DescribeMojo.lookupPluginDescriptor() error message references null mojo fields

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Assessment

Difficulty
2/5
Estimated time
1-3 hours
Newbie friendliness
84/100
Issue type
Bug
Clarity
Clearly specified
Activity status
Quiet
Tech stack
java
Domain
build-system

Research direction

Start in src/main/java/org/apache/maven/plugins/help/DescribeMojo.java:333-338 and trace the PluginInfo parameter used by lookupPluginDescriptor(). Reproduce the prefix form with -Dplugin=help, then verify the error output reports the actual plugin coordinates rather than null mojo fields.

Written by the indexing model from the issue text.

Description

bug

In src/main/java/org/apache/maven/plugins/help/DescribeMojo.java:333-338:

throw new MojoExecutionException(
"Error retrieving plugin descriptor for:" + LS + LS + "groupId: \x27" + groupId + "\x27" + LS
+ "artifactId: \x27" + artifactId + "\x27" + LS + "version: \x27" + version + "\x27" + LS + LS, e);

When the plugin was specified by prefix (e.g., -Dplugin=help), the mojo fields groupId, artifactId, version are all null. The method parameter PluginInfo pi contains the actual values but the error message ignores them. Output shows groupId: \x27null\x27 etc. — misleading and unhelpful for debugging.

Dominant language
Java
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Forks
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Avg merge
23h 15m
Merged PRs (30d)
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