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https://issues.apache.org/jira/browse/LOG4J2-2196?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16331148#comment-16331148
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Gary Gregory commented on LOG4J2-2196:
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May you please provide:
* Your configuration file
* The line of code that performs the logging
Thank you!
Gary
> Pattern layout %notEmpty does not work for exceptions
> -----------------------------------------------------
>
> Key: LOG4J2-2196
> URL: https://issues.apache.org/jira/browse/LOG4J2-2196
> Project: Log4j 2
> Issue Type: Bug
> Components: Pattern Converters
> Affects Versions: 2.10.0
> Reporter: Raman Gupta
> Priority: Major
>
> Using a pattern layout that contains something like:
> {{%notEmpty\{EXCEPTION: %throwable}}}
> kind of works. However, when the Exception is not empty, it prints the
> Exception to the appender twice: once in the proper position within the
> pattern, and then again completely separately, with a newline before the
> second output.
> Note that the second output completely ignores any formatting specifications,
> such as separator or level-based ansi coloring – it seems as if the output of
> Exception.toString() had been sent to the appender directly).
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