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https://issues.apache.org/jira/browse/LUCENE-4656?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13542995#comment-13542995
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Adrien Grand commented on LUCENE-4656:
--------------------------------------

bq. So we should fix IndexWriter to handle that case?

How would IndexWriter handle token streams with no TermToBytesRefAttribute?
 - fail if the tokens stream happens to have tokens? (incrementToken returns 
true at least once)
 - index empty terms?
                
> Fix EmptyTokenizer
> ------------------
>
>                 Key: LUCENE-4656
>                 URL: https://issues.apache.org/jira/browse/LUCENE-4656
>             Project: Lucene - Core
>          Issue Type: Bug
>          Components: modules/analysis
>            Reporter: Adrien Grand
>            Assignee: Adrien Grand
>            Priority: Trivial
>         Attachments: LUCENE-4656.patch, LUCENE-4656.patch
>
>
> TestRandomChains can fail because EmptyTokenizer doesn't have a 
> CharTermAttribute and doesn't compute the end offset (if the offset attribute 
> was added by a filter).

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