L.LayoutHints, add layoutHintsToCentre
L.LayoutHints, add layoutHintsToCentre

Ignore-this: a49106d5abb683d805e59beb29c727a9

layoutHintsToCentre attempts to apply hints in a way that eliminates gaps
between windows. The excess space ends up on all edges.

darcs-hash:20090519013806-1499c-77afe39135f74122a8d4c70f6329d458e904a3ad

kmels/xmonad-launcher,kmels/xmonad-launcher