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https://issues.apache.org/jira/browse/LOG4J2-2000?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16137278#comment-16137278
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Gary Gregory commented on LOG4J2-2000:
--------------------------------------
All of the levels in
{{https://developer.opencloud.com/devportal/devportal/apis/slee/1.1/slee-1.1-javadoc/javax/slee/facilities/class-use/TraceLevel.html}}
are upper-case. Are you defining custom levels with
{{TraceLevel.fromString(String)}}?
> Highlight converter converts levels to uppercase before lookup
> --------------------------------------------------------------
>
> Key: LOG4J2-2000
> URL: https://issues.apache.org/jira/browse/LOG4J2-2000
> Project: Log4j 2
> Issue Type: Bug
> Components: Configurators
> Affects Versions: 2.8.2
> Reporter: Paul Burrowes
>
> If using custom levels that are not uppercase e.g. those in
> {{javax.slee.facilities.TraceLevel}} HighlightConverter cannot map colours to
> the levels because it converts the key to uppercase before lookup:
> {code} final String key =
> entry.getKey().toUpperCase(Locale.ENGLISH);{code}
> The toUpperCase() is unnecessary for style lookup because this already
> performs a case-insensitive match on the key.
> Possible solutions:
> * After fixing LOG4J2-1999, remove the {{toUpperCase()}} and just use the key
> as-is (breaks config that expects the {{toUpperCase()}} behaviour)
> * Use a case-insensitive match in Level.toLevel() instead of toUpperCase() or
> fall-back to case-insensitive after trying case-sensitive (affects
> performance)
> * In combination with one of the above, introduce a flag to enable or disable
> non-uppercase level configuration.
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