Opening a new *shell* buffer takes over any window other than the one I type the command into.
What variable changes this behavior? I have a guess the choices will be the same as these:
Hide Erc Join Buffer: Value Menu Bury in new buffer State : CHANGED outside Customize. Determines how to display a newly created IRC buffer. Hide The available choices are: ‘window’ - in another window, ‘window-noselect’ - in another window, but don’t select that one, ‘frame’ - in another frame, ‘bury’ - bury it in a new buffer, ‘buffer’ - in place of the current buffer, any other value - in place of the current buffer. Groups: Erc Buffers
That variable is