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https://issues.apache.org/jira/browse/LUCENE-8752?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16808716#comment-16808716
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Robert Muir commented on LUCENE-8752:
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+1
> 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
> 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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