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https://issues.apache.org/jira/browse/LOG4J2-621?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15252368#comment-15252368
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ASF GitHub Bot commented on LOG4J2-621:
---------------------------------------
Github user garydgregory commented on the pull request:
https://github.com/apache/logging-log4j2/pull/28#issuecomment-213040517
It seems to me that overloading the current %c pattern would be more
elegant. For example, today you can do:
%c{3}
input: org.apache.commons.Foo
output: apache.commons.Foo
But you could also implement using negative numbers:
%c{-3}
input: org.apache.commons.Foo
output: Foo
Thoughts?
> Pattern To Drop First X Package Parts
> -------------------------------------
>
> Key: LOG4J2-621
> URL: https://issues.apache.org/jira/browse/LOG4J2-621
> Project: Log4j 2
> Issue Type: Wish
> Components: Layouts
> Affects Versions: 2.0-rc1
> Reporter: Lee Theobald
> Priority: Trivial
> Attachments: LOG4J2-621_01.patch
>
>
> Currently you can have a pattern that will print out the last X parts of you
> package. So if my package was {{uk.co.ltheobald.foo.bar}}, then using
> {{%logger\{2\}}} will print {{foo.bar}}. But when I have a number of
> different package levels, this becomes less useful (in my opinion).
> What I'd find more useful is the inverse where I can ditch the first X parts.
> Something like {{%logger\{-3\}}} for example. That way I'd end up with:
> {{uk.co.ltheobald.Main logging}} as {{Main}}
> {{uk.co.ltheobald.foo.MyClass}} logging as {{foo.MyClass}}
> {{uk.co.ltheobald.foo.bar.MyOtherClass}} logging as {{foo.bar.MyOtherClass}}
> Removing from the start of the logger name allows me to consistently trim off
> package names that I know are always the same. I'll see if I can produce a
> code example for this if I get time but I wanted to log it in the meanwhile.
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