[jira] [Commented] (MPH-205) Handling empty elements

["Michael Osipov (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/MPH-205?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17708736#comment-17708736 ] 

Michael Osipov commented on MPH-205:
------------------------------------

[~gnodet],  [~cstamas]!

> Handling empty elements
> -----------------------
>
>                 Key: MPH-205
>                 URL: https://issues.apache.org/jira/browse/MPH-205
>             Project: Maven Help Plugin
>          Issue Type: Bug
>          Components: effective-settings
>    Affects Versions: 3.4.0
>            Reporter: Delany
>            Priority: Major
>
> When i needed a settings.xml file in the past I would copy the code from
> [https://maven.apache.org/settings.html]
> [https://maven.apache.org/ref/4.0.0-alpha-5/maven-settings/settings.html]
>  
> and replace the self-closing tag of whichever section I needed - typically servers, mirrors and profiles. The other tags would remain, like "<localRepository/>"
>  
> With Maven 3.9.0 the empty/self-closing tag was ignored.
>  
> In Maven 4.0.0-alpha-1 the value is removed/replaced, resulting in the local repository directory set to ${pwd}.
> This is the case for settings.xml (what about toolchains.xml?) but not pom.xml
>  
> With Maven 4.0.0-alpha-5, and I guess https://issues.apache.org/jira/browse/MNG-7678
> the behaviour has changed back to that of Maven 3 - an empty tag is simply ignored, it doesn't override.
> But while the build is successful, mvn help:effective-settings now fails with
> {noformat}
> Execution default-cli of goal org.apache.maven.plugins:maven-help-plugin:3.4.0:effective-settings failed: Cannot invoke "org.codehaus.plexus.util.xml.Xpp3Dom.getDom()" because "configuration" is null{noformat}



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