(require 'widget)
(defvar custom-define-hook nil
"Hook called after defining each customize option.")
(defvar custom-dont-initialize nil
"Non-nil means `defcustom' should not initialize the variable.
That is used for the sake of `custom-make-dependencies'.
Users should not set it.")
(defvar custom-current-group-alist nil
"Alist of (FILE . GROUP) indicating the current group to use for FILE.")
(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 use it as the default binding for symbol.
Otherwise, VALUE will be evaluated and used as the default binding for
symbol."
(unless (default-boundp symbol)
(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-safe-set (symbol value)
"Like `custom-initialize-set', but catches errors.
If an error occurs during initialization, SYMBOL is set to nil
and no error is thrown. This is meant for use in pre-loaded files
where some variables or functions used to compute VALUE may not yet
be defined. You can then re-evaluate VALUE in startup.el, for instance
using `custom-reevaluate-setting'."
(condition-case nil
(custom-initialize-set symbol value)
(error (set-default symbol nil))))
(defun custom-initialize-safe-default (symbol value)
"Like `custom-initialize-default', but catches errors.
If an error occurs during initialization, SYMBOL is set to nil
and no error is thrown. This is meant for use in pre-loaded files
where some variables or functions used to compute VALUE may not yet
be defined. You can then re-evaluate VALUE in startup.el, for instance
using `custom-reevaluate-setting'."
(condition-case nil
(custom-initialize-default symbol value)
(error (set-default symbol nil))))
(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
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)))))
(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 standard value, 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."
(put symbol 'standard-value (list default))
(when (get symbol 'force-value)
(put symbol 'force-value nil))
(when doc
(put symbol 'variable-documentation doc))
(let ((initialize 'custom-initialize-reset)
(requests nil))
(unless (memq :group args)
(custom-add-to-group (custom-current-group) symbol 'custom-variable))
(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)
(push value requests))
((eq keyword :type)
(put symbol 'custom-type (purecopy value)))
((eq keyword :options)
(if (get symbol 'custom-options)
(mapc (lambda (option)
(custom-add-option symbol option))
value)
(put symbol 'custom-options (copy-sequence value))))
(t
(custom-handle-keyword symbol keyword value
'custom-variable))))))
(put symbol 'custom-requests requests)
(unless custom-dont-initialize
(funcall initialize symbol default)))
(push 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 need 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 symbol's value.
:options VALUE should be a list of valid members of the widget type.
: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-reset'.
: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 `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 `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.
The following common keywords are also meaningful.
:group VALUE should be a customization group.
Add SYMBOL (or FACE with `defface') to that group.
:link LINK-DATA
Include an external link after the documentation string for this
item. This is a sentence containing an active field which
references some other documentation.
There are several alternatives you can use for LINK-DATA:
(custom-manual INFO-NODE)
Link to an Info node; INFO-NODE is a string which specifies
the node name, as in \"(emacs)Top\".
(info-link INFO-NODE)
Like `custom-manual' except that the link appears in the
customization buffer with the Info node name.
(url-link URL)
Link to a web page; URL is a string which specifies the URL.
(emacs-commentary-link LIBRARY)
Link to the commentary section of LIBRARY.
(emacs-library-link LIBRARY)
Link to an Emacs Lisp LIBRARY file.
(file-link FILE)
Link to FILE.
(function-link FUNCTION)
Link to the documentation of FUNCTION.
(variable-link VARIABLE)
Link to the documentation of VARIABLE.
(custom-group-link GROUP)
Link to another customization GROUP.
You can specify the text to use in the customization buffer by
adding `:tag NAME' after the first element of the LINK-DATA; for
example, (info-link :tag \"foo\" \"(emacs)Top\") makes a link to the
Emacs manual which appears in the buffer as `foo'.
An item can have more than one external link; however, most items
have none at all.
:version
VALUE should be a string specifying that the variable was
first introduced, or its default value was changed, in Emacs
version VERSION.
:package-version
VALUE should be a list with the form (PACKAGE . VERSION)
specifying that the variable was first introduced, or its
default value was changed, in PACKAGE version VERSION. This
keyword takes priority over :version. The PACKAGE and VERSION
must appear in the alist `customize-package-emacs-version-alist'.
Since PACKAGE must be unique and the user might see it in an
error message, a good choice is the official name of the
package, such as MH-E or Gnus.
:tag LABEL
Use LABEL, a string, instead of the item's name, to label the item
in customization menus and buffers.
:load FILE
Load file FILE (a string) before displaying this customization
item. Loading is done with `load', and only if the file is
not already loaded.
:set-after VARIABLES
Specifies that SYMBOL should be set after the list of variables
VARIABLES when both have been customized.
If SYMBOL has a local binding, then this form affects the local
binding. This is normally not what you want. Thus, if you need
to load a file defining variables with this form, or with
`defvar' or `defconst', you should always load that file
_outside_ any bindings for these variables. \(`defvar' and
`defconst' behave similarly in this respect.)
See Info node `(elisp) Customization' in the Emacs Lisp manual
for more information."
(declare (doc-string 3))
(nconc (list 'custom-declare-variable
(list 'quote symbol)
(list 'quote value)
doc)
args))
(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-faces', 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]...
For a list of valid keywords, see the common keywords listed in
`defcustom'.
SPEC should be an alist of the form ((DISPLAY ATTS)...).
In the first element, DISPLAY can be `default'. The ATTS in that
element then act as defaults for all the following elements.
Aside from that, DISPLAY specifies conditions to match some or
all frames. For each frame, the first element of SPEC where the
DISPLAY conditions are satisfied is the one that applies to that
frame. The ATTRs in this element take effect, and the following
elements are ignored, on that frame.
In the last element, DISPLAY can be t. That element applies to a
frame if none of the previous elements (except the `default' if
any) did.
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', `:inverse-video', and `:inherit'.
DISPLAY can be `default' (only in the first element), the symbol
t (only in the last element) to match all frames, or an alist of
conditions of the form \(REQ ITEM...). For such an alist to
match a frame, each of the conditions must be satisfied, meaning
that the REQ property of the frame must match one of the
corresponding ITEMs. These are the defined REQ values:
`type' (the value of `window-system')
Under X, in addition to the values `window-system' can take,
`motif', `lucid', `gtk' and `x-toolkit' are allowed, and match when
the Motif toolkit, Lucid toolkit, GTK 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'.
`min-colors' (the minimum number of colors the frame should support)
Should be an integer, it is compared with the result of
`display-color-cells'.
`supports' (only match frames that support the specified face attributes)
Should be a list of face attributes. See the documentation for
the function `display-supports-face-attributes-p' for more
information on exactly how testing is done.
See Info node `(elisp) Customization' in the Emacs Lisp manual
for more information."
(declare (doc-string 3))
(nconc (list 'custom-declare-face (list 'quote face) spec doc) args))
(defun custom-current-group ()
(cdr (assoc load-file-name custom-current-group-alist)))
(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)))
(when 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))))))
(let ((elt (assoc load-file-name custom-current-group-alist)))
(if elt (setcdr elt symbol)
(push (cons load-file-name symbol) custom-current-group-alist)))
(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]...
For a list of valid keywords, see the common keywords listed in
`defcustom'.
See Info node `(elisp) Customization' in the Emacs Lisp manual
for more information."
(declare (doc-string 3))
(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 OPTION and WIDGET, nothing is done."
(let ((members (get group 'custom-group))
(entry (list option widget)))
(unless (member entry members)
(put group 'custom-group (nconc members (list entry))))))
(defun custom-group-of-mode (mode)
"Return the custom group corresponding to the major or minor MODE.
If no such group is found, return nil."
(or (get mode 'custom-mode-group)
(if (or (get mode 'custom-group)
(and (string-match "-mode\\'" (symbol-name mode))
(get (setq mode (intern (substring (symbol-name mode)
0 (match-beginning 0))))
'custom-group)))
mode)))
(defun custom-handle-all-keywords (symbol args type)
"For customization option SYMBOL, handle keyword arguments ARGS.
Third argument TYPE is the custom option type."
(unless (memq :group args)
(custom-add-to-group (custom-current-group) symbol 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 :package-version)
(custom-add-package-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's custom type is a hook, OPTION should be a hook member.
If SYMBOL's custom type is an alist, OPTION specifies a symbol
to offer to the user as a possible key in the alist.
For other custom types, this has no effect."
(let ((options (get symbol 'custom-options)))
(unless (member option options)
(put symbol 'custom-options (cons option options)))))
(defalias 'custom-add-frequent-value 'custom-add-option)
(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-package-version (symbol version)
"To the custom option SYMBOL add the package version VERSION."
(put symbol 'custom-package-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)))))
(defun custom-autoload (symbol load &optional noset)
"Mark SYMBOL as autoloaded custom variable and add dependency LOAD.
If NOSET is non-nil, don't bother autoloading LOAD when setting the variable."
(put symbol 'custom-autoload (if noset 'noset t))
(custom-add-load symbol load))
(defun custom-variable-p (variable)
"Return non-nil if VARIABLE is a custom variable.
This recursively follows aliases."
(setq variable (indirect-variable variable))
(or (get variable 'standard-value)
(get variable 'custom-autoload)))
(defvar custom-load-recursion nil
"Hack to avoid recursive dependencies.")
(defun custom-load-symbol (symbol)
"Load all dependencies for SYMBOL."
(unless custom-load-recursion
(let ((custom-load-recursion t))
(condition-case nil
(require 'cus-load)
(error nil))
(condition-case nil
(require 'cus-start)
(error nil))
(dolist (load (get symbol 'custom-loads))
(cond ((symbolp load) (condition-case nil (require load) (error nil)))
((assoc load load-history))
((let ((regexp (concat "\\(\\`\\|/\\)" (regexp-quote load)
"\\(\\'\\|\\.\\)"))
(found nil))
(dolist (loaded load-history)
(and (stringp (car loaded))
(string-match regexp (car loaded))
(setq found t)))
found))
((equal load "cus-edit"))
(t (condition-case nil (load load) (error nil))))))))
(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-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)))
(defun custom-set-minor-mode (variable value)
":set function for minor mode variables.
Normally, this sets the default value of VARIABLE to nil if VALUE
is nil and to t otherwise,
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
(funcall variable (if value 1 0)))
(funcall variable (if value 1 0))))
(defun custom-quote (sexp)
"Quote SEXP iff it is not self quoting."
(if (or (memq sexp '(t nil))
(keywordp sexp)
(and (listp sexp)
(memq (car sexp) '(lambda)))
(stringp sexp)
(numberp sexp)
(vectorp sexp)
)
sexp
(list 'quote sexp)))
(defun customize-mark-to-save (symbol)
"Mark SYMBOL for later saving.
If the default value of SYMBOL is different from the standard value,
set the `saved-value' property to a list whose car evaluates to the
default value. Otherwise, set it to nil.
To actually save the value, call `custom-save-all'.
Return non-nil iff the `saved-value' property actually changed."
(custom-load-symbol symbol)
(let* ((get (or (get symbol 'custom-get) 'default-value))
(value (funcall get symbol))
(saved (get symbol 'saved-value))
(standard (get symbol 'standard-value))
(comment (get symbol 'customized-variable-comment)))
(if (or (null standard)
(not (equal value (condition-case nil
(eval (car standard))
(error nil)))))
(put symbol 'saved-value (list (custom-quote value)))
(put symbol 'saved-value nil))
(put symbol 'customized-value nil)
(when comment
(put symbol 'saved-variable-comment comment))
(not (equal saved (get symbol 'saved-value)))))
(defun customize-mark-as-set (symbol)
"Mark current value of SYMBOL as being set from customize.
If the default value of SYMBOL is different from the saved value if any,
or else if it is different from the standard value, set the
`customized-value' property to a list whose car evaluates to the
default value. Otherwise, set it to nil.
Return non-nil iff the `customized-value' property actually changed."
(custom-load-symbol symbol)
(let* ((get (or (get symbol 'custom-get) 'default-value))
(value (funcall get symbol))
(customized (get symbol 'customized-value))
(old (or (get symbol 'saved-value) (get symbol 'standard-value))))
(if (not (and old
(equal value (condition-case nil
(eval (car old))
(error nil)))))
(progn (put symbol 'customized-value (list (custom-quote value)))
(custom-push-theme 'theme-value symbol 'user 'set
(custom-quote value)))
(put symbol 'customized-value nil))
(not (equal customized (get symbol 'customized-value)))))
(defun custom-reevaluate-setting (symbol)
"Reset the value of SYMBOL by re-evaluating its saved or standard value.
Use the :set function to do so. This is useful for customizable options
that are defined before their standard value can really be computed.
E.g. dumped variables whose default depends on run-time information."
(funcall (or (get symbol 'custom-set) 'set-default)
symbol
(eval (car (or (get symbol 'saved-value) (get symbol 'standard-value))))))
(defvar custom-known-themes '(user changed)
"Themes that have been defined with `deftheme'.
The default value is the list (user changed). The theme `changed'
contains the settings before custom themes are applied. The
theme `user' contains all the settings the user customized and saved.
Additional themes declared with the `deftheme' macro will be added to
the front of this list.")
(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)))
(defun custom-push-theme (prop symbol theme mode &optional value)
"Record VALUE for face or variable SYMBOL in custom theme THEME.
PROP is `theme-face' for a face, `theme-value' for a variable.
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 SYMBOL will be removed from THEME (VALUE is ignored).
See `custom-known-themes' for a list of known themes."
(unless (memq prop '(theme-value theme-face))
(error "Unknown theme property"))
(let* ((old (get symbol prop))
(setting (assq theme old)) (theme-settings (get theme 'theme-settings)))
(if (eq mode 'reset)
(when setting
(let (res)
(dolist (theme-setting theme-settings)
(if (and (eq (car theme-setting) prop)
(eq (cadr theme-setting) symbol))
(setq res theme-setting)))
(put theme 'theme-settings (delq res theme-settings)))
(put symbol prop (delq setting old)))
(if setting
(let (res)
(dolist (theme-setting theme-settings)
(if (and (eq (car theme-setting) prop)
(eq (cadr theme-setting) symbol))
(setq res theme-setting)))
(put theme 'theme-settings
(cons (list prop symbol theme value)
(delq res theme-settings)))
(setcar (cdr setting) value))
(if (null old)
(if (and (eq prop 'theme-value)
(boundp symbol))
(let ((sv (get symbol 'standard-value)))
(unless (and sv
(equal (eval (car sv)) (symbol-value symbol)))
(setq old (list (list 'changed (symbol-value symbol))))))
(if (and (facep symbol)
(not (face-spec-match-p symbol (get symbol 'face-defface-spec))))
(setq old (list (list 'changed (list
(append '(t) (custom-face-attributes-get symbol nil)))))))))
(put symbol prop (cons (list theme value) old))
(put theme 'theme-settings
(cons (list prop symbol theme value)
theme-settings))))))
(defun custom-set-variables (&rest args)
"Install user customizations of variable values specified in ARGS.
These settings are registered as theme `user'.
The arguments should each be a list of the form:
(SYMBOL EXP [NOW [REQUEST [COMMENT]]])
This stores EXP (without evaluating it) as the saved value for SYMBOL.
If NOW is present and non-nil, then also evaluate EXP and set
the default value for the SYMBOL to the value of EXP.
REQUEST is a list of features we must require in order to
handle SYMBOL properly.
COMMENT is a comment string about SYMBOL."
(apply 'custom-theme-set-variables 'user args))
(defun custom-theme-set-variables (theme &rest args)
"Initialize variables for theme THEME according to settings in ARGS.
Each of the arguments in ARGS should be a list of this form:
(SYMBOL EXP [NOW [REQUEST [COMMENT]]])
This stores EXP (without evaluating it) as the saved value for SYMBOL.
If NOW is present and non-nil, then also evaluate EXP and set
the default value for the SYMBOL to the value of EXP.
REQUEST is a list of features we must require in order to
handle SYMBOL properly.
COMMENT is a comment string about SYMBOL.
EXP 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)
(dolist (entry args)
(let* ((symbol (indirect-variable (nth 0 entry))))
(unless (or (get symbol 'standard-value)
(memq (get symbol 'custom-autoload) '(nil noset)))
(custom-load-symbol symbol))))
(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 (or (nth 3 a2)
(eq (get sym2 'custom-set)
'custom-set-minor-mode))))))))
(while args
(let ((entry (car args)))
(if (listp entry)
(let* ((symbol (indirect-variable (nth 0 entry)))
(value (nth 1 entry))
(now (nth 2 entry))
(requests (nth 3 entry))
(comment (nth 4 entry))
set)
(when requests
(put symbol 'custom-requests requests)
(mapc 'require requests))
(setq set (or (get symbol 'custom-set) 'custom-set-default))
(put symbol 'saved-value (list value))
(put symbol 'saved-variable-comment comment)
(custom-push-theme 'theme-value symbol theme 'set value)
(condition-case data
(cond (now
(put symbol 'force-value t)
(funcall set symbol (eval value)))
((default-boundp symbol)
(funcall set symbol (eval value))))
(error
(message "Error setting %s: %s" symbol data)))
(setq args (cdr args))
(and (or now (default-boundp symbol))
(put symbol 'variable-comment comment)))
(message "Warning: old format `custom-set-variables'")
(ding)
(sit-for 2)
(let ((symbol (indirect-variable (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)))))))
(defmacro deftheme (theme &optional doc &rest ignored)
"Declare THEME to be a Custom theme.
The optional argument DOC is a doc string describing the theme.
Any theme `foo' should be defined in a file called `foo-theme.el';
see `custom-make-theme-feature' for more information."
(let ((feature (custom-make-theme-feature theme)))
(list 'custom-declare-theme (list 'quote theme) (list 'quote feature) doc)))
(defun custom-declare-theme (theme feature &optional doc &rest ignored)
"Like `deftheme', but THEME is evaluated as a normal argument.
FEATURE is the feature this theme provides. Normally, this is a symbol
created from THEME by `custom-make-theme-feature'."
(if (memq theme '(user changed))
(error "Custom theme cannot be named %S" theme))
(add-to-list 'custom-known-themes theme)
(put theme 'theme-feature feature)
(when doc (put theme 'theme-documentation doc)))
(defun custom-make-theme-feature (theme)
"Given a symbol THEME, create a new symbol by appending \"-theme\".
Store this symbol in the `theme-feature' property of THEME.
Calling `provide-theme' to provide THEME actually puts `THEME-theme'
into `features'.
This allows for a file-name convention for autoloading themes:
Every theme X has a property `provide-theme' whose value is \"X-theme\".
\(load-theme X) then attempts to load the file `X-theme.el'."
(intern (concat (symbol-name theme) "-theme")))
(defcustom custom-theme-directory
(if (eq system-type 'ms-dos)
"~/_emacs.d/"
"~/.emacs.d/")
"Directory in which Custom theme files should be written.
`load-theme' searches this directory in addition to load-path.
The command `customize-create-theme' writes the files it produces
into this directory."
:type 'string
:group 'customize
:version "22.1")
(defun provide-theme (theme)
"Indicate that this file provides THEME.
This calls `provide' to provide the feature name stored in THEME's
property `theme-feature' (which is usually a symbol created by
`custom-make-theme-feature')."
(if (memq theme '(user changed))
(error "Custom theme cannot be named %S" theme))
(custom-check-theme theme)
(provide (get theme 'theme-feature))
(push theme custom-enabled-themes)
(let ((custom-enabling-themes t))
(enable-theme 'user)))
(defun load-theme (theme)
"Load a theme's settings from its file.
This also enables the theme; use `disable-theme' to disable it."
(interactive "SCustom theme name: ")
(when (custom-theme-p theme)
(disable-theme theme)
(put theme 'theme-settings nil)
(put theme 'theme-feature nil)
(put theme 'theme-documentation nil))
(let ((load-path (if (file-directory-p custom-theme-directory)
(cons custom-theme-directory load-path)
load-path)))
(load (symbol-name (custom-make-theme-feature theme)))))
(defvar custom-enabling-themes nil)
(defun enable-theme (theme)
"Reenable all variable and face settings defined by THEME.
The newly enabled theme gets the highest precedence (after `user').
If it is already enabled, just give it highest precedence (after `user').
If THEME does not specify any theme settings, this tries to load
the theme from its theme file, by calling `load-theme'."
(interactive "SEnable Custom theme: ")
(if (not (custom-theme-p theme))
(load-theme theme)
(let ((settings (get theme 'theme-settings)))
(dolist (s settings)
(let* ((prop (car s))
(symbol (cadr s))
(spec-list (get symbol prop)))
(put symbol prop (cons (cddr s) (assq-delete-all theme spec-list)))
(if (eq prop 'theme-value)
(custom-theme-recalc-variable symbol)
(custom-theme-recalc-face symbol)))))
(unless (eq theme 'user)
(setq custom-enabled-themes
(cons theme (delq theme custom-enabled-themes)))
(unless custom-enabling-themes
(enable-theme 'user)))))
(defcustom custom-enabled-themes nil
"List of enabled Custom Themes, highest precedence first.
This does not include the `user' theme, which is set by Customize,
and always takes precedence over other Custom Themes."
:group 'customize
:type '(repeat symbol)
:set (lambda (symbol themes)
(unless custom-enabling-themes
(let ((custom-enabling-themes t) failures)
(setq themes (delq 'user (delete-dups themes)))
(if (boundp symbol)
(dolist (theme (symbol-value symbol))
(if (not (memq theme themes))
(disable-theme theme))))
(dolist (theme (reverse themes))
(condition-case nil
(enable-theme theme)
(error (progn (push theme failures)
(setq themes (delq theme themes))))))
(enable-theme 'user)
(custom-set-default symbol themes)
(if failures
(message "Failed to enable themes: %s"
(mapconcat 'symbol-name failures " ")))))))
(defsubst custom-theme-enabled-p (theme)
"Return non-nil if THEME is enabled."
(memq theme custom-enabled-themes))
(defun disable-theme (theme)
"Disable all variable and face settings defined by THEME.
See `custom-enabled-themes' for a list of enabled themes."
(interactive (list (intern
(completing-read
"Disable Custom theme: "
(mapcar 'symbol-name custom-enabled-themes)
nil t))))
(when (custom-theme-enabled-p theme)
(let ((settings (get theme 'theme-settings)))
(dolist (s settings)
(let* ((prop (car s))
(symbol (cadr s))
(spec-list (get symbol prop)))
(put symbol prop (assq-delete-all theme spec-list))
(if (eq prop 'theme-value)
(custom-theme-recalc-variable symbol)
(custom-theme-recalc-face symbol)))))
(setq custom-enabled-themes
(delq theme custom-enabled-themes))))
(defun custom-variable-theme-value (variable)
"Return (list VALUE) indicating the custom theme value of VARIABLE.
That is to say, it specifies what the value should be according to
currently enabled custom themes.
This function returns nil if no custom theme specifies a value for VARIABLE."
(let* ((theme-value (get variable 'theme-value)))
(if theme-value
(cdr (car theme-value)))))
(defun custom-theme-recalc-variable (variable)
"Set VARIABLE according to currently enabled custom themes."
(let ((valspec (custom-variable-theme-value variable)))
(if valspec
(put variable 'saved-value valspec)
(setq valspec (get variable 'standard-value)))
(if (and valspec
(or (get variable 'force-value)
(default-boundp variable)))
(funcall (or (get variable 'custom-set) 'set-default) variable
(eval (car valspec))))))
(defun custom-theme-recalc-face (face)
"Set FACE according to currently enabled custom themes."
(if (facep face)
(let ((theme-faces (reverse (get face 'theme-face))))
(dolist (spec theme-faces)
(face-spec-set face (cadr spec))))))
(defun custom-theme-reset-variables (theme &rest args)
"Reset some variable settings in THEME to their values in other themes.
Each of the arguments ARGS has this form:
(VARIABLE IGNORED)
This means reset VARIABLE. (The argument IGNORED is ignored)."
(custom-check-theme theme)
(dolist (arg args)
(custom-push-theme 'theme-value (car arg) theme 'reset)))
(defun custom-reset-variables (&rest args)
"Reset the specs of some variables to their values in other themes.
This creates settings in the `user' theme.
Each of the arguments ARGS has this form:
(VARIABLE IGNORED)
This means reset VARIABLE. (The argument IGNORED is ignored)."
(apply 'custom-theme-reset-variables 'user args))
(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)