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156 lines
6.4 KiB
EmacsLisp
156 lines
6.4 KiB
EmacsLisp
;;; echistory.el --- Electric Command History Mode
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;; Copyright (C) 1985 Free Software Foundation, Inc.
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;; Author: K. Shane Hartman
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;; Maintainer: FSF
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;; This file is part of GNU Emacs.
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;; GNU Emacs is free software; you can redistribute it and/or modify
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;; it under the terms of the GNU General Public License as published by
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;; the Free Software Foundation; either version 2, or (at your option)
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;; any later version.
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;; GNU Emacs is distributed in the hope that it will be useful,
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;; but WITHOUT ANY WARRANTY; without even the implied warranty of
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;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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;; GNU General Public License for more details.
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;; You should have received a copy of the GNU General Public License
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;; along with GNU Emacs; see the file COPYING. If not, write to the
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;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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;; Boston, MA 02111-1307, USA.
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;;; Commentary:
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;;; Code:
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(require 'electric) ; command loop
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(require 'chistory) ; history lister
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;;;###autoload
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(defun Electric-command-history-redo-expression (&optional noconfirm)
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"Edit current history line in minibuffer and execute result.
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With prefix arg NOCONFIRM, execute current line as-is without editing."
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(interactive "P")
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(let (todo)
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(save-excursion
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(set-buffer "*Command History*")
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(beginning-of-line)
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(setq todo (read (current-buffer)))
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(if (boundp 'electric-history-in-progress)
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(if todo (throw 'electric-history-quit (list noconfirm todo)))))))
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(defvar electric-history-map ())
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(if electric-history-map
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()
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(setq electric-history-map (make-sparse-keymap))
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(define-key electric-history-map [t] 'Electric-history-undefined)
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(define-key electric-history-map "\e" (make-sparse-keymap))
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(define-key electric-history-map [?\e t] 'Electric-history-undefined)
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(define-key electric-history-map "\C-u" 'universal-argument)
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(define-key electric-history-map " " 'Electric-command-history-redo-expression)
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(define-key electric-history-map "!" 'Electric-command-history-redo-expression)
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(define-key electric-history-map "\e\C-x" 'eval-sexp)
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(define-key electric-history-map "\e\C-d" 'down-list)
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(define-key electric-history-map "\e\C-u" 'backward-up-list)
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(define-key electric-history-map "\e\C-b" 'backward-sexp)
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(define-key electric-history-map "\e\C-f" 'forward-sexp)
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(define-key electric-history-map "\e\C-a" 'beginning-of-defun)
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(define-key electric-history-map "\e\C-e" 'end-of-defun)
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(define-key electric-history-map "\e\C-n" 'forward-list)
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(define-key electric-history-map "\e\C-p" 'backward-list)
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(define-key electric-history-map "q" 'Electric-history-quit)
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(define-key electric-history-map "\C-c" nil)
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(define-key electric-history-map "\C-c\C-c" 'Electric-history-quit)
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(define-key electric-history-map "\C-]" 'Electric-history-quit)
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(define-key electric-history-map "\C-z" 'suspend-emacs)
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(define-key electric-history-map (char-to-string help-char) 'Helper-help)
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(define-key electric-history-map "?" 'Helper-describe-bindings)
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(define-key electric-history-map "\e>" 'end-of-buffer)
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(define-key electric-history-map "\e<" 'beginning-of-buffer)
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(define-key electric-history-map "\n" 'next-line)
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(define-key electric-history-map "\r" 'next-line)
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(define-key electric-history-map "\177" 'previous-line)
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(define-key electric-history-map "\C-n" 'next-line)
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(define-key electric-history-map "\C-p" 'previous-line)
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(define-key electric-history-map "\ev" 'scroll-down)
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(define-key electric-history-map "\C-v" 'scroll-up)
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(define-key electric-history-map [home] 'beginning-of-buffer)
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(define-key electric-history-map [down] 'next-line)
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(define-key electric-history-map [up] 'previous-line)
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(define-key electric-history-map [prior] 'scroll-down)
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(define-key electric-history-map [next] 'scroll-up)
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(define-key electric-history-map "\C-l" 'recenter)
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(define-key electric-history-map "\e\C-v" 'scroll-other-window))
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(defvar electric-command-history-hook nil
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"If non-nil, its value is called by `electric-command-history'.")
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(defun electric-command-history ()
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"\\<electric-history-map>Major mode for examining and redoing commands from `command-history'.
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This pops up a window with the Command History listing.
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The number of command listed is controlled by `list-command-history-max'.
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The command history is filtered by `list-command-history-filter' if non-nil.
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Combines typeout Command History list window with menu like selection
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of an expression from the history for re-evaluation in the *original* buffer.
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The history displayed is filtered by `list-command-history-filter' if non-nil.
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Like Emacs-Lisp mode except that characters do not insert themselves and
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Tab and Linefeed do not indent. Instead these commands are provided:
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\\{electric-history-map}
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Calls the value of `electric-command-history-hook' if that is non-nil.
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The Command History listing is recomputed each time this mode is invoked."
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(interactive)
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(let ((electric-history-in-progress t)
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(old-buffer (current-buffer))
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(todo))
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(unwind-protect
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(setq todo
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(catch 'electric-history-quit
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(save-window-excursion
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(save-window-excursion
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(list-command-history)
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(set-buffer "*Command History*")
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(Command-history-setup)
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(setq major-mode 'electric-command-history)
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(setq mode-name "Electric History")
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(use-local-map electric-history-map))
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(Electric-pop-up-window "*Command History*")
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(run-hooks 'electric-command-history-hook)
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(if (eobp)
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(progn (ding)
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(message "No command history.")
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(throw 'electric-history-quit nil))
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(let ((Helper-return-blurb "return to History"))
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(Electric-command-loop 'electric-history-quit
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"->" t))))))
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(set-buffer "*Command History*")
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(command-history-mode)
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(bury-buffer (current-buffer)))
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(if (consp todo)
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(progn (set-buffer old-buffer)
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(if (car todo)
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(apply (car (car (cdr todo))) (cdr (car (cdr todo))))
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(edit-and-eval-command "Redo: " (car (cdr todo))))))))
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(defun Electric-history-undefined ()
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(interactive)
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(ding)
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(message (substitute-command-keys "Type \\[Helper-help] for help, ? for commands, C-c C-c to quit, Space to execute"))
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(sit-for 4))
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(defun Electric-history-quit ()
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"Quit Electric Command History, restoring previous window configuration."
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(interactive)
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(if (boundp 'electric-history-in-progress)
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(progn (message "")
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(throw 'electric-history-quit nil))))
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(provide 'echistory)
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;;; echistory.el ends here
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