Fixes: https://github.com/systemd/systemd/issues/8773
shell style. All strings should be in UTF-8 format, and
non-printable characters should not be used. It is not supported
to concatenate multiple individually quoted strings. Lines
- beginning with "#" shall be ignored as comments.</para>
+ beginning with "#" shall be ignored as comments. Blank lines are
+ permitted and ignored.</para>
<para>The file <filename>/etc/os-release</filename> takes
precedence over <filename>/usr/lib/os-release</filename>.