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https://issues.apache.org/jira/browse/LUCENE-8516?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16631756#comment-16631756
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Robert Muir commented on LUCENE-8516:
-------------------------------------
It just doesnt seem like it will really improve anything if it takes that
tokenizer parameter. Depending on what the tokenizer does, it may still be
buggy just like before. still a tokenfilter in disguise. That is clear from the
api being totally wrong (tokenizer taking tokenizer as input).
> Make WordDelimiterGraphFilter a Tokenizer
> -----------------------------------------
>
> Key: LUCENE-8516
> URL: https://issues.apache.org/jira/browse/LUCENE-8516
> Project: Lucene - Core
> Issue Type: Task
> Reporter: Alan Woodward
> Assignee: Alan Woodward
> Priority: Major
> Attachments: LUCENE-8516.patch
>
>
> Being able to split tokens up at arbitrary points in a filter chain, in
> effect adding a second round of tokenization, can cause any number of
> problems when trying to keep tokenstreams to contract. The most common
> offender here is the WordDelimiterGraphFilter, which can produce broken
> offsets in a wide range of situations.
> We should make WDGF a Tokenizer in its own right, which should preserve all
> the functionality we need, but make reasoning about the resulting tokenstream
> much simpler.
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