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https://issues.apache.org/jira/browse/LUCENE-7877?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16054221#comment-16054221
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David Smiley commented on LUCENE-7877:
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I was curious what this thing was, since I hadn't noticed it before. It
appears to have been introduced with LUCENE-1320 ShingleMatrixFilter.
ShingleMatrixFilter is today nowhere to be found; it was removed in LUCENE-2920
by [~thetaphi] because, in his words, it was unmaintained and buggy. I wonder
if it's worthwhile to even have these Prefix-etc. token filters? Any way I
have no opinion but I wanted to share what I dug up.
> Replace PrefixAwareTokenStream
> ------------------------------
>
> Key: LUCENE-7877
> URL: https://issues.apache.org/jira/browse/LUCENE-7877
> Project: Lucene - Core
> Issue Type: Improvement
> Reporter: Alan Woodward
> Assignee: Alan Woodward
> Attachments: LUCENE-7877.patch, LUCENE-7877.patch
>
>
> PrefixAwareTokenStream/PrefixAndSuffixAwareTokenStream use the deprecated and
> broken Token class, which means they will not work with custom attributes.
> We should fix/replace them.
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