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https://issues.apache.org/jira/browse/MNG-7222?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17653179#comment-17653179
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Michael Osipov commented on MNG-7222:
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I have been working in some properties related improvement recently. Which
dominant/recessive sources should be evaluted to override properties?
* Model properties overwrite system properties?
* User properties overwriting system properties?
I think enumeration of combos is complete.
> Validate and warn for naming collisions between Maven and System properties
> ---------------------------------------------------------------------------
>
> Key: MNG-7222
> URL: https://issues.apache.org/jira/browse/MNG-7222
> Project: Maven
> Issue Type: Improvement
> Components: Core
> Reporter: Konrad Windszus
> Priority: Major
>
> As properties referenced via {{${x}}} are first being resolved against system
> properties and only afterwards against Maven properties according to
> https://maven.apache.org/pom.html#properties. As this is often not noticed
> such collisions should be detected by Maven and lead to a WARN.
> An example for such a collision can be seen at
> https://github.com/adobe/aem-core-wcm-components/blob/6a294b0483c711a0283474f962a4643234e47c6e/parent/pom.xml#L64
> which is never effective as this is always overridden by
> https://docs.oracle.com/javase/tutorial/essential/environment/sysprop.html
> At least the mandatory properties (available on all JREs) outlined at
> https://docs.oracle.com/javase/8/docs/api/java/lang/System.html#getProperties--
> should always lead to a WARN.
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