(face-id): Doc fix.

diff --git a/lisp/faces.el b/lisp/faces.el
index e448ab4f13db3303efb146755f5027195725d239..8bcf9901a817f0993c660d3e61154d5eefe338c2 100644 (file)
--- a/lisp/faces.el
+++ b/lisp/faces.el
@@ -225,7 +225,8 @@ Value is FACE."
 
 (defun face-id (face &optional frame)
   "Return the internal ID of face with name FACE.
-If optional argument FRAME is nil or omitted, use the selected frame."
+The optional argument FRAME is ignored, since the internal face ID
+of a face name is the same for all frames."
   (check-face face)
   (get face 'face))