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From "Michael McCandless (Updated) (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (LUCENE-3940) When Japanese (Kuromoji) tokenizer removes a punctuation token it should leave a hole
Date Sat, 31 Mar 2012 00:21:25 GMT

     [ https://issues.apache.org/jira/browse/LUCENE-3940?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Michael McCandless updated LUCENE-3940:
---------------------------------------

    Attachment: LUCENE-3940.patch

Patch; I think it's ready, except, I need to make a simpler test case than that new curious
string....
                
> When Japanese (Kuromoji) tokenizer removes a punctuation token it should leave a hole
> -------------------------------------------------------------------------------------
>
>                 Key: LUCENE-3940
>                 URL: https://issues.apache.org/jira/browse/LUCENE-3940
>             Project: Lucene - Java
>          Issue Type: Bug
>            Reporter: Michael McCandless
>            Assignee: Michael McCandless
>            Priority: Minor
>             Fix For: 4.0
>
>         Attachments: LUCENE-3940.patch
>
>
> I modified BaseTokenStreamTestCase to assert that the start/end
> offsets match for graph (posLen > 1) tokens, and this caught a bug in
> Kuromoji when the decompounding of a compound token has a punctuation
> token that's dropped.
> In this case we should leave hole(s) so that the graph is intact, ie,
> the graph should look the same as if the punctuation tokens were not
> initially removed, but then a StopFilter had removed them.
> This also affects tokens that have no compound over them, ie we fail
> to leave a hole today when we remove the punctuation tokens.
> I'm not sure this is serious enough to warrant fixing in 3.6 at the
> last minute...

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