Issue Type: Bug Bug
Affects Versions: 1.0.13
Assignee: Logback dev list
Components: logback-core
Created: 24/Aug/13 5:17 AM
Description:

I am configuring logback programmatically with a FixedWindowRollingPolicy. I am trying to set the fileNamePattern with something like

FixedWindowRollingPolicy rolling = new FixedWindowRollingPolicy();
			rolling.setParent(appender);
			rolling.setMaxIndex(1);
			rolling.setMaxIndex(5);
			rolling.setFileNamePattern(file + ".%i.zip");
			rolling.start();

but I always get the following exception

Exception in thread "main" java.lang.ExceptionInInitializerError
	at org.cinchapi.concourse.server.ConcourseServer.<clinit>(ConcourseServer.java:162)
Caused by: java.lang.IllegalStateException: FileNamePattern [log/performance.log.%1zip] does not contain a valid IntegerToken
	at ch.qos.logback.core.rolling.FixedWindowRollingPolicy.start(FixedWindowRollingPolicy.java:93)
	at org.cinchapi.concourse.server.util.Loggers.getLogger(Loggers.java:90)
	at org.cinchapi.concourse.server.util.Loggers.<clinit>(Loggers.java:120)
	... 1 more

The same behaviour happens even if I give it an explicit string (without a variable filename). It seems that the '%i' is not being parsed correctly...
Project: logback
Priority: Blocker Blocker
Reporter: Jeff Nelson
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