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https://issues.apache.org/jira/browse/LUCENE-8132?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16333962#comment-16333962
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Adrien Grand commented on LUCENE-8132:
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I agree this sounds wrong. Unfortunately, inserting positions in a token filter
is hard to do right if the analysis chain has a preceding token filter that
sets synonyms, as you need to fix positions on all paths. This issue touches
this problem a bit: LUCENE-5012.
> 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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