This is a simple tool to send multiline messages to journald. It's very much alike logger --journald or systemd-cat, but accepts multiline messages for transport.
This is useful, for example, when sending any kind of diagnostic reports to a centralized logging service.
gcc jlogger.c -o jlogger -O3 -s -Wall -Wpedantic -Wextra -lsystemd
some-program | jlogger <priority> <identifier>