cmd_find_from_window
if (cmd_find_from_window(fs, wp->window, flags) != 0)
cmd_find_from_window(&fs, w, 0);
else if (cmd_find_from_window(&md->fs, w, 0) != 0)
cmd_find_from_window(&fs, w, 0);
int cmd_find_from_window(struct cmd_find_state *, struct window *,
cmd_find_from_window(&fs, w, 0);