[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
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Robert Muir updated LUCENE-1689:
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    Attachment: LUCENE-1689.patch

just a dump to show where I am trying to go.
I havent done anything to Whitespace/Letter yet, but you can see the changes to 
CharTokenizer.


> 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: 3.1
>
>         Attachments: LUCENE-1689.patch, LUCENE-1689_lowercase_example.txt, 
> testCurrentBehavior.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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