ggkochanski commented on PR #132:
URL:
https://github.com/apache/maven-help-plugin/pull/132#issuecomment-3486430884
It appears that property expression
@Parameter(property = "expression")
private String expression;
is already resolved when it goes to `EvaluateMojo.execute()`
e.g. executing
-Dexpression='project_version=${project.version}'
causes that the value of injected parameter expression is already resolved:
`project_version=3.5.2-SNAPSHOT`
and overlapping it with ${} does not do any good 😢
It overlaps already resolved expression with '${}' and tries to handle
expression ${project_version=3.5.2-SNAPSHOT}, which fails with message
null object or invalid expression
However, the workaround exists :stuck_out_tongue:
passing property through additional parameter does the job, e.g.
`-Dexpression='project_version=$${ver_property}'
-Dver_property='{project.version}'`
outputs desired value:
`project_version=3.5.2-SNAPSHOT`
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