Get the status of terminal {buf}. This returns a String with a comma-separated list of these items: running job is running finished job has finished normal in Terminal-Normal mode One of "running" or "finished" is always present. {buf} must be the buffer number of a terminal window. If the buffer does not exist or is not a terminal window, an empty string is returned. Can also be used as a |method|: GetBufnr()->term_getstatus()