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