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https://issues.apache.org/jira/browse/LUCENE-10239?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17445559#comment-17445559
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Robert Muir commented on LUCENE-10239:
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I'd like to do a "minimal" upgrade for this issue, and followup separately with
issues such as incrementing unicode versions and using the new emoji properties.
> upgrade jflex (1.7.0 -> 1.8.2)
> ------------------------------
>
> Key: LUCENE-10239
> URL: https://issues.apache.org/jira/browse/LUCENE-10239
> Project: Lucene - Core
> Issue Type: Task
> Reporter: Robert Muir
> Priority: Major
>
> When reviewing LUCENE-10238, I noticed we still had unicode 9.0 data
> specified for our jflex tokenizers.
> According to the changelog I see some key benefits from upgrading to jflex
> 1.8.2:
> * unicode 9 -> unicode 12.1
> * remove our custom emoji regeneration via ICU, as jflex supports emoji
> properties directly now.
> * Less RAM at runtime to users (two stage tables):
> https://github.com/jflex-de/jflex/pull/697
> https://www.jflex.de/changelog.html
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