`custom-initialize-set'
: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 is `set-default'.
+ give it. The default 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 is
:require VALUE should be a feature symbol. Each feature will be
required after initialization, of the user have saved this
option.
+:version VALUE should be a string specifying that the variable was
+ first introduced, or its default value was changed, in Emacs
+ version VERSION.
+:set-after VARIABLE specifies that SYMBOL should be set after VARIABLE when
+ both have been customized.
Read the section about customization in the Emacs Lisp manual for more
information."
"For customization option SYMBOL, handle KEYWORD with VALUE.
Fourth argument TYPE is the custom option type."
(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))
- (t
- (signal 'error (list "Unknown keyword" keyword)))))
+ (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
+ (signal 'error (list "Unknown keyword" 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.
(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:
+Each argument should be a list of the form:
(SYMBOL VALUE [NOW [REQUEST [COMMENT]]])
See `custom-set-variables' for a description of the arguments ARGS."
(custom-check-theme theme)
+ (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))
+ (1-then-2 t)
+ (2-then-1 nil)
+ ;; Put symbols with :require last. The macro
+ ;; define-minor-mode generates a defcustom
+ ;; with a :require and a :set, where the
+ ;; setter function calls the mode function.
+ ;; Putting symbols with :require last ensures
+ ;; that the mode function will see other
+ ;; customized values rather than default
+ ;; values.
+ (t (nth 3 a2)))))))
(let ((immediate (get theme 'theme-immediate)))
- (while args * etc/custom/example-themes/example-theme.el:
+ (while args
(let ((entry (car args)))
(if (listp entry)
(let* ((symbol (nth 0 entry))
(now (nth 2 entry))
(requests (nth 3 entry))
(comment (nth 4 entry))
- (set (or (get symbol 'custom-set) 'set-default)))
+ (set (or (get symbol 'custom-set) 'custom-set-default)))
(put symbol 'saved-value (list value))
(custom-push-theme 'theme-value symbol theme 'set value)
(put symbol 'saved-variable-comment comment)
+ ;; Allow for errors in the case where the setter has
+ ;; changed between versions, say, but let the user know.
+ (condition-case data
(cond ((or now immediate)
;; Rogue variable, set it now.
(put symbol 'force-value (if now 'rogue 'immediate))
((default-boundp symbol)
;; Something already set this, overwrite it.
(funcall set symbol (eval value))))
+ (error
+ (message "Error setting %s: %s" symbol data)))
(and (or now (default-boundp symbol))
(put symbol 'variable-comment comment))
(when requests
The ARGS are as in `custom-theme-reset-variables'."
(apply #'custom-theme-reset-variables 'user args))
+(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)))
;;; The End.
projects / chise / xemacs-chise.git.1 / blobdiff