I like to use the Compiz Grid keyboard shortcuts to put windows on the left half and right half of my screen. But I've noticed that when running programs like GVim or the terminal, which require their widths to be a multiple of the character width, if I put a window to the right half, the edge of it sticks out a tiny bit into the next workspace.
Ideally, I'd like to prevent windows from sticking across workspaces like that, but I've seen this related question and I guess it's just not possible with Unity. (I don't know if this has changed since that question was asked, or since 12.04, which is what I'm using, but if it has, let me know)
But is there any way I can modify the behavior of the grid so that I can make (preferably only for some programs) windows a little bit narrower when put on the right side of the screen?