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Date: Sat, 13 Jun 2009 02:47:07 -0700 (PDT)
From: "Michael McCandless (JIRA)" <jira@apache.org>
To: java-dev@lucene.apache.org
Subject: [jira] Updated: (LUCENE-1689) supplementary character handling
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     [ https://issues.apache.org/jira/browse/LUCENE-1689?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Michael McCandless updated LUCENE-1689:
---------------------------------------

    Fix Version/s: 2.9

> supplementary character handling
> --------------------------------
>
>                 Key: LUCENE-1689
>                 URL: https://issues.apache.org/jira/browse/LUCENE-1689
>             Project: Lucene - Java
>          Issue Type: Improvement
>            Reporter: Robert Muir
>            Priority: Minor
>             Fix For: 2.9
>
>         Attachments: LUCENE-1689_lowercase_example.txt
>
>
> for Java 5. Java 5 is based on unicode 4, which means variable-width encoding.
> supplementary character support should be fixed for code that works with char/char[]
> For example:
> StandardAnalyzer, SimpleAnalyzer, StopAnalyzer, etc should at least be changed so they don't actually remove suppl characters, or modified to look for surrogates and behave correctly.
> LowercaseFilter should be modified to lowercase suppl. characters correctly.
> CharTokenizer should either be deprecated or changed so that isTokenChar() and normalize() use int.
> in all of these cases code should remain optimized for the BMP case, and suppl characters should be the exception, but still work.

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