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https://issues.apache.org/jira/browse/LUCENE-1559?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12681347#action_12681347
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Uwe Schindler commented on LUCENE-1559:
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The problems with POI often come from the fact, that POI does not filter the
outputted characters and sometimes even generates non Unicode conform char
values (>0xd000). E.g. you sometimes have non-breaking-spaces instead of normal
spaces or other things. Depending on the Lucene Analyzer you use, there may be
problems. E.g., TIKA uses a filter that maps all incorrect characters coming
from POI according to aloowed chars in XML (because it generates XHTML from the
docs that can be indexed using TikaAnalyzer).
I think, your problem is invalid plain text content coming from POI.
> Highlighting not working in some instances even though indexsearcher returns
> result.
> ------------------------------------------------------------------------------------
>
> Key: LUCENE-1559
> URL: https://issues.apache.org/jira/browse/LUCENE-1559
> Project: Lucene - Java
> Issue Type: Bug
> Affects Versions: 2.4
> Environment: Mac OS 1.5
> Eclipse 3.4
> Reporter: Amin Mohammed-Coleman
> Attachments: AJiA CH 02.doc, HighLightingSummaryTest(2).java,
> HighLightingSummaryTest.java
>
>
> In some instances highlighting does not return a result. However when you
> use a different term for teh same document you get results.
> Please see attach testcase and template file.
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