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https://issues.apache.org/jira/browse/LUCENE-1702?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12721859#action_12721859
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Steven Rowe commented on LUCENE-1702:
-------------------------------------

bq. Steven I have been watching that jflex 1.5 branch with great anticipation :)

Cool!  If you mention this on the jflex-devel mailing list, you may be able to 
help nudge Gerwin Klein (JFlex founder and main developer) into starting work 
on merging the 1.5 branch onto the trunk :) 

bq. Do you think it will support characters outside of the BMP?

As you may already know, the 1.5 branch does not yet include above-BMP support. 
 However, this is definitely a future goal.

My guess is that 1.5.0 will be BMP-only, and that 1.5.X or 1.6 will add 
above-BMP support.  (This is my guess because the Unicode properties code is 
present and functional in the branch now, but no work has yet been done to add 
above-BMP support.)

> Thai token type() bug
> ---------------------
>
>                 Key: LUCENE-1702
>                 URL: https://issues.apache.org/jira/browse/LUCENE-1702
>             Project: Lucene - Java
>          Issue Type: Bug
>          Components: contrib/analyzers
>            Reporter: Robert Muir
>            Priority: Minor
>
> While adding tests for offsets & type to ThaiAnalyzer, i discovered it does 
> not type Thai numeric digits correctly.
> ThaiAnalyzer uses StandardTokenizer, and this is really an issue with the 
> grammar, which adds the entire [:Thai:] block to ALPHANUM.
> i propose that alphanum be described a little bit differently in the grammar.
> Instead, [:letter:] should be allowed to have diacritics/signs/combining 
> marks attached to it.
> this would allow the [:thai:] hack to be completely removed, would allow 
> StandardTokenizer to parse complex writing systems such as Indian languages, 
> and would fix LUCENE-1545.

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