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From "Robert Muir (JIRA)" <>
Subject [jira] Created: (LUCENE-1689) supplementary character handling
Date Fri, 12 Jun 2009 18:36:07 GMT
supplementary character handling

                 Key: LUCENE-1689
             Project: Lucene - Java
          Issue Type: Improvement
            Reporter: Robert Muir
            Priority: Minor

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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