I want to pass an exception into a parameterized log call and have it not log the stacktrace.
According to the FAQ "If the exception is not the last argument, it will be treated as a plain object and its stack trace will NOT be printed." which is exactly what I want. 

But when I try
LOG.info("foo {} bar {}", "xxx", new RuntimeException("ZZZ"));

I get
2018-01-02 15:52:40.637 INFO [main] com.foo.Bar foo xxx bar {}
java.lang.RuntimeException: ZZZ
    at com.foo.Bar.<init>(Bar.java:37)
    ...

so it does not substitute that last parameter and it creates an unwanted stacktrace.

I can work around this by manually calling toString() but this

• defeats the efficiencies of using a parameterized call
• probably makes my static analysis tool warn that the exception has not been logged

edit: I realized my parameter is the last argument, so maybe this behavior doesn't really contradict the FAQ. But the FAQ example shows 2 arguments being passed into a format string with one place holder, and my case has 2 arguments being passed into a format string with 2 place holders, so there is no extra argument. It really seems like this case should not log a stack trace. It should be possible to log without a stack trace; there are many cases where you know the stack trace will not be helpful and there is no reason to fill up the logs with stack traces.