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https://issues.apache.org/jira/browse/LUCENE-4072?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Robert Muir updated LUCENE-4072:
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Attachment: LUCENE-4072.patch
I looked over the patch, and added license headers and so on.
I also added some new tests, which currently fail. I think the problem is that
the current logic iterates characters (e.g. passing charAt(x) to
hasBoundaryBefore and so on), when it should be passing codepoints to these
methods.
> CharFilter that Unicode-normalizes input
> ----------------------------------------
>
> Key: LUCENE-4072
> URL: https://issues.apache.org/jira/browse/LUCENE-4072
> Project: Lucene - Core
> Issue Type: New Feature
> Components: modules/analysis
> Reporter: Ippei UKAI
> Attachments: DebugCode.txt,
> ippeiukai-ICUNormalizer2CharFilter-4752cad.zip, LUCENE-4072.patch,
> LUCENE-4072.patch, LUCENE-4072.patch
>
>
> I'd like to contribute a CharFilter that Unicode-normalizes input with ICU4J.
> The benefit of having this process as CharFilter is that tokenizer can work
> on normalised text while offset-correction ensuring fast vector highlighter
> and other offset-dependent features do not break.
> The implementation is available at following repository:
> https://github.com/ippeiukai/ICUNormalizer2CharFilter
> Unfortunately this is my unpaid side-project and cannot spend much time to
> merge my work to Lucene to make appropriate patch. I'd appreciate it if
> anyone could give it a go. I'm happy to relicense it to whatever that meets
> your needs.
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