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https://issues.apache.org/jira/browse/LUCENE-4479?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13475055#comment-13475055
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Alan Woodward commented on LUCENE-4479:
---------------------------------------
It looks as though these classes are only used by the DefaultSolrHighlighter,
which is broken under these circumstances. I'll make those changes, and see if
any tests fail...
> TokenSources.getTokenStream() doesn't return correctly for termvectors with
> positions but no offsets
> ----------------------------------------------------------------------------------------------------
>
> Key: LUCENE-4479
> URL: https://issues.apache.org/jira/browse/LUCENE-4479
> Project: Lucene - Core
> Issue Type: Bug
> Components: modules/highlighter
> Affects Versions: 4.0
> Reporter: Alan Woodward
> Priority: Minor
> Attachments: LUCENE-4479.patch
>
>
> The javadocs for TokenSources.getTokenStream(Terms, boolean) state:
> "Low level api. Returns a token stream or null if no offset info available
> in index. This can be used to feed the highlighter with a pre-parsed token
> stream"
> However, if the Terms instance passed in has positions but no offsets stored,
> a TokenStream is incorrectly returned, rather than null.
> This has the effect of incorrectly highlighting fields with term vectors and
> positions, but no offsets. All highlighting markup is prepended to the
> beginning of the field.
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