[jira] [Commented] (LOG4J2-2196) Pattern layout %notEmpty does not work for exceptions

["Gary Gregory (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/LOG4J2-2196?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16331148#comment-16331148 ] 

Gary Gregory commented on LOG4J2-2196:
--------------------------------------

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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