At master, 98fc9b3c760b56dcd4324ecb1da6aadb3d794f39, no matter how I set --redactable-logs, the log files contain unredactable messages. If I use --logtostderr, stderr gets redactable messages.
I think this broken @ #56336; before it seems to work.

Another thing I observed, both on master and before the patch above, is that the stderr logs are redactable no matter the value of --redactable-logs={true,false}. Is that expected?