+ accepted	logaudit
j but junked	logaudit
i ihave		logaudit
s sendme	logaudit
- rejected	logaudit/transient error
c control msg	logaudit
a commentary	logaudit

b bad input	transient error, logaudit
---
f fatal		persistent error
m malloc failed	persistent error
s sys file bad	persistent error
i impossible	canthappen error

\0		don't print anything, just set status or exit

# pay attention to: status bits, severity vs code, catalog codes,
#    errno valid (esp. for persistent)?