title: How can I determine what log configuration source Logback actually used?
body: <p>log4j has a property, <code>log4j.debug</code>, which will helpfully provide the user with an indication of which configuration file was actually used to configure the logging system.</p>
  
  <p>I haven't been able to find anything equivalent with the (otherwise superior) Logback logging framework. Is there any way to print (for diagnostic purposes) at runtime, which configuration file Logback used to bootstrap itself?</p>
  
  <p>[edit]
  To clarify, I'd ideally like a solution that doesn't require me to modify the configuration file itself (since a badly assembled third-party JAR, for example, may be picked up incorrectly, and prior to my logback configuration XML).</p>