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https://issues.apache.org/jira/browse/LUCENE-8265?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16448145#comment-16448145
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Alan Woodward commented on LUCENE-8265:
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I wonder if there's a better way of handling this than using the
KeywordAttribute, which as Nikolay says is heavily overloaded. Would it be
possible to somehow code up a TokenFilter that wraps another TokenFilter, and
bypasses the wrapped filter if a certain condition is met?
> WordDelimiterFilter should pass through terms marked as keywords
> ----------------------------------------------------------------
>
> Key: LUCENE-8265
> URL: https://issues.apache.org/jira/browse/LUCENE-8265
> Project: Lucene - Core
> Issue Type: Improvement
> Reporter: Mike Sokolov
> Priority: Major
> Time Spent: 10m
> Remaining Estimate: 0h
>
> This will help in cases where some terms containing separator characters
> should be split, but others should not. For example, this will enable a
> filter that identifies things that look like fractions and identifies them as
> keywords so that 1/2 does not become 12, while doing splitting and joining on
> terms that look like part numbers containing slashes, eg something like
> "sn-999123/1" might sometimes be written "sn-999123-1".
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