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1 | ;;; echistory.el --- Electric Command History Mode |
2 | ||
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3 | ;; Copyright (C) 1985 Free Software Foundation, Inc. |
4 | ||
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5 | ;; Author: K. Shane Hartman |
6 | ;; Maintainer: FSF | |
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7 | |
8 | ;; This file is part of GNU Emacs. | |
9 | ||
10 | ;; GNU Emacs is free software; you can redistribute it and/or modify | |
11 | ;; it under the terms of the GNU General Public License as published by | |
e5167999 | 12 | ;; the Free Software Foundation; either version 2, or (at your option) |
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13 | ;; any later version. |
14 | ||
15 | ;; GNU Emacs is distributed in the hope that it will be useful, | |
16 | ;; but WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
18 | ;; GNU General Public License for more details. | |
19 | ||
20 | ;; You should have received a copy of the GNU General Public License | |
21 | ;; along with GNU Emacs; see the file COPYING. If not, write to | |
22 | ;; the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. | |
23 | ||
e5167999 | 24 | ;;; Code: |
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25 | |
26 | (require 'electric) ; command loop | |
27 | (require 'chistory) ; history lister | |
28 | ||
f9f9507e | 29 | ;;;###autoload |
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30 | (defun Electric-command-history-redo-expression (&optional noconfirm) |
31 | "Edit current history line in minibuffer and execute result. | |
32 | With prefix arg NOCONFIRM, execute current line as-is without editing." | |
33 | (interactive "P") | |
34 | (let (todo) | |
35 | (save-excursion | |
36 | (set-buffer "*Command History*") | |
37 | (beginning-of-line) | |
38 | (setq todo (read (current-buffer))) | |
39 | (if (boundp 'electric-history-in-progress) | |
40 | (if todo (throw 'electric-history-quit (list noconfirm todo))))))) | |
41 | ||
42 | (defvar electric-history-map ()) | |
43 | (if electric-history-map | |
44 | () | |
45 | (setq electric-history-map (make-keymap)) | |
46 | (fillarray electric-history-map 'Electric-history-undefined) | |
47 | (define-key electric-history-map "\e" (make-keymap)) | |
48 | (fillarray (lookup-key electric-history-map "\e") 'Electric-history-undefined) | |
49 | (define-key electric-history-map "\C-u" 'universal-argument) | |
50 | (define-key electric-history-map " " 'Electric-command-history-redo-expression) | |
51 | (define-key electric-history-map "!" 'Electric-command-history-redo-expression) | |
52 | (define-key electric-history-map "\e\C-x" 'eval-sexp) | |
53 | (define-key electric-history-map "\e\C-d" 'down-list) | |
54 | (define-key electric-history-map "\e\C-u" 'backward-up-list) | |
55 | (define-key electric-history-map "\e\C-b" 'backward-sexp) | |
56 | (define-key electric-history-map "\e\C-f" 'forward-sexp) | |
57 | (define-key electric-history-map "\e\C-a" 'beginning-of-defun) | |
58 | (define-key electric-history-map "\e\C-e" 'end-of-defun) | |
59 | (define-key electric-history-map "\e\C-n" 'forward-list) | |
60 | (define-key electric-history-map "\e\C-p" 'backward-list) | |
61 | (define-key electric-history-map "q" 'Electric-history-quit) | |
62 | (define-key electric-history-map "\C-c" nil) | |
63 | (define-key electric-history-map "\C-c\C-c" 'Electric-history-quit) | |
64 | (define-key electric-history-map "\C-]" 'Electric-history-quit) | |
65 | (define-key electric-history-map "\C-z" 'suspend-emacs) | |
e17d2fd1 | 66 | (define-key electric-history-map (char-to-string help-char) 'Helper-help) |
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67 | (define-key electric-history-map "?" 'Helper-describe-bindings) |
68 | (define-key electric-history-map "\e>" 'end-of-buffer) | |
69 | (define-key electric-history-map "\e<" 'beginning-of-buffer) | |
70 | (define-key electric-history-map "\n" 'next-line) | |
71 | (define-key electric-history-map "\r" 'next-line) | |
72 | (define-key electric-history-map "\177" 'previous-line) | |
73 | (define-key electric-history-map "\C-n" 'next-line) | |
74 | (define-key electric-history-map "\C-p" 'previous-line) | |
75 | (define-key electric-history-map "\ev" 'scroll-down) | |
76 | (define-key electric-history-map "\C-v" 'scroll-up) | |
77 | (define-key electric-history-map "\C-l" 'recenter) | |
78 | (define-key electric-history-map "\e\C-v" 'scroll-other-window)) | |
79 | ||
80 | (defvar electric-command-history-hook nil | |
81 | "If non-nil, its value is called by `electric-command-history'.") | |
82 | ||
83 | (defun electric-command-history () | |
84 | "\\<electric-history-map>Major mode for examining and redoing commands from `command-history'. | |
85 | This pops up a window with the Command History listing. | |
86 | The number of command listed is controlled by `list-command-history-max'. | |
87 | The command history is filtered by `list-command-history-filter' if non-nil. | |
88 | Combines typeout Command History list window with menu like selection | |
89 | of an expression from the history for re-evaluation in the *original* buffer. | |
90 | ||
91 | The history displayed is filtered by `list-command-history-filter' if non-nil. | |
92 | ||
93 | Like Emacs-Lisp mode except that characters do not insert themselves and | |
94 | Tab and Linefeed do not indent. Instead these commands are provided: | |
95 | \\{electric-history-map} | |
96 | ||
97 | Calls the value of `electric-command-history-hook' if that is non-nil. | |
98 | The Command History listing is recomputed each time this mode is invoked." | |
99 | (interactive) | |
100 | (let ((electric-history-in-progress t) | |
101 | (old-buffer (current-buffer)) | |
102 | (todo)) | |
103 | (unwind-protect | |
104 | (setq todo | |
105 | (catch 'electric-history-quit | |
106 | (save-window-excursion | |
107 | (save-window-excursion | |
108 | (list-command-history) | |
109 | (set-buffer "*Command History*") | |
110 | (Command-history-setup 'electric-command-history | |
111 | "Electric History" | |
112 | electric-history-map)) | |
113 | (Electric-pop-up-window "*Command History*") | |
114 | (run-hooks 'electric-command-history-hook) | |
115 | (if (eobp) | |
116 | (progn (ding) | |
117 | (message "No command history.") | |
118 | (throw 'electric-history-quit nil)) | |
119 | (let ((Helper-return-blurb "return to History")) | |
120 | (Electric-command-loop 'electric-history-quit | |
121 | "->" t)))))) | |
122 | (set-buffer "*Command History*") | |
123 | (Command-history-setup) | |
124 | (bury-buffer (current-buffer))) | |
125 | (if (consp todo) | |
126 | (progn (set-buffer old-buffer) | |
127 | (if (car todo) | |
128 | (apply (car (car (cdr todo))) (cdr (car (cdr todo)))) | |
129 | (edit-and-eval-command "Redo: " (car (cdr todo)))))))) | |
130 | ||
131 | (defun Electric-history-undefined () | |
132 | (interactive) | |
133 | (ding) | |
8892e83c | 134 | (message (substitute-command-keys "Type \\[Help-for-help] for help, ? for commands, C-c to quit, Space to execute")) |
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135 | (sit-for 4)) |
136 | ||
137 | (defun Electric-history-quit () | |
138 | "Quit Electric Command History, restoring previous window configuration." | |
139 | (interactive) | |
140 | (if (boundp 'electric-history-in-progress) | |
141 | (progn (message "") | |
142 | (throw 'electric-history-quit nil)))) | |
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143 | |
144 | ;;; echistory.el ends here |