For example:

emacs -Q --eval "(progn (toggle-truncate-lines 1) \
(split-window-right) \
(other-window 1) \
(split-window-below) \
(insert
\"blahblahblahblahblahblahblahblahblahblahblahblahblahblahblahblahblahblahblahblahblahblahblahblahblahblahblahblahblahblah\"))"

Then try to windmove-down, it moves left! :/

window-in-direction seems to be doing fine anyway!

Sylvain.