log4j-core/src/test/resources/log4j-loggerprops.xml

<?xml version="1.0" encoding="UTF-8"?>
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<Configuration status="OFF" strict="false" name="DSI">
  <Properties>
     <Property name="test2">test2default</Property>
     <Property name="attribKey" value="attribValue" />
     <Property name="duplicateKey" value="attribValue">nodeValue</Property>
     <Property name="test5">${sys:test:-${sys:test2}}</Property>
  </Properties>
  <Appenders>
    <List name="List">
        <PatternLayout pattern="[%-5level] %c{1.} user=%X{user} phrasex=%X{phrasex} test=%X{test} test2=$${sys:test2} test3=$${sys:test3:-Unknown} test4=$${sys:test3:-${sys:test}} test5=${test5} attribKey=$${attribKey} duplicateKey=$${duplicateKey}%msg%n" />
    </List>
  </Appenders>

  <Loggers>
    <Logger name="org.apache.logging.log4j.core" level="debug" additivity="false">
      <Property name="user">$${sys:user.name}</Property>
      <Property name="phrasex">${sys:user.phrasex:-****}</Property>
      <Property name="test">${sys:test}</Property>
      <AppenderRef ref="List"/>
    </Logger>
    <Root level="debug">
      <Property name="user">${sys:user.name}</Property>
      <Property name="phrasex">${sys:user.phrasex:-****}</Property>
      <Property name="test">${sys:test}</Property>
      <AppenderRef ref="List" />
    </Root>
  </Loggers>
</Configuration>