Thai token type() bug
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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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