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https://issues.apache.org/jira/browse/MJAVADOC-794?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17848828#comment-17848828
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Michael Osipov commented on MJAVADOC-794:
-----------------------------------------
Patch and IT welcome!
> Taglet autodetection fails when taglets JAR includes a module-info.class
> ------------------------------------------------------------------------
>
> Key: MJAVADOC-794
> URL: https://issues.apache.org/jira/browse/MJAVADOC-794
> Project: Maven Javadoc Plugin
> Issue Type: Bug
> Affects Versions: 3.6.3
> Reporter: Curtis Rueden
> Priority: Major
>
> Due to a bug in the maven-javadoc-plugin, the following warning gets emitted
> when a JPMS-modularized artifact containing taglets is included in the
> javadoc build via a `<tagletArtifact>` tag:
> {{ [WARNING] Unable to auto-detect Taglet class names from}}
> {{ '/path/to/jar.jar'. Try to specify them with <taglets/>.}}
> Running with {{mvn -X}} shows the underlying cause:
> {{ NoClassDefFoundError: module-info is not a}}
> {{ class because access_flag ACC_MODULE is set}}
> Removing the {{module-info.java}} from the component avoids the problem.
> The following patch fixes the problem as of {{{}ded56a90{}}}:
> {{diff --git
> a/src/main/java/org/apache/maven/plugins/javadoc/JavadocUtil.java
> b/src/main/java/org/apache/maven/plugins/ja>}}
> {{index 835d6332..6e29eadf 100644}}
> {{--- a/src/main/java/org/apache/maven/plugins/javadoc/JavadocUtil.java}}
> {{+++ b/src/main/java/org/apache/maven/plugins/javadoc/JavadocUtil.java}}
> {{@@ -904,6 +904,9 @@ public class JavadocUtil {}}
> {{ for (JarEntry jarEntry = jarStream.getNextJarEntry();}}
> {{ jarEntry != null;}}
> {{ jarEntry = jarStream.getNextJarEntry()) {}}
> {{+ if ("module-info.class".equals(jarEntry.getName())) {}}
> {{+ continue;}}
> {{+ }}}
> {{ Matcher matcher = pattern.matcher(jarEntry.getName());}}
> {{ if (matcher.matches()) {}}
> {{ String version = matcher.group("v");}}
>
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