`image-save' doc string clarification

* lisp/image.el (image-save): Clarify what's being saved
(bug#49347).

diff --git a/lisp/image.el b/lisp/image.el
index ee152940311972672cea12a723f83d04fdf665d2..494c26a8a33821385de25db16056cc503d7cf5e1 100644 (file)
--- a/lisp/image.el
+++ b/lisp/image.el
@@ -1191,7 +1191,9 @@ rotations by only multiples of 90 degrees."
                       360)))))
 
 (defun image-save ()
-  "Save the image under point."
+  "Save the image under point.
+This writes the original image data to a file.  Rotating or
+changing the displayed image size does not affect the saved image."
   (interactive)
   (let ((image (image--get-image)))
     (with-temp-buffer