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https://issues.apache.org/jira/browse/LUCENE-10402?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17487065#comment-17487065
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Alan Woodward commented on LUCENE-10402:
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I opened a PR with a fix: https://github.com/apache/lucene/pull/646
> Intervals.prefix() handles multicharacter unicode incorrectly
> -------------------------------------------------------------
>
> Key: LUCENE-10402
> URL: https://issues.apache.org/jira/browse/LUCENE-10402
> Project: Lucene - Core
> Issue Type: Bug
> Reporter: Alan Woodward
> Priority: Major
>
> Intervals.prefix() takes its input and builds a CompiledAutomaton, before
> passing this on to a new MultiTermAutomatonIntervalsSource. However, while
> PrefixQuery.toAutomaton() builds a binary automaton, we don't tell
> CompiledAutomaton this and so it (incorrectly) does some unicode conversion
> on its input.
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