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