;;; cus-edit.el --- Tools for customizing Emacs and Lisp packages.
;;
-;; Copyright (C) 1996, 1997, 1999, 2000 Free Software Foundation, Inc.
+;; Copyright (C) 1996, 1997, 1999, 2000, 2001 Free Software Foundation, Inc.
;;
;; Author: Per Abrahamsen <abraham@dina.kvl.dk>
+;; Maintainer: FSF
;; Keywords: help, faces
;; This file is part of GNU Emacs.
;;; Commentary:
;;
;; This file implements the code to create and edit customize buffers.
-;;
+;;
;; See `custom.el'.
;; No commands should have names starting with `custom-' because
(interactive (custom-prompt-variable "Set variable: "
"Set %s to value: "
current-prefix-arg))
-
+
(set var val)
(cond ((string= comment "")
(put var 'variable-comment nil))
current-prefix-arg))
(funcall (or (get var 'custom-set) 'set-default) var value)
(put var 'saved-value (list (custom-quote value)))
+ (custom-push-theme 'theme-value var 'user 'set (list (custom-quote val)))
(cond ((string= comment "")
(put var 'variable-comment nil)
(put var 'saved-variable-comment nil))
(or (< major1 major2)
(and (= major1 major2)
(< minor1 minor2)))))
-
+
;;;###autoload
(defalias 'customize-variable-other-window 'customize-option-other-window)
(widget-insert " ")
(widget-create 'push-button
:tag "Finish"
- :help-echo
- (lambda (&rest ignore)
- (concat (cond
- ((eq custom-buffer-done-function
- 'custom-bury-buffer)
- "Bury")
- ((eq custom-buffer-done-function 'kill-buffer)
- "Kill")
- (t "Finish with"))
- " the buffer."))
+ :help-echo "Bury or kill the buffer."
:action #'Custom-buffer-done)
(widget-insert "\n\n")
(message "Creating customization items...")
;;; The `custom' Widget.
(defface custom-button-face
- '((((type x w32 mac) (class color)) ; Like default modeline
+ '((((type x) (class color)) ; Like default modeline
+ (:box (:line-width 2 :style released-button)
+ :background "lightgrey" :foreground "black"))
+ (((type w32) (class color)) ; Like default modeline
(:box (:line-width 2 :style released-button)
:background "lightgrey" :foreground "black"))
(t
:group 'custom-faces)
(defface custom-button-pressed-face
- '((((type x w32 mac) (class color))
+ '((((type x) (class color))
+ (:box (:line-width 2 :style pressed-button)
+ :background "lightgrey" :foreground "black"))
+ (((type w32) (class color))
(:box (:line-width 2 :style pressed-button)
:background "lightgrey" :foreground "black"))
(t
(defface custom-variable-tag-face
`((((class color)
(background dark))
- (:foreground "light blue" :bold t :height 1.2 :inherit variable-pitch))
+ (:foreground "light blue" :bold t :family "helv"
+ :height ,(let ((height (face-attribute 'default :height)))
+ (if (numberp height)
+ (floor height 0.9)
+ height))))
(((class color)
(background light))
- (:foreground "blue" :bold t :height 1.2 :inherit variable-pitch))
+ (:foreground "blue" :family "helv" :bold t
+ :height ,(let ((height (face-attribute 'default :height)))
+ (if (numberp height)
+ (floor height 0.9)
+ height))))
(t (:bold t)))
"Face used for unpushable variable tags."
:group 'custom-faces)
;; Make the comment invisible by hand if it's empty
(custom-comment-hide comment-widget))
(put symbol 'saved-value (list (widget-value child)))
+ (custom-push-theme 'theme-value symbol 'user
+ 'set (list (widget-value child)))
(funcall set symbol (eval (widget-value child)))
(put symbol 'variable-comment comment)
(put symbol 'saved-variable-comment comment))
(custom-comment-hide comment-widget))
(put symbol 'saved-value
(list (custom-quote (widget-value child))))
+ (custom-push-theme 'theme-value symbol 'user
+ 'set (list (custom-quote (widget-value
+ child))))
(funcall set symbol (widget-value child))
(put symbol 'variable-comment comment)
(put symbol 'saved-variable-comment comment)))
"Restore the saved value for the variable being edited by WIDGET."
(let* ((symbol (widget-value widget))
(set (or (get symbol 'custom-set) 'set-default))
+ (comment-widget (widget-get widget :comment-widget))
(value (get symbol 'saved-value))
(comment (get symbol 'saved-variable-comment)))
(cond ((or value comment)
This operation eliminates any saved setting for the variable,
restoring it to the state of a variable that has never been customized."
(let* ((symbol (widget-value widget))
- (set (or (get symbol 'custom-set) 'set-default)))
+ (set (or (get symbol 'custom-set) 'set-default))
+ (comment-widget (widget-get widget :comment-widget)))
(if (get symbol 'standard-value)
(funcall set symbol (eval (car (get symbol 'standard-value))))
(error "No standard setting known for %S" symbol))
(put symbol 'customized-variable-comment nil)
(when (or (get symbol 'saved-value) (get symbol 'saved-variable-comment))
(put symbol 'saved-value nil)
+ (custom-push-theme 'theme-value symbol 'user 'reset 'standard)
+ ;; As a special optimizations we do not (explictly)
+ ;; save resets to standard when no theme set the value.
+ (if (null (cdr (get symbol 'theme-value)))
+ (put symbol 'theme-value nil))
(put symbol 'saved-variable-comment nil)
(custom-save-all))
(widget-put widget :custom-state 'unknown)
;;; The `custom-face' Widget.
(defface custom-face-tag-face
- `((t (:bold t :height 1.2 :inherit variable-pitch)))
+ `((t (:bold t :family "helv"
+ :height ,(let ((height (face-attribute 'default :height)))
+ (if (numberp height)
+ (floor height 0.9)
+ height)))))
"Face used for face tags."
:group 'custom-faces)
(if (eq custom-buffer-style 'face)
(insert " ")
(widget-specify-sample widget begin (point))
- (if (string-match "face\\'" tag)
- (insert ":")
- (insert " face: ")))
+ (insert ": "))
;; Sample.
(push (widget-create-child-and-convert widget 'item
:format "(%{%t%})"
(custom-comment-hide comment-widget))
(face-spec-set symbol value)
(put symbol 'saved-face value)
+ (custom-push-theme 'theme-face symbol 'user 'set value)
(put symbol 'customized-face nil)
(put symbol 'face-comment comment)
(put symbol 'customized-face-comment nil)
(put symbol 'customized-face-comment nil)
(when (or (get symbol 'saved-face) (get symbol 'saved-face-comment))
(put symbol 'saved-face nil)
+ (custom-push-theme 'theme-face symbol 'user 'reset 'standard)
+ ;; Do not explictly save resets to standards without themes.
+ (if (null (cdr (get symbol 'theme-face)))
+ (put symbol 'theme-face nil))
(put symbol 'saved-face-comment nil)
(custom-save-all))
(face-spec-set symbol value)
(defface custom-group-tag-face-1
`((((class color)
(background dark))
- (:foreground "pink" :bold t :height 1.2 :inherit variable-pitch))
+ (:foreground "pink" :family "helv"
+ :height ,(let ((height (face-attribute 'default :height)))
+ (if (numberp height)
+ (floor height 0.9)
+ height))
+ :bold t))
(((class color)
(background light))
- (:foreground "red" :bold t :height 1.2 :inherit variable-pitch))
+ (:foreground "red" :bold t
+ :height ,(let ((height (face-attribute 'default :height)))
+ (if (numberp height)
+ (floor height 0.9)
+ height))))
(t (:bold t)))
"Face used for group tags."
:group 'custom-faces)
(defface custom-group-tag-face
`((((class color)
(background dark))
- (:foreground "light blue" :bold t :height 1.2))
+ (:foreground "light blue" :bold t
+ :height ,(let ((height (face-attribute 'default :height)))
+ (if (numberp height)
+ (floor height 0.9)
+ height))))
(((class color)
(background light))
- (:foreground "blue" :bold t :height 1.2))
+ (:foreground "blue" :bold t
+ :height ,(let ((height (face-attribute 'default :height)))
+ (if (numberp height)
+ (floor height 0.9)
+ height))))
(t (:bold t)))
"Face used for low level group tags."
:group 'custom-faces)
(defun custom-save-variables ()
"Save all customized variables in `custom-file'."
(save-excursion
+ (custom-save-delete 'custom-load-themes)
+ (custom-save-delete 'custom-reset-variables)
(custom-save-delete 'custom-set-variables)
+ (custom-save-loaded-themes)
+ (custom-save-resets 'theme-value 'custom-reset-variables nil)
(let ((standard-output (current-buffer))
(saved-list (make-list 1 0))
sort-fold-case)
;; Your init file must only contain one such instance.\n")
(mapcar
(lambda (symbol)
- (let ((value (get symbol 'saved-value))
+ (let ((spec (car-safe (get symbol 'theme-value)))
+ (value (get symbol 'saved-value))
(requests (get symbol 'custom-requests))
(now (not (or (get symbol 'standard-value)
(and (not (boundp symbol))
- (not (get symbol 'force-value))))))
+ (not (eq (get symbol 'force-value)
+ 'rogue))))))
(comment (get symbol 'saved-variable-comment))
sep)
- (when (or value comment)
+ (when (or (and spec
+ (eq (nth 0 spec) 'user)
+ (eq (nth 1 spec) 'set))
+ comment)
(unless (bolp)
(princ "\n"))
(princ " '(")
(defun custom-save-faces ()
"Save all customized faces in `custom-file'."
(save-excursion
+ (custom-save-delete 'custom-reset-faces)
(custom-save-delete 'custom-set-faces)
+ (custom-save-resets 'theme-face 'custom-reset-faces '(default))
(let ((standard-output (current-buffer))
(saved-list (make-list 1 0))
sort-fold-case)
;; Your init file must only contain one such instance.\n")
(mapcar
(lambda (symbol)
- (let ((value (get symbol 'saved-face))
- (now (not (or (get 'default 'face-defface-spec)
- (and (not (custom-facep 'default))
- (not (get 'default 'force-face))))))
- (comment (get 'default 'saved-face-comment)))
- (unless (eq symbol 'default))
- ;; Don't print default face here.
- (unless (bolp)
- (princ "\n"))
- (princ " '(")
- (prin1 symbol)
- (princ " ")
- (prin1 value)
- (cond ((or now comment)
- (princ " ")
- (if now
- (princ "t")
- (princ "nil"))
- (cond (comment
- (princ " ")
- (prin1 comment)
- (princ ")"))
- (t
- (princ ")"))))
- (t
- (princ ")")))))
+ (let ((theme-spec (car-safe (get symbol 'theme-face)))
+ (value (get symbol 'saved-face))
+ (now (not (or (get symbol 'face-defface-spec)
+ (and (not (custom-facep symbol))
+ (not (eq (get symbol 'force-face) 'rogue))))))
+ (comment (get symbol 'saved-face-comment)))
+ (when (or (and theme-spec
+ (eq (nth 0 theme-spec) 'user)
+ (eq (nth 1 theme-spec) 'set))
+ comment)
+ (unless (bolp)
+ (princ "\n"))
+ (princ " '(")
+ (prin1 symbol)
+ (princ " ")
+ (prin1 value)
+ (cond ((or now comment)
+ (princ " ")
+ (if now
+ (princ "t")
+ (princ "nil"))
+ (cond (comment
+ (princ " ")
+ (prin1 comment)
+ (princ ")"))
+ (t
+ (princ ")"))))
+ (t
+ (princ ")"))))))
saved-list)
(if (bolp)
(princ " "))
(unless (looking-at "\n")
(princ "\n")))))
+(defun custom-save-resets (property setter special)
+ (let (started-writing ignored-special)
+ ;; (custom-save-delete setter) Done by caller
+ (let ((standard-output (current-buffer))
+ (mapper `(lambda (object)
+ (let ((spec (car-safe (get object (quote ,property)))))
+ (when (and (not (memq object ignored-special))
+ (eq (nth 0 spec) 'user)
+ (eq (nth 1 spec) 'reset))
+ ;; Do not write reset statements unless necessary.
+ (unless started-writing
+ (setq started-writing t)
+ (unless (bolp)
+ (princ "\n"))
+ (princ "(")
+ (princ (quote ,setter))
+ (princ "\n '(")
+ (prin1 object)
+ (princ " ")
+ (prin1 (nth 3 spec))
+ (princ ")")))))))
+ (mapc mapper special)
+ (setq ignored-special special)
+ (mapatoms mapper)
+ (when started-writing
+ (princ ")\n")))))
+
+(defun custom-save-loaded-themes ()
+ (let ((themes (reverse (get 'user 'theme-loads-themes)))
+ (standard-output (current-buffer)))
+ (when themes
+ (unless (bolp) (princ "\n"))
+ (princ "(custom-load-themes")
+ (mapc (lambda (theme)
+ (princ "\n '")
+ (prin1 theme)) themes)
+ (princ " )\n"))))
+
;;;###autoload
(defun customize-save-customized ()
"Save all user options which have been set in this session."
(get symbol 'customized-variable-comment)))
(when face
(put symbol 'saved-face face)
+ (custom-push-theme 'theme-face symbol 'user 'set value)
(put symbol 'customized-face nil))
(when value
(put symbol 'saved-value value)
+ (custom-push-theme 'theme-value symbol 'user 'set value)
(put symbol 'customized-value nil))
(when variable-comment
(put symbol 'saved-variable-comment variable-comment)
':style 'toggle
':selected symbol)))
-(defun custom-group-menu-create (widget symbol)
- "Ignoring WIDGET, create a menu entry for customization group SYMBOL."
- `( ,(custom-unlispify-menu-entry symbol t)
- :filter (lambda (&rest junk)
- (cdr (custom-menu-create ',symbol)))))
+;; Fixme: sort out use of :filter in Emacs 21.
+(if nil ; (string-match "XEmacs" emacs-version)
+ ;; XEmacs can create menus dynamically.
+ (defun custom-group-menu-create (widget symbol)
+ "Ignoring WIDGET, create a menu entry for customization group SYMBOL."
+ `( ,(custom-unlispify-menu-entry symbol t)
+ :filter (lambda (&rest junk)
+ (cdr (custom-menu-create ',symbol)))))
+ ;; But emacs can't.
+ (defun custom-group-menu-create (widget symbol)
+ "Ignoring WIDGET, create a menu entry for customization group SYMBOL."
+ ;; Limit the nesting.
+ (let ((custom-menu-nesting (1- custom-menu-nesting)))
+ (custom-menu-create symbol))))
;;;###autoload
(defun custom-menu-create (symbol)
The format is suitable for use with `easy-menu-define'."
(unless name
(setq name "Customize"))
- `(,name
- :filter (lambda (&rest junk)
- (cdr (custom-menu-create ',symbol)))))
+ ;; Fixme: sort out use of :filter in Emacs 21.
+ (if nil ;(string-match "XEmacs" emacs-version)
+ ;; We can delay it under XEmacs.
+ `(,name
+ :filter (lambda (&rest junk)
+ (cdr (custom-menu-create ',symbol))))
+ ;; But we must create it now under Emacs.
+ (cons name (cdr (custom-menu-create symbol)))))
;;; The Custom Mode.
"Keymap for `custom-mode'.")
(unless custom-mode-map
- ;; This keymap should be dense, but a dense keymap would prevent inheriting
- ;; "\r" bindings from the parent map.
(setq custom-mode-map (make-sparse-keymap))
(set-keymap-parent custom-mode-map widget-keymap)
(suppress-keymap custom-mode-map)
(set (make-local-variable 'widget-push-button-suffix) "")
(set (make-local-variable 'widget-link-prefix) "")
(set (make-local-variable 'widget-link-suffix) ""))
+ (make-local-hook 'widget-edit-functions)
(add-hook 'widget-edit-functions 'custom-state-buffer-message nil t)
(run-hooks 'custom-mode-hook))
-(put 'custom-mode 'mode-class 'special)
-
(add-to-list
'debug-ignored-errors
"^No user options have changed defaults in recent Emacs versions$")
;;; cus-face.el -- customization support for faces.
;;
-;; Copyright (C) 1996, 1997, 1999 Free Software Foundation, Inc.
+;; Copyright (C) 1996, 1997, 1999, 2001 Free Software Foundation, Inc.
;;
;; Author: Per Abrahamsen <abraham@dina.kvl.dk>
+;; Maintainer: FSF
;; Keywords: help, faces
-;; Version: Emacs
;; This file is part of GNU Emacs.
(choice :tag "Height"
:help-echo "Face's font height."
(const :tag "*" nil)
- (integer :tag "Height in 1/10 pt")
- (number :tag "Scale" 1.0))
+ (integer :tag "Height in 1/10 pt"))
(lambda (face value &optional frame)
(set-face-attribute face frame :height (or value 'unspecified)))
(lambda (face &optional frame)
(let ((height (face-attribute face :height frame)))
(if (eq height 'unspecified) nil height))))
-
+
(:weight
(choice :tag "Weight"
:help-echo "Font weight."
(set-face-attribute face frame :stipple (or value 'unspecified)))
(lambda (face &optional frame)
(let ((value (face-attribute face :stipple frame)))
- (if (eq value 'unspecified) nil value))))
-
- (:inherit
- (repeat :tag "Inherit"
- :help-echo "List of faces to inherit attributes from."
- (face :Tag "Face" default))
- (lambda (face value &optional frame)
- (message "Setting to: <%s>" value)
- (set-face-attribute face frame :inherit
- (if (and (consp value) (null (cdr value)))
- (car value)
- value)))
- (lambda (face &optional frame)
- (let ((value (face-attribute face :inherit frame)))
- (cond ((or (null value) (eq value 'unspecified))
- nil)
- ((symbolp value)
- (list value))
- (t
- value))))))
+ (if (eq value 'unspecified) nil value)))))
"Alist of face attributes.
The elements are of the form (KEY TYPE SET GET), where KEY is the name
of the attribute, TYPE is a widget type for editing the attibute, SET
is a function for setting the attribute value, and GET is a function
-for getiing the attribute value.
+for getting the attribute value.
The SET function should take three arguments, the face to modify, the
value of the attribute, and optionally the frame where the face should
The GET function should take two arguments, the face to examine, and
optionally the frame where the face should be examined.")
-
(defun custom-face-attributes-get (face frame)
"For FACE on FRAME, return an alternating list describing its attributes.
The list has the form (KEYWORD VALUE KEYWORD VALUE...).
(let* ((attribute (car (car attrs)))
(value (face-attribute face attribute frame)))
(setq attrs (cdr attrs))
- (unless (or (eq value 'unspecified)
- (and (null value) (memq attribute '(:inherit))))
+ (unless (eq value 'unspecified)
(setq plist (cons attribute (cons value plist))))))
plist))
;;;###autoload
(defun custom-set-faces (&rest args)
"Initialize faces according to user preferences.
+This asociates the setting with the USER theme.
The arguments should be a list where each entry has the form:
(FACE SPEC [NOW [COMMENT]])
-SPEC is stored as the saved value for FACE.
+SPEC is stored as the saved value for FACE, as well as the value for the
+user theme. The user theme is one of the default themes known to Emacs.
+See `custom-known-themes' for more information on the known themes.
+See `custom-theme-set-faces' for more information on the interplay
+between themes and faces.
+See `defface' for the format of SPEC.
+
+If NOW is present and non-nil, FACE is created now, according to SPEC.
+COMMENT is a string comment about FACE."
+ (apply 'custom-theme-set-faces 'user args))
+
+(defun custom-theme-set-faces (theme &rest args)
+ "Initialize faces for theme THEME.
+The arguments should be a list where each entry has the form:
+
+ (FACE SPEC [NOW [COMMENT]])
+
+SPEC is stored as the saved value for FACE, as well as the value for the
+user theme. The user theme is one of the default themes known to Emacs.
+See `custom-known-themes' for more information on the known themes.
+See `custom-theme-set-faces' for more information on the interplay
+between themes and faces.
+See `defface' for the format of SPEC.
+
If NOW is present and non-nil, FACE is created now, according to SPEC.
COMMENT is a string comment about FACE.
-See `defface' for the format of SPEC."
- (while args
- (let ((entry (car args)))
- (if (listp entry)
- (let ((face (nth 0 entry))
- (spec (nth 1 entry))
- (now (nth 2 entry))
- (comment (nth 3 entry)))
- (put face 'saved-face spec)
- (put face 'saved-face-comment comment)
- (when now
- (put face 'force-face t))
- (when (or now (facep face))
- (put face 'face-comment comment)
- (make-empty-face face)
- (face-spec-set face spec))
+Several properties of THEME and FACE are used in the process:
+
+If THEME property `theme-immediate' is non-nil, this is equivalent of
+providing the NOW argument to all faces in the argument list: FACE is
+created now. The only difference is FACE property `force-face': if NOW
+is non-nil, FACE property force-face is set to the symbol `rogue', else
+if THEME property theme-immediate is non-nil, FACE property force-face
+is set to the symbol `immediate'.
+
+SPEC itself is saved in FACE property `saved-face' and it is stored in
+FACE's list property `theme-face' \(using `custom-push-theme')."
+ (custom-check-theme theme)
+ (let ((immediate (get theme 'theme-immediate)))
+ (while args
+ (let ((entry (car args)))
+ (if (listp entry)
+ (let ((face (nth 0 entry))
+ (spec (nth 1 entry))
+ (now (nth 2 entry))
+ (comment (nth 3 entry)))
+ (put face 'saved-face spec)
+ (put face 'saved-face-comment comment)
+ (custom-push-theme 'theme-face face theme 'set spec)
+ (when (or now immediate)
+ (put face 'force-face (if now 'rogue 'immediate)))
+ (when (or now immediate (facep face))
+ (unless (facep face)
+ (make-empty-face face))
+ (put face 'face-comment comment)
+ (face-spec-set face spec))
(setq args (cdr args)))
;; Old format, a plist of FACE SPEC pairs.
(let ((face (nth 0 args))
(spec (nth 1 args)))
- (put face 'saved-face spec))
- (setq args (cdr (cdr args)))))))
+ (put face 'saved-face spec)
+ (custom-push-theme 'theme-face face theme 'set spec))
+ (setq args (cdr (cdr args))))))))
+
+;;;###autoload
+(defun custom-theme-face-value (face theme)
+ "Return spec of FACE in THEME if THEME modifies FACE.
+Nil otherwise. The associations between theme and spec for FACE
+is stored in FACE's property `theme-face'. The appropriate face
+is retrieved using `custom-theme-value'."
+ ;; Returns car because the value is stored inside a one element list
+ (car-safe (custom-theme-value theme (get face 'theme-face))))
+
+(defun custom-theme-reset-internal-face (face to-theme)
+ "Reset FACE to the value defined by TO-THEME.
+If FACE is not defined in TO-THEME, reset FACE to the standard
+value. See `custom-theme-face-value'. The standard value is
+stored in SYMBOL's property `face-defface-spec' by `defface'."
+ (let ((spec (custom-theme-face-value face to-theme))
+ was-in-theme)
+ (setq was-in-theme spec)
+ (setq spec (or spec (get face 'face-defface-spec)))
+ (when spec
+ (put face 'save-face was-in-theme)
+ (when (or (get face 'force-face) (facep face))
+ (unless (facep face)
+ (make-empty-face face))
+ (face-spec-set face spec)))
+ spec))
+
+;;;###autoload
+(defun custom-theme-reset-faces (theme &rest args)
+ "Reset the value of the face to values previously defined.
+Associate this setting with THEME.
+
+ARGS is a list of lists of the form
+
+ (FACE TO-THEME)
+
+This means reset FACE to its value in TO-THEME."
+ (custom-check-theme theme)
+ (mapcar '(lambda (arg)
+ (apply 'custom-theme-reset-internal-face arg)
+ (custom-push-theme 'theme-face (car arg) theme 'reset (cadr arg)))
+ args))
+
+;;;###autoload
+(defun custom-reset-faces (&rest args)
+ "Reset the value of the face to values previously saved.
+This is the setting assosiated the `user' theme.
+
+ARGS is defined as for `custom-theme-reset-faces'"
+ (apply 'custom-theme-reset-faces 'user args))
;;; The End.
--- /dev/null
+;;; custom.el -- Tools for declaring and initializing options.
+;;
+;; Copyright (C) 1996, 1997, 1999, 2001 Free Software Foundation, Inc.
+;;
+;; Author: Per Abrahamsen <abraham@dina.kvl.dk>
+;; Maintainer: FSF
+;; Keywords: help, faces
+
+;; 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:
+;;
+;; This file only contain the code needed to declare and initialize
+;; user options. The code to customize options is autoloaded from
+;; `cus-edit.el' and is documented in the Emacs Lisp Reference manual.
+
+;; The code implementing face declarations is in `cus-face.el'
+
+;;; Code:
+
+(require 'widget)
+
+(defvar custom-define-hook nil
+ ;; Customize information for this option is in `cus-edit.el'.
+ "Hook called after defining each customize option.")
+
+;;; The `defcustom' Macro.
+
+(defun custom-initialize-default (symbol value)
+ "Initialize SYMBOL with VALUE.
+This will do nothing if symbol already has a default binding.
+Otherwise, if symbol has a `saved-value' property, it will evaluate
+the car of that and used as the default binding for symbol.
+Otherwise, VALUE will be evaluated and used as the default binding for
+symbol."
+ (unless (default-boundp symbol)
+ ;; Use the saved value if it exists, otherwise the standard setting.
+ (set-default symbol (if (get symbol 'saved-value)
+ (eval (car (get symbol 'saved-value)))
+ (eval value)))))
+
+(defun custom-initialize-set (symbol value)
+ "Initialize SYMBOL based on VALUE.
+If the symbol doesn't have a default binding already,
+then set it using its `:set' function (or `set-default' if it has none).
+The value is either the value in the symbol's `saved-value' property,
+if any, or VALUE."
+ (unless (default-boundp symbol)
+ (funcall (or (get symbol 'custom-set) 'set-default)
+ symbol
+ (if (get symbol 'saved-value)
+ (eval (car (get symbol 'saved-value)))
+ (eval value)))))
+
+(defun custom-initialize-reset (symbol value)
+ "Initialize SYMBOL based on VALUE.
+Set the symbol, using its `:set' function (or `set-default' if it has none).
+The value is either the symbol's current value
+ \(as obtained using the `:get' function), if any,
+or the value in the symbol's `saved-value' property if any,
+or (last of all) VALUE."
+ (funcall (or (get symbol 'custom-set) 'set-default)
+ symbol
+ (cond ((default-boundp symbol)
+ (funcall (or (get symbol 'custom-get) 'default-value)
+ symbol))
+ ((get symbol 'saved-value)
+ (eval (car (get symbol 'saved-value))))
+ (t
+ (eval value)))))
+
+(defun custom-initialize-changed (symbol value)
+ "Initialize SYMBOL with VALUE.
+Like `custom-initialize-reset', but only use the `:set' function if changing
+the standard setting.
+For the standard setting, use the `set-default'."
+ (cond ((default-boundp symbol)
+ (funcall (or (get symbol 'custom-set) 'set-default)
+ symbol
+ (funcall (or (get symbol 'custom-get) 'default-value)
+ symbol)))
+ ((get symbol 'saved-value)
+ (funcall (or (get symbol 'custom-set) 'set-default)
+ symbol
+ (eval (car (get symbol 'saved-value)))))
+ (t
+ (set-default symbol (eval value)))))
+
+(defun custom-declare-variable (symbol default doc &rest args)
+ "Like `defcustom', but SYMBOL and DEFAULT are evaluated as normal arguments.
+DEFAULT should be an expression to evaluate to compute the default value,
+not the default value itself.
+
+DEFAULT is stored as SYMBOL's value in the standard theme. See
+`custom-known-themes' for a list of known themes. For backwards
+compatibility, DEFAULT is also stored in SYMBOL's property
+`standard-value'. At the same time, SYMBOL's property `force-value' is
+set to nil, as the value is no longer rogue."
+ ;; Remember the standard setting. The value should be in the standard
+ ;; theme, not in this property. However, his would require changeing
+ ;; the C source of defvar and others as well...
+ (put symbol 'standard-value (list default))
+ ;; Maybe this option was rogue in an earlier version. It no longer is.
+ (when (get symbol 'force-value)
+ (put symbol 'force-value nil))
+ (when doc
+ (put symbol 'variable-documentation doc))
+ (let ((initialize 'custom-initialize-reset)
+ (requests nil))
+ (while args
+ (let ((arg (car args)))
+ (setq args (cdr args))
+ (unless (symbolp arg)
+ (error "Junk in args %S" args))
+ (let ((keyword arg)
+ (value (car args)))
+ (unless args
+ (error "Keyword %s is missing an argument" keyword))
+ (setq args (cdr args))
+ (cond ((eq keyword :initialize)
+ (setq initialize value))
+ ((eq keyword :set)
+ (put symbol 'custom-set value))
+ ((eq keyword :get)
+ (put symbol 'custom-get value))
+ ((eq keyword :require)
+ (setq requests (cons value requests)))
+ ((eq keyword :type)
+ (put symbol 'custom-type (purecopy value)))
+ ((eq keyword :options)
+ (if (get symbol 'custom-options)
+ ;; Slow safe code to avoid duplicates.
+ (mapcar (lambda (option)
+ (custom-add-option symbol option))
+ value)
+ ;; Fast code for the common case.
+ (put symbol 'custom-options (copy-sequence value))))
+ (t
+ (custom-handle-keyword symbol keyword value
+ 'custom-variable))))))
+ (put symbol 'custom-requests requests)
+ ;; Do the actual initialization.
+ (funcall initialize symbol default))
+ (setq current-load-list (cons symbol current-load-list))
+ (run-hooks 'custom-define-hook)
+ symbol)
+
+(defmacro defcustom (symbol value doc &rest args)
+ "Declare SYMBOL as a customizable variable that defaults to VALUE.
+DOC is the variable documentation.
+
+Neither SYMBOL nor VALUE needs to be quoted.
+If SYMBOL is not already bound, initialize it to VALUE.
+The remaining arguments should have the form
+
+ [KEYWORD VALUE]...
+
+The following keywords are meaningful:
+
+:type VALUE should be a widget type for editing the symbols value.
+ The default is `sexp'.
+:options VALUE should be a list of valid members of the widget type.
+:group VALUE should be a customization group.
+ Add SYMBOL to that group.
+:initialize
+ VALUE should be a function used to initialize the
+ variable. It takes two arguments, the symbol and value
+ given in the `defcustom' call. The default is
+ `custom-initialize-default'
+:set VALUE should be a function to set the value of the symbol.
+ It takes two arguments, the symbol to set and the value to
+ give it. The default choice of function is `custom-set-default'.
+:get VALUE should be a function to extract the value of symbol.
+ The function takes one argument, a symbol, and should return
+ the current value for that symbol. The default choice of function
+ is `custom-default-value'.
+:require
+ VALUE should be a feature symbol. If you save a value
+ for this option, then when your `.emacs' file loads the value,
+ it does (require VALUE) first.
+:version
+ VALUE should be a string specifying that the variable was
+ first introduced, or its default value was changed, in Emacs
+ version VERSION.
+
+The actual work is done in function `custom-declare-variable'.
+
+Read the section about customization in the Emacs Lisp manual for more
+information."
+ ;; It is better not to use backquote in this file,
+ ;; because that makes a bootstrapping problem
+ ;; if you need to recompile all the Lisp files using interpreted code.
+ (nconc (list 'custom-declare-variable
+ (list 'quote symbol)
+ (list 'quote value)
+ doc)
+ args))
+
+;;; The `defface' Macro.
+
+(defmacro defface (face spec doc &rest args)
+ "Declare FACE as a customizable face that defaults to SPEC.
+FACE does not need to be quoted.
+
+Third argument DOC is the face documentation.
+
+If FACE has been set with `custom-set-face', set the face attributes
+as specified by that function, otherwise set the face attributes
+according to SPEC.
+
+The remaining arguments should have the form
+
+ [KEYWORD VALUE]...
+
+The following KEYWORDs are defined:
+
+:group VALUE should be a customization group.
+ Add FACE to that group.
+
+SPEC should be an alist of the form ((DISPLAY ATTS)...).
+
+The first element of SPEC where the DISPLAY matches the frame
+is the one that takes effect in that frame. The ATTRs in this
+element take effect; the other elements are ignored, on that frame.
+
+ATTS is a list of face attributes followed by their values:
+ (ATTR VALUE ATTR VALUE...)
+
+The possible attributes are `:family', `:width', `:height', `:weight',
+`:slant', `:underline', `:overline', `:strike-through', `:box',
+`:foreground', `:background', `:stipple', and `:inverse-video'.
+
+DISPLAY can either be the symbol t, which will match all frames, or an
+alist of the form \((REQ ITEM...)...). For the DISPLAY to match a
+FRAME, the REQ property of the frame must match one of the ITEM. The
+following REQ are defined:
+
+`type' (the value of `window-system')
+ Under X, in addition to the values `window-system' can take,
+ `motif', `lucid' and `x-toolkit' are allowed, and match when
+ the Motif toolkit, Lucid toolkit, or any X toolkit is in use.
+
+`class' (the frame's color support)
+ Should be one of `color', `grayscale', or `mono'.
+
+`background' (what color is used for the background text)
+ Should be one of `light' or `dark'.
+
+Read the section about customization in the Emacs Lisp manual for more
+information."
+ ;; It is better not to use backquote in this file,
+ ;; because that makes a bootstrapping problem
+ ;; if you need to recompile all the Lisp files using interpreted code.
+ (nconc (list 'custom-declare-face (list 'quote face) spec doc) args))
+
+;;; The `defgroup' Macro.
+
+(defun custom-declare-group (symbol members doc &rest args)
+ "Like `defgroup', but SYMBOL is evaluated as a normal argument."
+ (while members
+ (apply 'custom-add-to-group symbol (car members))
+ (setq members (cdr members)))
+ (put symbol 'custom-group (nconc members (get symbol 'custom-group)))
+ (when doc
+ ;; This text doesn't get into DOC.
+ (put symbol 'group-documentation (purecopy doc)))
+ (while args
+ (let ((arg (car args)))
+ (setq args (cdr args))
+ (unless (symbolp arg)
+ (error "Junk in args %S" args))
+ (let ((keyword arg)
+ (value (car args)))
+ (unless args
+ (error "Keyword %s is missing an argument" keyword))
+ (setq args (cdr args))
+ (cond ((eq keyword :prefix)
+ (put symbol 'custom-prefix value))
+ (t
+ (custom-handle-keyword symbol keyword value
+ 'custom-group))))))
+ (run-hooks 'custom-define-hook)
+ symbol)
+
+(defmacro defgroup (symbol members doc &rest args)
+ "Declare SYMBOL as a customization group containing MEMBERS.
+SYMBOL does not need to be quoted.
+
+Third arg DOC is the group documentation.
+
+MEMBERS should be an alist of the form ((NAME WIDGET)...) where
+NAME is a symbol and WIDGET is a widget for editing that symbol.
+Useful widgets are `custom-variable' for editing variables,
+`custom-face' for edit faces, and `custom-group' for editing groups.
+
+The remaining arguments should have the form
+
+ [KEYWORD VALUE]...
+
+The following KEYWORDs are defined:
+
+:group VALUE should be a customization group.
+ Add SYMBOL to that group.
+
+:version VALUE should be a string specifying that the group was introduced
+ in Emacs version VERSION.
+
+Read the section about customization in the Emacs Lisp manual for more
+information."
+ ;; It is better not to use backquote in this file,
+ ;; because that makes a bootstrapping problem
+ ;; if you need to recompile all the Lisp files using interpreted code.
+ (nconc (list 'custom-declare-group (list 'quote symbol) members doc) args))
+
+(defun custom-add-to-group (group option widget)
+ "To existing GROUP add a new OPTION of type WIDGET.
+If there already is an entry for that option, overwrite it."
+ (let* ((members (get group 'custom-group))
+ (old (assq option members)))
+ (if old
+ (setcar (cdr old) widget)
+ (put group 'custom-group (nconc members (list (list option widget)))))))
+
+;;; Properties.
+
+(defun custom-handle-all-keywords (symbol args type)
+ "For customization option SYMBOL, handle keyword arguments ARGS.
+Third argument TYPE is the custom option type."
+ (while args
+ (let ((arg (car args)))
+ (setq args (cdr args))
+ (unless (symbolp arg)
+ (error "Junk in args %S" args))
+ (let ((keyword arg)
+ (value (car args)))
+ (unless args
+ (error "Keyword %s is missing an argument" keyword))
+ (setq args (cdr args))
+ (custom-handle-keyword symbol keyword value type)))))
+
+(defun custom-handle-keyword (symbol keyword value type)
+ "For customization option SYMBOL, handle KEYWORD with VALUE.
+Fourth argument TYPE is the custom option type."
+ (if purify-flag
+ (setq value (purecopy value)))
+ (cond ((eq keyword :group)
+ (custom-add-to-group value symbol type))
+ ((eq keyword :version)
+ (custom-add-version symbol value))
+ ((eq keyword :link)
+ (custom-add-link symbol value))
+ ((eq keyword :load)
+ (custom-add-load symbol value))
+ ((eq keyword :tag)
+ (put symbol 'custom-tag value))
+ ((eq keyword :set-after)
+ (custom-add-dependencies symbol value))
+ (t
+ (error "Unknown keyword %s" keyword))))
+
+(defun custom-add-dependencies (symbol value)
+ "To the custom option SYMBOL, add dependencies specified by VALUE.
+VALUE should be a list of symbols. For each symbol in that list,
+this specifies that SYMBOL should be set after the specified symbol, if
+both appear in constructs like `custom-set-variables'."
+ (unless (listp value)
+ (error "Invalid custom dependency `%s'" value))
+ (let* ((deps (get symbol 'custom-dependencies))
+ (new-deps deps))
+ (while value
+ (let ((dep (car value)))
+ (unless (symbolp dep)
+ (error "Invalid custom dependency `%s'" dep))
+ (unless (memq dep new-deps)
+ (setq new-deps (cons dep new-deps)))
+ (setq value (cdr value))))
+ (unless (eq deps new-deps)
+ (put symbol 'custom-dependencies new-deps))))
+
+(defun custom-add-option (symbol option)
+ "To the variable SYMBOL add OPTION.
+
+If SYMBOL is a hook variable, OPTION should be a hook member.
+For other types variables, the effect is undefined."
+ (let ((options (get symbol 'custom-options)))
+ (unless (member option options)
+ (put symbol 'custom-options (cons option options)))))
+
+(defun custom-add-link (symbol widget)
+ "To the custom option SYMBOL add the link WIDGET."
+ (let ((links (get symbol 'custom-links)))
+ (unless (member widget links)
+ (put symbol 'custom-links (cons (purecopy widget) links)))))
+
+(defun custom-add-version (symbol version)
+ "To the custom option SYMBOL add the version VERSION."
+ (put symbol 'custom-version (purecopy version)))
+
+(defun custom-add-load (symbol load)
+ "To the custom option SYMBOL add the dependency LOAD.
+LOAD should be either a library file name, or a feature name."
+ (let ((loads (get symbol 'custom-loads)))
+ (unless (member load loads)
+ (put symbol 'custom-loads (cons (purecopy load) loads)))))
+
+;;; The `deftheme' macro
+
+(defvar custom-known-themes '(user standard)
+ "Themes that have been defthemed.
+The default value is the list (user standard). The standard theme
+contains the Emacs standard settings from the original elisp files. The
+user theme contains all the the settings the user customized and saved.
+Additional themes declared with the `deftheme' macro will be added to
+the front of this list.")
+
+(defun custom-declare-theme (theme feature &optional doc &rest args)
+ "Like `deftheme', but THEME is evaluated as a normal argument.
+FEATURE is the feature this theme provides. This symbol is created
+from THEME by `custom-make-theme-feature'."
+ (add-to-list 'custom-known-themes theme)
+ (put theme 'theme-feature feature)
+ (when doc
+ (put theme 'theme-documentation doc))
+ (while args
+ (let ((arg (car args)))
+ (setq args (cdr args))
+ (unless (symbolp arg)
+ (error "Junk in args %S" args))
+ (let ((keyword arg)
+ (value (car args)))
+ (unless args
+ (error "Keyword %s is missing an argument" keyword))
+ (setq args (cdr args))
+ (cond ((eq keyword :short-description)
+ (put theme 'theme-short-description short-description))
+ ((eq keyword :immediate)
+ (put theme 'theme-immediate immediate))
+ ((eq keyword :variable-set-string)
+ (put theme 'theme-variable-set-string variable-set-string))
+ ((eq keyword :variable-reset-string)
+ (put theme 'theme-variable-reset-string variable-reset-string))
+ ((eq keyword :face-set-string)
+ (put theme 'theme-face-set-string face-set-string))
+ ((eq keyword :face-reset-string)
+ (put theme 'theme-face-reset-string face-reset-string)))))))
+
+(defmacro deftheme (theme &optional doc &rest args)
+ "Declare THEME.
+
+The optional argument DOC is a doc string describing the the theme.
+
+The remaining arguments should have the form
+
+ [KEYWORD VALUE]...
+
+The following KEYWORD's are defined:
+
+:short-description
+ VALUE is a short (one line) description of the theme. If not
+ given DOC is used.
+:immediate
+ If VALUE is non-nil, variables set in this theme are bound
+ immediately when loading the theme.
+:variable-set-string
+ VALUE is a string used to indicate that a variable takes its
+ setting from this theme. It is passed to FORMAT with the name
+ of the theme as an additional argument. If not given, a
+ generic description is used.
+:variable-reset-string
+ VALUE is a string used in the case a variable has been forced
+ to its value in this theme. It is passed to FORMAT with the
+ name of the theme as an additional argument. If not given, a
+ generic description is used.
+:face-set-string
+ VALUE is a string used to indicate that a face takes its
+ setting from this theme. It is passed to FORMAT with the name
+ of the theme as an additional argument. If not given, a
+ generic description is used.
+:face-reset-string
+ VALUE is a string used in the case a face has been forced to
+ its value in this theme. It is passed to FORMAT with the name
+ of the theme as an additional argument. If not given, a
+ generic description is used.
+
+Any theme foo should be defined in a file called foo-theme.el or
+foo-theme.elc; see `custom-make-theme-feature' for more information."
+ (let ((feature (custom-make-theme-feature theme)))
+ ;; It is better not to use backquote in this file,
+ ;; because that makes a bootstrapping problem
+ ;; if you need to recompile all the Lisp files using interpreted code.
+ (nconc (list 'custom-declare-theme
+ (list 'quote theme)
+ (list 'quote feature)
+ doc) args)))
+
+(defun custom-make-theme-feature (theme)
+ "Given a symbol THEME, create a new symbol by appending \"-theme\"
+to the name of symbol THEME. This new symbol will be stored in the
+theme-feature property of THEME. This is the symbol a theme will
+provide once it is defined using `provide-theme', and it is the symbol
+other themes can require using `require-theme' when they are being
+installed.
+
+This allows for a file-name convention: Every theme X has a property
+provide-theme which contains the value \"X-theme\". Calling
+\(require-theme X) will attempt to load files \"X-theme.el\" or
+\"X-theme.elc\"."
+ (intern (concat (symbol-name theme) "-theme")))
+
+(defsubst custom-theme-p (theme)
+ "Non-nil when THEME has been defined."
+ (memq theme custom-known-themes))
+
+(defsubst custom-check-theme (theme)
+ "Check whether THEME is valid and signal an error if it is not."
+ (unless (custom-theme-p theme)
+ (error "Unknown theme `%s'" theme)))
+
+;;; Initializing.
+
+(defun custom-push-theme (prop symbol theme mode value)
+ "Add (THEME MODE VALUE) to the list property PROP of SYMBOL.
+
+MODE can be either the symbol `set' or the symbol `reset'. If it is the
+symbol `set', then VALUE is the value to use. If it is the symbol
+`reset', then VALUE is the mode to query instead.
+
+In the following example for the variable goto-address-url-face, the
+theme subtle-hacker uses the same value for the variable as the theme
+gnome2:
+
+ \((standard set bold)
+ \(gnome2 set info-xref)
+ \(jonadab set underline)
+ \(subtle-hacker reset gnome2))
+
+If the car of the list is already a list with car THEME, the
+car of the list is discarded.
+
+If a value has been stored for themes A B and C, and a new value
+is to be stored for theme C, then the old value of C is discarded.
+If a new value is to be stored for theme B, however, the old value
+of B is not discarded because B is not the car of the list.
+
+For variables, list property PROP is `theme-value'.
+For faces, list property PROP is `theme-face'.
+This is used in `custom-do-theme-reset', for example.
+
+The list looks the same in any case; the examples shows a possible
+value of the theme-face property for the region face:
+
+ \((gnome2 set ((t (:foreground \"cyan\" :background \"dark cyan\"))))
+ \(standard set ((((class color) (background dark))
+ \(:background \"blue\"))
+ \(t (:background \"gray\")))))
+
+In this case, the values for the standard and the gnome2 theme were
+stored. The user has not customized the face; had he done that,
+the list would contain an entry for the user theme, too.
+See `custom-known-themes' for a list of known themes."
+ (let ((old (get symbol prop)))
+ (if (eq (car-safe (car-safe old)) theme)
+ (setq old (cdr old)))
+ (put symbol prop (cons (list theme mode value) old))))
+
+(defvar custom-local-buffer nil
+ "Non-nil, in a Customization buffer, means customize a specific buffer.
+If this variable is non-nil, it should be a buffer,
+and it means customize the local bindings of that buffer.
+This variable is a permanent local, and it normally has a local binding
+in every Customization buffer.")
+(put 'custom-local-buffer 'permanent-local t)
+
+(defun custom-set-variables (&rest args)
+ "Initialize variables according to user preferences.
+The settings are registered as theme user.
+The arguments should be a list where each entry has the form:
+
+ (SYMBOL VALUE [NOW [REQUEST [COMMENT]]])
+
+The unevaluated VALUE is stored as the saved value for SYMBOL.
+If NOW is present and non-nil, VALUE is also evaluated and bound as
+the default value for the SYMBOL.
+
+REQUEST is a list of features we must 'require for SYMBOL.
+COMMENT is a comment string about SYMBOL."
+ (apply 'custom-theme-set-variables 'user args))
+
+(defun custom-theme-set-variables (theme &rest args)
+ "Initialize variables according to settings specified by args.
+Records the settings as belonging to THEME.
+
+The arguments should be a list where each entry has the form:
+
+ (SYMBOL VALUE [NOW [REQUEST [COMMENT]]])
+
+The unevaluated VALUE is stored as the saved value for SYMBOL.
+If NOW is present and non-nil, VALUE is also evaluated and bound as
+the default value for the SYMBOL.
+
+REQUEST is a list of features we must 'require for SYMBOL.
+COMMENT is a comment string about SYMBOL.
+
+Several properties of THEME and SYMBOL are used in the process:
+
+If THEME property `theme-immediate' is non-nil, this is equivalent of
+providing the NOW argument to all symbols in the argument list: SYMBOL
+is bound to the evaluated VALUE. The only difference is SYMBOL property
+`force-value': if NOW is non-nil, SYMBOL property force-value is set to
+the symbol `rogue', else if THEME property theme-immediate is non-nil,
+FACE property force-face is set to the symbol `immediate'.
+
+VALUE itself is saved unevaluated as SYMBOL property `saved-value' and
+in SYMBOL's list property `theme-value' \(using `custom-push-theme')."
+ (custom-check-theme theme)
+ (let ((immediate (get theme 'theme-immediate)))
+ (setq args
+ (sort args
+ (lambda (a1 a2)
+ (let* ((sym1 (car a1))
+ (sym2 (car a2))
+ (1-then-2 (memq sym1 (get sym2 'custom-dependencies)))
+ (2-then-1 (memq sym2 (get sym1 'custom-dependencies))))
+ (cond ((and 1-then-2 2-then-1)
+ (error "Circular custom dependency between `%s' and `%s'"
+ sym1 sym2))
+ (2-then-1 nil)
+ (t t))))))
+ (while args
+ (let ((entry (car args)))
+ (if (listp entry)
+ (let* ((symbol (nth 0 entry))
+ (value (nth 1 entry))
+ (now (nth 2 entry))
+ (requests (nth 3 entry))
+ (comment (nth 4 entry))
+ (set (or (get symbol 'custom-set) 'set-default)))
+ (when requests
+ (put symbol 'custom-requests requests)
+ (mapcar 'require requests))
+ (put symbol 'saved-value (list value))
+ (put symbol 'saved-variable-comment comment)
+ (custom-push-theme 'theme-value symbol theme 'set value)
+ ;; Allow for errors in the case where the setter has
+ ;; changed between versions, say.
+ (condition-case nil
+ (cond ((or now immediate)
+ ;; Rogue variable, set it now.
+ (put symbol 'force-value (if now 'rogue 'immediate))
+ (funcall set symbol (eval value)))
+ ((default-boundp symbol)
+ ;; Something already set this, overwrite it.
+ (funcall set symbol (eval value))))
+ (error nil))
+ (setq args (cdr args))
+ (and (or now (default-boundp symbol))
+ (put symbol 'variable-comment comment)))
+ ;; Old format, a plist of SYMBOL VALUE pairs.
+ (message "Warning: old format `custom-set-variables'")
+ (ding)
+ (sit-for 2)
+ (let ((symbol (nth 0 args))
+ (value (nth 1 args)))
+ (put symbol 'saved-value (list value))
+ (custom-push-theme 'theme-value symbol theme 'set value))
+ (setq args (cdr (cdr args))))))))
+
+;; FIXME: This function is never used?
+(defun custom-set-default (variable value)
+ "Default :set function for a customizable variable.
+Normally, this sets the default value of VARIABLE to VALUE,
+but if `custom-local-buffer' is non-nil,
+this sets the local binding in that buffer instead."
+ (if custom-local-buffer
+ (with-current-buffer custom-local-buffer
+ (set variable value))
+ (set-default variable value)))
+
+;;; Theme Manipulation
+
+(defvar custom-loaded-themes nil
+ "Themes in the order they are loaded.")
+
+(defun custom-theme-loaded-p (theme)
+ "Return non-nil when THEME has been loaded."
+ (memq theme custom-loaded-themes))
+
+(defun provide-theme (theme)
+ "Indicate that this file provides THEME.
+Add THEME to `custom-loaded-themes' and `provide' whatever
+is stored in THEME's property `theme-feature'.
+
+Usually the theme-feature property contains a symbol created
+by `custom-make-theme-feature'."
+ (custom-check-theme theme)
+ (provide (get theme 'theme-feature))
+ (setq custom-loaded-themes (nconc (list theme) custom-loaded-themes)))
+
+(defun require-theme (theme)
+ "Try to load a theme by requiring its feature.
+THEME's feature is stored in the theme-feature property.
+
+Usually the theme-feature property contains a symbol created
+by `custom-make-theme-feature'."
+ ;; Note we do no check for validity of the theme here.
+ ;; This allows to pull in themes by a file-name convention
+ (require (or (get theme 'theme-feature)
+ (custom-make-theme-feature theme))))
+
+(defun custom-remove-theme (spec-alist theme)
+ "Detelete all elements from SPEC-ALIST whose car is THEME."
+ (let ((elt (assoc theme spec-alist)))
+ (while elt
+ (setq spec-alist (delete elt spec-alist)
+ elt (assoc theme spec-alist))))
+ spec-alist)
+
+(defun custom-do-theme-reset (theme)
+ "Undo all settings defined by THEME.
+
+Variables remain unchanged if their property `theme-value' does not
+contain a value for THEME. Faces remain unchanged if their property
+`theme-face' does not contain a value for THEME. In either case, all
+settings for THEME are removed from the property and the variable or
+face is set to the `user' theme. See `custom-known-themes' for a list
+of known themes."
+ (let (spec-list)
+ (mapatoms (lambda (symbol)
+ ;; This works even if symbol is both a variable and a
+ ;; face.
+ (setq spec-list (get symbol 'theme-value))
+ (when spec-list
+ (put symbol 'theme-value (custom-remove-theme spec-list theme))
+ (custom-theme-reset-internal symbol 'user))
+ (setq spec-list (get symbol 'theme-face))
+ (when spec-list
+ (put symbol 'theme-face (custom-remove-theme spec-list theme))
+ (custom-theme-reset-internal-face symbol 'user))))))
+
+(defun custom-theme-load-themes (by-theme &rest body)
+ "Load the themes specified by BODY and record them as required by
+theme BY-THEME. BODY is a sequence of either
+
+THEME
+ BY-THEME requires THEME
+\(reset THEME)
+ Undo all the settings made by THEME
+\(hidden THEME)
+ Require THEME but hide it from the user
+
+All the themes loaded for BY-THEME are recorded in BY-THEME's property
+`theme-loads-themes'. Any theme loaded with the hidden predicate will
+be given the property `theme-hidden' unless it has been loaded before.
+Wether a theme has been loaded before is determined by the function
+`custom-theme-loaded-p'."
+ (custom-check-theme by-theme)
+ (let ((theme)
+ (themes-loaded (get by-theme 'theme-loads-themes)))
+ (while theme
+ (setq theme (car body)
+ body (cdr body))
+ (cond ((and (consp theme) (eq (car theme) 'reset))
+ (custom-do-theme-reset (cadr theme)))
+ ((and (consp theme) (eq (car theme) 'hidden))
+ (require-theme (cadr theme))
+ (unless (custom-theme-loaded-p (cadr theme))
+ (put (cadr theme) 'theme-hidden t)))
+ (t
+ (require-theme theme)
+ (put theme 'theme-hidden nil)))
+ (setq themes-loaded (nconc (list theme) themes-loaded)))
+ (put by-theme 'theme-loads-themes themes-loaded)))
+
+(defun custom-load-themes (&rest body)
+ "Load themes for the USER theme as specified by BODY.
+
+See `custom-theme-load-themes' for more information on BODY."
+ (apply 'custom-theme-load-themes 'user body))
+
+; (defsubst copy-upto-last (elt list)
+; "Copy all the elements of the list upto the last occurence of elt"
+; ;; Is it faster to do more work in C than to do less in elisp?
+; (nreverse (cdr (member elt (reverse list)))))
+
+(defun custom-theme-value (theme theme-spec-list)
+ "Determine the value for THEME defined by THEME-SPEC-LIST.
+Returns a list with the original value if found. Nil otherwise.
+
+THEME-SPEC-LIST is an alist with themes as its key. As new themes are
+installed, these are added to the front of THEME-SPEC-LIST.
+Each element has the form
+
+ \(THEME MODE VALUE)
+
+MODE is either the symbol `set' or the symbol `reset'. See
+`custom-push-theme' for more information on the format of
+THEME-SPEC-LIST."
+ ;; Note we do _NOT_ signal an error if the theme is unknown
+ ;; it might have gone away without the user knowing.
+ (let ((value (cdr (assoc theme theme-spec-list))))
+ (if value
+ (if (eq (car value) 'set)
+ (cdr value)
+ (custom-theme-value (cadr value) theme-spec-list)))))
+
+(defun custom-theme-variable-value (variable theme)
+ "Return (list value) value of VARIABLE in THEME.
+If THEME does not define a value for VARIABLE, return nil. The value
+definitions per theme are stored in VARIABLE's property `theme-value'.
+The actual work is done by function `custom-theme-value', which see.
+See `custom-push-theme' for more information on how these definitions
+are stored."
+ (custom-theme-value theme (get variable 'theme-value)))
+
+(defun custom-theme-reset-internal (symbol to-theme)
+ "Reset SYMBOL to the value defined by TO-THEME.
+If SYMBOL is not defined in TO-THEME, reset SYMBOL to the standard
+value. See `custom-theme-variable-value'. The standard value is
+stored in SYMBOL's property `standard-value'."
+ (let ((value (custom-theme-variable-value symbol to-theme))
+ was-in-theme)
+ (setq was-in-theme value)
+ (setq value (or value (get symbol 'standard-value)))
+ (when value
+ (put symbol 'saved-value was-in-theme)
+ (if (or (get 'force-value symbol) (default-boundp symbol))
+ (funcall (or (get symbol 'custom-set) 'set-default) symbol
+ (eval (car value)))))
+ value))
+
+(defun custom-theme-reset-variables (theme &rest args)
+ "Reset the value of the variables to values previously defined.
+Associate this setting with THEME.
+
+ARGS is a list of lists of the form
+
+ (VARIABLE TO-THEME)
+
+This means reset VARIABLE to its value in TO-THEME."
+ (custom-check-theme theme)
+ (mapcar '(lambda (arg)
+ (apply 'custom-theme-reset-internal arg)
+ (custom-push-theme 'theme-value (car arg) theme 'reset (cadr arg)))
+ args))
+
+(defun custom-reset-variables (&rest args)
+ "Reset the value of the variables to values previously saved.
+This is the setting associated the `user' theme.
+
+ARGS is a list of lists of the form
+
+ (VARIABLE TO-THEME)
+
+This means reset VARIABLE to its value in TO-THEME."
+ (apply 'custom-theme-reset-variables 'user args))
+
+;;; The End.
+
+;; Process the defcustoms for variables loaded before this file.
+(while custom-declare-variable-list
+ (apply 'custom-declare-variable (car custom-declare-variable-list))
+ (setq custom-declare-variable-list (cdr custom-declare-variable-list)))
+
+(provide 'custom)
+
+;;; custom.el ends here
projects / emacs.git / commitdiff