windmove and the minibuffer: PATCH

[Jesse Byler]

The windmove package has for some time been unable to access the
minibuffer; see previous report at 
http://lists.gnu.org/archive/html/emacs-devel/2003-05/msg00704.html

I traced this bug to a small logic error in windmove-other-window-loc. 
This function uses window-edges to find the corners of a window. 
According to the documentation for window-edges, however, the right and
bottom coordinates it returns are actually "one more than the rightmost
column occupied by window" and "one more than the bottommost row
occupied by window", and windmove-other-window-loc does not take this
into account.  The resulting off-by-one error is not noticeable in most
cases because most windows are wider and taller than one character
coordinate, so windmove-other-window-loc still returns a coordinate in
the desired window.  In the case of the minibuffer, however, the off by
one error can overshoot the minibuffer entirely.

I have attached a small patch to the windmove-other-window-loc function
in CVS emacs which fixes the problem.  If there are copyright issues /
etc. that prevent the emacs team from checking in my patch, someone else
can implement the same fix quite easily: just change the function to
compute x1-1 in place of x1 and y1-1 in place of y1.

Thanks,
Jesse
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