-;;; Bob Weiner, Altrasoft, 02/12/1998
-;;; Added the 3rd arg in `count-lines' to conditionalize the counting of
-;;; collapsed lines.
+;; new in XEmacs 21.2 (not in FSF).
+(defun line-number (&optional pos respect-narrowing)
+ "Return the line number of POS (defaults to point).
+If RESPECT-NARROWING is non-nil, then the narrowed line number is returned;
+otherwise, the absolute line number is returned. The returned line can always
+be given to `goto-line' to get back to the current line."
+ (if (and pos (/= pos (point)))
+ (save-excursion
+ (goto-char pos)
+ (line-number nil respect-narrowing))
+ (1+ (count-lines (if respect-narrowing (point-min) 1) (point-at-bol)))))
+