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From "Robert Muir (JIRA)" <>
Subject [jira] [Commented] (LUCENE-3747) Support Unicode 6.1.0
Date Tue, 17 Jul 2012 13:19:34 GMT


Robert Muir commented on LUCENE-3747:

Ill comment on the other things, but just to answer this:

AFAICT, this is because the accent decomposition mappings are no longer present in nfkc.txt.
This makes no sense; Robert, do you know what's happening here?

You need to bring in nfc.txt too now.
> Support Unicode 6.1.0
> ---------------------
>                 Key: LUCENE-3747
>                 URL:
>             Project: Lucene - Java
>          Issue Type: Improvement
>          Components: modules/analysis
>    Affects Versions: 3.5, 4.0-ALPHA
>            Reporter: Steven Rowe
>            Priority: Minor
>         Attachments: LUCENE-3747.patch
> Now that Unicode 6.1.0 has been released, Lucene/Solr should support it.
> JFlex trunk now supports Unicode 6.1.0.
> Tasks include:
> * Upgrade ICU4J to v49 (after it's released, on 2012-03-21, according to
> * Use {{icu}} module tools to regenerate the supplementary character additions to JFlex
> * Version the JFlex grammars: copy the current implementations to {{*Impl3<X>}};
cause the versioning tokenizer wrappers to instantiate this version when the {{Version}} c-tor
param is in the range 3.1 to the version in which these changes are released (excluding the
range endpoints); then change the specified Unicode version in the non-versioned JFlex grammars
from 6.0 to 6.1.
> * Regenerate JFlex scanners, including {{StandardTokenizerImpl}}, {{UAX29URLEmailTokenizerImpl}},
and {{HTMLStripCharFilter}}.
> * Using {{}}, generate and then run {{}}
 under {{modules/analysis/common/src/test/org/apache/lucene/analysis/core/}}

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