(defvar custom-declare-variable-list nil
"Record `defcustom' calls made before `custom.el' is loaded to handle them.
Each element of this list holds the arguments to one call to `defcustom'.")
(defun custom-declare-variable-early (&rest arguments)
(setq custom-declare-variable-list
(cons arguments custom-declare-variable-list)))
(defmacro lambda (&rest cdr)
"Return a lambda expression.
A call of the form (lambda ARGS DOCSTRING INTERACTIVE BODY) is
self-quoting; the result of evaluating the lambda expression is the
expression itself. The lambda expression may then be treated as a
function, i.e., stored as the function value of a symbol, passed to
funcall or mapcar, etc.
ARGS should take the same form as an argument list for a `defun'.
DOCSTRING is an optional documentation string.
If present, it should describe how to call the function.
But documentation strings are usually not useful in nameless functions.
INTERACTIVE should be a call to the function `interactive', which see.
It may also be omitted.
BODY should be a list of lisp expressions."
(list 'function (cons 'lambda cdr)))
(defmacro push (newelt listname)
"Add NEWELT to the list stored in the symbol LISTNAME.
This is equivalent to (setq LISTNAME (cons NEWELT LISTNAME)).
LISTNAME must be a symbol."
(list 'setq listname
(list 'cons newelt listname)))
(defmacro pop (listname)
"Return the first element of LISTNAME's value, and remove it from the list.
LISTNAME must be a symbol whose value is a list.
If the value is nil, `pop' returns nil but does not actually
change the list."
(list 'prog1 (list 'car listname)
(list 'setq listname (list 'cdr listname))))
(defmacro when (cond &rest body)
"If COND yields non-nil, do BODY, else return nil."
(list 'if cond (cons 'progn body)))
(defmacro unless (cond &rest body)
"If COND yields nil, do BODY, else return nil."
(cons 'if (cons cond (cons nil body))))
(defmacro dolist (spec &rest body)
"(dolist (VAR LIST [RESULT]) BODY...): loop over a list.
Evaluate BODY with VAR bound to each car from LIST, in turn.
Then evaluate RESULT to get return value, default nil."
(let ((temp (make-symbol "--dolist-temp--")))
(list 'let (list (list temp (nth 1 spec)) (car spec))
(list 'while temp
(list 'setq (car spec) (list 'car temp))
(cons 'progn
(append body
(list (list 'setq temp (list 'cdr temp))))))
(if (cdr (cdr spec))
(cons 'progn
(cons (list 'setq (car spec) nil) (cdr (cdr spec))))))))
(defmacro dotimes (spec &rest body)
"(dotimes (VAR COUNT [RESULT]) BODY...): loop a certain number of times.
Evaluate BODY with VAR bound to successive integers running from 0,
inclusive, to COUNT, exclusive. Then evaluate RESULT to get
the return value (nil if RESULT is omitted)."
(let ((temp (make-symbol "--dotimes-temp--")))
(list 'let (list (list temp (nth 1 spec)) (list (car spec) 0))
(list 'while (list '< (car spec) temp)
(cons 'progn
(append body (list (list 'setq (car spec)
(list '1+ (car spec)))))))
(if (cdr (cdr spec))
(car (cdr (cdr spec)))
nil))))
(defsubst caar (x)
"Return the car of the car of X."
(car (car x)))
(defsubst cadr (x)
"Return the car of the cdr of X."
(car (cdr x)))
(defsubst cdar (x)
"Return the cdr of the car of X."
(cdr (car x)))
(defsubst cddr (x)
"Return the cdr of the cdr of X."
(cdr (cdr x)))
(defun last (x &optional n)
"Return the last link of the list X. Its car is the last element.
If X is nil, return nil.
If N is non-nil, return the Nth-to-last link of X.
If N is bigger than the length of X, return X."
(if n
(let ((m 0) (p x))
(while (consp p)
(setq m (1+ m) p (cdr p)))
(if (<= n 0) p
(if (< n m) (nthcdr (- m n) x) x)))
(while (consp (cdr x))
(setq x (cdr x)))
x))
(defun butlast (x &optional n)
"Returns a copy of LIST with the last N elements removed."
(if (and n (<= n 0)) x
(nbutlast (copy-sequence x) n)))
(defun nbutlast (x &optional n)
"Modifies LIST to remove the last N elements."
(let ((m (length x)))
(or n (setq n 1))
(and (< n m)
(progn
(if (> n 0) (setcdr (nthcdr (- (1- m) n) x) nil))
x))))
(defun remove (elt seq)
"Return a copy of SEQ with all occurences of ELT removed.
SEQ must be a list, vector, or string. The comparison is done with `equal'."
(if (nlistp seq)
(delete elt seq)
(delete elt (copy-sequence seq))))
(defun remq (elt list)
"Return a copy of LIST with all occurences of ELT removed.
The comparison is done with `eq'."
(if (memq elt list)
(delq elt (copy-sequence list))
list))
(defun assoc-default (key alist &optional test default)
"Find object KEY in a pseudo-alist ALIST.
ALIST is a list of conses or objects. Each element (or the element's car,
if it is a cons) is compared with KEY by evaluating (TEST (car elt) KEY).
If that is non-nil, the element matches;
then `assoc-default' returns the element's cdr, if it is a cons,
or DEFAULT if the element is not a cons.
If no element matches, the value is nil.
If TEST is omitted or nil, `equal' is used."
(let (found (tail alist) value)
(while (and tail (not found))
(let ((elt (car tail)))
(when (funcall (or test 'equal) (if (consp elt) (car elt) elt) key)
(setq found t value (if (consp elt) (cdr elt) default))))
(setq tail (cdr tail)))
value))
(defun assoc-ignore-case (key alist)
"Like `assoc', but ignores differences in case and text representation.
KEY must be a string. Upper-case and lower-case letters are treated as equal.
Unibyte strings are converted to multibyte for comparison."
(let (element)
(while (and alist (not element))
(if (eq t (compare-strings key 0 nil (car (car alist)) 0 nil t))
(setq element (car alist)))
(setq alist (cdr alist)))
element))
(defun assoc-ignore-representation (key alist)
"Like `assoc', but ignores differences in text representation.
KEY must be a string.
Unibyte strings are converted to multibyte for comparison."
(let (element)
(while (and alist (not element))
(if (eq t (compare-strings key 0 nil (car (car alist)) 0 nil))
(setq element (car alist)))
(setq alist (cdr alist)))
element))
(defun member-ignore-case (elt list)
"Like `member', but ignores differences in case and text representation.
ELT must be a string. Upper-case and lower-case letters are treated as equal.
Unibyte strings are converted to multibyte for comparison."
(while (and list (not (eq t (compare-strings elt 0 nil (car list) 0 nil t))))
(setq list (cdr list)))
list)
(defun undefined ()
(interactive)
(ding))
(put 'undefined 'suppress-keymap t)
(defun suppress-keymap (map &optional nodigits)
"Make MAP override all normally self-inserting keys to be undefined.
Normally, as an exception, digits and minus-sign are set to make prefix args,
but optional second arg NODIGITS non-nil treats them like other chars."
(substitute-key-definition 'self-insert-command 'undefined map global-map)
(or nodigits
(let (loop)
(define-key map "-" 'negative-argument)
(setq loop ?0)
(while (<= loop ?9)
(define-key map (char-to-string loop) 'digit-argument)
(setq loop (1+ loop))))))
(defvar key-substitution-in-progress nil
"Used internally by substitute-key-definition.")
(defun substitute-key-definition (olddef newdef keymap &optional oldmap prefix)
"Replace OLDDEF with NEWDEF for any keys in KEYMAP now defined as OLDDEF.
In other words, OLDDEF is replaced with NEWDEF where ever it appears.
Alternatively, if optional fourth argument OLDMAP is specified, we redefine
in KEYMAP as NEWDEF those keys which are defined as OLDDEF in OLDMAP."
(or prefix (setq prefix ""))
(let* ((scan (or oldmap keymap))
(vec1 (vector nil))
(prefix1 (vconcat prefix vec1))
(key-substitution-in-progress
(cons scan key-substitution-in-progress)))
(while (consp scan)
(if (consp (car scan))
(let ((char (car (car scan)))
(defn (cdr (car scan))))
(aset vec1 0 char)
(aset prefix1 (length prefix) char)
(let (inner-def skipped)
(while (stringp (car-safe defn))
(setq skipped (cons (car defn) skipped))
(setq defn (cdr defn)))
(and (consp defn) (consp (car defn))
(setq defn (cdr defn)))
(setq inner-def defn)
(while (and (symbolp inner-def)
(fboundp inner-def))
(setq inner-def (symbol-function inner-def)))
(if (or (eq defn olddef)
(and (or (stringp defn) (vectorp defn))
(equal defn olddef)))
(define-key keymap prefix1 (nconc (nreverse skipped) newdef))
(if (and (keymapp defn)
(let ((elt (lookup-key keymap prefix1)))
(or (null elt)
(keymapp elt)))
(not (memq inner-def
key-substitution-in-progress)))
(substitute-key-definition olddef newdef keymap
inner-def
prefix1)))))
(if (vectorp (car scan))
(let* ((array (car scan))
(len (length array))
(i 0))
(while (< i len)
(let ((char i) (defn (aref array i)))
(aset vec1 0 char)
(aset prefix1 (length prefix) char)
(let (inner-def skipped)
(while (stringp (car-safe defn))
(setq skipped (cons (car defn) skipped))
(setq defn (cdr defn)))
(and (consp defn) (consp (car defn))
(setq defn (cdr defn)))
(setq inner-def defn)
(while (and (symbolp inner-def)
(fboundp inner-def))
(setq inner-def (symbol-function inner-def)))
(if (or (eq defn olddef)
(and (or (stringp defn) (vectorp defn))
(equal defn olddef)))
(define-key keymap prefix1
(nconc (nreverse skipped) newdef))
(if (and (keymapp defn)
(let ((elt (lookup-key keymap prefix1)))
(or (null elt)
(keymapp elt)))
(not (memq inner-def
key-substitution-in-progress)))
(substitute-key-definition olddef newdef keymap
inner-def
prefix1)))))
(setq i (1+ i))))
(if (char-table-p (car scan))
(map-char-table
(function (lambda (char defn)
(let ()
(aset vec1 0 char)
(aset prefix1 (length prefix) char)
(let (inner-def skipped)
(while (stringp (car-safe defn))
(setq skipped (cons (car defn) skipped))
(setq defn (cdr defn)))
(and (consp defn) (consp (car defn))
(setq defn (cdr defn)))
(setq inner-def defn)
(while (and (symbolp inner-def)
(fboundp inner-def))
(setq inner-def (symbol-function inner-def)))
(if (or (eq defn olddef)
(and (or (stringp defn) (vectorp defn))
(equal defn olddef)))
(define-key keymap prefix1
(nconc (nreverse skipped) newdef))
(if (and (keymapp defn)
(let ((elt (lookup-key keymap prefix1)))
(or (null elt)
(keymapp elt)))
(not (memq inner-def
key-substitution-in-progress)))
(substitute-key-definition olddef newdef keymap
inner-def
prefix1)))))))
(car scan)))))
(setq scan (cdr scan)))))
(defun define-key-after (keymap key definition &optional after)
"Add binding in KEYMAP for KEY => DEFINITION, right after AFTER's binding.
This is like `define-key' except that the binding for KEY is placed
just after the binding for the event AFTER, instead of at the beginning
of the map. Note that AFTER must be an event type (like KEY), NOT a command
\(like DEFINITION).
If AFTER is t or omitted, the new binding goes at the end of the keymap.
KEY must contain just one event type--that is to say, it must be a
string or vector of length 1, but AFTER should be a single event
type--a symbol or a character, not a sequence.
Bindings are always added before any inherited map.
The order of bindings in a keymap matters when it is used as a menu."
(unless after (setq after t))
(or (keymapp keymap)
(signal 'wrong-type-argument (list 'keymapp keymap)))
(if (> (length key) 1)
(error "multi-event key specified in `define-key-after'"))
(let ((tail keymap) done inserted
(first (aref key 0)))
(while (and (not done) tail)
(if (eq (car-safe (car (cdr tail))) first)
(setcdr tail (cdr (cdr tail))))
(if (or (and (eq (car-safe (car tail)) after)
(not (eq after t)))
(eq (car (cdr tail)) 'keymap)
(null (cdr tail)))
(progn
(if (eq (car (cdr tail)) 'keymap)
(setq done t))
(or inserted
(setcdr tail (cons (cons (aref key 0) definition) (cdr tail))))
(setq inserted t)))
(setq tail (cdr tail)))))
(defmacro kbd (keys)
"Convert KEYS to the internal Emacs key representation.
KEYS should be a string constant in the format used for
saving keyboard macros (see `insert-kbd-macro')."
(read-kbd-macro keys))
(put 'keyboard-translate-table 'char-table-extra-slots 0)
(defun keyboard-translate (from to)
"Translate character FROM to TO at a low level.
This function creates a `keyboard-translate-table' if necessary
and then modifies one entry in it."
(or (char-table-p keyboard-translate-table)
(setq keyboard-translate-table
(make-char-table 'keyboard-translate-table nil)))
(aset keyboard-translate-table from to))
(defvar global-map nil
"Default global keymap mapping Emacs keyboard input into commands.
The value is a keymap which is usually (but not necessarily) Emacs's
global map.")
(defvar esc-map nil
"Default keymap for ESC (meta) commands.
The normal global definition of the character ESC indirects to this keymap.")
(defvar ctl-x-map nil
"Default keymap for C-x commands.
The normal global definition of the character C-x indirects to this keymap.")
(defvar ctl-x-4-map (make-sparse-keymap)
"Keymap for subcommands of C-x 4")
(defalias 'ctl-x-4-prefix ctl-x-4-map)
(define-key ctl-x-map "4" 'ctl-x-4-prefix)
(defvar ctl-x-5-map (make-sparse-keymap)
"Keymap for frame commands.")
(defalias 'ctl-x-5-prefix ctl-x-5-map)
(define-key ctl-x-map "5" 'ctl-x-5-prefix)
(defconst listify-key-sequence-1 (logior 128 (read "?\\M-\\^@")))
(defun listify-key-sequence (key)
"Convert a key sequence to a list of events."
(if (vectorp key)
(append key nil)
(mapcar (function (lambda (c)
(if (> c 127)
(logxor c listify-key-sequence-1)
c)))
(append key nil))))
(defsubst eventp (obj)
"True if the argument is an event object."
(or (integerp obj)
(and (symbolp obj)
(get obj 'event-symbol-elements))
(and (consp obj)
(symbolp (car obj))
(get (car obj) 'event-symbol-elements))))
(defun event-modifiers (event)
"Returns a list of symbols representing the modifier keys in event EVENT.
The elements of the list may include `meta', `control',
`shift', `hyper', `super', `alt', `click', `double', `triple', `drag',
and `down'."
(let ((type event))
(if (listp type)
(setq type (car type)))
(if (symbolp type)
(cdr (get type 'event-symbol-elements))
(let ((list nil))
(or (zerop (logand type ?\M-\^@))
(setq list (cons 'meta list)))
(or (and (zerop (logand type ?\C-\^@))
(>= (logand type 127) 32))
(setq list (cons 'control list)))
(or (and (zerop (logand type ?\S-\^@))
(= (logand type 255) (downcase (logand type 255))))
(setq list (cons 'shift list)))
(or (zerop (logand type ?\H-\^@))
(setq list (cons 'hyper list)))
(or (zerop (logand type ?\s-\^@))
(setq list (cons 'super list)))
(or (zerop (logand type ?\A-\^@))
(setq list (cons 'alt list)))
list))))
(defun event-basic-type (event)
"Returns the basic type of the given event (all modifiers removed).
The value is a printing character (not upper case) or a symbol."
(if (consp event)
(setq event (car event)))
(if (symbolp event)
(car (get event 'event-symbol-elements))
(let ((base (logand event (1- (lsh 1 18)))))
(downcase (if (< base 32) (logior base 64) base)))))
(defsubst mouse-movement-p (object)
"Return non-nil if OBJECT is a mouse movement event."
(and (consp object)
(eq (car object) 'mouse-movement)))
(defsubst event-start (event)
"Return the starting position of EVENT.
If EVENT is a mouse press or a mouse click, this returns the location
of the event.
If EVENT is a drag, this returns the drag's starting position.
The return value is of the form
(WINDOW BUFFER-POSITION (X . Y) TIMESTAMP)
The `posn-' functions access elements of such lists."
(nth 1 event))
(defsubst event-end (event)
"Return the ending location of EVENT. EVENT should be a click or drag event.
If EVENT is a click event, this function is the same as `event-start'.
The return value is of the form
(WINDOW BUFFER-POSITION (X . Y) TIMESTAMP)
The `posn-' functions access elements of such lists."
(nth (if (consp (nth 2 event)) 2 1) event))
(defsubst event-click-count (event)
"Return the multi-click count of EVENT, a click or drag event.
The return value is a positive integer."
(if (integerp (nth 2 event)) (nth 2 event) 1))
(defsubst posn-window (position)
"Return the window in POSITION.
POSITION should be a list of the form
(WINDOW BUFFER-POSITION (X . Y) TIMESTAMP)
as returned by the `event-start' and `event-end' functions."
(nth 0 position))
(defsubst posn-point (position)
"Return the buffer location in POSITION.
POSITION should be a list of the form
(WINDOW BUFFER-POSITION (X . Y) TIMESTAMP)
as returned by the `event-start' and `event-end' functions."
(if (consp (nth 1 position))
(car (nth 1 position))
(nth 1 position)))
(defsubst posn-x-y (position)
"Return the x and y coordinates in POSITION.
POSITION should be a list of the form
(WINDOW BUFFER-POSITION (X . Y) TIMESTAMP)
as returned by the `event-start' and `event-end' functions."
(nth 2 position))
(defun posn-col-row (position)
"Return the column and row in POSITION, measured in characters.
POSITION should be a list of the form
(WINDOW BUFFER-POSITION (X . Y) TIMESTAMP)
as returned by the `event-start' and `event-end' functions.
For a scroll-bar event, the result column is 0, and the row
corresponds to the vertical position of the click in the scroll bar."
(let ((pair (nth 2 position))
(window (posn-window position)))
(if (eq (if (consp (nth 1 position))
(car (nth 1 position))
(nth 1 position))
'vertical-scroll-bar)
(cons 0 (scroll-bar-scale pair (1- (window-height window))))
(if (eq (if (consp (nth 1 position))
(car (nth 1 position))
(nth 1 position))
'horizontal-scroll-bar)
(cons (scroll-bar-scale pair (window-width window)) 0)
(let* ((frame (if (framep window) window (window-frame window)))
(x (/ (car pair) (frame-char-width frame)))
(y (/ (cdr pair) (frame-char-height frame))))
(cons x y))))))
(defsubst posn-timestamp (position)
"Return the timestamp of POSITION.
POSITION should be a list of the form
(WINDOW BUFFER-POSITION (X . Y) TIMESTAMP)
as returned by the `event-start' and `event-end' functions."
(nth 3 position))
(defalias 'dot 'point)
(defalias 'dot-marker 'point-marker)
(defalias 'dot-min 'point-min)
(defalias 'dot-max 'point-max)
(defalias 'window-dot 'window-point)
(defalias 'set-window-dot 'set-window-point)
(defalias 'read-input 'read-string)
(defalias 'send-string 'process-send-string)
(defalias 'send-region 'process-send-region)
(defalias 'show-buffer 'set-window-buffer)
(defalias 'buffer-flush-undo 'buffer-disable-undo)
(defalias 'eval-current-buffer 'eval-buffer)
(defalias 'compiled-function-p 'byte-code-function-p)
(defalias 'define-function 'defalias)
(defalias 'sref 'aref)
(make-obsolete 'sref 'aref "20.4")
(make-obsolete 'char-bytes "Now this function always returns 1" "20.4")
(defun baud-rate ()
"Obsolete function returning the value of the `baud-rate' variable.
Please convert your programs to use the variable `baud-rate' directly."
baud-rate)
(defalias 'focus-frame 'ignore)
(defalias 'unfocus-frame 'ignore)
(defalias 'string= 'string-equal)
(defalias 'string< 'string-lessp)
(defalias 'move-marker 'set-marker)
(defalias 'not 'null)
(defalias 'rplaca 'setcar)
(defalias 'rplacd 'setcdr)
(defalias 'beep 'ding) (defalias 'indent-to-column 'indent-to)
(defalias 'backward-delete-char 'delete-backward-char)
(defalias 'search-forward-regexp (symbol-function 're-search-forward))
(defalias 'search-backward-regexp (symbol-function 're-search-backward))
(defalias 'int-to-string 'number-to-string)
(defalias 'store-match-data 'set-match-data)
(defalias 'point-at-eol 'line-end-position)
(defalias 'point-at-bol 'line-beginning-position)
(defalias 'string-to-int 'string-to-number)
(defun make-local-hook (hook)
"Make the hook HOOK local to the current buffer.
The return value is HOOK.
You never need to call this function now that `add-hook' does it for you
if its LOCAL argument is non-nil.
When a hook is local, its local and global values
work in concert: running the hook actually runs all the hook
functions listed in *either* the local value *or* the global value
of the hook variable.
This function works by making `t' a member of the buffer-local value,
which acts as a flag to run the hook functions in the default value as
well. This works for all normal hooks, but does not work for most
non-normal hooks yet. We will be changing the callers of non-normal
hooks so that they can handle localness; this has to be done one by
one.
This function does nothing if HOOK is already local in the current
buffer.
Do not use `make-local-variable' to make a hook variable buffer-local."
(if (local-variable-p hook)
nil
(or (boundp hook) (set hook nil))
(make-local-variable hook)
(set hook (list t)))
hook)
(defun add-hook (hook function &optional append local)
"Add to the value of HOOK the function FUNCTION.
FUNCTION is not added if already present.
FUNCTION is added (if necessary) at the beginning of the hook list
unless the optional argument APPEND is non-nil, in which case
FUNCTION is added at the end.
The optional fourth argument, LOCAL, if non-nil, says to modify
the hook's buffer-local value rather than its default value.
This makes the hook buffer-local if needed.
To make a hook variable buffer-local, always use
`make-local-hook', not `make-local-variable'.
HOOK should be a symbol, and FUNCTION may be any valid function. If
HOOK is void, it is first set to nil. If HOOK's value is a single
function, it is changed to a list of functions."
(or (boundp hook) (set hook nil))
(or (default-boundp hook) (set-default hook nil))
(if local (unless (local-variable-if-set-p hook) (make-local-hook hook))
(unless (and (consp (symbol-value hook)) (memq t (symbol-value hook)))
(setq local t)))
(let ((hook-value (if local (symbol-value hook) (default-value hook))))
(when (or (not (listp hook-value)) (eq (car hook-value) 'lambda))
(setq hook-value (list hook-value)))
(unless (member function hook-value)
(setq hook-value
(if append
(append hook-value (list function))
(cons function hook-value))))
(if local (set hook hook-value) (set-default hook hook-value))))
(defun remove-hook (hook function &optional local)
"Remove from the value of HOOK the function FUNCTION.
HOOK should be a symbol, and FUNCTION may be any valid function. If
FUNCTION isn't the value of HOOK, or, if FUNCTION doesn't appear in the
list of hooks to run in HOOK, then nothing is done. See `add-hook'.
The optional third argument, LOCAL, if non-nil, says to modify
the hook's buffer-local value rather than its default value.
This makes the hook buffer-local if needed.
To make a hook variable buffer-local, always use
`make-local-hook', not `make-local-variable'."
(or (boundp hook) (set hook nil))
(or (default-boundp hook) (set-default hook nil))
(if local (unless (local-variable-if-set-p hook) (make-local-hook hook))
(unless (and (consp (symbol-value hook)) (memq t (symbol-value hook)))
(setq local t)))
(let ((hook-value (if local (symbol-value hook) (default-value hook))))
(if (or (not (listp hook-value)) (eq (car hook-value) 'lambda))
(if (equal hook-value function) (setq hook-value nil))
(setq hook-value (delete function (copy-sequence hook-value))))
(if local (set hook hook-value) (set-default hook hook-value))))
(defun add-to-list (list-var element &optional append)
"Add to the value of LIST-VAR the element ELEMENT if it isn't there yet.
The test for presence of ELEMENT is done with `equal'.
If ELEMENT is added, it is added at the beginning of the list,
unless the optional argument APPEND is non-nil, in which case
ELEMENT is added at the end.
If you want to use `add-to-list' on a variable that is not defined
until a certain package is loaded, you should put the call to `add-to-list'
into a hook function that will be run only after loading the package.
`eval-after-load' provides one way to do this. In some cases
other hooks, such as major mode hooks, can do the job."
(if (member element (symbol-value list-var))
(symbol-value list-var)
(set list-var
(if append
(append (symbol-value list-var) (list element))
(cons element (symbol-value list-var))))))
(defun eval-after-load (file form)
"Arrange that, if FILE is ever loaded, FORM will be run at that time.
This makes or adds to an entry on `after-load-alist'.
If FILE is already loaded, evaluate FORM right now.
It does nothing if FORM is already on the list for FILE.
FILE must match exactly. Normally FILE is the name of a library,
with no directory or extension specified, since that is how `load'
is normally called."
(load-symbol-file-load-history)
(or (assoc file after-load-alist)
(setq after-load-alist (cons (list file) after-load-alist)))
(let ((elt (assoc file after-load-alist)))
(or (member form (cdr elt))
(progn
(nconc elt (list form))
(and (assoc file load-history)
(eval form)))))
form)
(defun eval-next-after-load (file)
"Read the following input sexp, and run it whenever FILE is loaded.
This makes or adds to an entry on `after-load-alist'.
FILE should be the name of a library, with no directory name."
(eval-after-load file (read)))
(defvar read-quoted-char-radix 8
"*Radix for \\[quoted-insert] and other uses of `read-quoted-char'.
Legitimate radix values are 8, 10 and 16.")
(custom-declare-variable-early
'read-quoted-char-radix 8
"*Radix for \\[quoted-insert] and other uses of `read-quoted-char'.
Legitimate radix values are 8, 10 and 16."
:type '(choice (const 8) (const 10) (const 16))
:group 'editing-basics)
(defun read-quoted-char (&optional prompt)
"Like `read-char', but do not allow quitting.
Also, if the first character read is an octal digit,
we read any number of octal digits and return the
specified character code. Any nondigit terminates the sequence.
If the terminator is RET, it is discarded;
any other terminator is used itself as input.
The optional argument PROMPT specifies a string to use to prompt the user.
The variable `read-quoted-char-radix' controls which radix to use
for numeric input."
(let ((message-log-max nil) done (first t) (code 0) char)
(while (not done)
(let ((inhibit-quit first)
(help-char nil)
(help-form
"Type the special character you want to use,
or the octal character code.
RET terminates the character code and is discarded;
any other non-digit terminates the character code and is then used as input."))
(setq char (read-event (and prompt (format "%s-" prompt)) t))
(if inhibit-quit (setq quit-flag nil)))
(and char
(let ((translated (lookup-key function-key-map (vector char))))
(if (arrayp translated)
(setq char (aref translated 0)))))
(cond ((null char))
((not (integerp char))
(setq unread-command-events (list char)
done t))
((/= (logand char ?\M-\^@) 0)
(setq code (logior (logand char (lognot ?\M-\^@)) 128)
done t))
((and (<= ?0 char) (< char (+ ?0 (min 10 read-quoted-char-radix))))
(setq code (+ (* code read-quoted-char-radix) (- char ?0)))
(and prompt (setq prompt (message "%s %c" prompt char))))
((and (<= ?a (downcase char))
(< (downcase char) (+ ?a -10 (min 26 read-quoted-char-radix))))
(setq code (+ (* code read-quoted-char-radix)
(+ 10 (- (downcase char) ?a))))
(and prompt (setq prompt (message "%s %c" prompt char))))
((and (not first) (eq char ?\C-m))
(setq done t))
((not first)
(setq unread-command-events (list char)
done t))
(t (setq code char
done t)))
(setq first nil))
code))
(defun read-passwd (prompt &optional confirm default)
"Read a password, prompting with PROMPT. Echo `.' for each character typed.
End with RET, LFD, or ESC. DEL or C-h rubs out. C-u kills line.
Optional argument CONFIRM, if non-nil, then read it twice to make sure.
Optional DEFAULT is a default password to use instead of empty input."
(if confirm
(let (success)
(while (not success)
(let ((first (read-passwd prompt nil default))
(second (read-passwd "Confirm password: " nil default)))
(if (equal first second)
(progn
(and (arrayp second) (fillarray second ?\0))
(setq success first))
(and (arrayp first) (fillarray first ?\0))
(and (arrayp second) (fillarray second ?\0))
(message "Password not repeated accurately; please start over")
(sit-for 1))))
success)
(let ((pass nil)
(c 0)
(echo-keystrokes 0)
(cursor-in-echo-area t))
(while (progn (message "%s%s"
prompt
(make-string (length pass) ?.))
(setq c (read-char-exclusive nil t))
(and (/= c ?\r) (/= c ?\n) (/= c ?\e)))
(clear-this-command-keys)
(if (= c ?\C-u)
(progn
(and (arrayp pass) (fillarray pass ?\0))
(setq pass ""))
(if (and (/= c ?\b) (/= c ?\177))
(let* ((new-char (char-to-string c))
(new-pass (concat pass new-char)))
(and (arrayp pass) (fillarray pass ?\0))
(fillarray new-char ?\0)
(setq c ?\0)
(setq pass new-pass))
(if (> (length pass) 0)
(let ((new-pass (substring pass 0 -1)))
(and (arrayp pass) (fillarray pass ?\0))
(setq pass new-pass))))))
(message nil)
(or pass default ""))))
(defun force-mode-line-update (&optional all)
"Force the mode-line of the current buffer to be redisplayed.
With optional non-nil ALL, force redisplay of all mode-lines."
(if all (save-excursion (set-buffer (other-buffer))))
(set-buffer-modified-p (buffer-modified-p)))
(defun momentary-string-display (string pos &optional exit-char message)
"Momentarily display STRING in the buffer at POS.
Display remains until next character is typed.
If the char is EXIT-CHAR (optional third arg, default is SPC) it is swallowed;
otherwise it is then available as input (as a command if nothing else).
Display MESSAGE (optional fourth arg) in the echo area.
If MESSAGE is nil, instructions to type EXIT-CHAR are displayed there."
(or exit-char (setq exit-char ?\ ))
(let ((inhibit-read-only t)
(buffer-undo-list t)
(modified (buffer-modified-p))
(name buffer-file-name)
insert-end)
(unwind-protect
(progn
(save-excursion
(goto-char pos)
(setq buffer-file-name nil)
(insert-before-markers string)
(setq insert-end (point))
(if (< (window-end nil t) insert-end)
(recenter (/ (window-height) 2)))
(move-to-window-line 0)
(if (> (point) pos)
(progn
(goto-char pos)
(recenter 0))))
(message (or message "Type %s to continue editing.")
(single-key-description exit-char))
(let ((char (read-event)))
(or (eq char exit-char)
(setq unread-command-events (list char)))))
(if insert-end
(save-excursion
(delete-region pos insert-end)))
(setq buffer-file-name name)
(set-buffer-modified-p modified))))
(defvar font-lock-defaults nil)
(defvar suspend-hook nil
"Normal hook run by `suspend-emacs', before suspending.")
(defvar suspend-resume-hook nil
"Normal hook run by `suspend-emacs', after Emacs is continued.")
(defvar buffer-file-type nil
"Non-nil if the visited file is a binary file.
This variable is meaningful on MS-DOG and Windows NT.
On those systems, it is automatically local in every buffer.
On other systems, this variable is normally always nil.")
(defun get-buffer-window-list (buffer &optional minibuf frame)
"Return windows currently displaying BUFFER, or nil if none.
See `walk-windows' for the meaning of MINIBUF and FRAME."
(let ((buffer (if (bufferp buffer) buffer (get-buffer buffer))) windows)
(walk-windows (function (lambda (window)
(if (eq (window-buffer window) buffer)
(setq windows (cons window windows)))))
minibuf frame)
windows))
(defun ignore (&rest ignore)
"Do nothing and return nil.
This function accepts any number of arguments, but ignores them."
(interactive)
nil)
(defun error (&rest args)
"Signal an error, making error message by passing all args to `format'.
In Emacs, the convention is that error messages start with a capital
letter but *do not* end with a period. Please follow this convention
for the sake of consistency."
(while t
(signal 'error (list (apply 'format args)))))
(defalias 'user-original-login-name 'user-login-name)
(defun start-process-shell-command (name buffer &rest args)
"Start a program in a subprocess. Return the process object for it.
Args are NAME BUFFER COMMAND &rest COMMAND-ARGS.
NAME is name for process. It is modified if necessary to make it unique.
BUFFER is the buffer or (buffer-name) to associate with the process.
Process output goes at end of that buffer, unless you specify
an output stream or filter function to handle the output.
BUFFER may be also nil, meaning that this process is not associated
with any buffer
Third arg is command name, the name of a shell command.
Remaining arguments are the arguments for the command.
Wildcards and redirection are handled as usual in the shell."
(cond
((eq system-type 'vax-vms)
(apply 'start-process name buffer args))
(t
(start-process name buffer shell-file-name shell-command-switch
(mapconcat 'identity args " ")))))
(defmacro with-current-buffer (buffer &rest body)
"Execute the forms in BODY with BUFFER as the current buffer.
The value returned is the value of the last form in BODY.
See also `with-temp-buffer'."
(cons 'save-current-buffer
(cons (list 'set-buffer buffer)
body)))
(defmacro with-temp-file (file &rest body)
"Create a new buffer, evaluate BODY there, and write the buffer to FILE.
The value returned is the value of the last form in BODY.
See also `with-temp-buffer'."
(let ((temp-file (make-symbol "temp-file"))
(temp-buffer (make-symbol "temp-buffer")))
`(let ((,temp-file ,file)
(,temp-buffer
(get-buffer-create (generate-new-buffer-name " *temp file*"))))
(unwind-protect
(prog1
(with-current-buffer ,temp-buffer
,@body)
(with-current-buffer ,temp-buffer
(widen)
(write-region (point-min) (point-max) ,temp-file nil 0)))
(and (buffer-name ,temp-buffer)
(kill-buffer ,temp-buffer))))))
(defmacro with-temp-message (message &rest body)
"Display MESSAGE temporarily if non-nil while BODY is evaluated.
The original message is restored to the echo area after BODY has finished.
The value returned is the value of the last form in BODY.
MESSAGE is written to the message log buffer if `message-log-max' is non-nil.
If MESSAGE is nil, the echo area and message log buffer are unchanged.
Use a MESSAGE of \"\" to temporarily clear the echo area."
(let ((current-message (make-symbol "current-message"))
(temp-message (make-symbol "with-temp-message")))
`(let ((,temp-message ,message)
(,current-message))
(unwind-protect
(progn
(when ,temp-message
(setq ,current-message (current-message))
(message "%s" ,temp-message))
,@body)
(and ,temp-message ,current-message
(message "%s" ,current-message))))))
(defmacro with-temp-buffer (&rest body)
"Create a temporary buffer, and evaluate BODY there like `progn'.
See also `with-temp-file' and `with-output-to-string'."
(let ((temp-buffer (make-symbol "temp-buffer")))
`(let ((,temp-buffer
(get-buffer-create (generate-new-buffer-name " *temp*"))))
(unwind-protect
(with-current-buffer ,temp-buffer
,@body)
(and (buffer-name ,temp-buffer)
(kill-buffer ,temp-buffer))))))
(defmacro with-output-to-string (&rest body)
"Execute BODY, return the text it sent to `standard-output', as a string."
`(let ((standard-output
(get-buffer-create (generate-new-buffer-name " *string-output*"))))
(let ((standard-output standard-output))
,@body)
(with-current-buffer standard-output
(prog1
(buffer-string)
(kill-buffer nil)))))
(defmacro combine-after-change-calls (&rest body)
"Execute BODY, but don't call the after-change functions till the end.
If BODY makes changes in the buffer, they are recorded
and the functions on `after-change-functions' are called several times
when BODY is finished.
The return value is the value of the last form in BODY.
If `before-change-functions' is non-nil, then calls to the after-change
functions can't be deferred, so in that case this macro has no effect.
Do not alter `after-change-functions' or `before-change-functions'
in BODY."
`(unwind-protect
(let ((combine-after-change-calls t))
. ,body)
(combine-after-change-execute)))
(defmacro with-syntax-table (table &rest body)
"Evaluate BODY with syntax table of current buffer set to a copy of TABLE.
The syntax table of the current buffer is saved, BODY is evaluated, and the
saved table is restored, even in case of an abnormal exit.
Value is what BODY returns."
(let ((old-table (make-symbol "table"))
(old-buffer (make-symbol "buffer")))
`(let ((,old-table (syntax-table))
(,old-buffer (current-buffer)))
(unwind-protect
(progn
(set-syntax-table (copy-syntax-table ,table))
,@body)
(save-current-buffer
(set-buffer ,old-buffer)
(set-syntax-table ,old-table))))))
(defvar save-match-data-internal)
(defmacro save-match-data (&rest body)
"Execute the BODY forms, restoring the global value of the match data."
(list 'let
'((save-match-data-internal (match-data)))
(list 'unwind-protect
(cons 'progn body)
'(set-match-data save-match-data-internal))))
(defun match-string (num &optional string)
"Return string of text matched by last search.
NUM specifies which parenthesized expression in the last regexp.
Value is nil if NUMth pair didn't match, or there were less than NUM pairs.
Zero means the entire text matched by the whole regexp or whole string.
STRING should be given if the last search was by `string-match' on STRING."
(if (match-beginning num)
(if string
(substring string (match-beginning num) (match-end num))
(buffer-substring (match-beginning num) (match-end num)))))
(defun match-string-no-properties (num &optional string)
"Return string of text matched by last search, without text properties.
NUM specifies which parenthesized expression in the last regexp.
Value is nil if NUMth pair didn't match, or there were less than NUM pairs.
Zero means the entire text matched by the whole regexp or whole string.
STRING should be given if the last search was by `string-match' on STRING."
(if (match-beginning num)
(if string
(let ((result
(substring string (match-beginning num) (match-end num))))
(set-text-properties 0 (length result) nil result)
result)
(buffer-substring-no-properties (match-beginning num)
(match-end num)))))
(defun split-string (string &optional separators)
"Splits STRING into substrings where there are matches for SEPARATORS.
Each match for SEPARATORS is a splitting point.
The substrings between the splitting points are made into a list
which is returned.
If SEPARATORS is absent, it defaults to \"[ \\f\\t\\n\\r\\v]+\".
If there is match for SEPARATORS at the beginning of STRING, we do not
include a null substring for that. Likewise, if there is a match
at the end of STRING, we don't include a null substring for that.
Modifies the match data; use `save-match-data' if necessary."
(let ((rexp (or separators "[ \f\t\n\r\v]+"))
(start 0)
notfirst
(list nil))
(while (and (string-match rexp string
(if (and notfirst
(= start (match-beginning 0))
(< start (length string)))
(1+ start) start))
(< (match-beginning 0) (length string)))
(setq notfirst t)
(or (eq (match-beginning 0) 0)
(and (eq (match-beginning 0) (match-end 0))
(eq (match-beginning 0) start))
(setq list
(cons (substring string start (match-beginning 0))
list)))
(setq start (match-end 0)))
(or (eq start (length string))
(setq list
(cons (substring string start)
list)))
(nreverse list)))
(defun subst-char-in-string (fromchar tochar string &optional inplace)
"Replace FROMCHAR with TOCHAR in STRING each time it occurs.
Unless optional argument INPLACE is non-nil, return a new string."
(let ((i (length string))
(newstr (if inplace string (copy-sequence string))))
(while (> i 0)
(setq i (1- i))
(if (eq (aref newstr i) fromchar)
(aset newstr i tochar)))
newstr))
(defun replace-regexp-in-string (regexp rep string &optional
fixedcase literal subexp start)
"Replace all matches for REGEXP with REP in STRING.
Return a new string containing the replacements.
Optional arguments FIXEDCASE, LITERAL and SUBEXP are like the
arguments with the same names of function `replace-match'. If START
is non-nil, start replacements at that index in STRING.
REP is either a string used as the NEWTEXT arg of `replace-match' or a
function. If it is a function it is applied to each match to generate
the replacement passed to `replace-match'; the match-data at this
point are such that match 0 is the function's argument.
To replace only the first match (if any), make REGEXP match up to \\'
and replace a sub-expression, e.g.
(replace-regexp-in-string \"\\(foo\\).*\\'\" \"bar\" \" foo foo\" nil nil 1)
=> \" bar foo\"
"
(let ((l (length string))
(start (or start 0))
matches str mb me)
(save-match-data
(while (and (< start l) (string-match regexp string start))
(setq mb (match-beginning 0)
me (match-end 0))
(when (= me mb) (setq me (min l (1+ mb))))
(string-match regexp (setq str (substring string mb me)))
(setq matches
(cons (replace-match (if (stringp rep)
rep
(funcall rep (match-string 0 str)))
fixedcase literal str subexp)
(cons (substring string start mb) matches)))
(setq start me))
(setq matches (cons (substring string start l) matches)) (apply #'concat (nreverse matches)))))
(defun shell-quote-argument (argument)
"Quote an argument for passing as argument to an inferior shell."
(if (eq system-type 'ms-dos)
(let ((result "")
(start 0)
end)
(if (or (null (string-match "[^\"]" argument))
(< (match-end 0) (length argument)))
(while (string-match "[\"]" argument start)
(setq end (match-beginning 0)
result (concat result (substring argument start end)
"\\" (substring argument end (1+ end)))
start (1+ end))))
(concat "\"" result (substring argument start) "\""))
(if (eq system-type 'windows-nt)
(concat "\"" argument "\"")
(if (equal argument "")
"''"
(let ((result "") (start 0) end)
(while (string-match "[^-0-9a-zA-Z_./]" argument start)
(setq end (match-beginning 0)
result (concat result (substring argument start end)
"\\" (substring argument end (1+ end)))
start (1+ end)))
(concat result (substring argument start)))))))
(defun make-syntax-table (&optional oldtable)
"Return a new syntax table.
If OLDTABLE is non-nil, copy OLDTABLE.
Otherwise, create a syntax table which inherits
all letters and control characters from the standard syntax table;
other characters are copied from the standard syntax table."
(if oldtable
(copy-syntax-table oldtable)
(let ((table (copy-syntax-table))
i)
(setq i 0)
(while (<= i 31)
(aset table i nil)
(setq i (1+ i)))
(setq i ?A)
(while (<= i ?Z)
(aset table i nil)
(setq i (1+ i)))
(setq i ?a)
(while (<= i ?z)
(aset table i nil)
(setq i (1+ i)))
(setq i 128)
(while (<= i 255)
(aset table i nil)
(setq i (1+ i)))
table)))
(defun add-to-invisibility-spec (arg)
"Add elements to `buffer-invisibility-spec'.
See documentation for `buffer-invisibility-spec' for the kind of elements
that can be added."
(cond
((or (null buffer-invisibility-spec) (eq buffer-invisibility-spec t))
(setq buffer-invisibility-spec (list arg)))
(t
(setq buffer-invisibility-spec
(cons arg buffer-invisibility-spec)))))
(defun remove-from-invisibility-spec (arg)
"Remove elements from `buffer-invisibility-spec'."
(if (consp buffer-invisibility-spec)
(setq buffer-invisibility-spec (delete arg buffer-invisibility-spec))))
(defun global-set-key (key command)
"Give KEY a global binding as COMMAND.
COMMAND is the command definition to use; usually it is
a symbol naming an interactively-callable function.
KEY is a key sequence; noninteractively, it is a string or vector
of characters or event types, and non-ASCII characters with codes
above 127 (such as ISO Latin-1) can be included if you use a vector.
Note that if KEY has a local binding in the current buffer,
that local binding will continue to shadow any global binding
that you make with this function."
(interactive "KSet key globally: \nCSet key %s to command: ")
(or (vectorp key) (stringp key)
(signal 'wrong-type-argument (list 'arrayp key)))
(define-key (current-global-map) key command))
(defun local-set-key (key command)
"Give KEY a local binding as COMMAND.
COMMAND is the command definition to use; usually it is
a symbol naming an interactively-callable function.
KEY is a key sequence; noninteractively, it is a string or vector
of characters or event types, and non-ASCII characters with codes
above 127 (such as ISO Latin-1) can be included if you use a vector.
The binding goes in the current buffer's local map,
which in most cases is shared with all other buffers in the same major mode."
(interactive "KSet key locally: \nCSet key %s locally to command: ")
(let ((map (current-local-map)))
(or map
(use-local-map (setq map (make-sparse-keymap))))
(or (vectorp key) (stringp key)
(signal 'wrong-type-argument (list 'arrayp key)))
(define-key map key command)))
(defun global-unset-key (key)
"Remove global binding of KEY.
KEY is a string representing a sequence of keystrokes."
(interactive "kUnset key globally: ")
(global-set-key key nil))
(defun local-unset-key (key)
"Remove local binding of KEY.
KEY is a string representing a sequence of keystrokes."
(interactive "kUnset key locally: ")
(if (current-local-map)
(local-set-key key nil))
nil)
(defun frame-configuration-p (object)
"Return non-nil if OBJECT seems to be a frame configuration.
Any list whose car is `frame-configuration' is assumed to be a frame
configuration."
(and (consp object)
(eq (car object) 'frame-configuration)))
(defun functionp (object)
"Non-nil if OBJECT is a type of object that can be called as a function."
(or (subrp object) (byte-code-function-p object)
(eq (car-safe object) 'lambda)
(and (symbolp object) (fboundp object))))
(defun interactive-form (function)
"Return the interactive form of FUNCTION.
If function is a command (see `commandp'), value is a list of the form
\(interactive SPEC). If function is not a command, return nil."
(setq function (indirect-function function))
(when (commandp function)
(cond ((byte-code-function-p function)
(when (> (length function) 5)
(let ((spec (aref function 5)))
(if spec
(list 'interactive spec)
(list 'interactive)))))
((subrp function)
(subr-interactive-form function))
((eq (car-safe function) 'lambda)
(setq function (cddr function))
(when (stringp (car function))
(setq function (cdr function)))
(let ((form (car function)))
(when (eq (car-safe form) 'interactive)
(copy-sequence form)))))))
(defun assq-delete-all (key alist)
"Delete from ALIST all elements whose car is KEY.
Return the modified alist."
(let ((tail alist))
(while tail
(if (eq (car (car tail)) key)
(setq alist (delq (car tail) alist)))
(setq tail (cdr tail)))
alist))
(defun make-temp-file (prefix &optional dir-flag)
"Create a temporary file.
The returned file name (created by appending some random characters at the end
of PREFIX, and expanding against `temporary-file-directory' if necessary,
is guaranteed to point to a newly created empty file.
You can then use `write-region' to write new data into the file.
If DIR-FLAG is non-nil, create a new empty directory instead of a file."
(let (file)
(while (condition-case ()
(progn
(setq file
(make-temp-name
(expand-file-name prefix temporary-file-directory)))
(if dir-flag
(make-directory file)
(write-region "" nil file nil 'silent nil 'excl))
nil)
(file-already-exists t))
nil)
file))
(defun add-minor-mode (toggle name &optional keymap after toggle-fun)
"Register a new minor mode.
This is an XEmacs-compatibility function. Use `define-minor-mode' instead.
TOGGLE is a symbol which is the name of a buffer-local variable that
is toggled on or off to say whether the minor mode is active or not.
NAME specifies what will appear in the mode line when the minor mode
is active. NAME should be either a string starting with a space, or a
symbol whose value is such a string.
Optional KEYMAP is the keymap for the minor mode that will be added
to `minor-mode-map-alist'.
Optional AFTER specifies that TOGGLE should be added after AFTER
in `minor-mode-alist'.
Optional TOGGLE-FUN is an interactive function to toggle the mode.
It defaults to (and should by convention be) TOGGLE.
If TOGGLE has a non-nil `:included' property, an entry for the mode is
included in the mode-line minor mode menu.
If TOGGLE has a `:menu-tag', that is used for the menu item's label."
(unless toggle-fun (setq toggle-fun toggle))
(when (get toggle :included)
(define-key mode-line-mode-menu
(vector toggle)
(list 'menu-item
(or (get toggle :menu-tag)
(if (stringp name) name (symbol-name toggle)))
toggle-fun
:button (cons :toggle toggle))))
(when name
(let ((existing (assq toggle minor-mode-alist)))
(when (and (stringp name) (not (get-text-property 0 'local-map name)))
(setq name
(propertize name
'local-map mode-line-minor-mode-keymap
'help-echo "mouse-3: minor mode menu")))
(if existing
(setcdr existing (list name))
(let ((tail minor-mode-alist) found)
(while (and tail (not found))
(if (eq after (caar tail))
(setq found tail)
(setq tail (cdr tail))))
(if found
(let ((rest (cdr found)))
(setcdr found nil)
(nconc found (list (list toggle name)) rest))
(setq minor-mode-alist (cons (list toggle name)
minor-mode-alist)))))))
(when keymap
(let ((existing (assq toggle minor-mode-map-alist)))
(if existing
(setcdr existing keymap)
(let ((tail minor-mode-map-alist) found)
(while (and tail (not found))
(if (eq after (caar tail))
(setq found tail)
(setq tail (cdr tail))))
(if found
(let ((rest (cdr found)))
(setcdr found nil)
(nconc found (list (cons toggle keymap)) rest))
(setq minor-mode-map-alist (cons (cons toggle keymap)
minor-mode-map-alist))))))))
(if (fboundp 'play-sound)
(defun play-sound-file (file &optional volume device)
"Play sound stored in FILE.
VOLUME and DEVICE correspond to the keywords of the sound
specification for `play-sound'."
(interactive "fPlay sound file: ")
(let ((sound (list :file file)))
(if volume
(plist-put sound :volume volume))
(if device
(plist-put sound :device device))
(push 'sound sound)
(play-sound sound))))