If PATTERN is omitted, it defaults to \"[ \\f\\t\\n\\r\\v]+\"."
(or pattern
(setq pattern "[ \f\t\n\r\v]+"))
- ;; The FSF version of this function takes care not to cons in case
- ;; of infloop. Maybe we should synch?
- (let (parts (start 0))
- (while (string-match pattern string start)
+ (let (parts (start 0) (len (length string)))
+ (if (string-match pattern string)
+ (setq parts (cons (substring string 0 (match-beginning 0)) parts)
+ start (match-end 0)))
+ (while (and (< start len)
+ (string-match pattern string (if (> start (match-beginning 0))
+ start
+ (1+ start))))
(setq parts (cons (substring string start (match-beginning 0)) parts)
start (match-end 0)))
(nreverse (cons (substring string start) parts))))
(erase-buffer))))
(defmacro with-current-buffer (buffer &rest body)
- "Execute the forms in BODY with BUFFER as the current buffer.
+ "Temporarily make BUFFER the current buffer and execute the forms in BODY.
The value returned is the value of the last form in BODY.
See also `with-temp-buffer'."
`(save-current-buffer
(t
(error "Non-funcallable object: %s" function))))
+;; This function used to be an alias to `buffer-substring', except
+;; that FSF Emacs 20.4 added a BUFFER argument in an incompatible way.
+;; The new FSF's semantics makes more sense, but we try to support
+;; both for backward compatibility.
+(defun buffer-string (&optional buffer old-end old-buffer)
+ "Return the contents of the current buffer as a string.
+If narrowing is in effect, this function returns only the visible part
+of the buffer.
+
+If BUFFER is specified, the contents of that buffer are returned.
+
+The arguments OLD-END and OLD-BUFFER are supported for backward
+compatibility with pre-21.2 XEmacsen times when arguments to this
+function were (buffer-string &optional START END BUFFER)."
+ (if (or (null buffer)
+ (bufferp buffer)
+ (stringp buffer))
+ ;; The new way
+ (buffer-substring nil nil buffer)
+ ;; The old way
+ (buffer-substring buffer old-end old-buffer)))
+
;; This was not present before. I think Jamie had some objections
;; to this, so I'm leaving this undefined for now. --ben
(define-function 'remove-directory 'delete-directory)
(define-function 'set-match-data 'store-match-data)
(define-function 'send-string-to-terminal 'external-debugging-output)
-(define-function 'buffer-string 'buffer-substring)
;;; subr.el ends here