Comment 19 for bug 1707898

@Gunnar: This patch does not actually work:

❱❱❱ xgettext -f "po/POTFILES.in" -o "build-deb/po/systemd.pot" --join-existing
xgettext: warning: file 'src/core/org.freedesktop.systemd1.policy.in.in' extension 'policy' is unknown; will try C
xgettext: warning: file 'src/hostname/org.freedesktop.hostname1.policy.in' extension 'policy' is unknown; will try C
xgettext: warning: file 'src/import/org.freedesktop.import1.policy.in' extension 'policy' is unknown; will try C
xgettext: warning: file 'src/locale/org.freedesktop.locale1.policy.in' extension 'policy' is unknown; will try C
xgettext: warning: file 'src/login/org.freedesktop.login1.policy.in' extension 'policy' is unknown; will try C
xgettext: warning: file 'src/machine/org.freedesktop.machine1.policy.in' extension 'policy' is unknown; will try C
xgettext: warning: file 'src/timedate/org.freedesktop.timedate1.policy.in' extension 'policy' is unknown; will try C

And systemd.pot is unchanged.

I now committed https://salsa.debian.org/systemd-team/systemd/commit/09c6423728319 to simplify the .pot generation, but it has the exact same issue.