--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/lisp/help.el	Mon Aug 13 11:28:15 2007 +0200
@@ -0,0 +1,1434 @@
+;;; help.el --- help commands for XEmacs.
+
+;; Copyright (C) 1985, 1986, 1992-4, 1997 Free Software Foundation, Inc.
+
+;; Maintainer: FSF
+;; Keywords: help, internal, dumped
+
+;; This file is part of XEmacs.
+
+;; XEmacs 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.
+
+;; XEmacs 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 XEmacs; see the file COPYING.  If not, write to the
+;; Free Software Foundation, 59 Temple Place - Suite 330,
+;; Boston, MA 02111-1307, USA.
+
+;;; Synched up with: FSF 19.30.
+
+;;; Commentary:
+
+;; This file is dumped with XEmacs.
+
+;; This code implements XEmacs's on-line help system, the one invoked by
+;;`M-x help-for-help'.
+
+;; 06/11/1997 -- Converted to use char-after instead of broken
+;;  following-char. -slb
+
+;;; Code:
+
+;; Get the macro make-help-screen when this is compiled,
+;; or run interpreted, but not when the compiled code is loaded.
+(eval-when-compile (require 'help-macro))
+
+(defgroup help nil
+  "Support for on-line help systems."
+  :group 'emacs)
+
+(defgroup help-appearance nil
+  "Appearance of help buffers."
+  :group 'help)
+
+(defvar help-map (let ((map (make-sparse-keymap)))
+                   (set-keymap-name map 'help-map)
+                   (set-keymap-prompt
+                     map (purecopy (gettext "(Type ? for further options)")))
+                   map)
+  "Keymap for characters following the Help key.")
+
+;; global-map definitions moved to keydefs.el
+(fset 'help-command help-map)
+
+(define-key help-map (vector help-char) 'help-for-help)
+(define-key help-map "?" 'help-for-help)
+(define-key help-map 'help 'help-for-help)
+(define-key help-map '(f1) 'help-for-help)
+
+(define-key help-map "\C-l" 'describe-copying) ; on \C-c in FSFmacs
+(define-key help-map "\C-d" 'describe-distribution)
+(define-key help-map "\C-w" 'describe-no-warranty)
+(define-key help-map "a" 'hyper-apropos) ; 'command-apropos in FSFmacs
+(define-key help-map "A" 'command-apropos)
+
+(define-key help-map "b" 'describe-bindings)
+(define-key help-map "B" 'describe-beta)
+(define-key help-map "\C-p" 'describe-pointer)
+
+(define-key help-map "C" 'customize)
+(define-key help-map "c" 'describe-key-briefly)
+(define-key help-map "k" 'describe-key)
+
+(define-key help-map "d" 'describe-function)
+(define-key help-map "e" 'describe-last-error)
+(define-key help-map "f" 'describe-function)
+
+(define-key help-map "F" 'xemacs-local-faq)
+
+(define-key help-map "i" 'info)
+(define-key help-map '(control i) 'Info-query)
+;; FSFmacs has Info-goto-emacs-command-node on C-f, no binding
+;; for Info-elisp-ref
+(define-key help-map '(control c) 'Info-goto-emacs-command-node)
+(define-key help-map '(control k) 'Info-goto-emacs-key-command-node)
+(define-key help-map '(control f) 'Info-elisp-ref)
+
+(define-key help-map "l" 'view-lossage)
+
+(define-key help-map "m" 'describe-mode)
+
+(define-key help-map "\C-n" 'view-emacs-news)
+(define-key help-map "n" 'view-emacs-news)
+
+(define-key help-map "p" 'finder-by-keyword)
+
+;; Do this right with an autoload cookie in finder.el.
+;;(autoload 'finder-by-keyword "finder"
+;;  "Find packages matching a given keyword." t)
+
+(define-key help-map "s" 'describe-syntax)
+
+(define-key help-map "t" 'help-with-tutorial)
+
+(define-key help-map "w" 'where-is)
+
+(define-key help-map "v" 'describe-variable)
+
+(if (fboundp 'view-last-error)
+    (define-key help-map "e" 'view-last-error))
+
+
+(define-key help-map "q" 'help-quit)
+
+;#### This stuff was an attempt to have font locking and hyperlinks in the
+;help buffer, but it doesn't really work.  Some of this stuff comes from
+;FSF Emacs; but the FSF Emacs implementation is rather broken, as usual.
+;What needs to happen is this:
+;
+; -- we probably need a "hyperlink mode" from which help-mode is derived.
+; -- this means we probably need multiple inheritance of modes!
+;    Thankfully this is not hard to implement; we already have the
+;    ability for a keymap to have multiple parents.  However, we'd
+;    have to define any multiply-inherited-from modes using a standard
+;    `define-mode' construction instead of manually doing it, because
+;    we don't want each guy calling `kill-all-local-variables' and
+;    messing up the previous one.
+; -- we need to scan the buffer ourselves (not from font-lock, because
+;    the user might not have font-lock enabled) and highlight only
+;    those words that are *documented* functions and variables (and
+;    probably excluding words without dashes in them unless enclosed
+;    in quotes, so that common words like "list" and "point" don't
+;    become hyperlinks.
+; -- we should *not* use font-lock keywords like below.  Instead we
+;    should add the font-lock stuff ourselves during the scanning phase,
+;    if font-lock is enabled in this buffer.
+
+;(defun help-follow-reference (event extent user-data)
+;  (let ((symbol (intern-soft (extent-string extent))))
+;    (cond ((and symbol (fboundp symbol))
+;	   (describe-function symbol))
+;	  ((and symbol (boundp symbol))
+;	   (describe-variable symbol))
+;	  (t nil))))
+
+;(defvar help-font-lock-keywords
+;  (let ((name-char "[-+a-zA-Z0-9_*]") (sym-char "[-+a-zA-Z0-9_:*]"))
+;    (list
+;     ;;
+;     ;; The symbol itself.
+;     (list (concat "\\`\\(" name-char "+\\)\\(:\\)?")
+;	   '(1 (if (match-beginning 2)
+;		   'font-lock-function-name-face
+;		 'font-lock-variable-name-face)
+;	       nil t))
+;     ;;
+;     ;; Words inside `' which tend to be symbol names.
+;     (list (concat "`\\(" sym-char sym-char "+\\)'")
+;	   1 '(prog1
+;		  'font-lock-reference-face
+;		(add-list-mode-item (match-beginning 1)
+;			       (match-end 1)
+;			       nil
+;			       'help-follow-reference))
+;	   t)
+;     ;;
+;     ;; CLisp `:' keywords as references.
+;     (list (concat "\\<:" sym-char "+\\>") 0 'font-lock-reference-face t)))
+;  "Default expressions to highlight in Help mode.")
+
+;(put 'help-mode 'font-lock-defaults '(help-font-lock-keywords))
+
+(define-derived-mode help-mode view-major-mode "Help"
+  "Major mode for viewing help text.
+Entry to this mode runs the normal hook `help-mode-hook'.
+Commands:
+\\{help-mode-map}"
+  )
+
+(define-key help-mode-map "q" 'help-mode-quit)
+(define-key help-mode-map "Q" 'help-mode-bury)
+(define-key help-mode-map "f" 'find-function-at-point)
+(define-key help-mode-map "d" 'describe-function-at-point)
+(define-key help-mode-map "v" 'describe-variable-at-point)
+(define-key help-mode-map "i" 'Info-elisp-ref)
+(define-key help-mode-map "c" 'customize-variable)
+(define-key help-mode-map [tab] 'help-next-symbol)
+(define-key help-mode-map [(shift tab)] 'help-prev-symbol)
+(define-key help-mode-map "n" 'help-next-section)
+(define-key help-mode-map "p" 'help-prev-section)
+
+(defun describe-function-at-point ()
+  "Describe directly the function at point in the other window."
+  (interactive)
+  (let ((symb (function-at-point)))
+    (when symb
+      (describe-function symb))))
+
+(defun describe-variable-at-point ()
+  "Describe directly the variable at point in the other window."
+  (interactive)
+  (let ((symb (variable-at-point)))
+    (when symb
+      (describe-variable symb))))
+
+(defun help-next-symbol ()
+  "Move point to the next quoted symbol."
+  (interactive)
+  (search-forward "`" nil t))
+
+(defun help-prev-symbol ()
+  "Move point to the previous quoted symbol."
+  (interactive)
+  (search-backward "'" nil t))
+
+(defun help-next-section ()
+  "Move point to the next quoted symbol."
+  (interactive)
+  (search-forward-regexp "^\\w+:" nil t))
+
+(defun help-prev-section ()
+  "Move point to the previous quoted symbol."
+  (interactive)
+  (search-backward-regexp "^\\w+:" nil t))
+
+(defun help-mode-bury ()
+  "Bury the help buffer, possibly restoring the previous window configuration."
+  (interactive)
+  (help-mode-quit t))
+
+(defun help-mode-quit (&optional bury)
+  "Exit from help mode, possibly restoring the previous window configuration.
+If the optional argument BURY is non-nil, the help buffer is buried,
+otherwise it is killed."
+  (interactive)
+  (let ((buf (current-buffer)))
+    (cond ((frame-property (selected-frame) 'help-window-config)
+	   (set-window-configuration
+	    (frame-property (selected-frame) 'help-window-config))
+	   (set-frame-property  (selected-frame) 'help-window-config nil))
+	  ((not (one-window-p))
+	   (delete-window)))
+    (if bury
+	(bury-buffer buf)
+      (kill-buffer buf))))
+
+(defun help-quit ()
+  (interactive)
+  nil)
+
+;; This is a grody hack of the same genotype as `advertised-undo'; if the
+;; bindings of Backspace and C-h are the same, we want the menubar to claim
+;; that `info' in invoked with `C-h i', not `BS i'.
+
+(defun deprecated-help-command ()
+  (interactive)
+  (if (eq 'help-command (key-binding "\C-h"))
+      (setq unread-command-event (character-to-event ?\C-h))
+    (help-for-help)))
+
+;;(define-key global-map 'backspace 'deprecated-help-command)
+
+;; This function has been moved to help-nomule.el and mule-help.el.
+;; TUTORIAL arg is XEmacs addition
+;(defun help-with-tutorial (&optional tutorial)
+;  "Select the XEmacs learn-by-doing tutorial.
+;Optional arg TUTORIAL specifies the tutorial file; default is \"TUTORIAL\"."
+;  (interactive)
+;  (if (null tutorial)
+;      (setq tutorial "TUTORIAL"))
+;  (let ((file (expand-file-name (concat "~/" tutorial))))
+;    (delete-other-windows)
+;    (if (get-file-buffer file)
+;	(switch-to-buffer (get-file-buffer file))
+;      (switch-to-buffer (create-file-buffer file))
+;      (setq buffer-file-name file)
+;      (setq default-directory (expand-file-name "~/"))
+;      (setq buffer-auto-save-file-name nil)
+;      (insert-file-contents (expand-file-name tutorial data-directory))
+;      (goto-char (point-min))
+;      (search-forward "\n<<")
+;      (delete-region (point-at-bol) (point-at-eol))
+;      (let ((n (- (window-height (selected-window))
+;		  (count-lines (point-min) (point))
+;		  6)))
+;	(if (< n 12)
+;	    (newline n)
+;	  ;; Some people get confused by the large gap.
+;	  (newline (/ n 2))
+;	  (insert "[Middle of page left blank for didactic purposes.  "
+;		  "Text continues below]")
+;	  (newline (- n (/ n 2)))))
+;      (goto-char (point-min))
+;      (set-buffer-modified-p nil))))
+
+;; used by describe-key, describe-key-briefly, insert-key-binding, etc.
+
+(defun key-or-menu-binding (key &optional menu-flag)
+  "Return the command invoked by KEY.
+Like `key-binding', but handles menu events and toolbar presses correctly.
+KEY is any value returned by `next-command-event'.
+MENU-FLAG is a symbol that should be set to t if KEY is a menu event,
+ or nil otherwise"
+  (let (defn)
+    (and menu-flag (set menu-flag nil))
+    ;; If the key typed was really a menu selection, grab the form out
+    ;; of the event object and intuit the function that would be called,
+    ;; and describe that instead.
+    (if (and (vectorp key) (= 1 (length key))
+	     (or (misc-user-event-p (aref key 0))
+		 (eq (car-safe (aref key 0)) 'menu-selection)))
+	(let ((event (aref key 0)))
+	  (setq defn (if (eventp event)
+			 (list (event-function event) (event-object event))
+		       (cdr event)))
+	  (and menu-flag (set menu-flag t))
+	  (when (eq (car defn) 'eval)
+	    (setq defn (car (cdr defn))))
+	  (when (eq (car-safe defn) 'call-interactively)
+	    (setq defn (car (cdr defn))))
+	  (when (and (consp defn) (null (cdr defn)))
+	    (setq defn (car defn))))
+      ;; else
+      (setq defn (key-binding key)))
+    ;; kludge: if a toolbar button was pressed on, try to find the
+    ;; binding of the toolbar button.
+    (if (and (eq defn 'press-toolbar-button)
+	     (vectorp key)
+	     (button-press-event-p (aref key (1- (length key)))))
+	;; wait for the button release.  We're on shaky ground here ...
+	(let ((event (next-command-event))
+	      button)
+	  (if (and (button-release-event-p event)
+		   (event-over-toolbar-p event)
+		   (eq 'release-and-activate-toolbar-button
+		       (key-binding (vector event)))
+		   (setq button (event-toolbar-button event)))
+	      (toolbar-button-callback button)
+	    ;; if anything went wrong, try returning the binding of
+	    ;; the button-up event, of the original binding
+	    (or (key-or-menu-binding (vector event))
+		defn)))
+      ;; no toolbar kludge
+      defn)
+    ))
+
+(defun describe-key-briefly (key &optional insert)
+  "Print the name of the function KEY invokes.  KEY is a string.
+If INSERT (the prefix arg) is non-nil, insert the message in the buffer."
+  (interactive "kDescribe key briefly: \nP")
+  (let ((standard-output (if insert (current-buffer) t))
+	defn menup)
+    (setq defn (key-or-menu-binding key 'menup))
+    (if (or (null defn) (integerp defn))
+        (princ (format "%s is undefined" (key-description key)))
+      ;; If it's a keyboard macro which trivially invokes another command,
+      ;; document that instead.
+      (if (or (stringp defn) (vectorp defn))
+	  (setq defn (or (key-binding defn)
+			 defn)))
+      (let ((last-event (and (vectorp key)
+			     (aref key (1- (length key))))))
+	(princ (format (cond (insert
+			      "%s (%s)")
+			     ((or (button-press-event-p last-event)
+				  (button-release-event-p last-event))
+			      (gettext "%s at that spot runs the command %s"))
+			     (t
+			      (gettext "%s runs the command %s")))
+		       ;; This used to say 'This menu item' but it
+		       ;; could also be a scrollbar event.  We can't
+		       ;; distinguish at the moment.
+		       (if menup
+			   (if insert "item" "This item")
+			 (key-description key))
+		       (if (symbolp defn) defn (prin1-to-string defn))))))))
+
+;; #### this is a horrible piece of shit function that should
+;; not exist.  In FSF 19.30 this function has gotten three times
+;; as long and has tons and tons of dumb shit checking
+;; special-display-buffer-names and such crap.  I absolutely
+;; refuse to insert that Ebolification here.  I wanted to delete
+;; this function entirely but Mly bitched.
+;;
+;; If your user-land code calls this function, rewrite it to
+;; call with-displaying-help-buffer.
+
+(defun print-help-return-message (&optional function)
+  "Display or return message saying how to restore windows after help command.
+Computes a message and applies the optional argument FUNCTION to it.
+If FUNCTION is nil, applies `message' to it, thus printing it."
+  (and (not (get-buffer-window standard-output))
+       (funcall
+	(or function 'message)
+	(concat
+         (substitute-command-keys
+          (if (one-window-p t)
+              (if pop-up-windows
+                  (gettext "Type \\[delete-other-windows] to remove help window.")
+                (gettext "Type \\[switch-to-buffer] RET to remove help window."))
+   (gettext "Type \\[switch-to-buffer-other-window] RET to restore the other window.")))
+         (substitute-command-keys
+          (gettext "  \\[scroll-other-window] to scroll the help."))))))
+
+(defcustom help-selects-help-window t
+  "*If nil, use the \"old Emacs\" behavior for Help buffers.
+This just displays the buffer in another window, rather than selecting
+the window."
+  :type 'boolean
+  :group 'help-appearance)
+
+(defcustom help-max-help-buffers 10
+  "*Maximum help buffers to allow before they start getting killed.
+If this is a positive integer, before a help buffer is displayed
+by `with-displaying-help-buffer', any excess help buffers which
+are not being displayed are first killed.  Otherwise, if it is
+zero or nil, only one help buffer, \"*Help*\" is ever used."
+  :type '(choice integer (const :tag "None" nil))
+  :group 'help-appearance)
+
+(defvar help-buffer-list nil
+  "List of help buffers used by `help-register-and-maybe-prune-excess'")
+
+(defun help-register-and-maybe-prune-excess (newbuf)
+  "Register use of a help buffer and possibly kill any excess ones."
+  ;; remove new buffer from list
+  (setq help-buffer-list (remove newbuf help-buffer-list))
+  ;; maybe kill excess help buffers
+  (if (and (integerp help-max-help-buffers)
+           (> (length help-buffer-list) help-max-help-buffers))
+      (let ((keep-list nil)
+            (num-kill (- (length help-buffer-list)
+                         help-max-help-buffers)))
+        (while help-buffer-list
+          (let ((buf (car help-buffer-list)))
+            (if (and (or (equal buf newbuf) (get-buffer buf))
+                     (string-match "^*Help" buf)
+                     (save-excursion (set-buffer buf)
+                                     (eq major-mode 'help-mode)))
+                (if (and (>= num-kill (length help-buffer-list))
+                         (not (get-buffer-window buf t t)))
+                    (kill-buffer buf)
+                  (setq keep-list (cons buf keep-list)))))
+          (setq help-buffer-list (cdr help-buffer-list)))
+        (setq help-buffer-list (nreverse keep-list))))
+  ;; push new buffer
+  (setq help-buffer-list (cons newbuf help-buffer-list)))
+
+(defvar help-buffer-prefix-string "Help"
+  "Initial string to use in constructing help buffer names.
+You should never set this directory, only let-bind it.")
+
+(defun help-buffer-name (name)
+  "Return a name for a Help buffer using string NAME for context."
+  (if (and (integerp help-max-help-buffers)
+           (> help-max-help-buffers 0)
+           (stringp name))
+      (if help-buffer-prefix-string
+	  (format "*%s: %s*" help-buffer-prefix-string name)
+	(format "*%s*" name))
+    (format "*%s*" help-buffer-prefix-string)))
+
+;; Use this function for displaying help when C-h something is pressed
+;; or in similar situations.  Do *not* use it when you are displaying
+;; a help message and then prompting for input in the minibuffer --
+;; this macro usually selects the help buffer, which is not what you
+;; want in those situations.
+
+;; #### Should really be a macro to eliminate the requirement of
+;; caller to code a lambda form in THUNK -- mrb
+
+;; #### BEFORE you rush to make this a macro, think about backward
+;; compatibility.  The right way would be to create a macro with
+;; another name (which is a shame, because w-d-h-b is a perfect name
+;; for a macro) that uses with-displaying-help-buffer internally.
+
+(defun with-displaying-help-buffer (thunk &optional name)
+  "Form which makes a help buffer with given NAME and evaluates BODY there.
+The actual name of the buffer is generated by the function `help-buffer-name'."
+  (let* ((winconfig (current-window-configuration))
+	 (was-one-window (one-window-p))
+	 (buffer-name (help-buffer-name name))
+	 (help-not-visible
+	  (not (and (windows-of-buffer buffer-name) ;shortcut
+		    (memq (selected-frame)
+			  (mapcar 'window-frame
+				  (windows-of-buffer buffer-name)))))))
+    (help-register-and-maybe-prune-excess buffer-name)
+    (prog1 (with-output-to-temp-buffer buffer-name
+	     (prog1 (funcall thunk)
+	       (save-excursion
+		 (set-buffer standard-output)
+		 (help-mode))))
+      (let ((helpwin (get-buffer-window buffer-name)))
+	(when helpwin
+	  (with-current-buffer (window-buffer helpwin)
+	    ;; If the *Help* buffer is already displayed on this
+	    ;; frame, don't override the previous configuration
+	    (when help-not-visible
+	      (set-frame-property (selected-frame)
+				  'help-window-config winconfig)))
+	  (when help-selects-help-window
+	    (select-window helpwin))
+	  (cond ((eq helpwin (selected-window))
+		 (display-message 'command
+		   (substitute-command-keys "Type \\[help-mode-quit] to remove help window, \\[scroll-up] to scroll the help.")))
+		(was-one-window
+		 (display-message 'command
+		   (substitute-command-keys "Type \\[delete-other-windows] to remove help window, \\[scroll-other-window] to scroll the help.")))
+		(t
+		 (display-message 'command
+		   (substitute-command-keys "Type \\[switch-to-buffer-other-window] to restore the other window, \\[scroll-other-window] to scroll the help.")))))))))
+
+(defun describe-key (key)
+  "Display documentation of the function invoked by KEY.
+KEY is a string, or vector of events.
+When called interactively, KEY may also be a menu selection."
+  (interactive "kDescribe key: ")
+  (let ((defn (key-or-menu-binding key))
+	(key-string (key-description key)))
+    (if (or (null defn) (integerp defn))
+        (message "%s is undefined" key-string)
+      (with-displaying-help-buffer
+       (lambda ()
+	 (princ key-string)
+	 (princ " runs ")
+	 (if (symbolp defn)
+	     (princ (format "`%s'" defn))
+	   (princ defn))
+	 (princ "\n\n")
+	 (cond ((or (stringp defn) (vectorp defn))
+		(let ((cmd (key-binding defn)))
+		  (if (not cmd)
+		      (princ "a keyboard macro")
+		    (progn
+		      (princ "a keyboard macro which runs the command ")
+		      (princ cmd)
+		      (princ ":\n\n")
+		      (if (documentation cmd) (princ (documentation cmd)))))))
+	       ((and (consp defn) (not (eq 'lambda (car-safe defn))))
+		(let ((describe-function-show-arglist nil))
+		  (describe-function-1 (car defn))))
+	       ((symbolp defn)
+		(describe-function-1 defn))
+	       ((documentation defn)
+		(princ (documentation defn)))
+	       (t
+		(princ "not documented"))))
+       (format "key `%s'" key-string)))))
+
+(defun describe-mode ()
+  "Display documentation of current major mode and minor modes.
+For this to work correctly for a minor mode, the mode's indicator variable
+\(listed in `minor-mode-alist') must also be a function whose documentation
+describes the minor mode."
+  (interactive)
+  (with-displaying-help-buffer
+   (lambda ()
+     ;; XEmacs change: print the major-mode documentation before
+     ;; the minor modes.
+     (princ mode-name)
+     (princ " mode:\n")
+     (princ (documentation major-mode))
+     (princ "\n\n----\n\n")
+     (let ((minor-modes minor-mode-alist))
+       (while minor-modes
+	 (let* ((minor-mode (car (car minor-modes)))
+		(indicator (car (cdr (car minor-modes)))))
+	   ;; Document a minor mode if it is listed in minor-mode-alist,
+	   ;; bound locally in this buffer, non-nil, and has a function
+	   ;; definition.
+	   (if (and (boundp minor-mode)
+		    (symbol-value minor-mode)
+		    (fboundp minor-mode))
+	       (let ((pretty-minor-mode minor-mode))
+		 (if (string-match "-mode\\'" (symbol-name minor-mode))
+		     (setq pretty-minor-mode
+			   (capitalize
+			    (substring (symbol-name minor-mode)
+				       0 (match-beginning 0)))))
+		 (while (and (consp indicator) (extentp (car indicator)))
+		   (setq indicator (cdr indicator)))
+		 (while (and indicator (symbolp indicator))
+		   (setq indicator (symbol-value indicator)))
+		 (princ (format "%s minor mode (indicator%s):\n"
+				pretty-minor-mode indicator))
+		 (princ (documentation minor-mode))
+		 (princ "\n\n----\n\n"))))
+	 (setq minor-modes (cdr minor-modes)))))
+   (format "%s mode" mode-name)))
+
+;; So keyboard macro definitions are documented correctly
+(fset 'defining-kbd-macro (symbol-function 'start-kbd-macro))
+
+(defun describe-distribution ()
+  "Display info on how to obtain the latest version of XEmacs."
+  (interactive)
+  (find-file-read-only
+   (locate-data-file "DISTRIB")))
+
+(defun describe-beta ()
+  "Display info on how to deal with Beta versions of XEmacs."
+  (interactive)
+  (find-file-read-only
+   (locate-data-file "BETA"))
+  (goto-char (point-min)))
+
+(defun describe-copying ()
+  "Display info on how you may redistribute copies of XEmacs."
+  (interactive)
+  (find-file-read-only
+   (locate-data-file "COPYING"))
+  (goto-char (point-min)))
+
+(defun describe-pointer ()
+  "Show a list of all defined mouse buttons, and their definitions."
+  (interactive)
+  (describe-bindings nil t))
+
+(defun describe-project ()
+  "Display info on the GNU project."
+  (interactive)
+  (find-file-read-only
+   (locate-data-file "GNU"))
+  (goto-char (point-min)))
+
+(defun describe-no-warranty ()
+  "Display info on all the kinds of warranty XEmacs does NOT have."
+  (interactive)
+  (describe-copying)
+  (let (case-fold-search)
+    (search-forward "NO WARRANTY")
+    (recenter 0)))
+
+(defun describe-bindings (&optional prefix mouse-only-p)
+  "Show a list of all defined keys, and their definitions.
+The list is put in a buffer, which is displayed.
+If the optional argument PREFIX is supplied, only commands which
+start with that sequence of keys are described.
+If the second argument (prefix arg, interactively) is non-null
+then only the mouse bindings are displayed."
+  (interactive (list nil current-prefix-arg))
+  (with-displaying-help-buffer
+   (lambda ()
+     (describe-bindings-1 prefix mouse-only-p))
+   (format "bindings for %s" major-mode)))
+
+(defun describe-bindings-1 (&optional prefix mouse-only-p)
+  (let ((heading (if mouse-only-p
+            (gettext "button          binding\n------          -------\n")
+            (gettext "key             binding\n---             -------\n")))
+        (buffer (current-buffer))
+        (minor minor-mode-map-alist)
+        (local (current-local-map))
+        (shadow '()))
+    (set-buffer standard-output)
+    (while minor
+      (let ((sym (car (car minor)))
+            (map (cdr (car minor))))
+        (if (symbol-value-in-buffer sym buffer nil)
+            (progn
+              (insert (format "Minor Mode Bindings for `%s':\n"
+                              sym)
+                      heading)
+              (describe-bindings-internal map nil shadow prefix mouse-only-p)
+              (insert "\n")
+              (setq shadow (cons map shadow))))
+        (setq minor (cdr minor))))
+    (if local
+        (progn
+          (insert "Local Bindings:\n" heading)
+          (describe-bindings-internal local nil shadow prefix mouse-only-p)
+          (insert "\n")
+          (setq shadow (cons local shadow))))
+    (insert "Global Bindings:\n" heading)
+    (describe-bindings-internal (current-global-map)
+                                nil shadow prefix mouse-only-p)
+    (when (and prefix function-key-map (not mouse-only-p))
+      (insert "\nFunction key map translations:\n" heading)
+      (describe-bindings-internal function-key-map nil nil
+				  prefix mouse-only-p))
+    (set-buffer buffer)
+    standard-output))
+
+(defun describe-prefix-bindings ()
+  "Describe the bindings of the prefix used to reach this command.
+The prefix described consists of all but the last event
+of the key sequence that ran this command."
+  (interactive)
+  (let* ((key (this-command-keys))
+	 (prefix (make-vector (1- (length key)) nil))
+	 i)
+    (setq i 0)
+    (while (< i (length prefix))
+      (aset prefix i (aref key i))
+      (setq i (1+ i)))
+    (with-displaying-help-buffer
+     (lambda ()
+       (princ "Key bindings starting with ")
+       (princ (key-description prefix))
+       (princ ":\n\n")
+       (describe-bindings-1 prefix nil))
+     (format "%s prefix" (key-description prefix)))))
+
+;; Make C-h after a prefix, when not specifically bound,
+;; run describe-prefix-bindings.
+(setq prefix-help-command 'describe-prefix-bindings)
+
+(defun describe-installation ()
+  "Display a buffer showing information about this XEmacs was compiled."
+  (interactive)
+  (if (and (boundp 'Installation-string)
+	   (stringp Installation-string))
+      (with-displaying-help-buffer
+       (lambda ()
+	 (princ Installation-string))
+       "Installation")
+    (error "No Installation information available.")))
+
+(defun view-emacs-news ()
+  "Display info on recent changes to XEmacs."
+  (interactive)
+  (find-file (locate-data-file "NEWS")))
+
+(defun xemacs-www-page ()
+  "Go to the XEmacs World Wide Web page."
+  (interactive)
+  (if (boundp 'browse-url-browser-function)
+      (funcall browse-url-browser-function "http://www.xemacs.org/")
+    (error "xemacs-www-page requires browse-url")))
+
+(defun xemacs-www-faq ()
+  "View the latest and greatest XEmacs FAQ using the World Wide Web."
+  (interactive)
+  (if (boundp 'browse-url-browser-function)
+      (funcall browse-url-browser-function
+	       "http://www.xemacs.org/faq/index.html")
+    (error "xemacs-www-faq requires browse-url")))
+
+(defun xemacs-local-faq ()
+  "View the local copy of the XEmacs FAQ.
+If you have access to the World Wide Web, you should use `xemacs-www-faq'
+instead, to ensure that you get the most up-to-date information."
+  (interactive)
+  (save-window-excursion
+    (info)
+    (Info-find-node "xemacs-faq" "Top"))
+  (switch-to-buffer "*info*"))
+
+(defcustom view-lossage-key-count 100
+  "*Number of keys `view-lossage' shows.
+The maximum number of available keys is governed by `recent-keys-ring-size'."
+  :type 'integer
+  :group 'help)
+
+(defcustom view-lossage-message-count 100
+  "*Number of minibuffer messages `view-lossage' shows."
+  :type 'integer
+  :group 'help)
+
+(defun print-recent-messages (n)
+  "Print N most recent messages to standard-output, most recent first.
+If N is nil, all messages will be printed."
+  (save-excursion
+    (let ((buffer (get-buffer-create " *Message-Log*"))
+	  oldpoint extent)
+      (goto-char (point-max buffer) buffer)
+      (set-buffer standard-output)
+      (while (and (not (bobp buffer))
+		  (or (null n) (>= (decf n) 0)))
+	(setq oldpoint (point buffer))
+	(setq extent (extent-at oldpoint buffer
+				'message-multiline nil 'before))
+	;; If the message was multiline, move all the way to the
+	;; beginning.
+	(if extent
+	    (goto-char (extent-start-position extent) buffer)
+	  (forward-line -1 buffer))
+	(insert-buffer-substring buffer (point buffer) oldpoint)))))
+
+(defun view-lossage ()
+  "Display recent input keystrokes and recent minibuffer messages.
+The number of keys shown is controlled by `view-lossage-key-count'.
+The number of messages shown is controlled by `view-lossage-message-count'."
+  (interactive)
+  (with-displaying-help-buffer
+   (lambda ()
+     (princ (key-description (recent-keys view-lossage-key-count)))
+     (save-excursion
+       (set-buffer standard-output)
+       (goto-char (point-min))
+       (insert "Recent keystrokes:\n\n")
+       (while (progn (move-to-column 50) (not (eobp)))
+	 (search-forward " " nil t)
+	 (insert "\n")))
+     ;; XEmacs addition: copy the messages from " *Message-Log*",
+     ;; reversing their order and handling multiline messages
+     ;; correctly.
+     (princ "\n\n\nRecent minibuffer messages (most recent first):\n\n")
+     (print-recent-messages view-lossage-message-count))
+   "lossage"))
+
+(define-function 'help 'help-for-help)
+
+(make-help-screen help-for-help
+  "A B C F I K L M N P S T V W C-c C-d C-f C-i C-k C-n C-w;  ? for more help:"
+  "Type a Help option:
+\(Use SPC or DEL to scroll through this text.  Type \\<help-map>\\[help-quit] to exit the Help command.)
+
+\\[hyper-apropos]	Type a substring; it shows a hypertext list of
+        functions and variables that contain that substring.
+	See also the `apropos' command.
+\\[command-apropos]	Type a substring; it shows a list of commands
+        (interactively callable functions) that contain that substring.
+\\[describe-bindings]	Table of all key bindings.
+\\[describe-key-briefly]	Type a command key sequence;
+        it displays the function name that sequence runs.
+\\[customize]	Customize Emacs options.
+\\[Info-goto-emacs-command-node]	Type a function name; it displays the Info node for that command.
+\\[describe-function]	Type a function name; it shows its documentation.
+\\[Info-elisp-ref]	Type a function name; it jumps to the full documentation
+	in the XEmacs Lisp Programmer's Manual.
+\\[xemacs-local-faq]	Local copy of the XEmacs FAQ.
+\\[info]	Info documentation reader.
+\\[Info-query]	Type an Info file name; it displays it in Info reader.
+\\[describe-key]	Type a command key sequence;
+        it displays the documentation for the command bound to that key.
+\\[Info-goto-emacs-key-command-node]	Type a command key sequence;
+        it displays the Info node for the command bound to that key.
+\\[view-lossage]	Recent input keystrokes and minibuffer messages.
+\\[describe-mode]	Documentation of current major and minor modes.
+\\[view-emacs-news]	News of recent XEmacs changes.
+\\[finder-by-keyword]	Type a topic keyword; it finds matching packages.
+\\[describe-pointer]	Table of all mouse-button bindings.
+\\[describe-syntax]	Contents of syntax table with explanations.
+\\[help-with-tutorial]	XEmacs learn-by-doing tutorial.
+\\[describe-variable]	Type a variable name; it displays its documentation and value.
+\\[where-is]	Type a command name; it displays which keystrokes invoke that command.
+\\[describe-distribution]	XEmacs ordering information.
+\\[describe-no-warranty]	Information on absence of warranty for XEmacs.
+\\[describe-copying]	XEmacs copying permission (General Public License)."
+  help-map)
+
+(defmacro with-syntax-table (syntab &rest body)
+  "Evaluate BODY with the syntax-table SYNTAB"
+  `(let ((stab (syntax-table)))
+     (unwind-protect
+	 (progn
+	   (set-syntax-table (copy-syntax-table ,syntab))
+	   ,@body)
+       (set-syntax-table stab))))
+(put 'with-syntax-table 'lisp-indent-function 1)
+(put 'with-syntax-table 'edebug-form-spec '(form body))
+
+(defun function-called-at-point ()
+  "Return the function which is called by the list containing point.
+If that gives no function, return the function whose name is around point.
+If that doesn't give a function, return nil."
+  (or (ignore-errors
+	(save-excursion
+	  (save-restriction
+	    (narrow-to-region (max (point-min) (- (point) 1000))
+			      (point-max))
+	    (backward-up-list 1)
+	    (forward-char 1)
+	    (let (obj)
+	      (setq obj (read (current-buffer)))
+	      (and (symbolp obj) (fboundp obj) obj)))))
+      (ignore-errors
+	(with-syntax-table emacs-lisp-mode-syntax-table
+	  (save-excursion
+	    (or (not (zerop (skip-syntax-backward "_w")))
+		(eq (char-syntax (char-after (point))) ?w)
+		(eq (char-syntax (char-after (point))) ?_)
+		(forward-sexp -1))
+	    (skip-chars-forward "`'")
+	    (let ((obj (read (current-buffer))))
+	      (and (symbolp obj) (fboundp obj) obj)))))))
+
+(defun function-at-point ()
+  "Return the function whose name is around point.
+If that gives no function, return the function which is called by the
+list containing point.  If that doesn't give a function, return nil."
+  (or (ignore-errors
+	(with-syntax-table emacs-lisp-mode-syntax-table
+	  (save-excursion
+	    (or (not (zerop (skip-syntax-backward "_w")))
+		(eq (char-syntax (char-after (point))) ?w)
+		(eq (char-syntax (char-after (point))) ?_)
+		(forward-sexp -1))
+	    (skip-chars-forward "`'")
+	    (let ((obj (read (current-buffer))))
+	      (and (symbolp obj) (fboundp obj) obj)))))
+      (ignore-errors
+	(save-excursion
+	  (save-restriction
+	    (narrow-to-region (max (point-min) (- (point) 1000))
+			      (point-max))
+	    (backward-up-list 1)
+	    (forward-char 1)
+	    (let (obj)
+	      (setq obj (read (current-buffer)))
+	      (and (symbolp obj) (fboundp obj) obj)))))))
+
+;; Default to nil for the non-hackers?  Not until we find a way to
+;; distinguish hackers from non-hackers automatically!
+(defcustom describe-function-show-arglist t
+  "*If non-nil, describe-function will show its arglist,
+unless the function is autoloaded."
+  :type 'boolean
+  :group 'help-appearance)
+
+(defun describe-symbol-find-file (symbol)
+  (loop for (file . load-data) in load-history
+    do (when (memq symbol load-data)
+	 (return file))))
+
+(define-obsolete-function-alias
+  'describe-function-find-file
+  'describe-symbol-find-file)
+
+(defun describe-function (function)
+  "Display the full documentation of FUNCTION (a symbol).
+When run interactively, it defaults to any function found by
+`function-at-point'."
+  (interactive
+    (let* ((fn (function-at-point))
+           (val (let ((enable-recursive-minibuffers t))
+                  (completing-read
+                    (if fn
+                        (format (gettext "Describe function (default %s): ")
+				fn)
+                        (gettext "Describe function: "))
+                    obarray 'fboundp t nil 'function-history))))
+      (list (if (equal val "") fn (intern val)))))
+  (with-displaying-help-buffer
+   (lambda ()
+     (describe-function-1 function)
+     ;; Return the text we displayed.
+     (buffer-string nil nil standard-output))
+    (format "function `%s'" function)))
+
+(defun function-obsolete-p (function)
+  "Return non-nil if FUNCTION is obsolete."
+  (not (null (get function 'byte-obsolete-info))))
+
+(defun function-obsoleteness-doc (function)
+  "If FUNCTION is obsolete, return a string describing this."
+  (let ((obsolete (get function 'byte-obsolete-info)))
+    (if obsolete
+	(format "Obsolete; %s"
+		(if (stringp (car obsolete))
+		    (car obsolete)
+		  (format "use `%s' instead." (car obsolete)))))))
+
+(defun function-compatible-p (function)
+  "Return non-nil if FUNCTION is present for Emacs compatibility."
+  (not (null (get function 'byte-compatible-info))))
+
+(defun function-compatibility-doc (function)
+  "If FUNCTION is Emacs compatible, return a string describing this."
+  (let ((compatible (get function 'byte-compatible-info)))
+    (if compatible
+	(format "Emacs Compatible; %s"
+		(if (stringp (car compatible))
+		    (car compatible)
+		  (format "use `%s' instead." (car compatible)))))))
+
+;Here are all the possibilities below spelled out, for the benefit
+;of the I18N3 snarfer.
+;
+;(gettext "a built-in function")
+;(gettext "an interactive built-in function")
+;(gettext "a built-in macro")
+;(gettext "an interactive built-in macro")
+;(gettext "a compiled Lisp function")
+;(gettext "an interactive compiled Lisp function")
+;(gettext "a compiled Lisp macro")
+;(gettext "an interactive compiled Lisp macro")
+;(gettext "a Lisp function")
+;(gettext "an interactive Lisp function")
+;(gettext "a Lisp macro")
+;(gettext "an interactive Lisp macro")
+;(gettext "a mocklisp function")
+;(gettext "an interactive mocklisp function")
+;(gettext "a mocklisp macro")
+;(gettext "an interactive mocklisp macro")
+;(gettext "an autoloaded Lisp function")
+;(gettext "an interactive autoloaded Lisp function")
+;(gettext "an autoloaded Lisp macro")
+;(gettext "an interactive autoloaded Lisp macro")
+
+;; taken out of `describe-function-1'
+(defun function-arglist (function)
+  "Return a string giving the argument list of FUNCTION.
+For example:
+
+	(function-arglist 'function-arglist)
+	=> (function-arglist FUNCTION)
+
+This function is used by `describe-function-1' to list function
+arguments in the standard Lisp style."
+  (let* ((fndef (indirect-function function))
+	 (arglist
+	 (cond ((compiled-function-p fndef)
+		(compiled-function-arglist fndef))
+	       ((eq (car-safe fndef) 'lambda)
+		(nth 1 fndef))
+	       ((subrp fndef)
+		(let* ((doc (documentation function))
+		       (args (and (string-match
+				   "[\n\t ]*\narguments: ?(\\(.*\\))\n?\\'"
+				   doc)
+				  (match-string 1 doc))))
+		  ;; If there are no arguments documented for the
+		  ;; subr, rather don't print anything.
+		  (cond ((null args) t)
+			((equal args "") nil)
+			(args))))
+	       (t t))))
+    (cond ((listp arglist)
+	   (prin1-to-string
+	    (cons function (mapcar (lambda (arg)
+				     (if (memq arg '(&optional &rest))
+					 arg
+				       (intern (upcase (symbol-name arg)))))
+				   arglist))
+	    t))
+	  ((stringp arglist)
+	   (format "(%s %s)" function arglist)))))
+
+(defun function-documentation (function &optional strip-arglist)
+  "Return a string giving the documentation for FUNCTION, if any.
+If the optional argument STRIP-ARGLIST is non-nil, remove the arglist
+part of the documentation of internal subroutines."
+  (let ((doc (condition-case nil
+		 (or (documentation function)
+		     (gettext "not documented"))
+	       (void-function ""))))
+    (if (and strip-arglist
+	     (string-match "[\n\t ]*\narguments: ?(\\(.*\\))\n?\\'" doc))
+	(setq doc (substring doc 0 (match-beginning 0))))
+    doc))
+
+(defun describe-function-1 (function &optional nodoc)
+  "This function does the work for `describe-function'."
+  (princ (format "`%s' is " function))
+  (let* ((def function)
+	 aliases file-name autoload-file kbd-macro-p fndef macrop)
+    (while (and (symbolp def) (fboundp def))
+      (when (not (eq def function))
+	(setq aliases
+	      (if aliases
+		  ;; I18N3 Need gettext due to concat
+		  (concat aliases
+			  (format
+			   "\n     which is an alias for `%s', "
+			   (symbol-name def)))
+		(format "an alias for `%s', " (symbol-name def)))))
+      (setq def (symbol-function def)))
+    (if (and (fboundp 'compiled-function-annotation)
+	     (compiled-function-p def))
+	(setq file-name (compiled-function-annotation def)))
+    (if (eq 'macro (car-safe def))
+	(setq fndef (cdr def)
+	      file-name (and (compiled-function-p (cdr def))
+			     (fboundp 'compiled-function-annotation)
+			     (compiled-function-annotation (cdr def)))
+	      macrop t)
+      (setq fndef def))
+    (if aliases (princ aliases))
+    (let ((int #'(lambda (string an-p macro-p)
+		   (princ (format
+			   (gettext (concat
+				     (cond ((commandp def)
+					    "an interactive ")
+					   (an-p "an ")
+					   (t "a "))
+				     "%s"
+				     (if macro-p " macro" " function")))
+			   string)))))
+      (cond ((or (stringp def) (vectorp def))
+             (princ "a keyboard macro.")
+	     (setq kbd-macro-p t))
+            ((subrp fndef)
+             (funcall int "built-in" nil macrop))
+            ((compiled-function-p fndef)
+             (funcall int "compiled Lisp" nil macrop))
+            ((eq (car-safe fndef) 'lambda)
+             (funcall int "Lisp" nil macrop))
+            ((eq (car-safe fndef) 'mocklisp)
+             (funcall int "mocklisp" nil macrop))
+            ((eq (car-safe def) 'autoload)
+	     (setq autoload-file (elt def 1))
+	     (funcall int "autoloaded Lisp" t (elt def 4)))
+	    ((and (symbolp def) (not (fboundp def)))
+	     (princ "a symbol with a void (unbound) function definition."))
+            (t
+             nil)))
+    (princ "\n")
+    (if autoload-file
+	(princ (format "  -- autoloads from \"%s\"\n" autoload-file)))
+    (or file-name
+	(setq file-name (describe-symbol-find-file function)))
+    (if file-name
+	(princ (format "  -- loaded from \"%s\"\n" file-name)))
+;;     (terpri)
+    (if describe-function-show-arglist
+	(let ((arglist (function-arglist function)))
+	  (when arglist
+	    (princ arglist)
+	    (terpri))))
+    (terpri)
+    (cond (kbd-macro-p
+	   (princ "These characters are executed:\n\n\t")
+	   (princ (key-description def))
+	   (cond ((setq def (key-binding def))
+		  (princ (format "\n\nwhich executes the command `%s'.\n\n"
+				 def))
+		  (describe-function-1 def))))
+	  (nodoc nil)
+	  (t
+	   ;; tell the user about obsoleteness.
+	   ;; If the function is obsolete and is aliased, don't
+	   ;; even bother to report the documentation, as a further
+	   ;; encouragement to use the new function.
+	   (let ((obsolete (function-obsoleteness-doc function))
+		 (compatible (function-compatibility-doc function)))
+	     (when obsolete
+	       (princ obsolete)
+	       (terpri)
+	       (terpri))
+	     (when compatible
+	       (princ compatible)
+	       (terpri)
+	       (terpri))
+	     (unless (and obsolete aliases)
+	       (let ((doc (function-documentation function t)))
+		 (princ "Documentation:\n")
+		 (princ doc)
+		 (unless (or (equal doc "")
+			     (eq ?\n (aref doc (1- (length doc)))))
+		   (terpri)))))))))
+
+
+;;; [Obnoxious, whining people who complain very LOUDLY on Usenet
+;;; are binding this to keys.]
+(defun describe-function-arglist (function)
+  (interactive (list (or (function-at-point)
+			 (error "no function call at point"))))
+  (message nil)
+  (message (function-arglist function)))
+
+
+(defun variable-at-point ()
+  (ignore-errors
+    (with-syntax-table emacs-lisp-mode-syntax-table
+      (save-excursion
+	(or (not (zerop (skip-syntax-backward "_w")))
+	    (eq (char-syntax (char-after (point))) ?w)
+	    (eq (char-syntax (char-after (point))) ?_)
+	    (forward-sexp -1))
+	(skip-chars-forward "'")
+	(let ((obj (read (current-buffer))))
+	  (and (symbolp obj) (boundp obj) obj))))))
+
+(defun variable-obsolete-p (variable)
+  "Return non-nil if VARIABLE is obsolete."
+  (not (null (get variable 'byte-obsolete-variable))))
+
+(defun variable-obsoleteness-doc (variable)
+  "If VARIABLE is obsolete, return a string describing this."
+  (let ((obsolete (get variable 'byte-obsolete-variable)))
+    (if obsolete
+	(format "Obsolete; %s"
+		(if (stringp obsolete)
+		    obsolete
+		  (format "use `%s' instead." obsolete))))))
+
+(defun variable-compatible-p (variable)
+  "Return non-nil if VARIABLE is Emacs compatible."
+  (not (null (get variable 'byte-compatible-variable))))
+
+(defun variable-compatibility-doc (variable)
+  "If VARIABLE is Emacs compatible, return a string describing this."
+  (let ((compatible (get variable 'byte-compatible-variable)))
+    (if compatible
+	(format "Emacs Compatible; %s"
+		(if (stringp compatible)
+		    compatible
+		  (format "use `%s' instead." compatible))))))
+
+(defun built-in-variable-doc (variable)
+  "Return a string describing whether VARIABLE is built-in."
+  (let ((type (built-in-variable-type variable)))
+    (case type
+      (integer "a built-in integer variable")
+      (const-integer "a built-in constant integer variable")
+      (boolean "a built-in boolean variable")
+      (const-boolean "a built-in constant boolean variable")
+      (object "a simple built-in variable")
+      (const-object "a simple built-in constant variable")
+      (const-specifier "a built-in constant specifier variable")
+      (current-buffer "a built-in buffer-local variable")
+      (const-current-buffer "a built-in constant buffer-local variable")
+      (default-buffer "a built-in default buffer-local variable")
+      (selected-console "a built-in console-local variable")
+      (const-selected-console "a built-in constant console-local variable")
+      (default-console "a built-in default console-local variable")
+      (t
+       (if type "an unknown type of built-in variable?"
+	 "a variable declared in Lisp")))))
+
+(defun describe-variable (variable)
+  "Display the full documentation of VARIABLE (a symbol)."
+  (interactive
+   (let* ((v (variable-at-point))
+          (val (let ((enable-recursive-minibuffers t))
+                 (completing-read
+                   (if v
+                       (format "Describe variable (default %s): " v)
+                       (gettext "Describe variable: "))
+                   obarray 'boundp t nil 'variable-history))))
+     (list (if (equal val "") v (intern val)))))
+  (with-displaying-help-buffer
+   (lambda ()
+     (let ((origvar variable)
+	   aliases)
+       (let ((print-escape-newlines t))
+	 (princ (format "`%s' is " (symbol-name variable)))
+	 (while (variable-alias variable)
+	   (let ((newvar (variable-alias variable)))
+	     (if aliases
+		 ;; I18N3 Need gettext due to concat
+		 (setq aliases
+		       (concat aliases
+			       (format "\n     which is an alias for `%s',"
+				       (symbol-name newvar))))
+	       (setq aliases
+		     (format "an alias for `%s',"
+			     (symbol-name newvar))))
+	     (setq variable newvar)))
+	 (if aliases
+	     (princ (format "%s" aliases)))
+	 (princ (built-in-variable-doc variable))
+	 (princ ".\n")
+	 (let ((file-name (describe-symbol-find-file variable)))
+	   (if file-name
+	       (princ (format "  -- loaded from \"%s\"\n" file-name))))
+	 (princ "\nValue: ")
+	 (if (not (boundp variable))
+	     (princ "void\n")
+	   (prin1 (symbol-value variable))
+	   (terpri))
+	 (terpri)
+	 (cond ((local-variable-p variable (current-buffer))
+		(let* ((void (cons nil nil))
+		       (def (condition-case nil
+				(default-value variable)
+			      (error void))))
+		  (princ "This value is specific to the current buffer.\n")
+		  (if (local-variable-p variable nil)
+		      (princ "(Its value is local to each buffer.)\n"))
+		  (terpri)
+		  (if (if (eq def void)
+			  (boundp variable)
+			(not (eq (symbol-value variable) def)))
+		      ;; #### I18N3 doesn't localize properly!
+		      (progn (princ "Default-value: ")
+			     (if (eq def void)
+				 (princ "void\n")
+			       (prin1 def)
+			       (terpri))
+			     (terpri)))))
+	       ((local-variable-p variable (current-buffer) t)
+		(princ "Setting it would make its value buffer-local.\n\n"))))
+       (princ "Documentation:")
+       (terpri)
+       (let ((doc (documentation-property variable 'variable-documentation))
+	     (obsolete (variable-obsoleteness-doc origvar))
+	     (compatible (variable-compatibility-doc origvar)))
+	 (when obsolete
+	   (princ obsolete)
+	   (terpri)
+	   (terpri))
+	 (when compatible
+	   (princ compatible)
+	   (terpri)
+	   (terpri))
+	 ;; don't bother to print anything if variable is obsolete and aliased.
+	 (when (or (not obsolete) (not aliases))
+	   (if doc
+	       ;; note: documentation-property calls substitute-command-keys.
+	       (princ doc)
+	     (princ "not documented as a variable."))))
+       (terpri)))
+   (format "variable `%s'" variable)))
+
+(defun sorted-key-descriptions (keys &optional separator)
+  "Sort and separate the key descriptions for KEYS.
+The sorting is done by length (shortest bindings first), and the bindings
+are separated with SEPARATOR (\", \" by default)."
+  (mapconcat 'key-description
+	     (sort keys #'(lambda (x y)
+			    (< (length x) (length y))))
+	     (or separator ", ")))
+
+(defun where-is (definition &optional insert)
+  "Print message listing key sequences that invoke specified command.
+Argument is a command definition, usually a symbol with a function definition.
+When run interactively, it defaults to any function found by
+`function-at-point'.
+If INSERT (the prefix arg) is non-nil, insert the message in the buffer."
+  (interactive
+   (let ((fn (function-at-point))
+	 (enable-recursive-minibuffers t)
+	 val)
+     (setq val (read-command
+		(if fn (format "Where is command (default %s): " fn)
+		  "Where is command: ")))
+     (list (if (equal (symbol-name val) "")
+	       fn val)
+	   current-prefix-arg)))
+  (let ((keys (where-is-internal definition)))
+    (if keys
+	(if insert
+	    (princ (format "%s (%s)" (sorted-key-descriptions keys)
+			   definition) (current-buffer))
+	  (message "%s is on %s" definition (sorted-key-descriptions keys)))
+      (if insert
+	  (princ (format (if (commandp definition) "M-x %s RET"
+			   "M-: (%s ...)") definition) (current-buffer))
+	(message "%s is not on any keys" definition))))
+  nil)
+
+;; `locate-library' moved to "packages.el"
+
+
+;; Functions ported from C into Lisp in XEmacs
+
+(defun describe-syntax ()
+  "Describe the syntax specifications in the syntax table.
+The descriptions are inserted in a buffer, which is then displayed."
+  (interactive)
+  (with-displaying-help-buffer
+   (lambda ()
+     ;; defined in syntax.el
+     (describe-syntax-table (syntax-table) standard-output))
+   (format "syntax-table for %s" major-mode)))
+
+(defun list-processes ()
+  "Display a list of all processes.
+\(Any processes listed as Exited or Signaled are actually eliminated
+after the listing is made.)"
+  (interactive)
+  (with-output-to-temp-buffer "*Process List*"
+    (set-buffer standard-output)
+    (buffer-disable-undo standard-output)
+    (make-local-variable 'truncate-lines)
+    (setq truncate-lines t)
+    ;;      00000000001111111111222222222233333333334444444444
+    ;;      01234567890123456789012345678901234567890123456789
+    ;; rewritten for I18N3.  This one should stay rewritten
+    ;; so that the dashes will line up properly.
+    (princ "Proc         Status   Buffer         Tty         Command\n----         ------   ------         ---         -------\n")
+    (let ((tail (process-list)))
+      (while tail
+	(let* ((p (car tail))
+	       (pid (process-id p))
+	       (s (process-status p)))
+	  (setq tail (cdr tail))
+	  (princ (format "%-13s" (process-name p)))
+	  (princ s)
+	  (if (and (eq s 'exit) (/= (process-exit-status p) 0))
+	      (princ (format " %d" (process-exit-status p))))
+	  (if (memq s '(signal exit closed))
+	      ;; Do delete-exited-processes' work
+	      (delete-process p))
+	  (indent-to 22 1)		;####
+	  (let ((b (process-buffer p)))
+	    (cond ((not b)
+		   (princ "(none)"))
+		  ((not (buffer-name b))
+		   (princ "(killed)"))
+		  (t
+		   (princ (buffer-name b)))))
+	  (indent-to 37 1)		;####
+	  (let ((tn (process-tty-name p)))
+	    (cond ((not tn)
+		   (princ "(none)"))
+		  (t
+		   (princ (format "%s" tn)))))
+	  (indent-to 49 1)		;####
+	  (if (not (integerp pid))
+	      (progn
+		(princ "network stream connection ")
+		(princ (car pid))
+		(princ "@")
+		(princ (cdr pid)))
+	    (let ((cmd (process-command p)))
+	      (while cmd
+		(princ (car cmd))
+		(setq cmd (cdr cmd))
+		(if cmd (princ " ")))))
+	  (terpri))))))
+
+;; Stop gap for 21.0 untill we do help-char etc properly.
+(defun help-keymap-with-help-key (keymap form)
+  "Return a copy of KEYMAP with an help-key binding according to help-char
+ invoking FORM like help-form.  An existing binding is not overridden.
+ If FORM is nil then no binding is made."
+  (let ((map (copy-keymap keymap))
+	(key (if (characterp help-char)
+		 (vector (character-to-event help-char))
+	       help-char)))
+    (when (and form key (not (lookup-key map key)))
+      (define-key map key
+	`(lambda () (interactive) (help-print-help-form ,form))))
+    map))
+
+(defun help-print-help-form (form)
+  (let ((string (eval form)))
+    (if (stringp string)
+	(with-displaying-help-buffer
+	 (insert string)))))
+
+
+;;; help.el ends here