pg_recvlogical re-opens the output file on SIGHUP. If the output goes to
stdout, it will close stdout on SIGHUP. That's a bug, isn't it?
Another thing I noticed is that if when the output goes to a file, the
file isn't re-opened immediately on SIGHUP. Only after receiving some
data from the server. I believe that's also not intentional.
- Heikki
