;;; custom.el --- tools for declaring and initializing options
;;
-;; Copyright (C) 1996-1997, 1999, 2001-2013 Free Software Foundation,
-;; Inc.
+;; Copyright (C) 1996-1997, 1999, 2001-2013 Free Software Foundation, Inc.
;;
;; Author: Per Abrahamsen <abraham@dina.kvl.dk>
;; Maintainer: FSF
;;; The `defcustom' Macro.
-(defun custom-initialize-default (symbol value)
- "Initialize SYMBOL with VALUE.
+(defun custom-initialize-default (symbol exp)
+ "Initialize SYMBOL with EXP.
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 use it as the default binding for symbol.
-Otherwise, VALUE will be evaluated and used as the default binding for
+Otherwise, EXP will be evaluated and used as the default binding for
symbol."
- (eval `(defvar ,symbol ,(if (get symbol 'saved-value)
- (car (get symbol 'saved-value))
- value))))
+ (eval `(defvar ,symbol ,(let ((sv (get symbol 'saved-value)))
+ (if sv (car sv) exp)))))
-(defun custom-initialize-set (symbol value)
- "Initialize SYMBOL based on VALUE.
+(defun custom-initialize-set (symbol exp)
+ "Initialize SYMBOL based on EXP.
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
- (eval (if (get symbol 'saved-value)
- (car (get symbol 'saved-value))
- value)))))
-
-(defun custom-initialize-reset (symbol value)
- "Initialize SYMBOL based on VALUE.
+if any, or the value of EXP."
+ (condition-case nil
+ (default-toplevel-value symbol)
+ (error
+ (funcall (or (get symbol 'custom-set) #'set-default-toplevel-value)
+ symbol
+ (eval (let ((sv (get symbol 'saved-value)))
+ (if sv (car sv) exp)))))))
+
+(defun custom-initialize-reset (symbol exp)
+ "Initialize SYMBOL based on EXP.
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)
+or (last of all) the value of EXP."
+ (funcall (or (get symbol 'custom-set) #'set-default-toplevel-value)
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.
+ (condition-case nil
+ (let ((def (default-toplevel-value symbol))
+ (getter (get symbol 'custom-get)))
+ (if getter (funcall getter symbol) def))
+ (error
+ (eval (let ((sv (get symbol 'saved-value)))
+ (if sv (car sv) exp)))))))
+
+(defun custom-initialize-changed (symbol exp)
+ "Initialize SYMBOL with EXP.
Like `custom-initialize-reset', but only use the `:set' function if
not using the standard setting.
For the standard setting, use `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)))))
+ (condition-case nil
+ (let ((def (default-toplevel-value symbol)))
+ (funcall (or (get symbol 'custom-set) #'set-default-toplevel-value)
+ symbol
+ (let ((getter (get symbol 'custom-get)))
+ (if getter (funcall getter symbol) def))))
+ (error
+ (cond
+ ((get symbol 'saved-value)
+ (funcall (or (get symbol 'custom-set) #'set-default-toplevel-value)
+ symbol
+ (eval (car (get symbol 'saved-value)))))
+ (t
+ (set-default symbol (eval exp)))))))
(defvar custom-delayed-init-variables nil
"List of variables whose initialization is pending.")
(setq custom-enabled-themes
(delq theme custom-enabled-themes)))))
+;; Only used if window-system not null.
+(declare-function x-get-resource "frame.c"
+ (attribute class &optional component subclass))
+
(defun custom--frame-color-default (frame attribute resource-attr resource-class
tty-default x-default)
(let ((col (face-attribute 'default attribute t)))