mate-desktop/mate-window-manager — pull request #1 by benpicco (2012-01-08 07:20:20+00:00)
Title: Make the maximize button also maximize vertically/horizontally

With this patch marco's maximize button will behave like the one in compiz, if you click it with the left mouse button the window gets maximized normally, the middle mouse button maximizes it vertically and the right button maximizes is horizontally.