--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/lisp/emulators/tpu-edt.el	Mon Aug 13 08:45:50 2007 +0200
@@ -0,0 +1,2165 @@
+;; Copyright (C) 1993 Free Software Foundation, Inc.
+
+;; Author: Rob Riepel <riepel@networking.stanford.edu>
+;; Maintainer: Rob Riepel <riepel@networking.stanford.edu>
+;; Version: 3.2
+;; Keywords: emulations
+
+;; Patched for XEmacs support of zmacs regions by:
+;; R. Kevin Oberman <oberman@es.net>
+
+;; 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.
+
+;;; Code:
+
+
+;;;
+;;;  Revision and Version Information
+;;;
+(defconst tpu-version "3.2" "TPU-edt version number.")
+
+
+;;;
+;;;  User Configurable Variables
+;;;
+(defconst tpu-have-ispell t
+  "*If non-nil (default), TPU-edt uses ispell for spell checking.")
+
+(defconst tpu-kill-buffers-silently nil
+  "*If non-nil, TPU-edt kills modified buffers without asking.")
+
+(defvar tpu-percent-scroll 75
+  "*Percentage of the screen to scroll for next/previous screen commands.")
+
+(defvar tpu-pan-columns 16
+  "*Number of columns the tpu-pan functions scroll left or right.")
+
+
+;;;
+;;;  Emacs version identifiers - currently referenced by
+;;;
+;;;     o tpu-mark              o tpu-set-mark
+;;;     o tpu-string-prompt     o tpu-regexp-prompt
+;;;     o tpu-edt-on            o tpu-load-xkeys
+;;;     o tpu-update-mode-line  o mode line section
+;;;
+(defconst tpu-emacs19-p (not (string-lessp emacs-version "19"))
+  "Non-NIL if we are running XEmacs or GNU Emacs version 19.")
+
+(defconst tpu-gnu-emacs18-p (not tpu-emacs19-p)
+  "Non-NIL if we are running GNU Emacs version 18.")
+
+(defconst tpu-xemacs-emacs19-p
+  (and tpu-emacs19-p (string-match "XEmacs" emacs-version))
+  "Non-NIL if we are running XEmacs version 19.")
+
+(defconst tpu-gnu-emacs19-p (and tpu-emacs19-p (not tpu-xemacs-emacs19-p))
+  "Non-NIL if we are running GNU Emacs version 19.")
+
+
+;;;
+;;;  Global Keymaps
+;;;
+(defvar CSI-map (make-sparse-keymap)
+  "Maps the CSI function keys on the VT100 keyboard.
+CSI is DEC's name for the sequence <ESC>[.")
+
+(defvar SS3-map (make-sparse-keymap)
+  "Maps the SS3 function keys on the VT100 keyboard.
+SS3 is DEC's name for the sequence <ESC>O.")
+
+(defvar GOLD-map (make-keymap)
+  "Maps the function keys on the VT100 keyboard preceeded by PF1.
+GOLD is the ASCII 7-bit escape sequence <ESC>OP.")
+
+(defvar GOLD-CSI-map (make-sparse-keymap)
+  "Maps the function keys on the VT100 keyboard preceeded by GOLD-CSI.")
+
+(defvar GOLD-SS3-map (make-sparse-keymap)
+  "Maps the function keys on the VT100 keyboard preceeded by GOLD-SS3.")
+
+(defvar tpu-global-map nil "TPU-edt global keymap.")
+(defvar tpu-original-global-map (copy-keymap global-map)
+  "Original global keymap.")
+
+(and tpu-xemacs-emacs19-p
+     (defvar minibuffer-local-ns-map (make-sparse-keymap)
+       "Hack to give XEmacs the same maps as GNU emacs."))
+
+
+;;;
+;;;  Global Variables
+;;;
+(defvar tpu-edt-mode nil
+  "If non-nil, TPU-edt mode is active.")
+
+(defvar tpu-last-replaced-text ""
+  "Last text deleted by a TPU-edt replace command.")
+(defvar tpu-last-deleted-region ""
+  "Last text deleted by a TPU-edt remove command.")
+(defvar tpu-last-deleted-lines ""
+  "Last text deleted by a TPU-edt line-delete command.")
+(defvar tpu-last-deleted-words ""
+  "Last text deleted by a TPU-edt word-delete command.")
+(defvar tpu-last-deleted-char ""
+  "Last character deleted by a TPU-edt character-delete command.")
+
+(defvar tpu-searching-forward t
+  "If non-nil, TPU-edt is searching in the forward direction.")
+(defvar tpu-search-last-string ""
+  "Last text searched for by the TPU-edt search commands.")
+
+(defvar tpu-regexp-p nil
+  "If non-nil, TPU-edt uses regexp search and replace routines.")
+(defvar tpu-rectangular-p nil
+  "If non-nil, TPU-edt removes and inserts rectangles.")
+(defvar tpu-advance t
+  "True when TPU-edt is operating in the forward direction.")
+(defvar tpu-reverse nil
+  "True when TPU-edt is operating in the backward direction.")
+(defvar tpu-control-keys t
+  "If non-nil, control keys are set to perform TPU functions.")
+(defvar tpu-xkeys-file nil
+  "File containing TPU-edt X key map.")
+
+(defvar tpu-rectangle-string nil
+  "Mode line string to identify rectangular mode.")
+(defvar tpu-direction-string nil
+  "Mode line string to identify current direction.")
+
+(defvar tpu-add-at-bol-hist nil
+  "History variable for tpu-edt-add-at-bol function.")
+(defvar tpu-add-at-eol-hist nil
+  "History variable for tpu-edt-add-at-eol function.")
+(defvar tpu-regexp-prompt-hist  nil
+  "History variable for search and replace functions.")
+
+
+;;;
+;;;  Buffer Local Variables
+;;;
+(defvar tpu-newline-and-indent-p nil
+  "If non-nil, Return produces a newline and indents.")
+(make-variable-buffer-local 'tpu-newline-and-indent-p)
+
+(defvar tpu-newline-and-indent-string nil
+  "Mode line string to identify AutoIndent mode.")
+(make-variable-buffer-local 'tpu-newline-and-indent-string)
+
+(defvar tpu-saved-delete-func nil
+  "Saved value of the delete key.")
+(make-variable-buffer-local 'tpu-saved-delete-func)
+
+(defvar tpu-buffer-local-map nil
+  "TPU-edt buffer local key map.")
+(make-variable-buffer-local 'tpu-buffer-local-map)
+
+
+;;;
+;;;  Mode Line - Modify the mode line to show the following
+;;;
+;;;     o  If the mark is set.
+;;;     o  Direction of motion.
+;;;     o  Active rectangle mode.
+;;;
+(defvar tpu-original-mode-line mode-line-format)
+(defvar tpu-original-mm-alist minor-mode-alist)
+
+(defvar tpu-mark-flag " ")
+(make-variable-buffer-local 'tpu-mark-flag)
+
+(defun tpu-set-mode-line (for-tpu)
+  "Set the mode for TPU-edt, or reset it to default Emacs."
+  (cond ((not for-tpu)
+	 (setq mode-line-format tpu-original-mode-line)
+	 (setq minor-mode-alist tpu-original-mm-alist))
+	(t
+	 (setq-default mode-line-format
+		       (list (purecopy "")
+			     'mode-line-modified
+			     'mode-line-buffer-identification
+			     (purecopy "  ")
+			     'global-mode-string
+			     (purecopy "  ")
+			     'tpu-mark-flag
+			     (purecopy " %[(")
+			     'mode-name 'minor-mode-alist "%n" 'mode-line-process
+			     (purecopy ")%]----")
+			     (purecopy '(-3 . "%p"))
+			     (purecopy "-%-")))
+	 (or (assq 'tpu-newline-and-indent-p minor-mode-alist)
+	     (setq minor-mode-alist
+		   (cons '(tpu-newline-and-indent-p
+			   tpu-newline-and-indent-string)
+			 minor-mode-alist)))
+	 (or (assq 'tpu-rectangular-p minor-mode-alist)
+	     (setq minor-mode-alist
+		   (cons '(tpu-rectangular-p tpu-rectangle-string)
+			 minor-mode-alist)))
+	 (or (assq 'tpu-direction-string minor-mode-alist)
+	     (setq minor-mode-alist
+		   (cons '(tpu-direction-string tpu-direction-string)
+			 minor-mode-alist))))))
+
+(defun tpu-update-mode-line nil
+  "Make sure mode-line in the current buffer reflects all changes."
+  (setq tpu-mark-flag (if (tpu-mark) "M" " "))
+  (cond (tpu-emacs19-p (force-mode-line-update))
+	(t (set-buffer-modified-p (buffer-modified-p)) (sit-for 0))))
+
+(cond (tpu-gnu-emacs19-p
+       (add-hook 'activate-mark-hook 'tpu-update-mode-line)
+       (add-hook 'deactivate-mark-hook 'tpu-update-mode-line))
+      (tpu-xemacs-emacs19-p
+       (add-hook 'zmacs-deactivate-region-hook 'tpu-update-mode-line)
+       (add-hook 'zmacs-activate-region-hook 'tpu-update-mode-line)))
+
+
+;;;
+;;;  Match Markers -
+;;;
+;;;     Set in:  Search
+;;;
+;;;     Used in: Replace, Substitute, Store-Text, Cut/Remove,
+;;;              Append, and Change-Case
+;;;
+(defvar tpu-match-beginning-mark (make-marker))
+(defvar tpu-match-end-mark (make-marker))
+
+(defun tpu-set-match nil
+  "Set markers at match beginning and end."
+  ;; Add one to beginning mark so it stays with the first character of
+  ;;   the string even if characters are added just before the string.
+  (setq tpu-match-beginning-mark (copy-marker (1+ (match-beginning 0))))
+  (setq tpu-match-end-mark (copy-marker (match-end 0))))
+
+(defun tpu-unset-match nil
+  "Unset match beginning and end markers."
+  (set-marker tpu-match-beginning-mark nil)
+  (set-marker tpu-match-end-mark nil))
+
+(defun tpu-match-beginning nil
+  "Returns the location of the last match beginning."
+  (1- (marker-position tpu-match-beginning-mark)))
+
+(defun tpu-match-end nil
+  "Returns the location of the last match end."
+  (marker-position tpu-match-end-mark))
+
+(defun tpu-check-match nil
+  "Returns t if point is between tpu-match markers.
+Otherwise sets the tpu-match markers to nil and returns nil."
+  ;; make sure 1- marker is in this buffer
+  ;;           2- point is at or after beginning marker
+  ;;           3- point is before ending marker, or in the case of
+  ;;              zero length regions (like bol, or eol) that the
+  ;;              beginning, end, and point are equal.
+  (cond ((and
+	  (equal (marker-buffer tpu-match-beginning-mark) (current-buffer))
+	  (>= (point) (1- (marker-position tpu-match-beginning-mark)))
+	  (or
+	   (< (point) (marker-position tpu-match-end-mark))
+	   (and (= (1- (marker-position tpu-match-beginning-mark))
+		   (marker-position tpu-match-end-mark))
+		(= (marker-position tpu-match-end-mark) (point))))) t)
+	(t
+	 (tpu-unset-match) nil)))
+
+(defun tpu-show-match-markers nil
+  "Show the values of the match markers."
+  (interactive "_")
+  (if (markerp tpu-match-beginning-mark)
+      (let ((beg (marker-position tpu-match-beginning-mark)))
+	(message "(%s, %s) in %s -- current %s in %s"
+		 (if beg (1- beg) nil)
+		 (marker-position tpu-match-end-mark)
+		 (marker-buffer tpu-match-end-mark)
+		 (point) (current-buffer)))))
+
+
+;;;
+;;;  Utilities
+;;;
+(defun tpu-caar (thingy) (car (car thingy)))
+(defun tpu-cadr (thingy) (car (cdr thingy)))
+
+(defun tpu-mark nil
+  "TPU-edt version of the mark function.
+Return the appropriate value of the mark for the current
+version of emacs."
+  (cond (tpu-xemacs-emacs19-p (mark (not zmacs-regions)))
+	(tpu-gnu-emacs19-p (and mark-active (mark (not transient-mark-mode))))
+	(t (mark))))
+
+(defun tpu-set-mark (pos)
+  "TPU-edt verion of the set-mark function.
+Sets the mark at POS and activates the region acording to the
+current version of emacs."
+  (set-mark pos)
+  (and tpu-xemacs-emacs19-p pos (zmacs-activate-region)))
+
+(defun tpu-string-prompt (prompt history-symbol)
+  "Read a string with PROMPT."
+  (if tpu-emacs19-p
+      (read-from-minibuffer prompt nil nil nil history-symbol)
+    (read-string prompt)))
+
+(defvar tpu-last-answer nil "Most recent response to tpu-y-or-n-p.")
+
+(defun tpu-y-or-n-p (prompt &optional not-yes)
+  "Prompt for a y or n answer with positive default.
+Optional second argument NOT-YES changes default to negative.
+Like emacs y-or-n-p, also accepts space as y and DEL as n."
+  (message (format "%s[%s]" prompt (if not-yes "n" "y")))
+  (let ((doit t))
+    (while doit
+      (setq doit nil)
+      (let ((ans (read-char)))
+	(cond ((or (= ans ?y) (= ans ?Y) (= ans ?\ ))
+	       (setq tpu-last-answer t))
+	      ((or (= ans ?n) (= ans ?N) (= ans ?\C-?))
+	       (setq tpu-last-answer nil))
+	      ((= ans ?\r) (setq tpu-last-answer (not not-yes)))
+	      (t
+	       (setq doit t) (beep)
+	       (message (format "Please answer y or n.  %s[%s]"
+				prompt (if not-yes "n" "y"))))))))
+  tpu-last-answer)
+
+(defun tpu-local-set-key (key func)
+  "Replace a key in the TPU-edt local key map.
+Create the key map if necessary."
+  (cond ((not (keymapp tpu-buffer-local-map))
+	 (setq tpu-buffer-local-map (if (current-local-map)
+					(copy-keymap (current-local-map))
+				      (make-sparse-keymap)))
+	 (use-local-map tpu-buffer-local-map)))
+  (local-set-key key func))
+
+(defun tpu-current-line nil
+  "Return the vertical position of point in the selected window.
+Top line is 0.  Counts each text line only once, even if it wraps."
+  (+ (count-lines (window-start) (point)) (if (= (current-column) 0) 1 0) -1))
+
+
+;;;
+;;;  Breadcrumbs
+;;;
+(defvar tpu-breadcrumb-plist nil
+  "The set of user-defined markers (breadcrumbs), as a plist.")
+
+(defun tpu-drop-breadcrumb (num)
+  "Drops a breadcrumb that can be returned to later with goto-breadcrumb."
+  (interactive "_p")
+  (put tpu-breadcrumb-plist num (list (current-buffer) (point)))
+  (message "Mark %d set." num))
+
+(defun tpu-goto-breadcrumb (num)
+  "Returns to a breadcrumb set with drop-breadcrumb."
+  (interactive "_p")
+  (cond ((get tpu-breadcrumb-plist num)
+	 (switch-to-buffer (car (get tpu-breadcrumb-plist num)))
+	 (goto-char (tpu-cadr (get tpu-breadcrumb-plist num)))
+	 (message "mark %d found." num))
+	(t
+	 (message "mark %d not found." num))))
+
+
+;;;
+;;;  Miscellaneous
+;;;
+(defun tpu-change-case (num)
+  "Change the case of the character under the cursor or region.
+Accepts a prefix argument of the number of characters to invert."
+  (interactive "_p")
+  (cond ((tpu-mark)
+	 (let ((beg (region-beginning)) (end (region-end)))
+	   (while (> end beg)
+	     (funcall (if (= (downcase (char-after beg)) (char-after beg))
+			  'upcase-region 'downcase-region)
+		      beg (1+ beg))
+	     (setq beg (1+ beg)))
+	   (tpu-unselect t)))
+	((tpu-check-match)
+	 (let ((beg (tpu-match-beginning)) (end (tpu-match-end)))
+	   (while (> end beg)
+	     (funcall (if (= (downcase (char-after beg)) (char-after beg))
+			  'upcase-region 'downcase-region)
+		      beg (1+ beg))
+	     (setq beg (1+ beg)))
+	   (tpu-unset-match)))
+	(t
+	 (while (> num 0)
+	   (funcall (if (= (downcase (following-char)) (following-char))
+			'upcase-region 'downcase-region)
+		    (point) (1+ (point)))
+	   (forward-char (if tpu-reverse -1 1))
+	   (setq num (1- num))))))
+
+(defun tpu-fill (num)
+  "Fill paragraph or marked region.
+With argument, fill and justify."
+  (interactive "_P")
+  (cond ((tpu-mark)
+	 (fill-region (point) (tpu-mark) num)
+	 (tpu-unselect t))
+	(t
+	 (fill-paragraph num))))
+
+(defun tpu-version nil
+  "Print the TPU-edt version number."
+  (interactive "_")
+  (message
+   "TPU-edt version %s by Rob Riepel (riepel@networking.stanford.edu)"
+   tpu-version))
+
+(defun tpu-reset-screen-size (height width)
+  "Sets the screen size."
+  (interactive "_nnew screen height: \nnnew screen width: ")
+  (set-screen-height (selected-screen) height)
+  (set-screen-width (selected-screen) width))
+
+(defun tpu-toggle-newline-and-indent nil
+  "Toggle between 'newline and indent' and 'simple newline'."
+  (interactive "_")
+  (cond (tpu-newline-and-indent-p
+         (setq tpu-newline-and-indent-string "")
+         (setq tpu-newline-and-indent-p nil)
+         (tpu-local-set-key "\C-m" 'newline))
+        (t
+         (setq tpu-newline-and-indent-string " AutoIndent")
+         (setq tpu-newline-and-indent-p t)
+         (tpu-local-set-key "\C-m" 'newline-and-indent)))
+  (tpu-update-mode-line)
+  (and (interactive-p)
+       (message "Carriage return inserts a newline%s"
+		(if tpu-newline-and-indent-p " and indents." "."))))
+
+(defun tpu-spell-check nil
+  "Checks the spelling of the region, or of the entire buffer if no
+ region is selected."
+  (interactive "_")
+  (cond (tpu-have-ispell
+	 (if (tpu-mark) (ispell-region (tpu-mark) (point)) (ispell-buffer)))
+	(t
+	 (if (tpu-mark) (spell-region (tpu-mark) (point)) (spell-buffer))))
+  (if (tpu-mark) (tpu-unselect t)))
+
+(defun tpu-toggle-overwrite-mode nil
+  "Switches in and out of overwrite mode"
+  (interactive "_")
+  (cond (overwrite-mode
+	 (tpu-local-set-key "\177" tpu-saved-delete-func)
+	 (overwrite-mode 0))
+	(t
+	 (setq tpu-saved-delete-func (local-key-binding "\177"))
+	 (tpu-local-set-key "\177" 'picture-backward-clear-column)
+	 (overwrite-mode 1))))
+
+(defun tpu-special-insert (num)
+  "Insert a character or control code according to
+its ASCII decimal value."
+  (interactive "_P")
+  (if overwrite-mode (delete-char 1))
+  (insert (if num num 0)))
+
+(defun tpu-quoted-insert (num)
+  "Read next input character and insert it.
+This is useful for inserting control characters."
+  (interactive "_*p")
+  (let ((char (read-char)) )
+    (if overwrite-mode (delete-char num))
+    (insert-char char num)))
+
+
+;;;
+;;;  TPU line-mode commands
+;;;
+(defun tpu-include (file)
+  "TPU-like include file"
+  (interactive "_fInclude file: ")
+  (save-excursion
+    (insert-file file)
+    (message "")))
+
+(defun tpu-get (file)
+  "TPU-like get file"
+  (interactive "_FFile to get: ")
+  (find-file file))
+
+(defun tpu-what-line nil
+  "Tells what line the point is on,
+ and the total number of lines in the buffer."
+  (interactive "_")
+  (if (eobp)
+      (message "You are at the End of Buffer.  The last line is %d."
+	       (count-lines 1 (point-max)))
+    (message "Line %d of %d"
+	     (count-lines 1 (1+ (point)))
+	     (count-lines 1 (point-max)))))
+
+(defun tpu-exit nil
+  "Exit the way TPU does, save current buffer and ask about others."
+  (interactive "_")
+  (if (not (eq (recursion-depth) 0))
+      (exit-recursive-edit)
+    (progn (save-buffer) (save-buffers-kill-emacs))))
+
+(defun tpu-quit nil
+  "Quit the way TPU does, ask to make sure changes should be abandoned."
+  (interactive "_")
+  (let ((list (buffer-list))
+	(working t))
+    (while (and list working)
+      (let ((buffer (car list)))
+	(if (and (buffer-file-name buffer) (buffer-modified-p buffer))
+            (if (tpu-y-or-n-p
+		 "Modifications will not be saved, continue quitting? ")
+		(kill-emacs t) (setq working nil)))
+	(setq list (cdr list))))
+    (if working (kill-emacs t))))
+
+
+;;;
+;;;  Command and Function Aliases
+;;;
+;;;###autoload
+(fset 'tpu-edt-mode 'tpu-edt-on)
+(fset 'TPU-EDT-MODE 'tpu-edt-on)
+
+;;;###autoload
+(fset 'tpu-edt 'tpu-edt-on)
+(fset 'TPU-EDT 'tpu-edt-on)
+
+(fset 'exit 'tpu-exit)
+(fset 'EXIT 'tpu-exit)
+
+(fset 'Get 'tpu-get)
+(fset 'GET 'tpu-get)
+
+(fset 'include 'tpu-include)
+(fset 'INCLUDE 'tpu-include)
+
+(fset 'quit 'tpu-quit)
+(fset 'QUIT 'tpu-quit)
+
+(fset 'spell 'tpu-spell-check)
+(fset 'SPELL 'tpu-spell-check)
+
+(fset 'what\ line 'tpu-what-line)
+(fset 'WHAT\ LINE 'tpu-what-line)
+
+(fset 'replace 'tpu-lm-replace)
+(fset 'REPLACE 'tpu-lm-replace)
+
+(fset 'help 'tpu-help)
+(fset 'HELP 'tpu-help)
+
+(fset 'set\ cursor\ free 'tpu-set-cursor-free)
+(fset 'SET\ CURSOR\ FREE 'tpu-set-cursor-free)
+
+(fset 'set\ cursor\ bound 'tpu-set-cursor-bound)
+(fset 'SET\ CURSOR\ BOUND 'tpu-set-cursor-bound)
+
+(fset 'set\ scroll\ margins 'tpu-set-scroll-margins)
+(fset 'SET\ SCROLL\ MARGINS 'tpu-set-scroll-margins)
+
+
+;; Around emacs version 18.57, function line-move was renamed to
+;; next-line-internal.  If we're running under an older emacs,
+;; make next-line-internal equivalent to line-move.
+
+(if (not (fboundp 'next-line-internal)) (fset 'next-line-internal 'line-move))
+
+
+;;;
+;;;  Help
+;;;
+(defconst tpu-help-keypad-map "\f
+          _______________________    _______________________________
+         | HELP  |      Do       |  |       |       |       |       |
+         |KeyDefs|               |  |       |       |       |       |
+         |_______|_______________|  |_______|_______|_______|_______|
+          _______________________    _______________________________
+         | Find  |Insert |Remove |  | Gold  | HELP  |FndNxt | Del L |
+         |       |       |Sto Tex|  |  key  |E-Help | Find  |Undel L|
+         |_______|_______|_______|  |_______|_______|_______|_______|
+         |Select |Pre Scr|Nex Scr|  | Page  | Sect  |Append | Del W |
+         | Reset |Pre Win|Nex Win|  |  Do   | Fill  |Replace|Undel W|
+         |_______|_______|_______|  |_______|_______|_______|_______|
+                 |Move up|          |Forward|Reverse|Remove | Del C |
+                 |  Top  |          |Bottom |  Top  |Insert |Undel C|
+          _______|_______|_______   |_______|_______|_______|_______|
+         |Mov Lef|Mov Dow|Mov Rig|  | Word  |  EOL  | Char  |       |
+         |StaOfLi|Bottom |EndOfLi|  |ChngCas|Del EOL|SpecIns| Enter |
+         |_______|_______|_______|  |_______|_______|_______|       |
+                                    |     Line      |Select | Subs  |
+                                    |   Open Line   | Reset |       |
+                                    |_______________|_______|_______|
+")
+
+(defconst tpu-help-text "
+\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\f
+
+      Control Characters
+
+      ^A  toggle insert and overwrite
+      ^B  recall
+      ^E  end of line
+
+      ^G  Cancel current operation
+      ^H  beginning of line
+      ^J  delete previous word
+
+      ^K  learn
+      ^L  insert page break
+      ^R  remember (during learn), re-center
+
+      ^U  delete to beginning of line
+      ^V  quote
+      ^W  refresh
+
+      ^Z  exit
+    ^X^X  exchange point and mark - useful for checking region boundaries
+
+\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\f
+       Gold-<key> Functions
+
+       B     Next Buffer - display the next buffer (all buffers)
+       C     Recall - edit and possibly repeat previous commands
+       E     Exit - save current buffer and ask about others
+
+       G     Get - load a file into a new edit buffer
+       I     Include - include a file in this buffer
+       K     Kill Buffer - abandon edits and delete buffer
+
+       M     Buffer Menu - display a list of all buffers
+       N     Next File Buffer - display next buffer containing a file
+       O     Occur - show following lines containing REGEXP
+
+       Q     Quit - exit without saving anything
+       R     Toggle rectangular mode for remove and insert
+       S     Search and substitute - line mode REPLACE command
+
+       U     Undo - undo the last edit
+       W     Write - save current buffer
+       X     Exit - save all modified buffers and exit
+
+\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\f
+
+   *** No more help, use P to view previous screen")
+
+(defvar tpu-help-enter (format "%s" "\eOM"))    ; tpu-help enter key symbol
+(defvar tpu-help-return (format "%s" "\r"))     ; tpu-help enter key symbol
+(defvar tpu-help-N "N")                         ; tpu-help "N" symbol
+(defvar tpu-help-n "n")                         ; tpu-help "n" symbol
+(defvar tpu-help-P "P")                         ; tpu-help "P" symbol
+(defvar tpu-help-p "p")                         ; tpu-help "p" symbol
+
+(defun tpu-help nil
+  "Display TPU-edt help."
+  (interactive "_")
+  ;; Save current window configuration
+  (save-window-excursion
+    ;; Create and fill help buffer if necessary
+    (if (not (get-buffer "*TPU-edt Help*"))
+	(progn (generate-new-buffer "*TPU-edt Help*")
+	       (switch-to-buffer "*TPU-edt Help*")
+	       (insert tpu-help-keypad-map)
+	       (insert tpu-help-text)
+	       (setq buffer-read-only t)))
+
+    ;; Display the help buffer
+    (switch-to-buffer "*TPU-edt Help*")
+    (delete-other-windows)
+    (tpu-move-to-beginning)
+    (forward-line 1)
+    (tpu-line-to-top-of-window)
+
+    ;; Prompt for keys to describe, based on screen state (split/not split)
+    (let ((key nil) (fkey nil) (split nil))
+      (while (not (equal tpu-help-return fkey))
+	(if split
+	    (setq key
+		  (read-key-sequence
+		   "Press the key you want help on (RET=exit, ENTER=redisplay, N=next, 
+P=prev): "))
+	  (setq key
+		(read-key-sequence
+		 "Press the key you want help on (RET to exit, N next screen, P prev 
+screen): ")))
+
+	;; Process the read key
+	;;
+	;;    ENTER   -  Display just the help window
+	;;    N or n  -  Next help or describe-key screen
+	;;    P or p  -  Previous help or describe-key screen
+	;;    RETURN  -  Exit from TPU-help
+	;;    default -  describe the key
+	;;
+	(setq fkey (format "%s" key))
+	(cond ((equal tpu-help-enter fkey)
+	       (setq split nil)
+	       (delete-other-windows))
+	      ((or (equal tpu-help-N fkey) (equal tpu-help-n fkey))
+	       (cond (split
+	              (condition-case nil
+	        	  (scroll-other-window 8)
+	        	(error nil)))
+	             (t
+	              (forward-page)
+	              (forward-line 1)
+	              (tpu-line-to-top-of-window))))
+	      ((or (equal tpu-help-P fkey) (equal tpu-help-p fkey))
+	       (cond (split
+	              (condition-case nil
+	        	  (scroll-other-window -8)
+	        	(error nil)))
+	             (t
+	              (backward-page 2)
+	              (forward-line 1)
+	              (tpu-line-to-top-of-window))))
+	      ((not (equal tpu-help-return fkey))
+	       (setq split t)
+	       (describe-key key)
+	       ;; If the key is undefined, leave the
+	       ;;   message in the mini-buffer for 3 seconds
+	       (if (not (key-binding key)) (sit-for 3))))))))
+
+
+;;;
+;;;  Auto-insert
+;;;
+(defun tpu-insert-escape nil
+  "Inserts an escape character, and so becomes the escape-key alias."
+  (interactive "_")
+  (insert "\e"))
+
+(defun tpu-insert-formfeed nil
+  "Inserts a formfeed character."
+  (interactive "_")
+  (insert "\C-L"))
+
+
+;;;
+;;;  Define key
+;;;
+(defvar tpu-saved-control-r nil "Saved value of Control-r.")
+
+(defun tpu-end-define-macro-key (key)
+  "Ends the current macro definition"
+  (interactive "_kPress the key you want to use to do what was just learned: ")
+  (end-kbd-macro nil)
+  (global-set-key key last-kbd-macro)
+  (global-set-key "\C-r" tpu-saved-control-r))
+
+(defun tpu-define-macro-key nil
+  "Bind a set of keystrokes to a single key, or key combination."
+  (interactive "_")
+  (setq tpu-saved-control-r (global-key-binding "\C-r"))
+  (global-set-key "\C-r" 'tpu-end-define-macro-key)
+  (start-kbd-macro nil))
+
+
+;;;
+;;;  Buffers and Windows
+;;;
+(defun tpu-kill-buffer nil
+  "Kills the current buffer.  If tpu-kill-buffers-silently is non-nil,
+kills modified buffers without asking."
+  (interactive)
+  (if tpu-kill-buffers-silently (set-buffer-modified-p nil))
+  (kill-buffer (current-buffer)))
+
+(defun tpu-save-all-buffers-kill-emacs nil
+  "Save all buffers and exit emacs."
+  (interactive)
+  (setq trim-versions-without-asking t)
+  (save-buffers-kill-emacs t))
+
+(defun tpu-write-current-buffers nil
+  "Save all modified buffers without exiting."
+  (interactive "_")
+  (save-some-buffers t))
+
+(defun tpu-next-buffer nil
+  "Go to next buffer in ring."
+  (interactive)
+  (switch-to-buffer (car (reverse (buffer-list)))))
+
+(defun tpu-next-file-buffer nil
+  "Go to next buffer in ring that is visiting a file."
+  (interactive)
+  (let ((starting-buffer (buffer-name)))
+    (switch-to-buffer (car (reverse (buffer-list))))
+    (while (and (not (equal (buffer-name) starting-buffer))
+		(not (buffer-file-name)))
+      (switch-to-buffer (car (reverse (buffer-list)))))
+    (if (equal (buffer-name) starting-buffer) (error "No other buffers."))))
+
+(defun tpu-next-window nil
+  "Move to the next window."
+  (interactive)
+  (if (one-window-p) (message "There is only one window on screen.")
+    (other-window 1)))
+
+(defun tpu-previous-window nil
+  "Move to the previous window."
+  (interactive)
+  (if (one-window-p) (message "There is only one window on screen.")
+    (select-window (previous-window))))
+
+
+;;;
+;;;  Search
+;;;
+(defun tpu-toggle-regexp nil
+  "Switches in and out of regular expression search and replace mode."
+  (interactive "_")
+  (setq tpu-regexp-p (not tpu-regexp-p))
+  (tpu-set-search)
+  (and (interactive-p)
+       (message "Regular expression search and substitute %sabled."
+		(if tpu-regexp-p "en" "dis"))))
+
+(defun tpu-regexp-prompt (prompt)
+  "Read a string, adding 'RE' to the prompt if tpu-regexp-p is set."
+  (let ((re-prompt (concat (if tpu-regexp-p "RE ") prompt)))
+    (if tpu-emacs19-p
+	(read-from-minibuffer re-prompt nil nil nil 'tpu-regexp-prompt-hist)
+      (read-string re-prompt))))
+
+(defun tpu-search nil
+  "Search for a string or regular expression.
+The search is performed in the current direction."
+  (interactive "_")
+  (tpu-set-search)
+  (tpu-search-internal ""))
+
+(defun tpu-search-forward nil
+  "Search for a string or regular expression.
+The search is begins in the forward direction."
+  (interactive "_")
+  (setq tpu-searching-forward t)
+  (tpu-set-search t)
+  (tpu-search-internal ""))
+
+(defun tpu-search-reverse nil
+  "Search for a string or regular expression.
+The search is begins in the reverse direction."
+  (interactive "_")
+  (setq tpu-searching-forward nil)
+  (tpu-set-search t)
+  (tpu-search-internal ""))
+
+(defun tpu-search-again nil
+  "Search for the same string or regular expression as last time.
+The search is performed in the current direction."
+  (interactive "_")
+  (tpu-search-internal tpu-search-last-string))
+
+;;  tpu-set-search defines the search functions used by the TPU-edt internal
+;;  search function.  It should be called whenever the direction changes, or
+;;  the regular expression mode is turned on or off.  It can also be called
+;;  to ensure that the next search will be in the current direction.  It is
+;;  called from:
+
+;;       tpu-advance              tpu-backup
+;;       tpu-toggle-regexp        tpu-toggle-search-direction (t)
+;;       tpu-search               tpu-lm-replace
+;;       tpu-search-forward (t)   tpu-search-reverse (t)
+
+(defun tpu-set-search (&optional arg)
+  "Set the search functions and set the search direction to the current
+direction.  If an argument is specified, don't set the search direction."
+  (if (not arg) (setq tpu-searching-forward (if tpu-advance t nil)))
+  (cond (tpu-searching-forward
+	 (cond (tpu-regexp-p
+		(fset 'tpu-emacs-search 're-search-forward)
+		(fset 'tpu-emacs-rev-search 're-search-backward))
+	       (t
+		(fset 'tpu-emacs-search 'search-forward)
+		(fset 'tpu-emacs-rev-search 'search-backward))))
+	(t
+	 (cond (tpu-regexp-p
+		(fset 'tpu-emacs-search 're-search-backward)
+		(fset 'tpu-emacs-rev-search 're-search-forward))
+	       (t
+		(fset 'tpu-emacs-search 'search-backward)
+		(fset 'tpu-emacs-rev-search 'search-forward))))))
+
+(defun tpu-search-internal (pat &optional quiet)
+  "Search for a string or regular expression."
+  (setq tpu-search-last-string
+	(if (not (string= "" pat)) pat (tpu-regexp-prompt "Search: ")))
+
+  (tpu-unset-match)
+  (tpu-adjust-search)
+
+  (cond ((tpu-emacs-search tpu-search-last-string nil t)
+	 (tpu-set-match) (goto-char (tpu-match-beginning)))
+
+	(t
+	 (tpu-adjust-search t)
+	 (let ((found nil) (pos nil))
+	   (save-excursion
+	     (let ((tpu-searching-forward (not tpu-searching-forward)))
+	       (tpu-adjust-search)
+	       (setq found (tpu-emacs-rev-search tpu-search-last-string nil t))
+	       (setq pos (match-beginning 0))))
+
+	   (cond (found
+		  (cond ((tpu-y-or-n-p
+			  (format "Found in %s direction.  Go there? "
+				  (if tpu-searching-forward "reverse" "forward")))
+			 (goto-char pos) (tpu-set-match)
+			 (tpu-toggle-search-direction))))
+
+		 (t
+		  (if (not quiet)
+		      (message
+		       "%sSearch failed: \"%s\""
+		       (if tpu-regexp-p "RE " "") tpu-search-last-string))))))))
+
+(fset 'tpu-search-internal-core (symbol-function 'tpu-search-internal))
+
+(defun tpu-adjust-search (&optional arg)
+  "For forward searches, move forward a character before searching,
+and backward a character after a failed search.  Arg means end of search."
+  (if tpu-searching-forward
+      (cond (arg (if (not (bobp)) (forward-char -1)))
+	    (t (if (not (eobp)) (forward-char 1))))))
+
+(defun tpu-toggle-search-direction nil
+  "Toggle the TPU-edt search direction.
+Used for reversing a search in progress."
+  (interactive "_")
+  (setq tpu-searching-forward (not tpu-searching-forward))
+  (tpu-set-search t)
+  (and (interactive-p)
+       (message "Searching %sward."
+		(if tpu-searching-forward "for" "back"))))
+
+
+;;;
+;;;  Select / Unselect
+;;;
+(defun tpu-select (&optional quiet)
+  "Sets the mark to define one end of a region."
+  (interactive "_P")
+  (cond ((tpu-mark)
+	 (tpu-unselect quiet))
+	(t
+	 (tpu-set-mark (point))
+	 (tpu-update-mode-line)
+	 (if (not quiet) (message "Move the text cursor to select text.")))))
+
+(defun tpu-unselect (&optional quiet)
+  "Removes the mark to unselect the current region."
+  (interactive "P")
+  (setq mark-ring nil)
+  (tpu-set-mark nil)
+  (tpu-update-mode-line)
+  (zmacs-deactivate-region)
+  (if (not quiet) (message "Selection canceled.")))
+
+
+;;;
+;;;  Delete / Cut
+;;;
+(defun tpu-toggle-rectangle nil
+  "Toggle rectangular mode for remove and insert."
+  (interactive "_")
+  (setq tpu-rectangular-p (not tpu-rectangular-p))
+  (setq tpu-rectangle-string (if tpu-rectangular-p " Rect" ""))
+  (tpu-update-mode-line)
+  (and (interactive-p)
+       (message "Rectangular cut and paste %sabled."
+		(if tpu-rectangular-p "en" "dis"))))
+
+(defun tpu-arrange-rectangle nil
+  "Adjust point and mark to mark upper left and lower right
+corners of a rectangle."
+  (let ((mc (current-column))
+	(pc (progn (exchange-point-and-mark) (current-column))))
+
+    (cond ((> (point) (tpu-mark))                      ; point on lower line
+	   (cond ((> pc mc)                        ; point @  lower-right
+		  (exchange-point-and-mark))       ; point -> upper-left
+
+		 (t	                           ; point @  lower-left
+		  (move-to-column-force mc)        ; point -> lower-right
+		  (exchange-point-and-mark)        ; point -> upper-right
+		  (move-to-column-force pc))))     ; point -> upper-left
+
+	  (t                                       ; point on upper line
+	   (cond ((> pc mc)                        ; point @  upper-right
+		  (move-to-column-force mc)        ; point -> upper-left
+		  (exchange-point-and-mark)        ; point -> lower-left
+		  (move-to-column-force pc)        ; point -> lower-right
+		  (exchange-point-and-mark)))))))  ; point -> upper-left
+
+(defun tpu-cut-text nil
+  "Delete the selected region.
+The text is saved for the tpu-paste command."
+  (interactive)
+  (cond ((tpu-mark)
+	 (cond (tpu-rectangular-p
+		(tpu-arrange-rectangle)
+		(picture-clear-rectangle (point) (tpu-mark) (not overwrite-mode))
+		(tpu-unselect t))
+	       (t
+		(setq tpu-last-deleted-region
+		      (buffer-substring (tpu-mark) (point)))
+		(delete-region (tpu-mark) (point))
+		(tpu-unselect t))))
+	((tpu-check-match)
+	 (let ((beg (tpu-match-beginning)) (end (tpu-match-end)))
+	   (setq tpu-last-deleted-region (buffer-substring beg end))
+	   (delete-region beg end)
+	   (tpu-unset-match)))
+	(t
+	 (error "No selection active."))))
+
+(defun tpu-store-text nil
+  "Copy the selected region to the cut buffer without deleting it.
+The text is saved for the tpu-paste command."
+  (interactive)
+  (cond ((tpu-mark)
+	 (cond (tpu-rectangular-p
+		(save-excursion
+		  (tpu-arrange-rectangle)
+		  (setq picture-killed-rectangle
+			(extract-rectangle (point) (tpu-mark))))
+		(tpu-unselect t))
+	       (t
+		(setq tpu-last-deleted-region
+		      (buffer-substring (tpu-mark) (point)))
+		(tpu-unselect t))))
+	((tpu-check-match)
+	 (setq tpu-last-deleted-region
+	       (buffer-substring (tpu-match-beginning) (tpu-match-end)))
+	 (tpu-unset-match))
+	(t
+	 (error "No selection active."))))
+
+(defun tpu-cut (arg)
+  "Copy selected region to the cut buffer.  In the absence of an
+argument, delete the selected region too."
+  (interactive "P")
+  (if arg (tpu-store-text) (tpu-cut-text)))
+
+(defun tpu-append-region (arg)
+  "Append selected region to the tpu-cut buffer.  In the absence of an
+argument, delete the selected region too."
+  (interactive "_P")
+  (cond ((tpu-mark)
+	 (let ((beg (region-beginning)) (end (region-end)))
+	   (setq tpu-last-deleted-region
+		 (concat tpu-last-deleted-region
+			 (buffer-substring beg end)))
+	   (if (not arg) (delete-region beg end))
+	   (tpu-unselect t)))
+	((tpu-check-match)
+	 (let ((beg (tpu-match-beginning)) (end (tpu-match-end)))
+	   (setq tpu-last-deleted-region
+		 (concat tpu-last-deleted-region
+			 (buffer-substring beg end)))
+	   (if (not arg) (delete-region beg end))
+	   (tpu-unset-match)))
+	(t
+	 (error "No selection active."))))
+
+(defun tpu-delete-current-line (num)
+  "Delete one or specified number of lines after point.
+This includes the newline character at the end of each line.
+They are saved for the TPU-edt undelete-lines command."
+  (interactive "_p")
+  (let ((beg (point)))
+    (forward-line num)
+    (if (not (eq (preceding-char) ?\n))
+        (insert "\n"))
+    (setq tpu-last-deleted-lines
+          (buffer-substring beg (point)))
+    (delete-region beg (point))))
+
+(defun tpu-delete-to-eol (num)
+  "Delete text up to end of line.
+With argument, delete up to to Nth line-end past point.
+They are saved for the TPU-edt undelete-lines command."
+  (interactive "_p")
+  (let ((beg (point)))
+    (forward-char 1)
+    (end-of-line num)
+    (setq tpu-last-deleted-lines
+          (buffer-substring beg (point)))
+    (delete-region beg (point))))
+
+(defun tpu-delete-to-bol (num)
+  "Delete text back to beginning of line.
+With argument, delete up to to Nth line-end past point.
+They are saved for the TPU-edt undelete-lines command."
+  (interactive "_p")
+  (let ((beg (point)))
+    (tpu-next-beginning-of-line num)
+    (setq tpu-last-deleted-lines
+          (buffer-substring (point) beg))
+    (delete-region (point) beg)))
+
+(defun tpu-delete-current-word (num)
+  "Delete one or specified number of words after point.
+They are saved for the TPU-edt undelete-words command."
+  (interactive "_p")
+  (let ((beg (point)))
+    (tpu-forward-to-word num)
+    (setq tpu-last-deleted-words
+          (buffer-substring beg (point)))
+    (delete-region beg (point))))
+
+(defun tpu-delete-previous-word (num)
+  "Delete one or specified number of words before point.
+They are saved for the TPU-edt undelete-words command."
+  (interactive "_p")
+  (let ((beg (point)))
+    (tpu-backward-to-word num)
+    (setq tpu-last-deleted-words
+          (buffer-substring (point) beg))
+    (delete-region beg (point))))
+
+(defun tpu-delete-current-char (num)
+  "Delete one or specified number of characters after point.  The last
+character deleted is saved for the TPU-edt undelete-char command."
+  (interactive "_p")
+  (while (and (> num 0) (not (eobp)))
+    (setq tpu-last-deleted-char (char-after (point)))
+    (cond (overwrite-mode
+	   (picture-clear-column 1)
+	   (forward-char 1))
+	  (t
+	   (delete-char 1)))
+    (setq num (1- num))))
+
+
+;;;
+;;;  Undelete / Paste
+;;;
+(defun tpu-paste (num)
+  "Insert the last region or rectangle of killed text.
+With argument reinserts the text that many times."
+  (interactive "_p")
+  (while (> num 0)
+    (cond (tpu-rectangular-p
+	   (let ((beg (point)))
+	     (save-excursion
+	       (picture-yank-rectangle (not overwrite-mode))
+	       (message ""))
+	     (goto-char beg)))
+	  (t
+	   (insert tpu-last-deleted-region)))
+    (setq num (1- num))))
+
+(defun tpu-undelete-lines (num)
+  "Insert lines deleted by last TPU-edt line-deletion command.
+With argument reinserts lines that many times."
+  (interactive "_p")
+  (let ((beg (point)))
+    (while (> num 0)
+      (insert tpu-last-deleted-lines)
+      (setq num (1- num)))
+    (goto-char beg)))
+
+(defun tpu-undelete-words (num)
+  "Insert words deleted by last TPU-edt word-deletion command.
+With argument reinserts words that many times."
+  (interactive "_p")
+  (let ((beg (point)))
+    (while (> num 0)
+      (insert tpu-last-deleted-words)
+      (setq num (1- num)))
+    (goto-char beg)))
+
+(defun tpu-undelete-char (num)
+  "Insert character deleted by last TPU-edt character-deletion command.
+With argument reinserts the character that many times."
+  (interactive "_p")
+  (while (> num 0)
+    (if overwrite-mode (prog1 (forward-char -1) (delete-char 1)))
+    (insert tpu-last-deleted-char)
+    (forward-char -1)
+    (setq num (1- num))))
+
+
+;;;
+;;;  Replace and Substitute
+;;;
+(defun tpu-replace nil
+  "Replace the selected region with the contents of the cut buffer."
+  (interactive)
+  (cond ((tpu-mark)
+	 (let ((beg (region-beginning)) (end (region-end)))
+	   (setq tpu-last-replaced-text (buffer-substring beg end))
+	   (delete-region beg end)
+	   (insert tpu-last-deleted-region)
+	   (tpu-unselect t)))
+	((tpu-check-match)
+	 (let ((beg (tpu-match-beginning)) (end (tpu-match-end)))
+	   (setq tpu-last-replaced-text (buffer-substring beg end))
+	   (replace-match tpu-last-deleted-region
+			  (not case-replace) (not tpu-regexp-p))
+	   (tpu-unset-match)))
+	(t
+	 (error "No selection active."))))
+
+(defun tpu-substitute (num)
+  "Replace the selected region with the contents of the cut buffer, and
+repeat most recent search.  A numeric argument serves as a repeat count.
+A negative argument means replace all occurrences of the search string."
+  (interactive "_p")
+  (cond ((or (tpu-mark) (tpu-check-match))
+	 (while (and (not (= num 0)) (or (tpu-mark) (tpu-check-match)))
+	   (let ((beg (point)))
+	     (tpu-replace)
+	     (if tpu-searching-forward (forward-char -1) (goto-char beg))
+	     (if (= num 1) (tpu-search-internal tpu-search-last-string)
+	       (tpu-search-internal-core tpu-search-last-string)))
+	   (setq num (1- num))))
+	(t
+	 (error "No selection active."))))
+
+(defun tpu-lm-replace (from to)
+  "Interactively search for OLD-string and substitute NEW-string."
+  (interactive (list (tpu-regexp-prompt "Old String: ")
+		     (tpu-regexp-prompt "New String: ")))
+
+  (let ((doit t) (strings 0))
+
+    ;; Can't replace null strings
+    (if (string= "" from) (error "No string to replace."))
+
+    ;; Find the first occurrence
+    (tpu-set-search)
+    (tpu-search-internal from t)
+
+    ;; Loop on replace question - yes, no, all, last, or quit.
+    (while doit
+      (if (not (tpu-check-match)) (setq doit nil)
+	(progn (message "Replace? Type Yes, No, All, Last, or Quit: ")
+	       (let ((ans (read-char)))
+
+		 (cond ((or (= ans ?y) (= ans ?Y) (= ans ?\r) (= ans ?\ ))
+			(let ((beg (point)))
+			  (replace-match to (not case-replace) (not tpu-regexp-p))
+			  (setq strings (1+ strings))
+			  (if tpu-searching-forward (forward-char -1) (goto-char beg)))
+			(tpu-search-internal from t))
+
+		       ((or (= ans ?n) (= ans ?N) (= ans ?\C-?))
+			(tpu-search-internal from t))
+
+		       ((or (= ans ?a) (= ans ?A))
+			(save-excursion
+			  (let ((beg (point)))
+			    (replace-match to (not case-replace) (not tpu-regexp-p))
+			    (setq strings (1+ strings))
+			    (if tpu-searching-forward (forward-char -1) (goto-char beg)))
+			  (tpu-search-internal-core from t)
+			  (while (tpu-check-match)
+			    (let ((beg (point)))
+			      (replace-match to (not case-replace) (not tpu-regexp-p))
+			      (setq strings (1+ strings))
+			      (if tpu-searching-forward (forward-char -1) (goto-char beg)))
+			    (tpu-search-internal-core from t)))
+			(setq doit nil))
+
+		       ((or (= ans ?l) (= ans ?L))
+			(let ((beg (point)))
+			  (replace-match to (not case-replace) (not tpu-regexp-p))
+			  (setq strings (1+ strings))
+			  (if tpu-searching-forward (forward-char -1) (goto-char beg)))
+			(setq doit nil))
+
+		       ((or (= ans ?q) (= ans ?Q))
+			(setq doit nil)))))))
+
+    (message "Replaced %s occurrence%s." strings
+	     (if (not (= 1 strings)) "s" ""))))
+
+(defun tpu-emacs-replace (&optional dont-ask)
+  "A TPU-edt interface to the emacs replace functions.  If TPU-edt is
+currently in regular expression mode, the emacs regular expression
+replace functions are used.  If an argument is supplied, replacements
+are performed without asking.  Only works in forward direction."
+  (interactive "_P")
+  (cond (dont-ask
+	 (setq current-prefix-arg nil)
+	 (call-interactively
+	  (if tpu-regexp-p 'replace-regexp 'replace-string)))
+	(t
+	 (call-interactively
+	  (if tpu-regexp-p 'query-replace-regexp 'query-replace)))))
+
+(defun tpu-add-at-bol (text)
+  "Add text to the beginning of each line in a region,
+or each line in the entire buffer if no region is selected."
+  (interactive
+   (list (tpu-string-prompt "String to add: " 'tpu-add-at-bol-hist)))
+  (if (string= "" text) (error "No string specified."))
+  (cond ((tpu-mark)
+	 (save-excursion
+	   (if (> (point) (tpu-mark)) (exchange-point-and-mark))
+	   (while (and (< (point) (tpu-mark)) (re-search-forward "^" (tpu-mark) t))
+	     (if (< (point) (tpu-mark)) (replace-match text))))
+	 (tpu-unselect t))
+	(t
+	 (save-excursion
+	   (goto-char (point-min))
+	   (while (and (re-search-forward "^" nil t) (not (eobp)))
+	     (replace-match text))))))
+
+(defun tpu-add-at-eol (text)
+  "Add text to the end of each line in a region,
+or each line of the entire buffer if no region is selected."
+  (interactive
+   (list (tpu-string-prompt "String to add: " 'tpu-add-at-eol-hist)))
+  (if (string= "" text) (error "No string specified."))
+  (cond ((tpu-mark)
+	 (save-excursion
+	   (if (> (point) (tpu-mark)) (exchange-point-and-mark))
+	   (while (< (point) (tpu-mark))
+	     (end-of-line)
+	     (if (<= (point) (tpu-mark)) (insert text))
+	     (forward-line)))
+	 (tpu-unselect t))
+	(t
+	 (save-excursion
+	   (goto-char (point-min))
+	   (while (not (eobp))
+	     (end-of-line) (insert text) (forward-line))))))
+
+(defun tpu-trim-line-ends nil
+  "Removes trailing whitespace from every line in the buffer."
+  (interactive)
+  (picture-clean))
+
+
+;;;
+;;;  Movement by character
+;;;
+(defun tpu-char (num)
+  "Move to the next character in the current direction.
+A repeat count means move that many characters."
+  (interactive "_p")
+  (if tpu-advance (tpu-forward-char num) (tpu-backward-char num)))
+
+(defun tpu-forward-char (num)
+  "Move right ARG characters (left if ARG is negative)."
+  (interactive "_p")
+  (forward-char num))
+
+(defun tpu-backward-char (num)
+  "Move left ARG characters (right if ARG is negative)."
+  (interactive "_p")
+  (backward-char num))
+
+
+;;;
+;;;  Movement by word
+;;;
+(defconst tpu-word-separator-list '()
+  "List of additional word separators.")
+(defconst tpu-skip-chars "^ \t"
+  "Characters to skip when moving by word.
+Additional word separators are added to this string.")
+
+(defun tpu-word (num)
+  "Move to the beginning of the next word in the current direction.
+A repeat count means move that many words."
+  (interactive "_p")
+  (if tpu-advance (tpu-forward-to-word num) (tpu-backward-to-word num)))
+
+(defun tpu-forward-to-word (num)
+  "Move forward until encountering the beginning of a word.
+With argument, do this that many times."
+  (interactive "_p")
+  (while (and (> num 0) (not (eobp)))
+    (let* ((beg (point))
+	   (end (prog2 (end-of-line) (point) (goto-char beg))))
+      (cond ((eolp)
+	     (forward-char 1))
+	    ((memq (char-after (point)) tpu-word-separator-list)
+	     (forward-char 1)
+	     (skip-chars-forward " \t" end))
+	    (t
+	     (skip-chars-forward tpu-skip-chars end)
+	     (skip-chars-forward " \t" end))))
+    (setq num (1- num))))
+
+(defun tpu-backward-to-word (num)
+  "Move backward until encountering the beginning of a word.
+With argument, do this that many times."
+  (interactive "_p")
+  (while (and (> num 0) (not (bobp)))
+    (let* ((beg (point))
+	   (end (prog2 (beginning-of-line) (point) (goto-char beg))))
+      (cond ((bolp)
+	     ( forward-char -1))
+	    ((memq (char-after (1- (point)))  tpu-word-separator-list)
+	     (forward-char -1))
+	    (t
+	     (skip-chars-backward " \t" end)
+	     (skip-chars-backward tpu-skip-chars end)
+	     (if (and (not (bolp)) (= ?  (char-syntax (char-after (point)))))
+		 (forward-char -1)))))
+    (setq num (1- num))))
+
+(defun tpu-add-word-separators (separators)
+  "Add new word separators for TPU-edt word commands."
+  (interactive "_sSeparators: ")
+  (let* ((n 0) (length (length separators)))
+    (while (< n length)
+      (let ((char (aref separators n))
+	    (ss (substring separators n (1+ n))))
+	(cond ((not (memq char tpu-word-separator-list))
+	       (setq tpu-word-separator-list
+		     (append ss tpu-word-separator-list))
+	       (cond ((= char ?-)
+		      (setq tpu-skip-chars (concat tpu-skip-chars "\\-")))
+		     ((= char ?\\)
+		      (setq tpu-skip-chars (concat tpu-skip-chars "\\\\")))
+		     ((= char ?^)
+		      (setq tpu-skip-chars (concat tpu-skip-chars "\\^")))
+		     (t
+		      (setq tpu-skip-chars (concat tpu-skip-chars ss))))))
+	(setq n (1+ n))))))
+
+(defun tpu-reset-word-separators nil
+  "Reset word separators to default value."
+  (interactive "_")
+  (setq tpu-word-separator-list nil)
+  (setq tpu-skip-chars "^ \t"))
+
+(defun tpu-set-word-separators (separators)
+  "Set new word separators for TPU-edt word commands."
+  (interactive "_sSeparators: ")
+  (tpu-reset-word-separators)
+  (tpu-add-word-separators separators))
+
+
+;;;
+;;;  Movement by line
+;;;
+(defun tpu-next-line (num)
+  "Move to next line.
+Prefix argument serves as a repeat count."
+  (interactive "_p")
+  (next-line-internal num)
+  (setq this-command 'next-line))
+
+(defun tpu-previous-line (num)
+  "Move to previous line.
+Prefix argument serves as a repeat count."
+  (interactive "_p")
+  (next-line-internal (- num))
+  (setq this-command 'previous-line))
+
+(defun tpu-next-beginning-of-line (num)
+  "Move to beginning of line; if at beginning, move to beginning of next line.
+Accepts a prefix argument for the number of lines to move."
+  (interactive "_p")
+  (backward-char 1)
+  (forward-line (- 1 num)))
+
+(defun tpu-end-of-line (num)
+  "Move to the next end of line in the current direction.
+A repeat count means move that many lines."
+  (interactive "_p")
+  (if tpu-advance (tpu-next-end-of-line num) (tpu-previous-end-of-line num)))
+
+(defun tpu-next-end-of-line (num)
+  "Move to end of line; if at end, move to end of next line.
+Accepts a prefix argument for the number of lines to move."
+  (interactive "_p")
+  (forward-char 1)
+  (end-of-line num))
+
+(defun tpu-previous-end-of-line (num)
+  "Move EOL upward.
+Accepts a prefix argument for the number of lines to move."
+  (interactive "_p")
+  (end-of-line (- 1 num)))
+
+(defun tpu-current-end-of-line nil
+  "Move point to end of current line."
+  (interactive "_")
+  (let ((beg (point)))
+    (end-of-line)
+    (if (= beg (point)) (message "You are already at the end of a line."))))
+
+(defun tpu-line (num)
+  "Move to the beginning of the next line in the current direction.
+A repeat count means move that many lines."
+  (interactive "_p")
+  (if tpu-advance (tpu-forward-line num) (tpu-backward-line num)))
+
+(defun tpu-forward-line (num)
+  "Move to beginning of next line.
+Prefix argument serves as a repeat count."
+  (interactive "_p")
+  (forward-line num))
+
+(defun tpu-backward-line (num)
+  "Move to beginning of previous line.
+Prefix argument serves as repeat count."
+  (interactive "_p")
+  (forward-line (- num)))
+
+
+;;;
+;;;  Movement by paragraph
+;;;
+(defun tpu-paragraph (num)
+  "Move to the next paragraph in the current direction.
+A repeat count means move that many paragraphs."
+  (interactive "_p")
+  (if tpu-advance
+      (tpu-next-paragraph num) (tpu-previous-paragraph num)))
+
+(defun tpu-next-paragraph (num)
+  "Move to beginning of the next paragraph.
+Accepts a prefix argument for the number of paragraphs."
+  (interactive "_p")
+  (beginning-of-line)
+  (while (and (not (eobp)) (> num 0))
+    (if (re-search-forward "^[ \t]*$" nil t)
+	(if (re-search-forward "[^ \t\n]" nil t)
+	    (goto-char (match-beginning 0))
+	  (goto-char (point-max))))
+    (setq num (1- num)))
+  (beginning-of-line))
+
+
+(defun tpu-previous-paragraph (num)
+  "Move to beginning of previous paragraph.
+Accepts a prefix argument for the number of paragraphs."
+  (interactive "_p")
+  (end-of-line)
+  (while (and (not (bobp)) (> num 0))
+    (if (not (and (re-search-backward "^[ \t]*$" nil t)
+		  (re-search-backward "[^ \t\n]" nil t)
+		  (re-search-backward "^[ \t]*$" nil t)
+		  (progn (re-search-forward "[^ \t\n]" nil t)
+			 (goto-char (match-beginning 0)))))
+	(goto-char (point-min)))
+    (setq num (1- num)))
+  (beginning-of-line))
+
+
+;;;
+;;;  Movement by page
+;;;
+(defun tpu-page (num)
+  "Move to the next page in the current direction.
+A repeat count means move that many pages."
+  (interactive "_p")
+  (if tpu-advance (forward-page num) (backward-page num))
+  (if (eobp) (recenter -1)))
+
+
+;;;
+;;;  Scrolling and movement within the buffer
+;;;
+(defun tpu-scroll-window (num)
+  "Scroll the display to the next section in the current direction.
+A repeat count means scroll that many sections."
+  (interactive "_p")
+  (if tpu-advance (tpu-scroll-window-up num) (tpu-scroll-window-down num)))
+
+(defun tpu-scroll-window-down (num)
+  "Scroll the display down to the next section.
+A repeat count means scroll that many sections."
+  (interactive "_p")
+  (let* ((beg (tpu-current-line))
+	 (height (1- (window-height)))
+	 (lines (* num (/ (* height tpu-percent-scroll) 100))))
+    (next-line-internal (- lines))
+    (if (> lines beg) (recenter 0))))
+
+(defun tpu-scroll-window-up (num)
+  "Scroll the display up to the next section.
+A repeat count means scroll that many sections."
+  (interactive "_p")
+  (let* ((beg (tpu-current-line))
+	 (height (1- (window-height)))
+	 (lines (* num (/ (* height tpu-percent-scroll) 100))))
+    (next-line-internal lines)
+    (if (>= (+ lines beg) height) (recenter -1))))
+
+(defun tpu-pan-right (num)
+  "Pan right tpu-pan-columns (16 by default).
+Accepts a prefix argument for the number of tpu-pan-columns to scroll."
+  (interactive "_p")
+  (scroll-left (* tpu-pan-columns num)))
+
+(defun tpu-pan-left (num)
+  "Pan left tpu-pan-columns (16 by default).
+Accepts a prefix argument for the number of tpu-pan-columns to scroll."
+  (interactive "_p")
+  (scroll-right (* tpu-pan-columns num)))
+
+(defun tpu-move-to-beginning nil
+  "Move cursor to the beginning of buffer, but don't set the mark."
+  (interactive "_")
+  (goto-char (point-min)))
+
+(defun tpu-move-to-end nil
+  "Move cursor to the end of buffer, but don't set the mark."
+  (interactive "_")
+  (goto-char (point-max))
+  (recenter -1))
+
+(defun tpu-goto-percent (perc)
+  "Move point to ARG percentage of the buffer."
+  (interactive "_NGoto-percentage: ")
+  (if (or (> perc 100) (< perc 0))
+      (error "Percentage %d out of range 0 < percent < 100" perc)
+    (goto-char (/ (* (point-max) perc) 100))))
+
+(defun tpu-beginning-of-window nil
+  "Move cursor to top of window."
+  (interactive "_")
+  (move-to-window-line 0))
+
+(defun tpu-end-of-window nil
+  "Move cursor to bottom of window."
+  (interactive "_")
+  (move-to-window-line -1))
+
+(defun tpu-line-to-bottom-of-window nil
+  "Move the current line to the bottom of the window."
+  (interactive "_")
+  (recenter -1))
+
+(defun tpu-line-to-top-of-window nil
+  "Move the current line to the top of the window."
+  (interactive "_")
+  (recenter 0))
+
+
+;;;
+;;;  Direction
+;;;
+(defun tpu-advance-direction nil
+  "Set TPU Advance mode so keypad commands move forward."
+  (interactive "_")
+  (setq tpu-direction-string " Advance")
+  (setq tpu-advance t)
+  (setq tpu-reverse nil)
+  (tpu-set-search)
+  (tpu-update-mode-line))
+
+(defun tpu-backup-direction nil
+  "Set TPU Backup mode so keypad commands move backward."
+  (interactive "_")
+  (setq tpu-direction-string " Reverse")
+  (setq tpu-advance nil)
+  (setq tpu-reverse t)
+  (tpu-set-search)
+  (tpu-update-mode-line))
+
+
+;;;
+;;;  Define keymaps
+;;;
+(define-key global-map "\e[" CSI-map)                         ; CSI map
+(define-key global-map "\eO" SS3-map)                         ; SS3 map
+(define-key SS3-map "P" GOLD-map)                             ; GOLD map
+(define-key GOLD-map "\e[" GOLD-CSI-map)                      ; GOLD-CSI map
+(define-key GOLD-map "\eO" GOLD-SS3-map)                      ; GOLD-SS3 map
+
+
+;;;
+;;;  CSI-map key definitions
+;;;
+(define-key CSI-map "A" 'tpu-previous-line)                   ; up
+(define-key CSI-map "B" 'tpu-next-line)                       ; down
+(define-key CSI-map "D" 'tpu-backward-char)                   ; left
+(define-key CSI-map "C" 'tpu-forward-char)                    ; right
+
+(define-key CSI-map "1~" 'tpu-search)                         ; Find
+(define-key CSI-map "2~" 'tpu-paste)                          ; Insert Here
+(define-key CSI-map "3~" 'tpu-cut)                            ; Remove
+(define-key CSI-map "4~" 'tpu-select)                         ; Select
+(define-key CSI-map "5~" 'tpu-scroll-window-down)             ; Prev Screen
+(define-key CSI-map "6~" 'tpu-scroll-window-up)               ; Next Screen
+
+(define-key CSI-map "11~" 'nil)                               ; F1
+(define-key CSI-map "12~" 'nil)                               ; F2
+(define-key CSI-map "13~" 'nil)                               ; F3
+(define-key CSI-map "14~" 'nil)                               ; F4
+(define-key CSI-map "15~" 'nil)                               ; F5
+(define-key CSI-map "17~" 'nil)                               ; F6
+(define-key CSI-map "18~" 'nil)                               ; F7
+(define-key CSI-map "19~" 'nil)                               ; F8
+(define-key CSI-map "20~" 'nil)                               ; F9
+(define-key CSI-map "21~" 'tpu-exit)                          ; F10
+(define-key CSI-map "23~" 'tpu-insert-escape)                 ; F11 (ESC)
+(define-key CSI-map "24~" 'tpu-next-beginning-of-line)        ; F12 (BS)
+(define-key CSI-map "25~" 'tpu-delete-previous-word)          ; F13 (LF)
+(define-key CSI-map "26~" 'tpu-toggle-overwrite-mode)         ; F14
+(define-key CSI-map "28~" 'tpu-help)                          ; HELP
+(define-key CSI-map "29~" 'execute-extended-command)          ; DO
+(define-key CSI-map "31~" 'tpu-goto-breadcrumb)               ; F17
+(define-key CSI-map "32~" 'nil)                               ; F18
+(define-key CSI-map "33~" 'nil)                               ; F19
+(define-key CSI-map "34~" 'nil)                               ; F20
+
+
+;;;
+;;;  SS3-map key definitions
+;;;
+(define-key SS3-map "A" 'tpu-previous-line)                   ; up
+(define-key SS3-map "B" 'tpu-next-line)                       ; down
+(define-key SS3-map "C" 'tpu-forward-char)                    ; right
+(define-key SS3-map "D" 'tpu-backward-char)                   ; left
+
+(define-key SS3-map "Q" 'tpu-help)                            ; PF2
+(define-key SS3-map "R" 'tpu-search-again)                    ; PF3
+(define-key SS3-map "S" 'tpu-delete-current-line)             ; PF4
+(define-key SS3-map "p" 'tpu-line)                            ; KP0
+(define-key SS3-map "q" 'tpu-word)                            ; KP1
+(define-key SS3-map "r" 'tpu-end-of-line)                     ; KP2
+(define-key SS3-map "s" 'tpu-char)                            ; KP3
+(define-key SS3-map "t" 'tpu-advance-direction)               ; KP4
+(define-key SS3-map "u" 'tpu-backup-direction)                ; KP5
+(define-key SS3-map "v" 'tpu-cut)                             ; KP6
+(define-key SS3-map "w" 'tpu-page)                            ; KP7
+(define-key SS3-map "x" 'tpu-scroll-window)                   ; KP8
+(define-key SS3-map "y" 'tpu-append-region)                   ; KP9
+(define-key SS3-map "m" 'tpu-delete-current-word)             ; KP-
+(define-key SS3-map "l" 'tpu-delete-current-char)             ; KP,
+(define-key SS3-map "n" 'tpu-select)                          ; KP.
+(define-key SS3-map "M" 'newline)                             ; KPenter
+
+
+;;;
+;;;  GOLD-map key definitions
+;;;
+(define-key GOLD-map "\C-A" 'tpu-toggle-overwrite-mode)       ; ^A
+(define-key GOLD-map "\C-B" 'nil)                             ; ^B
+(define-key GOLD-map "\C-C" 'nil)                             ; ^C
+(define-key GOLD-map "\C-D" 'nil)                             ; ^D
+(define-key GOLD-map "\C-E" 'nil)                             ; ^E
+(define-key GOLD-map "\C-F" 'set-visited-file-name)           ; ^F
+(define-key GOLD-map "\C-g" 'keyboard-quit)                   ; safety first
+(define-key GOLD-map "\C-h" 'delete-other-windows)            ; BS
+(define-key GOLD-map "\C-i" 'other-window)                    ; TAB
+(define-key GOLD-map "\C-J" 'nil)                             ; ^J
+(define-key GOLD-map "\C-K" 'tpu-define-macro-key)            ; ^K
+(define-key GOLD-map "\C-l" 'downcase-region)                 ; ^L
+(define-key GOLD-map "\C-M" 'nil)                             ; ^M
+(define-key GOLD-map "\C-N" 'nil)                             ; ^N
+(define-key GOLD-map "\C-O" 'nil)                             ; ^O
+(define-key GOLD-map "\C-P" 'nil)                             ; ^P
+(define-key GOLD-map "\C-Q" 'nil)                             ; ^Q
+(define-key GOLD-map "\C-R" 'nil)                             ; ^R
+(define-key GOLD-map "\C-S" 'nil)                             ; ^S
+(define-key GOLD-map "\C-T" 'tpu-toggle-control-keys)         ; ^T
+(define-key GOLD-map "\C-u" 'upcase-region)                   ; ^U
+(define-key GOLD-map "\C-V" 'nil)                             ; ^V
+(define-key GOLD-map "\C-w" 'tpu-write-current-buffers)       ; ^W
+(define-key GOLD-map "\C-X" 'nil)                             ; ^X
+(define-key GOLD-map "\C-Y" 'nil)                             ; ^Y
+(define-key GOLD-map "\C-Z" 'nil)                             ; ^Z
+(define-key GOLD-map " " 'undo)                               ; SPC
+(define-key GOLD-map "!" 'nil)                                ; !
+(define-key GOLD-map "#" 'nil)                                ; #
+(define-key GOLD-map "$" 'tpu-add-at-eol)                     ; $
+(define-key GOLD-map "%" 'tpu-goto-percent)                   ; %
+(define-key GOLD-map "&" 'nil)                                ; &
+(define-key GOLD-map "(" 'nil)                                ; (
+(define-key GOLD-map ")" 'nil)                                ; )
+(define-key GOLD-map "*" 'tpu-toggle-regexp)                  ; *
+(define-key GOLD-map "+" 'nil)                                ; +
+(define-key GOLD-map "," 'tpu-goto-breadcrumb)                ; ,
+(define-key GOLD-map "-" 'negative-argument)                  ; -
+(define-key GOLD-map "." 'tpu-drop-breadcrumb)                ; .
+(define-key GOLD-map "/" 'tpu-emacs-replace)                  ; /
+(define-key GOLD-map "0" 'digit-argument)                     ; 0
+(define-key GOLD-map "1" 'digit-argument)                     ; 1
+(define-key GOLD-map "2" 'digit-argument)                     ; 2
+(define-key GOLD-map "3" 'digit-argument)                     ; 3
+(define-key GOLD-map "4" 'digit-argument)                     ; 4
+(define-key GOLD-map "5" 'digit-argument)                     ; 5
+(define-key GOLD-map "6" 'digit-argument)                     ; 6
+(define-key GOLD-map "7" 'digit-argument)                     ; 7
+(define-key GOLD-map "8" 'digit-argument)                     ; 8
+(define-key GOLD-map "9" 'digit-argument)                     ; 9
+(define-key GOLD-map ":" 'nil)                                ; :
+(define-key GOLD-map ";" 'tpu-trim-line-ends)                 ; ;
+(define-key GOLD-map "<" 'nil)                                ; <
+(define-key GOLD-map "=" 'nil)                                ; =
+(define-key GOLD-map ">" 'nil)                                ; >
+(define-key GOLD-map "?" 'tpu-spell-check)                    ; ?
+(define-key GOLD-map "A" 'tpu-toggle-newline-and-indent)      ; A
+(define-key GOLD-map "B" 'tpu-next-buffer)                    ; B
+(define-key GOLD-map "C" 'repeat-complex-command)             ; C
+(define-key GOLD-map "D" 'shell-command)                      ; D
+(define-key GOLD-map "E" 'tpu-exit)                           ; E
+(define-key GOLD-map "F" 'tpu-set-cursor-free)                ; F
+(define-key GOLD-map "G" 'tpu-get)                            ; G
+(define-key GOLD-map "H" 'nil)                                ; H
+(define-key GOLD-map "I" 'tpu-include)                        ; I
+(define-key GOLD-map "K" 'tpu-kill-buffer)                    ; K
+(define-key GOLD-map "L" 'tpu-what-line)                      ; L
+(define-key GOLD-map "M" 'buffer-menu)                        ; M
+(define-key GOLD-map "N" 'tpu-next-file-buffer)               ; N
+(define-key GOLD-map "O" 'occur)                              ; O
+(define-key GOLD-map "P" 'lpr-buffer)                         ; P
+(define-key GOLD-map "Q" 'tpu-quit)                           ; Q
+(define-key GOLD-map "R" 'tpu-toggle-rectangle)               ; R
+(define-key GOLD-map "S" 'replace)                            ; S
+(define-key GOLD-map "T" 'tpu-line-to-top-of-window)          ; T
+(define-key GOLD-map "U" 'undo)                               ; U
+(define-key GOLD-map "V" 'tpu-version)                        ; V
+(define-key GOLD-map "W" 'save-buffer)                        ; W
+(define-key GOLD-map "X" 'tpu-save-all-buffers-kill-emacs)    ; X
+(define-key GOLD-map "Y" 'copy-region-as-kill)                ; Y
+(define-key GOLD-map "Z" 'suspend-emacs)                      ; Z
+(define-key GOLD-map "[" 'blink-matching-open)                ; [
+(define-key GOLD-map "\\" 'nil)                               ; \
+(define-key GOLD-map "]" 'blink-matching-open)                ; ]
+(define-key GOLD-map "^" 'tpu-add-at-bol)                     ; ^
+(define-key GOLD-map "_" 'split-window-vertically)            ; -
+(define-key GOLD-map "`" 'what-line)                          ; `
+(define-key GOLD-map "a" 'tpu-toggle-newline-and-indent)      ; a
+(define-key GOLD-map "b" 'tpu-next-buffer)                    ; b
+(define-key GOLD-map "c" 'repeat-complex-command)             ; c
+(define-key GOLD-map "d" 'shell-command)                      ; d
+(define-key GOLD-map "e" 'tpu-exit)                           ; e
+(define-key GOLD-map "f" 'tpu-set-cursor-free)                ; f
+(define-key GOLD-map "g" 'tpu-get)                            ; g
+(define-key GOLD-map "h" 'nil)                                ; h
+(define-key GOLD-map "i" 'tpu-include)                        ; i
+(define-key GOLD-map "k" 'tpu-kill-buffer)                    ; k
+(define-key GOLD-map "l" 'goto-line)                          ; l
+(define-key GOLD-map "m" 'buffer-menu)                        ; m
+(define-key GOLD-map "n" 'tpu-next-file-buffer)               ; n
+(define-key GOLD-map "o" 'occur)                              ; o
+(define-key GOLD-map "p" 'lpr-region)                         ; p
+(define-key GOLD-map "q" 'tpu-quit)                           ; q
+(define-key GOLD-map "r" 'tpu-toggle-rectangle)               ; r
+(define-key GOLD-map "s" 'replace)                            ; s
+(define-key GOLD-map "t" 'tpu-line-to-top-of-window)          ; t
+(define-key GOLD-map "u" 'undo)                               ; u
+(define-key GOLD-map "v" 'tpu-version)                        ; v
+(define-key GOLD-map "w" 'save-buffer)                        ; w
+(define-key GOLD-map "x" 'tpu-save-all-buffers-kill-emacs)    ; x
+(define-key GOLD-map "y" 'copy-region-as-kill)                ; y
+(define-key GOLD-map "z" 'suspend-emacs)                      ; z
+(define-key GOLD-map "{" 'nil)                                ; {
+(define-key GOLD-map "|" 'split-window-horizontally)          ; |
+(define-key GOLD-map "}" 'nil)                                ; }
+(define-key GOLD-map "~" 'exchange-point-and-mark)            ; ~
+(define-key GOLD-map "\177" 'delete-window)                   ; <X]
+
+
+;;;
+;;;  GOLD-CSI-map key definitions
+;;;
+(define-key GOLD-CSI-map "A" 'tpu-move-to-beginning)          ; up-arrow
+(define-key GOLD-CSI-map "B" 'tpu-move-to-end)                ; down-arrow
+(define-key GOLD-CSI-map "C" 'end-of-line)                    ; right-arrow
+(define-key GOLD-CSI-map "D" 'beginning-of-line)              ; left-arrow
+
+(define-key GOLD-CSI-map "1~" 'nil)                           ; Find
+(define-key GOLD-CSI-map "2~" 'nil)                           ; Insert Here
+(define-key GOLD-CSI-map "3~" 'tpu-store-text)                ; Remove
+(define-key GOLD-CSI-map "4~" 'tpu-unselect)                  ; Select
+(define-key GOLD-CSI-map "5~" 'tpu-previous-window)           ; Prev Screen
+(define-key GOLD-CSI-map "6~" 'tpu-next-window)               ; Next Screen
+
+(define-key GOLD-CSI-map "11~" 'nil)                          ; F1
+(define-key GOLD-CSI-map "12~" 'nil)                          ; F2
+(define-key GOLD-CSI-map "13~" 'nil)                          ; F3
+(define-key GOLD-CSI-map "14~" 'nil)                          ; F4
+(define-key GOLD-CSI-map "16~" 'nil)                          ; F5
+(define-key GOLD-CSI-map "17~" 'nil)                          ; F6
+(define-key GOLD-CSI-map "18~" 'nil)                          ; F7
+(define-key GOLD-CSI-map "19~" 'nil)                          ; F8
+(define-key GOLD-CSI-map "20~" 'nil)                          ; F9
+(define-key GOLD-CSI-map "21~" 'nil)                          ; F10
+(define-key GOLD-CSI-map "23~" 'nil)                          ; F11
+(define-key GOLD-CSI-map "24~" 'nil)                          ; F12
+(define-key GOLD-CSI-map "25~" 'nil)                          ; F13
+(define-key GOLD-CSI-map "26~" 'nil)                          ; F14
+(define-key GOLD-CSI-map "28~" 'describe-bindings)            ; HELP
+(define-key GOLD-CSI-map "29~" 'nil)                          ; DO
+(define-key GOLD-CSI-map "31~" 'tpu-drop-breadcrumb)          ; F17
+(define-key GOLD-CSI-map "32~" 'nil)                          ; F18
+(define-key GOLD-CSI-map "33~" 'nil)                          ; F19
+(define-key GOLD-CSI-map "34~" 'nil)                          ; F20
+
+
+;;;
+;;;  GOLD-SS3-map key definitions
+;;;
+(define-key GOLD-SS3-map "A" 'tpu-move-to-beginning)          ; up-arrow
+(define-key GOLD-SS3-map "B" 'tpu-move-to-end)                ; down-arrow
+(define-key GOLD-SS3-map "C" 'end-of-line)                    ; right-arrow
+(define-key GOLD-SS3-map "D" 'beginning-of-line)              ; left-arrow
+
+(define-key GOLD-SS3-map "P" 'keyboard-quit)                  ; PF1
+(define-key GOLD-SS3-map "Q" 'help-for-help)                  ; PF2
+(define-key GOLD-SS3-map "R" 'tpu-search)                     ; PF3
+(define-key GOLD-SS3-map "S" 'tpu-undelete-lines)             ; PF4
+(define-key GOLD-SS3-map "p" 'open-line)                      ; KP0
+(define-key GOLD-SS3-map "q" 'tpu-change-case)                ; KP1
+(define-key GOLD-SS3-map "r" 'tpu-delete-to-eol)              ; KP2
+(define-key GOLD-SS3-map "s" 'tpu-special-insert)             ; KP3
+(define-key GOLD-SS3-map "t" 'tpu-move-to-end)                ; KP4
+(define-key GOLD-SS3-map "u" 'tpu-move-to-beginning)          ; KP5
+(define-key GOLD-SS3-map "v" 'tpu-paste)                      ; KP6
+(define-key GOLD-SS3-map "w" 'execute-extended-command)       ; KP7
+(define-key GOLD-SS3-map "x" 'tpu-fill)                       ; KP8
+(define-key GOLD-SS3-map "y" 'tpu-replace)                    ; KP9
+(define-key GOLD-SS3-map "m" 'tpu-undelete-words)             ; KP-
+(define-key GOLD-SS3-map "l" 'tpu-undelete-char)              ; KP,
+(define-key GOLD-SS3-map "n" 'tpu-unselect)                   ; KP.
+(define-key GOLD-SS3-map "M" 'tpu-substitute)                 ; KPenter
+
+
+;;;
+;;;  Repeat complex command map additions to make arrows work
+;;;
+(cond ((boundp 'repeat-complex-command-map)
+       (define-key repeat-complex-command-map "\e[A" 'previous-complex-command)
+       (define-key repeat-complex-command-map "\e[B" 'next-complex-command)
+       (define-key repeat-complex-command-map "\eOA" 'previous-complex-command)
+       (define-key repeat-complex-command-map "\eOB" 'next-complex-command)))
+
+
+;;;
+;;;  Minibuffer map additions to make KP_enter = RET
+;;;
+(define-key minibuffer-local-map "\eOM" 'exit-minibuffer)
+(define-key minibuffer-local-ns-map "\eOM" 'exit-minibuffer)
+(define-key minibuffer-local-completion-map "\eOM" 'exit-minibuffer)
+(define-key minibuffer-local-must-match-map "\eOM" 
+'minibuffer-complete-and-exit)
+(and (boundp 'repeat-complex-command-map)
+     (define-key repeat-complex-command-map "\eOM" 'exit-minibuffer))
+
+
+;;;
+;;;  Map control keys
+;;;
+(define-key global-map "\C-\\" 'quoted-insert)                ; ^\
+(define-key global-map "\C-a" 'tpu-toggle-overwrite-mode)     ; ^A
+(define-key global-map "\C-b" 'repeat-complex-command)        ; ^B
+(define-key global-map "\C-e" 'tpu-current-end-of-line)       ; ^E
+(define-key global-map "\C-h" 'tpu-next-beginning-of-line)    ; ^H (BS)
+(define-key global-map "\C-j" 'tpu-delete-previous-word)      ; ^J (LF)
+(define-key global-map "\C-k" 'tpu-define-macro-key)          ; ^K
+(define-key global-map "\C-l" 'tpu-insert-formfeed)           ; ^L (FF)
+(define-key global-map "\C-r" 'recenter)                      ; ^R
+(define-key global-map "\C-u" 'tpu-delete-to-bol)             ; ^U
+(define-key global-map "\C-v" 'tpu-quoted-insert)             ; ^V
+(define-key global-map "\C-w" 'redraw-display)                ; ^W
+(define-key global-map "\C-z" 'tpu-exit)                      ; ^Z
+
+
+;;;
+;;;  Functions to reset and toggle the control key bindings
+;;;
+(defun tpu-reset-control-keys (tpu-style)
+  "Set control keys to TPU or emacs style functions."
+  (let* ((tpu   (and tpu-style (not tpu-control-keys)))
+	 (emacs (and (not tpu-style) tpu-control-keys))
+	 (doit  (or tpu emacs)))
+    (cond (doit
+	   (if emacs (setq tpu-global-map (copy-keymap global-map)))
+	   (let ((map (if tpu
+			  (copy-keymap tpu-global-map)
+			(copy-keymap tpu-original-global-map))))
+
+ 	     (define-key global-map "\C-\\" (lookup-key map "\C-\\"))   ; ^\
+ 	     (define-key global-map "\C-a" (lookup-key map "\C-a"))     ; ^A
+ 	     (define-key global-map "\C-b" (lookup-key map "\C-b"))     ; ^B
+ 	     (define-key global-map "\C-e" (lookup-key map "\C-e"))     ; ^E
+	     (define-key global-map "\C-h" (lookup-key map "\C-h"))     ; ^H (BS)
+	     (define-key global-map "\C-j" (lookup-key map "\C-j"))     ; ^J (LF)
+	     (define-key global-map "\C-k" (lookup-key map "\C-k"))     ; ^K
+	     (define-key global-map "\C-l" (lookup-key map "\C-l"))     ; ^L (FF)
+	     (define-key global-map "\C-r" (lookup-key map "\C-r"))     ; ^R
+	     (define-key global-map "\C-u" (lookup-key map "\C-u"))     ; ^U
+	     (define-key global-map "\C-v" (lookup-key map "\C-v"))     ; ^V
+	     (define-key global-map "\C-w" (lookup-key map "\C-w"))     ; ^W
+	     (define-key global-map "\C-z" (lookup-key map "\C-z"))     ; ^Z
+	     (setq tpu-control-keys tpu-style))))))
+
+(defun tpu-toggle-control-keys nil
+  "Toggles control key bindings between TPU-edt and Emacs."
+  (interactive "_")
+  (tpu-reset-control-keys (not tpu-control-keys))
+  (and (interactive-p)
+       (message "Control keys function with %s bindings."
+		(if tpu-control-keys "TPU-edt" "Emacs"))))
+
+
+;;;
+;;;  Emacs version 19 minibuffer history support
+;;;
+(defun tpu-next-history-element (n)
+  "Insert the next element of the minibuffer history into the minibuffer."
+  (interactive "_p")
+  (next-history-element n)
+  (goto-char (point-max)))
+
+(defun tpu-previous-history-element (n)
+  "Insert the previous element of the minibuffer history into the minibuffer."
+  (interactive "_p")
+  (previous-history-element n)
+  (goto-char (point-max)))
+
+(defun tpu-arrow-history nil
+  "Modify minibuffer maps to use arrows for history recall."
+  (interactive "_")
+  (let ((loc (where-is-internal 'tpu-previous-line)) (cur nil))
+    (while (setq cur (car loc))
+      (define-key read-expression-map cur 'tpu-previous-history-element)
+      (define-key minibuffer-local-map cur 'tpu-previous-history-element)
+      (define-key minibuffer-local-ns-map cur 'tpu-previous-history-element)
+      (define-key minibuffer-local-completion-map cur 
+'tpu-previous-history-element)
+      (define-key minibuffer-local-must-match-map cur 
+'tpu-previous-history-element)
+      (setq loc (cdr loc)))
+
+    (setq loc (where-is-internal 'tpu-next-line))
+    (while (setq cur (car loc))
+      (define-key read-expression-map cur 'tpu-next-history-element)
+      (define-key minibuffer-local-map cur 'tpu-next-history-element)
+      (define-key minibuffer-local-ns-map cur 'tpu-next-history-element)
+      (define-key minibuffer-local-completion-map cur 
+'tpu-next-history-element)
+      (define-key minibuffer-local-must-match-map cur 
+'tpu-next-history-element)
+      (setq loc (cdr loc)))))
+
+
+;;;
+;;;  Emacs version 19 X-windows key definition support
+;;;
+(defun tpu-load-xkeys (file)
+  "Load the TPU-edt X-windows key definitions FILE.
+If FILE is nil, try to load a default file.  The default file names are
+~/.tpu-xemacs-keys for XEmacs emacs, and ~/.tpu-gnu-keys for GNU emacs."
+  (interactive "_fX key definition file: ")
+  (cond (file
+	 (setq file (expand-file-name file)))
+	(tpu-xkeys-file
+	 (setq file (expand-file-name tpu-xkeys-file)))
+	(tpu-gnu-emacs19-p
+	 (setq file (expand-file-name "~/.tpu-gnu-keys")))
+	(tpu-xemacs-emacs19-p
+	 (setq file (expand-file-name "~/.tpu-xemacs-keys"))))
+  (cond ((file-readable-p file)
+	 (load-file file))
+	(t
+	 (switch-to-buffer "*scratch*")
+	 (erase-buffer)
+	 (insert "
+
+     Ack!!  You're running TPU-edt under X-windows without loading an
+     X  key definition file.   To create a  TPU-edt X  key definition
+     file, run the tpu-mapper.el program.  It  came with TPU-edt.  It
+     even includes directions on how to  use it!  Perhaps it's laying
+     around here someplace.  ")
+	 (let ((file "tpu-mapper.el")
+	       (found nil)
+	       (path nil)
+	       (search-list (append (list (expand-file-name ".")) load-path)))
+	   (while (and (not found) search-list)
+	     (setq path (concat (car search-list)
+				(if (string-match "/$" (car search-list)) "" "/")
+				file))
+	     (if (and (file-exists-p path) (not (file-directory-p path)))
+		 (setq found t))
+	     (setq search-list (cdr search-list)))
+	   (cond (found
+		  (insert (format
+			   "Ah yes, there it is, in \n\n       %s \n\n" path))
+		  (if (tpu-y-or-n-p "Do you want to run it now? ")
+		      (load-file path)))
+		 (t
+		  (insert "Nope, I can't seem to find it.  :-(\n\n")
+		  (sit-for 120)))))))
+
+
+;;;
+;;;  Start and Stop TPU-edt
+;;;
+;;;###autoload
+(defun tpu-edt-on nil
+  "Turn on TPU/edt emulation."
+  (interactive)
+  (cond
+   ((not tpu-edt-mode)
+    ;; we use picture-mode functions
+    (require 'picture)
+    (tpu-reset-control-keys t)
+    (cond (tpu-emacs19-p
+	   (and window-system (tpu-load-xkeys nil))
+	   (tpu-arrow-history))
+	  (t
+	   ;; define ispell functions
+	   (autoload 'ispell-word "ispell" "Check spelling of word at or before 
+point" t)
+	   (autoload 'ispell-complete-word "ispell" "Complete word at or before 
+point" t)
+	   (autoload 'ispell-buffer "ispell" "Check spelling of entire buffer" t)
+	   (autoload 'ispell-region "ispell" "Check spelling of region" t)))
+    (tpu-set-mode-line t)
+    (tpu-advance-direction)
+    ;; set page delimiter, display line truncation, and scrolling like TPU
+    (setq-default page-delimiter "\f")
+    (setq-default truncate-lines t)
+    (setq scroll-step 1)
+    (setq tpu-edt-mode t))))
+
+(defun tpu-edt-off nil
+  "Turn off TPU/edt emulation.  Note that the keypad is left on."
+  (interactive)
+  (cond
+   (tpu-edt-mode
+    (tpu-reset-control-keys nil)
+    (tpu-set-mode-line nil)
+    (setq-default page-delimiter "^\f")
+    (setq-default truncate-lines nil)
+    (setq scroll-step 0)
+    (use-global-map global-map)
+    (setq tpu-edt-mode nil))))
+
+
+;;;
+;;;  Turn on TPU-edt and announce it as a feature
+;;;
+(tpu-edt-mode)
+
+(provide 'tpu-edt)
+
+;;; tpu-edt.el ends here