Re: cursor doesn't show through transparent images in emacs 22, unlike emacs 21

[Richard Stallman]

    > How could it possibly not be a problem?  Is it that nobody uses
    > non-transparent images?  Nobody cares about seeing the cursor in buffers
    > that use non-transparent images?

    I guess this is not a problem because usually a border is visible around
    non-transparent images with the cursor.

How does the border change the outcome?  Does the cursor appear in the
border?

Why is there usually a border?  Is it because Lisp programs that
display a non-transparent image usually request a border?  Is there
something about these images that causes Emacs to add a border?

In what circumstances would there not be a border?

      But this should be
    vice versa: the box cursor should be displayed as a box cursor that fills
    transparent areas and has the 1-pixel border,

I do not understand.  What does it mean to say a cursor "has the
1-pixel border"?  Which border is that, and why does the cursor
have it?