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https://issues.apache.org/jira/browse/MNG-5900?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15223017#comment-15223017
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Hervé Boutemy commented on MNG-5900:
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even documented, a new syntax is less expressive and more abstract: that was my
first bet before Robert idea, and I could not find any syntax that wouldn't
look cryptic regarding classical $\{*} variables
and for sure, when {{this}} will be implemented (in Maven 4), it will be
documented in http://maven.apache.org/ref/3-LATEST/maven-model-builder/ the
same way I did it for doxia-siterenderer integration-tools
http://maven.apache.org/doxia/doxia-sitetools-archives/doxia-sitetools-LATEST/doxia-integration-tools/index.html
> early interpolation: support ${this.*} as expression
> ----------------------------------------------------
>
> Key: MNG-5900
> URL: https://issues.apache.org/jira/browse/MNG-5900
> Project: Maven
> Issue Type: New Feature
> Components: Inheritance and Interpolation
> Reporter: Robert Scholte
> Fix For: Issues to be reviewed for 4.x
>
>
> Right now we have $\{project.\*} which always interpolates values based on
> the final project: "classical" interpolation is "late" interpolation. So it
> is not possible that parent poms can lock values, ie avoid child poms
> override. By adding $\{this} for "early" interpolation, it will be possible
> to have intermediate interpolation.
> If a pomfile depends on a parent, that parent will first resolve all
> $\{this.\*} values for itself. Once the fully inherited pom is there, all
> $\{project.\*} will be resolved.
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