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https://issues.apache.org/jira/browse/LUCENE-8183?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17224604#comment-17224604
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Martin Demberger commented on LUCENE-8183:
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Hi Uwe,
is there any way I can fasten the merge. We have a few customer which wait for
this fix because our search very often falls into this pithole.
> HyphenationCompoundWordTokenFilter creates overlapping tokens with
> onlyLongestMatch enabled
> -------------------------------------------------------------------------------------------
>
> Key: LUCENE-8183
> URL: https://issues.apache.org/jira/browse/LUCENE-8183
> Project: Lucene - Core
> Issue Type: Bug
> Components: modules/analysis
> Affects Versions: 6.6
> Environment: Configuration of the analyzer:
> <tokenizer class="solr.WhitespaceTokenizerFactory"/>
> <filter class="solr.LowerCaseFilterFactory"/>
> <filter class="solr.HyphenationCompoundWordTokenFilterFactory"
> hyphenator="lang/hyph_de_DR.xml" encoding="iso-8859-1"
> dictionary="lang/wordlist_de.txt"
> onlyLongestMatch="true"/>
>
> Reporter: Rupert Westenthaler
> Assignee: Uwe Schindler
> Priority: Major
> Attachments: LUCENE-8183_20180223_rwesten.diff,
> LUCENE-8183_20180227_rwesten.diff, lucene-8183.zip
>
>
> The HyphenationCompoundWordTokenFilter creates overlapping tokens even if
> onlyLongestMatch is enabled.
> Example:
> Dictionary: {{gesellschaft}}, {{schaft}}
> Hyphenator: {{de_DR.xml}} //from Apche Offo
> onlyLongestMatch: true
>
> |text|gesellschaft|gesellschaft|schaft|
> |raw_bytes|[67 65 73 65 6c 6c 73 63 68 61 66 74]|[67 65 73 65 6c 6c 73 63 68
> 61 66 74]|[73 63 68 61 66 74]|
> |start|0|0|0|
> |end|12|12|12|
> |positionLength|1|1|1|
> |type|word|word|word|
> |position|1|1|1|
> IMHO this includes 2 unexpected Tokens
> # the 2nd 'gesellschaft' as it duplicates the original token
> # the 'schaft' as it is a sub-token 'gesellschaft' that is present in the
> dictionary
>
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