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- ;;; echistory.el --- Electric Command History Mode
-
- ;; Copyright (C) 1985 Free Software Foundation, Inc.
-
- ;; Author: K. Shane Hartman
- ;; Maintainer: FSF
-
- ;; 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.
-
- ;;; Code:
-
- (require 'electric) ; command loop
- (require 'chistory) ; history lister
-
- ;;;###autoload
- (defun Electric-command-history-redo-expression (&optional noconfirm)
- "Edit current history line in minibuffer and execute result.
- With prefix arg NOCONFIRM, execute current line as-is without editing."
- (interactive "P")
- (let (todo)
- (save-excursion
- (set-buffer "*Command History*")
- (beginning-of-line)
- (setq todo (read (current-buffer)))
- (if (boundp 'electric-history-in-progress)
- (if todo (throw 'electric-history-quit (list noconfirm todo)))))))
-
- (defvar electric-history-map ())
- (if electric-history-map
- ()
- (setq electric-history-map (make-sparse-keymap))
- (define-key electric-history-map [t] 'Electric-history-undefined)
- (define-key electric-history-map "\e" (make-sparse-keymap))
- (define-key electric-history-map [?\e t] 'Electric-history-undefined)
- (define-key electric-history-map "\C-u" 'universal-argument)
- (define-key electric-history-map " " 'Electric-command-history-redo-expression)
- (define-key electric-history-map "!" 'Electric-command-history-redo-expression)
- (define-key electric-history-map "\e\C-x" 'eval-sexp)
- (define-key electric-history-map "\e\C-d" 'down-list)
- (define-key electric-history-map "\e\C-u" 'backward-up-list)
- (define-key electric-history-map "\e\C-b" 'backward-sexp)
- (define-key electric-history-map "\e\C-f" 'forward-sexp)
- (define-key electric-history-map "\e\C-a" 'beginning-of-defun)
- (define-key electric-history-map "\e\C-e" 'end-of-defun)
- (define-key electric-history-map "\e\C-n" 'forward-list)
- (define-key electric-history-map "\e\C-p" 'backward-list)
- (define-key electric-history-map "q" 'Electric-history-quit)
- (define-key electric-history-map "\C-c" nil)
- (define-key electric-history-map "\C-c\C-c" 'Electric-history-quit)
- (define-key electric-history-map "\C-]" 'Electric-history-quit)
- (define-key electric-history-map "\C-z" 'suspend-emacs)
- (define-key electric-history-map (char-to-string help-char) 'Helper-help)
- (define-key electric-history-map "?" 'Helper-describe-bindings)
- (define-key electric-history-map "\e>" 'end-of-buffer)
- (define-key electric-history-map "\e<" 'beginning-of-buffer)
- (define-key electric-history-map "\n" 'next-line)
- (define-key electric-history-map "\r" 'next-line)
- (define-key electric-history-map "\177" 'previous-line)
- (define-key electric-history-map "\C-n" 'next-line)
- (define-key electric-history-map "\C-p" 'previous-line)
- (define-key electric-history-map "\ev" 'scroll-down)
- (define-key electric-history-map "\C-v" 'scroll-up)
- (define-key electric-history-map [home] 'beginning-of-buffer)
- (define-key electric-history-map [down] 'next-line)
- (define-key electric-history-map [up] 'previous-line)
- (define-key electric-history-map [prior] 'scroll-down)
- (define-key electric-history-map [next] 'scroll-up)
- (define-key electric-history-map "\C-l" 'recenter)
- (define-key electric-history-map "\e\C-v" 'scroll-other-window))
-
- (defvar electric-command-history-hook nil
- "If non-nil, its value is called by `electric-command-history'.")
-
- (defun electric-command-history ()
- "\\<electric-history-map>Major mode for examining and redoing commands from `command-history'.
- This pops up a window with the Command History listing.
- The number of command listed is controlled by `list-command-history-max'.
- The command history is filtered by `list-command-history-filter' if non-nil.
- Combines typeout Command History list window with menu like selection
- of an expression from the history for re-evaluation in the *original* buffer.
-
- The history displayed is filtered by `list-command-history-filter' if non-nil.
-
- Like Emacs-Lisp mode except that characters do not insert themselves and
- Tab and Linefeed do not indent. Instead these commands are provided:
- \\{electric-history-map}
-
- Calls the value of `electric-command-history-hook' if that is non-nil.
- The Command History listing is recomputed each time this mode is invoked."
- (interactive)
- (let ((electric-history-in-progress t)
- (old-buffer (current-buffer))
- (todo))
- (unwind-protect
- (setq todo
- (catch 'electric-history-quit
- (save-window-excursion
- (save-window-excursion
- (list-command-history)
- (set-buffer "*Command History*")
- (Command-history-setup 'electric-command-history
- "Electric History"
- electric-history-map))
- (Electric-pop-up-window "*Command History*")
- (run-hooks 'electric-command-history-hook)
- (if (eobp)
- (progn (ding)
- (message "No command history.")
- (throw 'electric-history-quit nil))
- (let ((Helper-return-blurb "return to History"))
- (Electric-command-loop 'electric-history-quit
- "->" t))))))
- (set-buffer "*Command History*")
- (Command-history-setup)
- (bury-buffer (current-buffer)))
- (if (consp todo)
- (progn (set-buffer old-buffer)
- (if (car todo)
- (apply (car (car (cdr todo))) (cdr (car (cdr todo))))
- (edit-and-eval-command "Redo: " (car (cdr todo))))))))
-
- (defun Electric-history-undefined ()
- (interactive)
- (ding)
- (message (substitute-command-keys "Type \\[Helper-help] for help, ? for commands, C-c C-c to quit, Space to execute"))
- (sit-for 4))
-
- (defun Electric-history-quit ()
- "Quit Electric Command History, restoring previous window configuration."
- (interactive)
- (if (boundp 'electric-history-in-progress)
- (progn (message "")
- (throw 'electric-history-quit nil))))
-
- ;;; echistory.el ends here
-