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From "Christian Moen (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (LUCENE-8752) Apply a patch to kuromoji dictionary to properly handle Japanese new era '令和' (REIWA)
Date Wed, 10 Apr 2019 14:03:00 GMT

    [ https://issues.apache.org/jira/browse/LUCENE-8752?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16814467#comment-16814467
] 

Christian Moen commented on LUCENE-8752:
----------------------------------------

Thanks a lot, [~Tomoko Uchida].

> Apply a patch to kuromoji dictionary to properly handle Japanese new era '令和' (REIWA)
> -------------------------------------------------------------------------------------
>
>                 Key: LUCENE-8752
>                 URL: https://issues.apache.org/jira/browse/LUCENE-8752
>             Project: Lucene - Core
>          Issue Type: Improvement
>          Components: modules/analysis
>            Reporter: Tomoko Uchida
>            Assignee: Tomoko Uchida
>            Priority: Minor
>
> As of May 1st, 2019, Japanese era '元号' (Gengo) will be set to '令和' (Reiwa). See
this article for more details:
> [https://www.bbc.com/news/world-asia-47769566]
> Currently '令和' is splitted up to '令' and '和' by {{JapaneseTokenizer}}. It should
be tokenized as one word so that Japanese texts including era names are searched as users
expect. Because the default Kuromoji dictionary (mecab-ipadic) has not been maintained since
2007, a one-line patch to the source CSV file is needed for this era change.
> Era name is used in many official or formal documents in Japan, so it would be desirable
the search systems properly handle this without adding a user dictionary or using phrase query.
:)
> FYI, JDK DateTime API will support the new era (in the next updates.)
> [https://blogs.oracle.com/java-platform-group/a-new-japanese-era-for-java]
> The patch is available here:
> [https://github.com/apache/lucene-solr/pull/632]
>  



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