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https://issues.apache.org/jira/browse/SOLR-8606?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Lespiau updated SOLR-8606:
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Attachment: SOLR-8686-TEST.patch
Give an example of the incorrect behavior
> Duplicate tokens using WordDelimiterFilter for a specific configuration
> -----------------------------------------------------------------------
>
> Key: SOLR-8606
> URL: https://issues.apache.org/jira/browse/SOLR-8606
> Project: Solr
> Issue Type: Bug
> Reporter: Lespiau
> Priority: Minor
> Attachments: SOLR-8686-TEST.patch
>
>
> When using both the options PRESERVE_ORIGINAL| SPLIT_ON_CASE_CHANGE and
> CONCATENATE_ALL|CATENATE_WORDS using the WordDelimiterFilter, we have
> duplicate tokens on strings contaning only case changes.
> When using the SPLIT_ON_CASE_CHANGE option, "abcDef" is split into "abc",
> "Def".
> When having PRESERVE_ORIGINAL, we keep "abcDef".
> However, when one uses CONCATENATE_ALL or CATENATE_WORDS, it also adds an
> other token built from the concatenation of the splited words, giving
> "abcDef" again.
> I'm not 100% certain that token filters should not produce duplicate tokens
> (same word, same start and end positions). Can someone confirm this is a bug ?
> I supply a patch that gives a test explosing the incorrect behavior.
> I'm willing to work on the following days to fix that.
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