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https://issues.apache.org/jira/browse/LUCENE-5770?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Steve Rowe resolved LUCENE-5770.
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Resolution: Fixed
Committed to trunk and branch_4x.
On branch_4x, I set up the previous versions of StandardTokenizerImpl and
UAX29URLEmailTokenizerImpl, along with ClassicTokenizer, to be generated using
JFlex 1.5.1, so that the grammars don't have to be modified.
> Upgrade JFlex to 1.6.0
> ----------------------
>
> Key: LUCENE-5770
> URL: https://issues.apache.org/jira/browse/LUCENE-5770
> Project: Lucene - Core
> Issue Type: Task
> Reporter: Steve Rowe
> Assignee: Steve Rowe
> Priority: Minor
> Fix For: 5.0, 4.10
>
> Attachments: LUCENE-5770.patch, LUCENE-5770.patch
>
>
> JFlex 1.6, to be released shortly, will have direct support for supplementary
> code points - JFlex 1.5 and earlier only support code points in the BMP.
> We can drop the use of ICU4J to generate surrogate pairs to extend our JFlex
> scanner specifications to handle supplementary code points.
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