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https://issues.apache.org/jira/browse/LUCENE-8125?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Robert Muir updated LUCENE-8125:
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Attachment: LUCENE-8125.patch
Here's a patch. I did more cleanup of outdated breakiterator stuff while I was
here. Its not needed after the ICU upgrade (LUCENE-8122).
I added some simple tests, e.g. sequences such as 👩❤️👩 (WOMAN + ZWJ + HEAVY
BLACK HEART + VARIATION SELECTOR-16 + ZWJ + WOMAN) are recognized as one token
because the rules already knew that.
the filters we have such as ICUNormalizer2Filter/ICUFoldingFilter would reduce
the above to WOMAN + HEAVY BLACK HEART + WOMAN, because they remove the default
ignorables.
> emoji sequence support in ICUTokenizer
> --------------------------------------
>
> Key: LUCENE-8125
> URL: https://issues.apache.org/jira/browse/LUCENE-8125
> Project: Lucene - Core
> Issue Type: Improvement
> Reporter: Robert Muir
> Attachments: LUCENE-8125.patch
>
>
> uax29 word break rules already know how to handle these correctly, we just
> need to assign them a token type.
> This is better than users trying to do this with custom rules (e.g.
> LUCENE-7916) because they are script-independent (common/inherited).
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