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https://issues.apache.org/jira/browse/LUCENE-7727?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Uwe Schindler updated LUCENE-7727:
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Attachment: LUCENE-7727.patch
Rewrite to use flexmark.
I changed the task names to use "markdown" and let the implementation be hidden
(which is flexmark after this patch).
There is some room for improvements by not using the PegDown Adapter (this
removes many dependencies). I will look into this tomorrow. For now build works
with Java 9 and the HTML output matches.
> Replace EOL'ed pegdown by flexmark-java for Java 9 compatibility
> ----------------------------------------------------------------
>
> Key: LUCENE-7727
> URL: https://issues.apache.org/jira/browse/LUCENE-7727
> Project: Lucene - Core
> Issue Type: Improvement
> Components: general/build
> Reporter: Uwe Schindler
> Assignee: Uwe Schindler
> Labels: Java9
> Attachments: LUCENE-7727.patch
>
>
> The documentation tasks use a library called "pegdown" to convert Markdown to
> HTML. Unfortunately, the developer of pegdown EOLed it and points the users
> to a faster replacement: flexmark-java
> (https://github.com/vsch/flexmark-java).
> This would not be important for us, if pegdown would work with Java 9, but it
> is also affected by the usual "setAccessible into private Java APIs" issue
> (see my talk at FOSDEM:
> https://fosdem.org/2017/schedule/event/jigsaw_challenges/).
> The migration should not be too hard, its just a bit of Groovy Code rewriting
> and dependency changes.
> This is the pegdown problem:
> {noformat}
> Caused by: java.lang.RuntimeException: Could not determine whether class
> 'org.pegdown.Parser$$parboiled' has already been loaded
> at org.parboiled.transform.AsmUtils.findLoadedClass(AsmUtils.java:213)
> at
> org.parboiled.transform.ParserTransformer.transformParser(ParserTransformer.java:35)
> at org.parboiled.Parboiled.createParser(Parboiled.java:54)
> ... 50 more
> Caused by: java.lang.reflect.InaccessibleObjectException: Unable to make
> protected final java.lang.Class
> java.lang.ClassLoader.findLoadedClass(java.lang.String) accessible: module
> java.base does not "opens java.lang" to unnamed module @551b6736
> at
> java.base/java.lang.reflect.AccessibleObject.checkCanSetAccessible(AccessibleObject.java:335)
> at
> java.base/java.lang.reflect.AccessibleObject.checkCanSetAccessible(AccessibleObject.java:278)
> at
> java.base/java.lang.reflect.Method.checkCanSetAccessible(Method.java:196)
> at java.base/java.lang.reflect.Method.setAccessible(Method.java:190)
> at org.parboiled.transform.AsmUtils.findLoadedClass(AsmUtils.java:206)
> ... 52 more
> {noformat}
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