[STUMP] [patch] move-focus fix

[James Wright]

I really like the move-focus command, but I've noticed that as
currently implemented it makes some frames inaccessible on my machine.
For example, if I split my screen into four equal frames (vertical
split, and then split each of those two frames horizontally; or vice
versa), then I can't get to the bottom-right frame by using
move-focus.  "move-focus down" from the top-right frame takes me to
the bottom-left, and "move-focus right" from the bottom-left just
takes me right back to the top-right.

I've changed the implementation to use a heuristic based on the length
of the shared edge between two frames rather than on the "distance"
between them, and that seems to have fixed the problem.  I've attached
a patch for user.lisp in case anyone is interested.

     James

--
James Wright
Ask me about my vow of silence!

move-focus.patch
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