Being a basically boring guy, I almost always have a full screen frame with two side-by-side windows for Emacs. For some functions—Magit and Elfeed are examples—I temporarily pop up a single full frame window but the previous window configuration is restored when I finish. Some of you, I know, lead less constrained lives and have more complicated window configurations.
People with these more interesting configurations sometimes want to move their windows around. When you have two side-by-side windows, that’s trivial—basically Ctrl+u Ctrl+x o is all you have to know—but if you have different sized windows stacked both vertically and horizontally, things can get more complicated.
Pranshu has a nice post that describes the problem and what he’s done to address it. The changes won’t appear until Emacs 31 but for those of you with complex window configurations they will surely be welcome.
Take a look at his post to see the sorts of transformations that are possible and the commands that implement them. To tell the truth, they make me dizzy and I’m happy to stay with my simple configuration but as always Emacs is able to adjust to everyone’s needs.