1;;; echistory.el --- Electric Command History Mode 2 3;; Copyright (C) 1985, 2001, 2002, 2003, 2004, 2005, 4;; 2006, 2007 Free Software Foundation, Inc. 5 6;; Author: K. Shane Hartman 7;; Maintainer: FSF 8 9;; This file is part of GNU Emacs. 10 11;; GNU Emacs is free software; you can redistribute it and/or modify 12;; it under the terms of the GNU General Public License as published by 13;; the Free Software Foundation; either version 2, or (at your option) 14;; any later version. 15 16;; GNU Emacs is distributed in the hope that it will be useful, 17;; but WITHOUT ANY WARRANTY; without even the implied warranty of 18;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 19;; GNU General Public License for more details. 20 21;; You should have received a copy of the GNU General Public License 22;; along with GNU Emacs; see the file COPYING. If not, write to the 23;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, 24;; Boston, MA 02110-1301, USA. 25 26;;; Commentary: 27 28;;; Code: 29 30(require 'electric) ; command loop 31(require 'chistory) ; history lister 32 33;;;###autoload 34(defun Electric-command-history-redo-expression (&optional noconfirm) 35 "Edit current history line in minibuffer and execute result. 36With prefix arg NOCONFIRM, execute current line as-is without editing." 37 (interactive "P") 38 (let (todo) 39 (save-excursion 40 (set-buffer "*Command History*") 41 (beginning-of-line) 42 (setq todo (read (current-buffer))) 43 (if (boundp 'electric-history-in-progress) 44 (if todo (throw 'electric-history-quit (list noconfirm todo))))))) 45 46(defvar electric-history-map ()) 47(if electric-history-map 48 () 49 (setq electric-history-map (make-sparse-keymap)) 50 (define-key electric-history-map [t] 'Electric-history-undefined) 51 (define-key electric-history-map "\e" (make-sparse-keymap)) 52 (define-key electric-history-map [?\e t] 'Electric-history-undefined) 53 (define-key electric-history-map "\C-u" 'universal-argument) 54 (define-key electric-history-map " " 'Electric-command-history-redo-expression) 55 (define-key electric-history-map "!" 'Electric-command-history-redo-expression) 56 (define-key electric-history-map "\e\C-x" 'eval-sexp) 57 (define-key electric-history-map "\e\C-d" 'down-list) 58 (define-key electric-history-map "\e\C-u" 'backward-up-list) 59 (define-key electric-history-map "\e\C-b" 'backward-sexp) 60 (define-key electric-history-map "\e\C-f" 'forward-sexp) 61 (define-key electric-history-map "\e\C-a" 'beginning-of-defun) 62 (define-key electric-history-map "\e\C-e" 'end-of-defun) 63 (define-key electric-history-map "\e\C-n" 'forward-list) 64 (define-key electric-history-map "\e\C-p" 'backward-list) 65 (define-key electric-history-map "q" 'Electric-history-quit) 66 (define-key electric-history-map "\C-c" nil) 67 (define-key electric-history-map "\C-c\C-c" 'Electric-history-quit) 68 (define-key electric-history-map "\C-]" 'Electric-history-quit) 69 (define-key electric-history-map "\C-z" 'suspend-emacs) 70 (define-key electric-history-map (char-to-string help-char) 'Helper-help) 71 (define-key electric-history-map "?" 'Helper-describe-bindings) 72 (define-key electric-history-map "\e>" 'end-of-buffer) 73 (define-key electric-history-map "\e<" 'beginning-of-buffer) 74 (define-key electric-history-map "\n" 'next-line) 75 (define-key electric-history-map "\r" 'next-line) 76 (define-key electric-history-map "\177" 'previous-line) 77 (define-key electric-history-map "\C-n" 'next-line) 78 (define-key electric-history-map "\C-p" 'previous-line) 79 (define-key electric-history-map "\ev" 'scroll-down) 80 (define-key electric-history-map "\C-v" 'scroll-up) 81 (define-key electric-history-map [home] 'beginning-of-buffer) 82 (define-key electric-history-map [down] 'next-line) 83 (define-key electric-history-map [up] 'previous-line) 84 (define-key electric-history-map [prior] 'scroll-down) 85 (define-key electric-history-map [next] 'scroll-up) 86 (define-key electric-history-map "\C-l" 'recenter) 87 (define-key electric-history-map "\e\C-v" 'scroll-other-window)) 88 89(defvar electric-command-history-hook nil 90 "If non-nil, its value is called by `electric-command-history'.") 91 92(defun electric-command-history () 93 "\\<electric-history-map>Major mode for examining and redoing commands from `command-history'. 94This pops up a window with the Command History listing. 95The number of command listed is controlled by `list-command-history-max'. 96The command history is filtered by `list-command-history-filter' if non-nil. 97Combines typeout Command History list window with menu like selection 98of an expression from the history for re-evaluation in the *original* buffer. 99 100The history displayed is filtered by `list-command-history-filter' if non-nil. 101 102Like Emacs-Lisp mode except that characters do not insert themselves and 103Tab and Linefeed do not indent. Instead these commands are provided: 104\\{electric-history-map} 105 106Calls the value of `electric-command-history-hook' if that is non-nil. 107The Command History listing is recomputed each time this mode is invoked." 108 (interactive) 109 (let ((electric-history-in-progress t) 110 (old-buffer (current-buffer)) 111 (todo)) 112 (unwind-protect 113 (setq todo 114 (catch 'electric-history-quit 115 (save-window-excursion 116 (save-window-excursion 117 (list-command-history) 118 (set-buffer "*Command History*") 119 (Command-history-setup) 120 (setq major-mode 'electric-command-history) 121 (setq mode-name "Electric History") 122 (use-local-map electric-history-map)) 123 (Electric-pop-up-window "*Command History*") 124 (run-hooks 'electric-command-history-hook) 125 (if (eobp) 126 (progn (ding) 127 (message "No command history.") 128 (throw 'electric-history-quit nil)) 129 (let ((Helper-return-blurb "return to History")) 130 (Electric-command-loop 'electric-history-quit 131 "->" t)))))) 132 (set-buffer "*Command History*") 133 (command-history-mode) 134 (bury-buffer (current-buffer))) 135 (if (consp todo) 136 (progn (set-buffer old-buffer) 137 (if (car todo) 138 (apply (car (car (cdr todo))) (cdr (car (cdr todo)))) 139 (edit-and-eval-command "Redo: " (car (cdr todo)))))))) 140 141(defun Electric-history-undefined () 142 (interactive) 143 (ding) 144 (message "%s" (substitute-command-keys "Type \\[Helper-help] for help, ? for commands, C-c C-c to quit, Space to execute")) 145 (sit-for 4)) 146 147(defun Electric-history-quit () 148 "Quit Electric Command History, restoring previous window configuration." 149 (interactive) 150 (if (boundp 'electric-history-in-progress) 151 (progn (message "") 152 (throw 'electric-history-quit nil)))) 153 154(provide 'echistory) 155 156;;; arch-tag: 1e5018fe-190f-44a7-9109-a895dcac4c50 157;;; echistory.el ends here 158