How to swap the buffers in 2 windows emacs

Question

I am using emacs I find that sometimes I have 2 files separated into 2 windows.

For example: I open 1 file using C-x C-f file1.c RET

and I split t

Answer 1

In the Emacs 26.1 NEWS file there is the following entry:

+++
*** New command 'window-swap-states' swaps the states of two live
windows.

Which appears to offer similar functionality to crux-transpose-windows but can also do some height/width transpositions?