Note: help and version output are generated by a naïve script which tries a few variants of
<command> --help, <command> -h etc. to find the command's help and version info.
Sometimes it gets lucky, sometimes it doesn't; if the output below looks wrong, it probably is.
xdg-user-dirs-update -V (return code: 1)
Invalid argument --version
xdg-user-dirs-update --help (return code: 0)
Usage: xdg-user-dirs-update [--force] [--dummy-output <path>] [--set DIR path]