display-buffer-no-window

display-buffer-no-window is a compiled Lisp function in `window.el'.

(display-buffer-no-window BUFFER ALIST)

Display BUFFER in no window.
If ALIST has a non-nil `allow-no-window' entry, then don't display
a window at all. This makes possible to override the default action
and avoid displaying the buffer. It is assumed that when the caller
specifies a non-nil `allow-no-window' then it can handle a nil value
returned from `display-buffer' in this case.