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diff --git a/lisp/cus-start.el b/lisp/cus-start.el
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+;;; cus-start.el --- define customization properties of builtins.
+;;
+;; Copyright (C) 1997 Free Software Foundation, Inc.
+;;
+;; Author: Per Abrahamsen <abraham@dina.kvl.dk>
+;; Keywords: internal
+
+;;; Commentary:
+;;
+;; Must be run before the user has changed the value of any options!
+
+;;; Code:
+
+(defun custom-start-quote (sexp)
+  ;; This is copied from `cus-edit.el'.
+  "Quote SEXP iff it is not self quoting."
+  (if (or (memq sexp '(t nil))
+	  (and (symbolp sexp)
+	       (eq (aref (symbol-name sexp) 0) ?:))
+	  (and (listp sexp)
+	       (memq (car sexp) '(lambda)))
+	  (stringp sexp)
+	  (numberp sexp)
+	  (and (fboundp 'characterp)
+	       (characterp sexp)))
+      sexp
+    (list 'quote sexp)))
+
+(let ((all '(;; abbrev.c 
+	     (abbrev-all-caps abbrev-mode boolean)
+	     (pre-abbrev-expand-hook abbrev-mode hook)
+	     ;; alloc.c
+	     (gc-cons-threshold alloc integer)
+	     (undo-limit undo integer)
+	     (undo-strong-limit undo integer)
+	     (garbage-collection-messages alloc boolean)
+	     ;; buffer.c
+	     (mode-line-format modeline sexp) ;Hard to do right.
+	     (default-major-mode internal function)
+	     (case-fold-search matching boolean)
+	     (fill-column fill integer)
+	     (left-margin fill integer)
+	     (tab-width editing-basics integer)
+	     (ctl-arrow display boolean)
+	     (truncate-lines display boolean)
+	     (selective-display display 
+				(choice (const :tag "off" nil)
+					(integer :tag "space"
+						 :format "%v"
+						 1)
+					(const :tag "on" t)))
+	     (selective-display-ellipses display boolean)
+	     (transient-mark-mode editing-basics boolean)
+	     ;; callint.c
+	     (mark-even-if-inactive editing-basics boolean)
+	     ;; callproc.c
+	     (shell-file-name execute file)
+	     (exec-path execute
+			(repeat (choice (const :tag "default" nil)
+					(file :format "%v"))))
+	     ;; dired.c
+	     (completion-ignored-extensions dired 
+					    (repeat (string :format "%v")))
+	     ;; dispnew.el
+	     (baud-rate display integer)
+	     (inverse-video display boolean)
+	     (visible-bell display boolean)
+	     (no-redraw-on-reenter display boolean)
+	     ;; editfns.c
+	     (user-full-name mail string)
+	     ;; eval.c
+	     (max-specpdl-size limits integer)
+	     (max-lisp-eval-depth limits integer)
+	     (stack-trace-on-error debug
+				   (choice (const :tag "off")
+					   (repeat :menu-tag "When"
+						   :value (nil)
+						   (symbol :format "%v"))
+					   (const :tag "always" t)))
+	     (debug-on-error debug 
+			     (choice (const :tag "off")
+				     (repeat :menu-tag "When"
+					     :value (nil)
+					     (symbol :format "%v"))
+				     (const :tag "always" t)))
+	     (debug-ignored-errors debug (repeat (choice symbol regexp)))
+	     (debug-on-quit debug choice)
+	     ;; fileio.c
+	     (insert-default-directory minibuffer boolean)
+	     ;; frame.c
+	     (default-frame-alist frames
+	       (repeat (cons :format "%v"
+			     (symbol :tag "Parameter")
+			     (sexp :tag "Value"))))
+	     ;; indent.c
+	     (indent-tabs-mode fill boolean)
+	     ;; keyboard.c
+	     (meta-prefix-char keyboard character)
+	     (auto-save-interval auto-save integer)
+	     (auto-save-timeout auto-save (choice (const :tag "off" nil)
+						  (integer :format "%v")))
+	     (echo-keystrokes minibuffer boolean)
+	     (polling-period keyboard integer)
+	     (double-click-time mouse integer)
+	     (inhibit-local-menu-bar-menus menu boolean)
+	     (help-char keyboard character)
+	     (help-event-list keyboard (repeat (sexp :format "%v")))
+	     (menu-prompting menu boolean)
+	     (track-mouse mouse boolean)
+	     (suggest-key-bindings keyboard (choice (const :tag "off" nil)
+						    (integer :tag "time" 2)
+						    (sexp :tag "on"
+							  :format "%t")))
+	     ;; lread.c
+	     (load-path environment 
+			(repeat (choice :tag "Directory"
+					(const :tag "default" nil)
+					(directory :format "%v"))))
+	     ;; minibuf.c
+	     (completion-auto-help minibuffer boolean)
+	     (enable-recursive-minibuffers minibuffer boolean)
+	     (minibuffer-auto-raise minibuffer boolean)
+	     ;; process.c
+	     (delete-exited-processes proces-basics boolean)
+	     ;; syntax.c
+	     (parse-sexp-ignore-comments editing-basics boolean)
+	     (words-include-escapes editing-basics boolean)
+	     ;; window.c
+	     (temp-buffer-show-function windows function)
+	     (display-buffer-function windows function)
+	     (pop-up-frames frames boolean)
+	     (pop-up-frame-function frames function)
+	     (special-display-buffer-names 
+	      frames 
+	      (repeat (choice :tag "Buffer"
+			      :value ""
+			      (string :format "%v")
+			      (cons :tag "With attributes"
+				    :format "%v"
+				    :value ("" . nil)
+				    (string :format "%v")
+				    (repeat :tag "Attributes"
+					    (cons :format "%v"
+						  (symbol :tag "Parameter")
+						  (sexp :tag "Value")))))))
+	     (special-display-regexps
+	      frames 
+	      (repeat (choice :tag "Buffer"
+			      :value ""
+			      (regexp :format "%v")
+			      (cons :tag "With attributes"
+				    :format "%v"
+				    :value ("" . nil)
+				    (regexp :format "%v")
+				    (repeat :tag "Attributes"
+					    (cons :format "%v"
+						  (symbol :tag "Parameter")
+						  (sexp :tag "Value")))))))
+	     (special-display-function frames function)
+	     (same-window-buffer-names windows (repeat (string :format "%v")))
+	     (same-window-regexps windows (repeat (regexp :format "%v")))
+	     (pop-up-windows windows boolean)
+	     (next-screen-context-lines windows boolean)
+	     (split-height-threshold windows integer)
+	     (window-min-height windows integer)
+	     (window-min-width windows integer)
+	     ;; xdisp.c
+	     (scroll-step windows integer)
+	     (truncate-partial-width-windows display boolean)
+	     (mode-line-inverse-video modeline boolean)
+	     (line-number-display-limit display integer)
+	     (highlight-nonselected-windows display boolean)
+	     (message-log-max debug (choice (const :tag "Disable" nil)
+					    (integer :menu-tag "lines"
+						     :format "%v")
+					    (const :tag "Unlimited" t)))
+	     ;; xfns.c
+	     (x-bitmap-file-path installation
+				 (repeat (directory :format "%v")))))
+      this symbol group type)
+  (while all 
+    (setq this (car all)
+	  all (cdr all)
+	  symbol (nth 0 this)
+	  group (nth 1 this)
+	  type (nth 2 this))
+    (if (not (boundp symbol))
+	;; If variables are removed from C code, give an error here!
+	(message "Intrinsic `%S' not bound" symbol)
+      ;; This is called before any user can have changed the value.
+      (put symbol 'factory-value 
+	   (list (custom-start-quote (default-value symbol))))
+      ;; Add it to the right group.
+      (custom-add-to-group group symbol 'custom-variable)
+      ;; Set the type.
+      (put symbol 'custom-type type))))
+
+;;; cus-start.el ends here.