gnodet commented on PR #812:
URL: https://github.com/apache/maven/pull/812#issuecomment-1731994316
> > What am I doing wrong?
>
> The PR only tackles plugin configuration injection, not model
interpolation. I'll see if/how that can be done...
Actually, this is not the problem. The problem is that the
maven-help-plugin is using the `PluginParameterExpressionEvaluator` and not the
`PluginParameterExpressionEvaluatorV4`. However, after also enhancing the
`PluginParameterExpressionEvaluator` class, the next problem is that
`${session.multiModuleProjectDirectory}` only works on the v4 api, as the
`MavenSession` does not have the `multiModuleProjectDirectory`, which is
deprecated.
After fixing everything that, I do have
```
[INFO] Enter the Maven expression i.e. ${project.groupId} or 0 to exit?:
${session.rootDirectory.uri}
[INFO]
<uri>file:///Users/gnodet/work/git/maven/</uri>
```
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