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https://issues.apache.org/jira/browse/LUCENE-2121?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Robert Muir updated LUCENE-2121:
--------------------------------

    Attachment: LUCENE-2121.patch

> add UnicodeUtil.nextValidUTF16String 
> -------------------------------------
>
>                 Key: LUCENE-2121
>                 URL: https://issues.apache.org/jira/browse/LUCENE-2121
>             Project: Lucene - Java
>          Issue Type: Task
>            Reporter: Robert Muir
>             Fix For: Flex Branch
>
>         Attachments: LUCENE-2121.patch
>
>
> In flex branch, TermRef must not contain unpaired surrogates, etc.
> But in trunk/previous releases, people could (and do) seek to these.
> Also some lucene multitermqueries will generate these invalid seek locations, 
> even now (which we should separately fix)
> I think the common case is already handled with a hack in 
> SegmentReader.LegacyTermEnum, but we should clean up this hack and handle all 
> cases.
> I would also like to use this nextValidUTF16String in LUCENE-1606, and there 
> might be other places it could be used for better bw compat.

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