sort_get_panes_window
l = sort_get_panes_window(wl->window, &n, &sort_crit);
l = sort_get_panes_window(ft->w, &n, sc);
struct window_pane **sort_get_panes_window(struct window *, u_int *,
l = sort_get_panes_window(wl->window, &n, sort_crit);