[bpt/emacs.git] / lisp / ehelp.el

;;; ehelp.el --- bindings for electric-help mode

;; Copyright (C) 1986 Free Software Foundation, Inc.

;; Maintainer: FSF
;; Keywords: help, extensions

;; This file is part of GNU Emacs.

;; GNU Emacs is free software; you can redistribute it and/or modify
;; it under the terms of the GNU General Public License as published by
;; the Free Software Foundation; either version 2, or (at your option)
;; any later version.

;; GNU Emacs is distributed in the hope that it will be useful,
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
;; GNU General Public License for more details.

;; You should have received a copy of the GNU General Public License
;; along with GNU Emacs; see the file COPYING.  If not, write to
;; the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.

;;; Commentary:

;; This package provides a pre-packaged `Electric Help Mode' for
;; browsing on-line help screens.  There is one entry point,
;; `with-electric-help'; All you have to give it is a no-argument
;; function that generates the actual text of the help into the urrent
;; buffer.

;;; Code:

(require 'electric)
(defvar electric-help-map ()
  "Keymap defining commands available in `electric-help-mode'.")

(put 'electric-help-undefined 'suppress-keymap t)
(if electric-help-map
    ()
  (let ((map (make-keymap)))
    (fillarray (car (cdr map)) 'electric-help-undefined)
    (define-key map (char-to-string meta-prefix-char) (copy-keymap map))
    (define-key map (char-to-string help-char) 'electric-help-help)
    (define-key map "?" 'electric-help-help)
    (define-key map " " 'scroll-up)
    (define-key map "\^?" 'scroll-down)
    (define-key map "." 'beginning-of-buffer)
    (define-key map "<" 'beginning-of-buffer)
    (define-key map ">" 'end-of-buffer)
    ;(define-key map "\C-g" 'electric-help-exit)
    (define-key map "q" 'electric-help-exit)
    (define-key map "Q" 'electric-help-exit)
    ;;a better key than this?
    (define-key map "r" 'electric-help-retain)

    (setq electric-help-map map)))
   
(defun electric-help-mode ()
  "`with-electric-help' temporarily places its buffer in this mode.
\(On exit from `with-electric-help', the buffer is put in `default-major-mode'.)"
  (setq buffer-read-only t)
  (setq mode-name "Help")
  (setq major-mode 'help)
  (setq mode-line-buffer-identification '(" Help:  %b"))
  (use-local-map electric-help-map)
  ;; this is done below in with-electric-help
  ;(run-hooks 'electric-help-mode-hook)
  )

(defun with-electric-help (thunk &optional buffer noerase)
  "Arguments are THUNK &optional BUFFER NOERASE.  BUFFER defaults to \"*Help*\"
THUNK is a function of no arguments which is called to initialize
the contents of BUFFER.  BUFFER will be erased before THUNK is called unless
NOERASE is non-nil.  THUNK will be called with `standard-output' bound to
the buffer specified by BUFFER

After THUNK has been called, this function \"electrically\" pops up a window
in which BUFFER is displayed and allows the user to scroll through that buffer
in electric-help-mode.
When the user exits (with `electric-help-exit', or otherwise) the help
buffer's window disappears (i.e., we use `save-window-excursion')
BUFFER is put into `default-major-mode' (or `fundamental-mode') when we exit"
  (setq buffer (get-buffer-create (or buffer "*Help*")))
  (let ((one (one-window-p t))
	(config (current-window-configuration))
        (bury nil))
    (unwind-protect
         (save-excursion
           (if one (goto-char (window-start (selected-window))))
           (let ((pop-up-windows t))
             (pop-to-buffer buffer))
           (save-excursion
             (set-buffer buffer)
             (electric-help-mode)
             (setq buffer-read-only nil)
             (or noerase (erase-buffer)))
           (let ((standard-output buffer))
             (if (not (funcall thunk))
                 (progn
                   (set-buffer buffer)
                   (set-buffer-modified-p nil)
                   (goto-char (point-min))
                   (if one (shrink-window-if-larger-than-buffer (selected-window))))))
           (set-buffer buffer)
           (run-hooks 'electric-help-mode-hook)
           (if (eq (car-safe (electric-help-command-loop))
                   'retain)
               (setq config (current-window-configuration))
               (setq bury t)))
      (message "")
      (set-buffer buffer)
      (setq buffer-read-only nil)
      (condition-case ()
          (funcall (or default-major-mode 'fundamental-mode))
        (error nil))
      (set-window-configuration config)
      (if bury
          (progn
            ;;>> Perhaps this shouldn't be done.
            ;; so that when we say "Press space to bury" we mean it
            (replace-buffer-in-windows buffer)
            ;; must do this outside of save-window-excursion
            (bury-buffer buffer))))))

(defun electric-help-command-loop ()
  (catch 'exit
    (if (pos-visible-in-window-p (point-max))
	(progn (message "<<< Press Space to bury the help buffer >>>")
	       (if (eq (setq unread-command-events (list (read-event))) ?\  )
		   (progn (setq unread-command-events nil)
			  (throw 'exit t)))))
    (let (up down both neither
	  (standard (and (eq (key-binding " ")
			     'scroll-up)
			 (eq (key-binding "\^?")
			     'scroll-down)
			 (eq (key-binding "Q")
			     'electric-help-exit)
			 (eq (key-binding "q")
			     'electric-help-exit))))
      (Electric-command-loop
        'exit
	(function (lambda ()
	  (let ((min (pos-visible-in-window-p (point-min)))
		(max (pos-visible-in-window-p (point-max))))
	    (cond ((and min max)
		   (cond (standard "Press Q to exit ")
			 (neither)
			 (t (setq neither (substitute-command-keys "Press \\[scroll-up] to exit ")))))
		  (min
		   (cond (standard "Press SPC to scroll, Q to exit ")
			 (up)
			 (t (setq up (substitute-command-keys "Press \\[scroll-up] to scroll; \\[electric-help-exit] to exit ")))))
		  (max
		   (cond (standard "Press DEL to scroll back, Q to exit ")
			 (down)
			 (t (setq down (substitute-command-keys "Press \\[scroll-down] to scroll back, \\[scroll-up] to exit ")))))
		  (t
		   (cond (standard "Press SPC to scroll, DEL to scroll back, Q to exit ")
			 (both)
			 (t (setq both (substitute-command-keys "Press \\[scroll-up] to scroll, \\[scroll-down] to scroll back, \\[electric-help-exit] to exit ")))))))))
		    t))))


\f
;(defun electric-help-scroll-up (arg)
;  ">>>Doc"
;  (interactive "P")
;  (if (and (null arg) (pos-visible-in-window-p (point-max)))
;      (electric-help-exit)
;    (scroll-up arg)))

(defun electric-help-exit ()
  ">>>Doc"
  (interactive)
  (throw 'exit t))

(defun electric-help-retain ()
  "Exit `electric-help', retaining the current window/buffer configuration.
\(The *Help* buffer will not be selected, but \\[switch-to-buffer-other-window] RET
will select it.)"
  (interactive)
  (throw 'exit '(retain)))


(defun electric-help-undefined ()
  (interactive)
  (error "%s is undefined -- Press %s to exit"
	 (mapconcat 'single-key-description (this-command-keys) " ")
	 (if (eq (key-binding "Q") 'electric-help-exit)
	     "Q"
	   (substitute-command-keys "\\[electric-help-exit]"))))


;>>> this needs to be hairified (recursive help, anybody?)
(defun electric-help-help ()
  (interactive)
  (if (and (eq (key-binding "Q") 'electric-help-exit)
	   (eq (key-binding " ") 'scroll-up)
	   (eq (key-binding "\^?") 'scroll-down))
      (message "SPC scrolls forward, DEL scrolls back, Q exits and burys help buffer")
    ;; to give something for user to look at while slow substitute-cmd-keys
    ;;  grinds away
    (message "Help...")
    (message "%s" (substitute-command-keys "\\[scroll-up] scrolls forward, \\[scroll-down] scrolls back, \\[electric-help-exit] exits.")))
  (sit-for 2))

\f
(defun electric-helpify (fun)
  (let ((name "*Help*"))
    (if (save-window-excursion
	  ;; kludge-o-rama
	  (let* ((p (symbol-function 'print-help-return-message))
		 (b (get-buffer name))
		 (m (buffer-modified-p b)))
	    (and b (not (get-buffer-window b))
		 (setq b nil))
	    (unwind-protect
		(progn
		  (message "%s..." (capitalize (symbol-name fun)))
		  ;; with-output-to-temp-buffer marks the buffer as unmodified.
		  ;; kludging excessively and relying on that as some sort
		  ;;  of indication leads to the following abomination...
		  ;;>> This would be doable without such icky kludges if either
		  ;;>> (a) there were a function to read the interactive
		  ;;>>     args for a command and return a list of those args.
		  ;;>>     (To which one would then just apply the command)
		  ;;>>     (The only problem with this is that interactive-p
		  ;;>>      would break, but that is such a misfeature in
		  ;;>>      any case that I don't care)
		  ;;>>     It is easy to do this for emacs-lisp functions;
		  ;;>>     the only problem is getting the interactive spec
		  ;;>>     for subrs
		  ;;>> (b) there were a function which returned a
		  ;;>>     modification-tick for a buffer.  One could tell
		  ;;>>     whether a buffer had changed by whether the
		  ;;>>     modification-tick were different.
		  ;;>>     (Presumably there would have to be a way to either
		  ;;>>      restore the tick to some previous value, or to
		  ;;>>      suspend updating of the tick in order to allow
		  ;;>>      things like momentary-string-display)
		  (and b
		       (save-excursion
			 (set-buffer b)
			 (set-buffer-modified-p t)))
		  (fset 'print-help-return-message 'ignore)
		  (call-interactively fun)
		  (and (get-buffer name)
		       (get-buffer-window (get-buffer name))
		       (or (not b)
			   (not (eq b (get-buffer name)))
			   (not (buffer-modified-p b)))))
	      (fset 'print-help-return-message p)
	      (and b (buffer-name b)
		   (save-excursion
		     (set-buffer b)
		     (set-buffer-modified-p m))))))
	(with-electric-help 'ignore name t))))

\f
(defun electric-describe-key ()
  (interactive)
  (electric-helpify 'describe-key))

(defun electric-describe-mode ()
  (interactive)
  (electric-helpify 'describe-mode))

(defun electric-view-lossage ()
  (interactive)
  (electric-helpify 'view-lossage))

;(defun electric-help-for-help ()
;  "See help-for-help"
;  (interactive)
;  )

(defun electric-describe-function ()
  (interactive)
  (electric-helpify 'describe-function))

(defun electric-describe-variable ()
  (interactive)
  (electric-helpify 'describe-variable))

(defun electric-describe-bindings ()
  (interactive)
  (electric-helpify 'describe-bindings))

(defun electric-describe-syntax ()
  (interactive)
  (electric-helpify 'describe-syntax))

(defun electric-command-apropos ()
  (interactive)
  (electric-helpify 'command-apropos))

;(define-key help-map "a" 'electric-command-apropos)


\f
;;;; ehelp-map

(defvar ehelp-map ())
(if ehelp-map
    nil
  (let ((map (copy-keymap help-map))) 
    (substitute-key-definition 'describe-key 'electric-describe-key map)
    (substitute-key-definition 'describe-mode 'electric-describe-mode map)
    (substitute-key-definition 'view-lossage 'electric-view-lossage map)
    (substitute-key-definition 'describe-function 'electric-describe-function map)
    (substitute-key-definition 'describe-variable 'electric-describe-variable map)
    (substitute-key-definition 'describe-bindings 'electric-describe-bindings map)
    (substitute-key-definition 'describe-syntax 'electric-describe-syntax map)

    (setq ehelp-map map)
    (fset 'ehelp-command map)))

;; Do (define-key global-map "\C-h" 'ehelp-command) if you want to win

(provide 'ehelp) 

;;; ehelp.el ends here
Commit	Line	Data
c0274f38 ER	1	;;; ehelp.el --- bindings for electric-help mode
c0274f38 ER	2
3a801d0c ER	3	;; Copyright (C) 1986 Free Software Foundation, Inc.
3a801d0c ER	4
e5167999	5	;; Maintainer: FSF
fd7fa35a	6	;; Keywords: help, extensions
e5167999	7
a2535589 JA	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)
a2535589 JA	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
e41b2db1 ER	24	;;; Commentary:
	25
	26	;; This package provides a pre-packaged `Electric Help Mode' for
	27	;; browsing on-line help screens. There is one entry point,
	28	;; `with-electric-help'; All you have to give it is a no-argument
	29	;; function that generates the actual text of the help into the urrent
	30	;; buffer.
	31
e5167999 ER	32	;;; Code:
e5167999 ER	33
a2535589	34	(require 'electric)
a2535589	35	(defvar electric-help-map ()
d5b9d1d8	36	"Keymap defining commands available in `electric-help-mode'.")
a2535589 JA	37
	38	(put 'electric-help-undefined 'suppress-keymap t)
	39	(if electric-help-map
	40	()
	41	(let ((map (make-keymap)))
e8a57935	42	(fillarray (car (cdr map)) 'electric-help-undefined)
a2535589 JA	43	(define-key map (char-to-string meta-prefix-char) (copy-keymap map))
	44	(define-key map (char-to-string help-char) 'electric-help-help)
	45	(define-key map "?" 'electric-help-help)
	46	(define-key map " " 'scroll-up)
	47	(define-key map "\^?" 'scroll-down)
	48	(define-key map "." 'beginning-of-buffer)
	49	(define-key map "<" 'beginning-of-buffer)
	50	(define-key map ">" 'end-of-buffer)
	51	;(define-key map "\C-g" 'electric-help-exit)
	52	(define-key map "q" 'electric-help-exit)
	53	(define-key map "Q" 'electric-help-exit)
	54	;;a better key than this?
	55	(define-key map "r" 'electric-help-retain)
	56
	57	(setq electric-help-map map)))
	58
	59	(defun electric-help-mode ()
d5b9d1d8 JB	60	"`with-electric-help' temporarily places its buffer in this mode.
d5b9d1d8 JB	61	\(On exit from `with-electric-help', the buffer is put in `default-major-mode'.)"
a2535589 JA	62	(setq buffer-read-only t)
	63	(setq mode-name "Help")
	64	(setq major-mode 'help)
	65	(setq mode-line-buffer-identification '(" Help: %b"))
	66	(use-local-map electric-help-map)
	67	;; this is done below in with-electric-help
	68	;(run-hooks 'electric-help-mode-hook)
	69	)
	70
	71	(defun with-electric-help (thunk &optional buffer noerase)
d5b9d1d8 JB	72	"Arguments are THUNK &optional BUFFER NOERASE. BUFFER defaults to \"Help\"
	73	THUNK is a function of no arguments which is called to initialize
	74	the contents of BUFFER. BUFFER will be erased before THUNK is called unless
	75	NOERASE is non-nil. THUNK will be called with `standard-output' bound to
	76	the buffer specified by BUFFER
a2535589 JA	77
	78	After THUNK has been called, this function \"electrically\" pops up a window
	79	in which BUFFER is displayed and allows the user to scroll through that buffer
	80	in electric-help-mode.
d5b9d1d8 JB	81	When the user exits (with `electric-help-exit', or otherwise) the help
	82	buffer's window disappears (i.e., we use `save-window-excursion')
	83	BUFFER is put into `default-major-mode' (or `fundamental-mode') when we exit"
a2535589 JA	84	(setq buffer (get-buffer-create (or buffer "Help")))
a2535589 JA	85	(let ((one (one-window-p t))
88c269cb	86	(config (current-window-configuration))
	87	(bury nil))
	88	(unwind-protect
	89	(save-excursion
	90	(if one (goto-char (window-start (selected-window))))
	91	(let ((pop-up-windows t))
	92	(pop-to-buffer buffer))
	93	(save-excursion
	94	(set-buffer buffer)
	95	(electric-help-mode)
	96	(setq buffer-read-only nil)
	97	(or noerase (erase-buffer)))
	98	(let ((standard-output buffer))
	99	(if (not (funcall thunk))
	100	(progn
	101	(set-buffer buffer)
	102	(set-buffer-modified-p nil)
	103	(goto-char (point-min))
	104	(if one (shrink-window-if-larger-than-buffer (selected-window))))))
	105	(set-buffer buffer)
	106	(run-hooks 'electric-help-mode-hook)
	107	(if (eq (car-safe (electric-help-command-loop))
	108	'retain)
	109	(setq config (current-window-configuration))
	110	(setq bury t)))
	111	(message "")
	112	(set-buffer buffer)
	113	(setq buffer-read-only nil)
	114	(condition-case ()
	115	(funcall (or default-major-mode 'fundamental-mode))
	116	(error nil))
	117	(set-window-configuration config)
	118	(if bury
	119	(progn
	120	;;>> Perhaps this shouldn't be done.
	121	;; so that when we say "Press space to bury" we mean it
	122	(replace-buffer-in-windows buffer)
	123	;; must do this outside of save-window-excursion
	124	(bury-buffer buffer))))))
a2535589 JA	125
	126	(defun electric-help-command-loop ()
	127	(catch 'exit
	128	(if (pos-visible-in-window-p (point-max))
	129	(progn (message "<<< Press Space to bury the help buffer >>>")
07f6d4ae	130	(if (eq (setq unread-command-events (list (read-event))) ?\ )
dbc4e1c1	131	(progn (setq unread-command-events nil)
a2535589 JA	132	(throw 'exit t)))))
	133	(let (up down both neither
	134	(standard (and (eq (key-binding " ")
	135	'scroll-up)
	136	(eq (key-binding "\^?")
	137	'scroll-down)
	138	(eq (key-binding "Q")
	139	'electric-help-exit)
	140	(eq (key-binding "q")
	141	'electric-help-exit))))
	142	(Electric-command-loop
	143	'exit
	144	(function (lambda ()
	145	(let ((min (pos-visible-in-window-p (point-min)))
	146	(max (pos-visible-in-window-p (point-max))))
	147	(cond ((and min max)
	148	(cond (standard "Press Q to exit ")
	149	(neither)
	150	(t (setq neither (substitute-command-keys "Press \\[scroll-up] to exit ")))))
	151	(min
	152	(cond (standard "Press SPC to scroll, Q to exit ")
	153	(up)
	154	(t (setq up (substitute-command-keys "Press \\[scroll-up] to scroll; \\[electric-help-exit] to exit ")))))
	155	(max
	156	(cond (standard "Press DEL to scroll back, Q to exit ")
	157	(down)
	158	(t (setq down (substitute-command-keys "Press \\[scroll-down] to scroll back, \\[scroll-up] to exit ")))))
	159	(t
	160	(cond (standard "Press SPC to scroll, DEL to scroll back, Q to exit ")
	161	(both)
	162	(t (setq both (substitute-command-keys "Press \\[scroll-up] to scroll, \\[scroll-down] to scroll back, \\[electric-help-exit] to exit ")))))))))
	163	t))))
	164
	165
	166	\f
	167	;(defun electric-help-scroll-up (arg)
	168	; ">>>Doc"
	169	; (interactive "P")
	170	; (if (and (null arg) (pos-visible-in-window-p (point-max)))
	171	; (electric-help-exit)
	172	; (scroll-up arg)))
	173
	174	(defun electric-help-exit ()
	175	">>>Doc"
	176	(interactive)
	177	(throw 'exit t))
	178
	179	(defun electric-help-retain ()
d5b9d1d8	180	"Exit `electric-help', retaining the current window/buffer configuration.
a2535589 JA	181	\(The Help buffer will not be selected, but \\[switch-to-buffer-other-window] RET
	182	will select it.)"
	183	(interactive)
	184	(throw 'exit '(retain)))
	185
	186
a2535589 JA	187	(defun electric-help-undefined ()
	188	(interactive)
	189	(error "%s is undefined -- Press %s to exit"
	190	(mapconcat 'single-key-description (this-command-keys) " ")
	191	(if (eq (key-binding "Q") 'electric-help-exit)
	192	"Q"
	193	(substitute-command-keys "\\[electric-help-exit]"))))
	194
	195
	196	;>>> this needs to be hairified (recursive help, anybody?)
	197	(defun electric-help-help ()
	198	(interactive)
	199	(if (and (eq (key-binding "Q") 'electric-help-exit)
	200	(eq (key-binding " ") 'scroll-up)
	201	(eq (key-binding "\^?") 'scroll-down))
	202	(message "SPC scrolls forward, DEL scrolls back, Q exits and burys help buffer")
	203	;; to give something for user to look at while slow substitute-cmd-keys
	204	;; grinds away
	205	(message "Help...")
	206	(message "%s" (substitute-command-keys "\\[scroll-up] scrolls forward, \\[scroll-down] scrolls back, \\[electric-help-exit] exits.")))
	207	(sit-for 2))
	208
	209	\f
	210	(defun electric-helpify (fun)
	211	(let ((name "Help"))
	212	(if (save-window-excursion
	213	;; kludge-o-rama
	214	(let* ((p (symbol-function 'print-help-return-message))
	215	(b (get-buffer name))
	216	(m (buffer-modified-p b)))
	217	(and b (not (get-buffer-window b))
	218	(setq b nil))
	219	(unwind-protect
	220	(progn
	221	(message "%s..." (capitalize (symbol-name fun)))
	222	;; with-output-to-temp-buffer marks the buffer as unmodified.
	223	;; kludging excessively and relying on that as some sort
	224	;; of indication leads to the following abomination...
	225	;;>> This would be doable without such icky kludges if either
	226	;;>> (a) there were a function to read the interactive
	227	;;>> args for a command and return a list of those args.
	228	;;>> (To which one would then just apply the command)
	229	;;>> (The only problem with this is that interactive-p
	230	;;>> would break, but that is such a misfeature in
	231	;;>> any case that I don't care)
	232	;;>> It is easy to do this for emacs-lisp functions;
	233	;;>> the only problem is getting the interactive spec
	234	;;>> for subrs
	235	;;>> (b) there were a function which returned a
	236	;;>> modification-tick for a buffer. One could tell
	237	;;>> whether a buffer had changed by whether the
	238	;;>> modification-tick were different.
	239	;;>> (Presumably there would have to be a way to either
	240	;;>> restore the tick to some previous value, or to
	241	;;>> suspend updating of the tick in order to allow
	242	;;>> things like momentary-string-display)
	243	(and b
	244	(save-excursion
	245	(set-buffer b)
	246	(set-buffer-modified-p t)))
	247	(fset 'print-help-return-message 'ignore)
	248	(call-interactively fun)
	249	(and (get-buffer name)
	250	(get-buffer-window (get-buffer name))
251	(or (not b)
252	(not (eq b (get-buffer name)))
253	(not (buffer-modified-p b)))))
254	(fset 'print-help-return-message p)
255	(and b (buffer-name b)
256	(save-excursion
257	(set-buffer b)
258	(set-buffer-modified-p m))))))
259	(with-electric-help 'ignore name t))))
260
261	\f
262	(defun electric-describe-key ()
263	(interactive)
264	(electric-helpify 'describe-key))
265
266	(defun electric-describe-mode ()
267	(interactive)
268	(electric-helpify 'describe-mode))
269
270	(defun electric-view-lossage ()
271	(interactive)
272	(electric-helpify 'view-lossage))
273
274	;(defun electric-help-for-help ()
275	; "See help-for-help"
276	; (interactive)
277	; )
278
279	(defun electric-describe-function ()
280	(interactive)
281	(electric-helpify 'describe-function))
282
283	(defun electric-describe-variable ()
284	(interactive)
285	(electric-helpify 'describe-variable))
286
287	(defun electric-describe-bindings ()
288	(interactive)
289	(electric-helpify 'describe-bindings))
290
291	(defun electric-describe-syntax ()
292	(interactive)
293	(electric-helpify 'describe-syntax))
294
295	(defun electric-command-apropos ()
296	(interactive)
297	(electric-helpify 'command-apropos))
298
299	;(define-key help-map "a" 'electric-command-apropos)
300
301
a2535589 JA	302	\f
	303	;;;; ehelp-map
	304
	305	(defvar ehelp-map ())
	306	(if ehelp-map
	307	nil
	308	(let ((map (copy-keymap help-map)))
	309	(substitute-key-definition 'describe-key 'electric-describe-key map)
	310	(substitute-key-definition 'describe-mode 'electric-describe-mode map)
	311	(substitute-key-definition 'view-lossage 'electric-view-lossage map)
	312	(substitute-key-definition 'describe-function 'electric-describe-function map)
	313	(substitute-key-definition 'describe-variable 'electric-describe-variable map)
	314	(substitute-key-definition 'describe-bindings 'electric-describe-bindings map)
	315	(substitute-key-definition 'describe-syntax 'electric-describe-syntax map)
	316
	317	(setq ehelp-map map)
	318	(fset 'ehelp-command map)))
	319
	320	;; Do (define-key global-map "\C-h" 'ehelp-command) if you want to win
49116ac0 JB	321
	322	(provide 'ehelp)
	323
c0274f38	324	;;; ehelp.el ends here