[logback-user] parameterized logging

[Christopher Piggott]

One other question:
        String user = "chris";
        log.debug("User {} is requesting system logs", user );

the log output I get is:

        User {} is requesting system logs

So, clearly, parameterized logging is not working.  I'm using logback
classic 0.9.27 with slf4j api 1.6.1 and a bunch of other stuff to
catch j.u.l and j.c.l.

It looks like parameterized logging has been there for a long time though.

It should be just that simple, shouldn't it?