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Posted to issues@lucene.apache.org by "Alan Woodward (Jira)" <ji...@apache.org> on 2022/02/04 12:21:00 UTC

[jira] [Commented] (LUCENE-10402) Intervals.prefix() handles multicharacter unicode incorrectly

    [ https://issues.apache.org/jira/browse/LUCENE-10402?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17487065#comment-17487065 ] 

Alan Woodward commented on LUCENE-10402:
----------------------------------------

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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