bug#37514: PATCH: Add setting to allow switching to an already-visible buffer by default

[martin rudalics]

> 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.

Wouldn't 'quit-window' accomplish that without any prompting?  Or
'switch-to-prev-buffer'?

Thanks, martin