x z.
;; To repeat it a second time immediately after, type just z.
;; By typing z again and again, you can repeat the command over and over.

;; This works correctly inside a keyboard macro as far as recording and
;; playback go, but `edit-kbd-macro' gets it wrong.  That shouldn't really
;; matter; if you need to edit something like
;;   C-x ]              ;; forward-page
;;   C-x z              ;; repeat
;;   zz                 ;; self-insert-command * 2
;;   C-x                ;; Control-X-prefix
;; you can just kill the bogus final 2 lines, then duplicate the repeat line
;; as many times as it's really needed.  Also, `edit-kbd-macro' works
;; correctly if `repeat' is invoked through a rebinding to a single keystroke
;; and the global variable repeat-on-final-keystroke is set to a value
;; that doesn't include that keystroke.  For example, the lines
;;   (global-set-key "\C-z" 'repeat)
;;   (setq repeat-on-final-keystroke "z")
;; in your .emacs would allow `edit-kbd-macro' to work correctly when C-z was
;; used in a keyboard macro to invoke `repeat', but would still allow C-x z
;; to be used for `repeat' elsewhere.  The real reason for documenting this
;; isn't that anybody would need it for the `edit-kbd-macro' problem, but
;; that there might be other unexpected ramifications of re-executing on
;; repetitions of the final keystroke, and this shows how to do workarounds.

;; If the preceding command had a prefix argument, that argument is applied
;; to the repeat command, unless the repeat command is given a new prefix
;; argument, in which case it applies that new prefix argument to the
;; preceding command.  This means a key sequence like C-u - C-x C-t can be
;; repeated.  (It shoves the preceding line upward in the buffer.)

;; Here are some other key sequences with which repeat might be useful:
;;   C-u - C-t      [shove preceding character backward in line]
;;   C-u - M-t      [shove preceding word backward in sentence]
;;         C-x ^    enlarge-window [one line] (assuming frame has > 1 window)
;;   C-u - C-x ^    [shrink window one line]
;;         C-x `    next-error
;;   C-u - C-x `    [previous error]
;;         C-x DEL  backward-kill-sentence
;;         C-x e    call-last-kbd-macro
;;         C-x r i  insert-register
;;         C-x r t  string-rectangle
;;         C-x TAB  indent-rigidly [one character]
;;   C-u - C-x TAB  [outdent rigidly one character]
;;         C-x {    shrink-window-horizontally
;;         C-x }    enlarge-window-horizontally

;;; Code:

;;;;; ************************* USER OPTIONS ************************** ;;;;;

(defcustom repeat-too-dangerous '(kill-this-buffer)
  "Commands too dangerous to repeat with \\[repeat]."
  :group 'convenience
  :type '(repeat function))