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https://issues.apache.org/jira/browse/LUCENE-3526?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13134205#comment-13134205
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Michael McCandless commented on LUCENE-3526:
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I think the hack is actually correct, but maybe change it to check
termEnum.position >= 0?
So this was a case we missed from LUCENE-3183 (maybe there are more!?), where
we decided for the corner case of empty field and term text, the caller must
handle that the returned enum is unpositioned (in exchange for not adding an if
per next).
And maybe add the same comment about LUCENE-3183 on top of that logic?
> preflex codec returns wrong terms if you use an empty field name
> ----------------------------------------------------------------
>
> Key: LUCENE-3526
> URL: https://issues.apache.org/jira/browse/LUCENE-3526
> Project: Lucene - Java
> Issue Type: Bug
> Affects Versions: 4.0
> Reporter: Robert Muir
> Attachments: LUCENE-3526.patch, LUCENE-3526_test.patch,
> LUCENE-3526_test.patch, LUCENE-3526_test.patch, LUCENE-3526_test.patch
>
>
> spinoff from LUCENE-3473.
> I have a standalone test for this... the termsenum is returning a bogus extra
> empty-term (I assume it has no postings, i didnt try).
> This causes the checkindex test in LUCENE-3473 to fail, because there are 4
> terms instead of 3.
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