;; depend on backquote.el.
(list 'function (cons 'lambda cdr)))
-;;(defmacro defun-inline (name args &rest body)
-;; "Create an \"inline defun\" (actually a macro).
-;;Use just like `defun'."
-;; (nconc (list 'defmacro name '(&rest args))
-;; (if (stringp (car body))
-;; (prog1 (list (car body))
-;; (setq body (or (cdr body) body))))
-;; (list (list 'cons (list 'quote
-;; (cons 'lambda (cons args body)))
-;; 'args))))
+(defmacro when (cond &rest body)
+ "(when COND BODY...): if COND yields non-nil, do BODY, else return nil."
+ (list 'if cond (cons 'progn body)))
+(defmacro unless (cond &rest body)
+ "(unless COND BODY...): if COND yields nil, do BODY, else return nil."
+ (cons 'if (cons cond (cons nil body))))
\f
;;;; Keymap support.
"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.
-The order matters when the keymap is used as a menu.
+of the map. Note that AFTER must be an event type (like KEY), NOT a command
+\(like DEFINITION).
+
+If AFTER is t, 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."
+a string or vector of length 1.
+
+The order of bindings in a keymap matters when it is used as a menu."
+
(or (keymapp keymap)
(signal 'wrong-type-argument (list 'keymapp keymap)))
(if (> (length key) 1)
;; When we reach AFTER's binding, insert the new binding after.
;; If we reach an inherited keymap, insert just before that.
;; If we reach the end of this keymap, insert at the end.
- (if (or (eq (car-safe (car tail)) after)
+ (if (or (and (eq (car-safe (car tail)) after)
+ (not (eq after t)))
(eq (car (cdr tail)) 'keymap)
(null (cdr tail)))
(progn
(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)
;; Some programs still use this as a function.
(defun baud-rate ()
(t
(start-process name buffer shell-file-name shell-command-switch
(mapconcat 'identity args " ")))))
-
+\f
(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."
+The value returned is the value of the last form in BODY.
+See also `with-temp-buffer'."
`(save-current-buffer
(set-buffer ,buffer)
- . ,body))
+ ,@body))
+
+(defmacro with-temp-file (file &rest forms)
+ "Create a new buffer, evaluate FORMS there, and write the buffer to FILE.
+The value of the last form in FORMS is returned, like `progn'.
+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
+ ,@forms)
+ (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-buffer (&rest forms)
+ "Create a temporary buffer, and evaluate FORMS 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
+ ,@forms)
+ (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 " *string-output*")))
- (save-excursion
- (set-buffer standard-output)
- (buffer-disable-undo (current-buffer))
- (let ((inhibit-read-only t))
- (erase-buffer))
- (setq buffer-read-only nil))
+ `(let ((standard-output
+ (get-buffer-create (generate-new-buffer-name " *string-output*"))))
(let ((standard-output standard-output))
,@body)
- (save-excursion
- (set-buffer standard-output)
- (buffer-string))))
+ (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)))
+\f
(defvar save-match-data-internal)
;; We use save-match-data-internal as the local variable because
(start 0)
(list nil))
(while (string-match rexp string start)
- (or (eq start 0)
+ (or (eq (match-beginning 0) 0)
(setq list
(cons (substring string start (match-beginning 0))
list)))
(cons (substring string start)
list)))
(nreverse list)))
-
+\f
(defun shell-quote-argument (argument)
"Quote an argument for passing as argument to an inferior shell."
(if (eq system-type 'ms-dos)
(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
+ (nconc buffer-invisibility-spec (list arg))))))
+
+(defun remove-from-invisibility-spec (arg)
+ "Remove elements from `buffer-invisibility-spec'."
+ (if buffer-invisibility-spec
+ (setq buffer-invisibility-spec (delete arg buffer-invisibility-spec))))
\f
(defun global-set-key (key command)
"Give KEY a global binding as COMMAND.
; alist)
;;; subr.el ends here
-