emacs/lisp/cus-start.el

;;; cus-start.el --- define customization properties of builtins.
;;
;; Copyright (C) 1997 Free Software Foundation, Inc.
;;
;; Author: Per Abrahamsen <abraham@dina.kvl.dk>
;; Keywords: internal

;; 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, Inc., 59 Temple Place - Suite 330,
;; Boston, MA 02111-1307, USA.

;;; 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)))

;; Add support for build in variables.
(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))))

;; Add support for build in faces.
(let ((all '((bold "Use bold font.")
	     (bold-italic "Use bold italic font.")
	     (italic "Use italic font.")
	     (underline "Underline text.")
	     (default "Used for text not covered by other faces.")
	     (highlight "Highlight text in some way.")
	     (modeline "Used for displaying the modeline.")
	     (region "Used for displaying the region.")
	     (secondary-selection
	      "Used for displaying the secondary selection.")))
      entry symbol doc)
  (while all
    (setq entry (car all)
	  all (cdr all)
	  symbol (nth 0 entry)
	  doc (nth 1 entry))
    (put symbol 'face-documentation doc)))

;;; cus-start.el ends here.