Lua-based window matching utility

 Devilspie2 is a window matching utility, allowing the user to perform
 scripted actions on windows as they are created. For example, you can
 script a terminal program to always be positioned at a specific screen
 position, or automatically position a window on a specific workspace.
 .
 It is a continuation of Ross Burton's project Devilspie, with the most
 significant change that the symbolic expressions of that project are
 replaced with a Lua interpreter.