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https://issues.apache.org/jira/browse/LUCENE-8132?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16334016#comment-16334016
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Holger Bruch commented on LUCENE-8132:
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Ok, seems hard to get right for all cases. I wonder, if the current
implementation could work at query time for anyone.
However, I‘m working on a fix for HyphenationDecompounderTokenFilter that
handles offset, posInc and posLength, though not in case a synonym filter is
applied before.
> HyphenationDecompoundTokenFilter does not set position/offset attributes
> correctly
> ----------------------------------------------------------------------------------
>
> Key: LUCENE-8132
> URL: https://issues.apache.org/jira/browse/LUCENE-8132
> Project: Lucene - Core
> Issue Type: Bug
> Components: modules/analysis
> Affects Versions: 6.6.1, 7.2.1
> Reporter: Holger Bruch
> Priority: Major
>
> HyphenationDecompoundTokenFilter and DictionaryDecompoundTokenFilter set
> positionIncrement to 0 for all subwords, reuse start/endoffset of the
> original token and ignore positionLength completly.
> In consequence, the QueryBuilder generates a SynonymQuery comprising all
> subwords, which should rather treated as individual terms.
>
>
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