[ http://jira.qos.ch/browse/LBCORE-179?page=com.atlassian.jira.plugin.system.i... ] Michael Osipov commented on LBCORE-179: --------------------------------------- Ceki, this is exactly it!
conversion word %ex length handling is off by one -------------------------------------------------
Key: LBCORE-179 URL: http://jira.qos.ch/browse/LBCORE-179 Project: logback-core Issue Type: Bug Components: Pattern Affects Versions: 0.9.26 Reporter: Michael Osipov Assignee: Ceki Gulcu
The %ex and %xEx define a stack trace length. The integer spec is somewhat faulty and misleading. First of all this is a stack trace depth imho and not length. Anyway, I was poking around with the SMTPAppender and wanted to include the sole exception message into the subject. The outcome was: 1. The docs do not define a valid interval for the integer value. You can only deduce from logic. 2. I defined %ex{short} and it included 2 lines of the stack trace. 3. I defined %ex{2} and it included 3 lines of the stack trace. 4. I defined %ex{0} and it included 1 line of the stack trace. 5. Defining any negative number omits the stack trace. But it does not make sense at all to have a negative stack trace depth. I checked also the source of the [https://github.com/ceki/logback/blob/master/logback-classic/src/main/java/ch... converter], the lines 54 and 58 cause the problem.
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