1 ;;; echistory.el --- Electric Command History Mode
3 ;; Author: K. Shane Hartman
5 ;; Last-Modified: 09 May 1991
7 ;; Copyright (C) 1985 Free Software Foundation, Inc.
9 ;; This file is part of GNU Emacs.
11 ;; GNU Emacs is free software; you can redistribute it and/or modify
12 ;; it under the terms of the GNU General Public License as published by
13 ;; the Free Software Foundation; either version 2, or (at your option)
16 ;; GNU Emacs is distributed in the hope that it will be useful,
17 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
18 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 ;; GNU General Public License for more details.
21 ;; You should have received a copy of the GNU General Public License
22 ;; along with GNU Emacs; see the file COPYING. If not, write to
23 ;; the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
27 (require 'electric
) ; command loop
28 (require 'chistory
) ; history lister
31 (defun Electric-command-history-redo-expression (&optional noconfirm
)
32 "Edit current history line in minibuffer and execute result.
33 With prefix arg NOCONFIRM, execute current line as-is without editing."
37 (set-buffer "*Command History*")
39 (setq todo
(read (current-buffer)))
40 (if (boundp 'electric-history-in-progress
)
41 (if todo
(throw 'electric-history-quit
(list noconfirm todo
)))))))
43 (defvar electric-history-map
())
44 (if electric-history-map
46 (setq electric-history-map
(make-keymap))
47 (fillarray electric-history-map
'Electric-history-undefined
)
48 (define-key electric-history-map
"\e" (make-keymap))
49 (fillarray (lookup-key electric-history-map
"\e") 'Electric-history-undefined
)
50 (define-key electric-history-map
"\C-u" 'universal-argument
)
51 (define-key electric-history-map
" " 'Electric-command-history-redo-expression
)
52 (define-key electric-history-map
"!" 'Electric-command-history-redo-expression
)
53 (define-key electric-history-map
"\e\C-x" 'eval-sexp
)
54 (define-key electric-history-map
"\e\C-d" 'down-list
)
55 (define-key electric-history-map
"\e\C-u" 'backward-up-list
)
56 (define-key electric-history-map
"\e\C-b" 'backward-sexp
)
57 (define-key electric-history-map
"\e\C-f" 'forward-sexp
)
58 (define-key electric-history-map
"\e\C-a" 'beginning-of-defun
)
59 (define-key electric-history-map
"\e\C-e" 'end-of-defun
)
60 (define-key electric-history-map
"\e\C-n" 'forward-list
)
61 (define-key electric-history-map
"\e\C-p" 'backward-list
)
62 (define-key electric-history-map
"q" 'Electric-history-quit
)
63 (define-key electric-history-map
"\C-c" nil
)
64 (define-key electric-history-map
"\C-c\C-c" 'Electric-history-quit
)
65 (define-key electric-history-map
"\C-]" 'Electric-history-quit
)
66 (define-key electric-history-map
"\C-z" 'suspend-emacs
)
67 (define-key electric-history-map
"\C-h" 'Helper-help
)
68 (define-key electric-history-map
"?" 'Helper-describe-bindings
)
69 (define-key electric-history-map
"\e>" 'end-of-buffer
)
70 (define-key electric-history-map
"\e<" 'beginning-of-buffer
)
71 (define-key electric-history-map
"\n" 'next-line
)
72 (define-key electric-history-map
"\r" 'next-line
)
73 (define-key electric-history-map
"\177" 'previous-line
)
74 (define-key electric-history-map
"\C-n" 'next-line
)
75 (define-key electric-history-map
"\C-p" 'previous-line
)
76 (define-key electric-history-map
"\ev" 'scroll-down
)
77 (define-key electric-history-map
"\C-v" 'scroll-up
)
78 (define-key electric-history-map
"\C-l" 'recenter
)
79 (define-key electric-history-map
"\e\C-v" 'scroll-other-window
))
81 (defvar electric-command-history-hook nil
82 "If non-nil, its value is called by `electric-command-history'.")
84 (defun electric-command-history ()
85 "\\<electric-history-map>Major mode for examining and redoing commands from `command-history'.
86 This pops up a window with the Command History listing.
87 The number of command listed is controlled by `list-command-history-max'.
88 The command history is filtered by `list-command-history-filter' if non-nil.
89 Combines typeout Command History list window with menu like selection
90 of an expression from the history for re-evaluation in the *original* buffer.
92 The history displayed is filtered by `list-command-history-filter' if non-nil.
94 Like Emacs-Lisp mode except that characters do not insert themselves and
95 Tab and Linefeed do not indent. Instead these commands are provided:
96 \\{electric-history-map}
98 Calls the value of `electric-command-history-hook' if that is non-nil.
99 The Command History listing is recomputed each time this mode is invoked."
101 (let ((electric-history-in-progress t
)
102 (old-buffer (current-buffer))
106 (catch 'electric-history-quit
107 (save-window-excursion
108 (save-window-excursion
109 (list-command-history)
110 (set-buffer "*Command History*")
111 (Command-history-setup 'electric-command-history
113 electric-history-map
))
114 (Electric-pop-up-window "*Command History*")
115 (run-hooks 'electric-command-history-hook
)
118 (message "No command history.")
119 (throw 'electric-history-quit nil
))
120 (let ((Helper-return-blurb "return to History"))
121 (Electric-command-loop 'electric-history-quit
123 (set-buffer "*Command History*")
124 (Command-history-setup)
125 (bury-buffer (current-buffer)))
127 (progn (set-buffer old-buffer
)
129 (apply (car (car (cdr todo
))) (cdr (car (cdr todo
))))
130 (edit-and-eval-command "Redo: " (car (cdr todo
))))))))
132 (defun Electric-history-undefined ()
135 (message "Type C-h for help, ? for commands, C-c to quit, Space to execute")
138 (defun Electric-history-quit ()
139 "Quit Electric Command History, restoring previous window configuration."
141 (if (boundp 'electric-history-in-progress
)
143 (throw 'electric-history-quit nil
))))
145 ;;; echistory.el ends here