I have JoranConfigurator configured via stream, something like this: 

final InputStream stream = Thread.currentThread().getContextClassLoader().getResourceAsStream("logback.xml");

try {
 final JoranConfigurator configurator = new JoranConfigurator();
..
configurator.doConfigure(stream);
..
catch {
//
}
 

There are configured other includes in his logback definition, something like that:

    <include file="${logback.include.file}"/> 
 

Then, I got this WARNing (ch.qos.logback.core.joran.util.ConfigurationWatchListUtil:65)

WARN in ch.qos.logback.core.joran.util.ConfigurationWatchListUtil@2fd66ad3 - Null ConfigurationWatchList. Cannot add file:/<file....>

It is because method GenericConfigurator.doConfigure(InputStream inputStream) does not create ConfigurationWatchList in context (CoreConstants.CONFIGURATION_WATCH_LIST).

Shouldn't be possible to add included files in ConfigurationWatchList even if there is "no" main configuration file?