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https://issues.apache.org/jira/browse/LUCENE-8327?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16484065#comment-16484065
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Alan Woodward commented on LUCENE-8327:
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Here's an initial patch sketching out the idea. It still needs a filter
factory and adding into CustomAnalyzer, and it would be nice to somehow add it
into TestRandomChains. A caveat is that I don't think this will work with
tokenfilters that need to read ahead, like SynonymFilter.
> Add a multiplexing TokenFilter
> ------------------------------
>
> Key: LUCENE-8327
> URL: https://issues.apache.org/jira/browse/LUCENE-8327
> Project: Lucene - Core
> Issue Type: New Feature
> Reporter: Alan Woodward
> Assignee: Alan Woodward
> Priority: Major
> Attachments: LUCENE-8327.patch
>
>
> Following on from LUCENE-8273, and as a prerequisite of LUCENE-8308, it would
> be useful to have a TokenFilter that takes a number of child filters, and
> repeats its incoming stream, applying each filter in turn. So for example,
> you could keep the original term, output ngrams, and apply stemming, all in
> the same token stream.
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