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https://issues.apache.org/jira/browse/LUCENE-1903?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12752818#action_12752818
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Mark Miller commented on LUCENE-1903:
-------------------------------------

Okay - I'm not sure if I'll short for tonight or the morning yet (not so late 
here).

bq.  A CHANGES.txt entry is not needed in my opinion, as this is not a new 
feature or a bug from 2.4.1.

This could prob be debated from a lot of angles - in the end, it appears pretty 
much up to each committer what they do -

My rule of thumb has been - when it comes to me, be modest, skip where it makes 
sense. But when it comes to someone else having reported
the issue - I always add a credit somehow. Outside contributions (in whatever 
form) deserves credit for reporting things and suppling things (especially 
tests), and I think it encourages that behavior to a small
degree. Proper credit to outside contributers is very important I think - thats 
why we put someones name right next to ours, even when the user
may have just reported the issue and we did all the work - or even if two 
people did 98% of the work and some guy drops a patch that changes
2%. Just my two cents on the subject though - take it for what its worth.

> Incorrect ShingleFilter behavior when outputUnigrams == false
> -------------------------------------------------------------
>
>                 Key: LUCENE-1903
>                 URL: https://issues.apache.org/jira/browse/LUCENE-1903
>             Project: Lucene - Java
>          Issue Type: Bug
>          Components: contrib/analyzers
>    Affects Versions: 2.9
>            Reporter: Chris Harris
>             Fix For: 2.9
>
>         Attachments: LUCENE-1903.patch, LUCENE-1903_testcases.patch, 
> LUCENE-1903_testcases_lucene2_4_1_version.patch, 
> TEST-org.apache.lucene.analysis.shingle.ShingleFilterTest.xml
>
>
> ShingleFilter isn't working as expected when outputUnigrams == false. In 
> particular, it is outputting unigrams at least some of the time when 
> outputUnigrams==false.
> I'll attach a patch to ShingleFilterTest.java that adds some test cases that 
> demonstrate the problem.
> I haven't checked this, but I hypothesize that the behavior for 
> outputUnigrams == false got changed when the class was upgraded to the new 
> TokenStream API?

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