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https://issues.apache.org/jira/browse/LUCENE-5770?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14053252#comment-14053252
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ASF subversion and git services commented on LUCENE-5770:
---------------------------------------------------------
Commit 1608313 from [~steve_rowe] in branch 'dev/branches/branch_4x'
[ https://svn.apache.org/r1608313 ]
LUCENE-5770: Upgrade to JFlex 1.6, which has direct support for supplementary
code points - as a result, ICU4J is no longer used to generate surrogate pairs
to augment JFlex scanner specifications. (merged trunk r1608134)
> 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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