A not-uncommon workflow of mine is to have more than one window looking at the same buffer in several different places. Often in one of these windows I switch to some other buffer (perhaps a shell) and then want to switch directly back to the same place I was just looking at in main buffer. However since my main buffer is already visible in another window, C-x b (switch-to-buffer) does not default to that buffer, but prefers a buffer that is not already visible. This customization setting allows users to override that behavior so that switch-to-buffer does not prefer buffers that are not already visible.
Jefferson
0001-Add-setting-to-allow-switching-to-an-already-visible.patch