xo_emit_hv(3) on FreeBSD
The text b5fa756ad97b, as FreeBSD 13.5-RELEASE, FreeBSD 13.4-RELEASE, FreeBSD 13.3-RELEASE, FreeBSD 13.2-RELEASE, FreeBSD 13.1-RELEASE, FreeBSD 13.0-RELEASE shipped it.
emit formatted output based on format string and arguments