+(defun nnheader-directory-files (&rest args)
+ "Same as `directory-files', but prune \".\" and \"..\"."
+ (let ((files (apply 'directory-files args))
+ out)
+ (while files
+ (unless (member (file-name-nondirectory (car files)) '("." ".."))
+ (push (car files) out))
+ (pop files))
+ (nreverse out)))
+
+(defmacro nnheader-skeleton-replace (from &optional to regexp)
+ `(let ((new (generate-new-buffer " *nnheader replace*"))
+ (cur (current-buffer))
+ (start (point-min)))
+ (set-buffer new)
+ (buffer-disable-undo (current-buffer))
+ (set-buffer cur)
+ (goto-char (point-min))
+ (while (,(if regexp 're-search-forward 'search-forward)
+ ,from nil t)
+ (insert-buffer-substring
+ cur start (prog1 (match-beginning 0) (set-buffer new)))
+ (goto-char (point-max))
+ ,(when to `(insert ,to))
+ (set-buffer cur)
+ (setq start (point)))
+ (insert-buffer-substring
+ cur start (prog1 (point-max) (set-buffer new)))
+ (copy-to-buffer cur (point-min) (point-max))
+ (kill-buffer (current-buffer))
+ (set-buffer cur)))
+
+(defun nnheader-replace-string (from to)
+ "Do a fast replacement of FROM to TO from point to point-max."
+ (nnheader-skeleton-replace from to))
+
+(defun nnheader-replace-regexp (from to)
+ "Do a fast regexp replacement of FROM to TO from point to point-max."
+ (nnheader-skeleton-replace from to t))
+
+(defun nnheader-strip-cr ()
+ "Strip all \r's from the current buffer."
+ (nnheader-skeleton-replace "\r"))
+