Summarized: Define a custom shortcut for Compiz Window Manager

[Ralf Mardorf]

Summarized
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Get the active window:

$ window="$(printf '%x' $(xdotool getactivewindow))"

Get the size of the active window:

$ win_w=$(wmctrl -l -G | grep $window | cut -d" " -f11)
$ win_h=$(wmctrl -l -G | grep $window | cut -d" " -f12)

Do the wanted math for $win_w and $win_h to get $w and $h.

Ensure that the window isn't maximised:

wmctrl -i -r 0x$window -b remove,maximized_vert,maximized_horz

Resize the Window:

$ wmctrl -i -r 0x$window -e 0,-1,-1,$w,$h

In short, even the grep vs wmctrl x0???????? issue is solved, only the
math is missing. Ok, assumed a window title should have the same name
as another window's ID, there still is a grep issue ;).