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Posted to notifications@logging.apache.org by "Nate (Jira)" <ji...@apache.org> on 2021/01/06 15:08:00 UTC
[jira] [Created] (LOG4J2-2992) PatternParser.parse() ignores nested
Patterns when determining if a Throwable should be appended.
Nate created LOG4J2-2992:
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Summary: PatternParser.parse() ignores nested Patterns when determining if a Throwable should be appended.
Key: LOG4J2-2992
URL: https://issues.apache.org/jira/browse/LOG4J2-2992
Project: Log4j 2
Issue Type: Bug
Components: Pattern Converters
Affects Versions: 2.13.1
Reporter: Nate
Simplified example:
%replace{%ex{full}}{password}{******}
In this example, PatternParser.parse() only considers the %replace{} converter and does not find the %ex inside. In this case, if the PatternLayout doesn't declare alwaysWriteExceptions="false", it will append an ThrowablePatternConverter anyway, leading to the exception being logged a second time without replace converter processing. It would probably be better if the RegexReplacementConverter (and other converters that support nested patterns) also implements the handlesThrowable() method in a way that delegates this handling to the nested patterns.
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