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https://issues.apache.org/jira/browse/LUCENE-8752?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16817146#comment-16817146
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Uwe Schindler commented on LUCENE-8752:
---------------------------------------

Hi [~Tomoko Uchida],
there was a RAT error during precommit task, because a license header was 
missing on the patch file.

In a first try i just disabled the license checks for the patches folder - but 
i found out that the patch tool ignores anything before the +++/--- lines of 
the patch. So I just added a ASF2 license header above the patch and reverted 
my first commit.

As the file was patched by you and (the Lucene  committers), the patch itsself 
is licensed by ASF2 license.

> 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
>             Fix For: 8.1, master (9.0)
>
>         Attachments: LUCENE-8752.patch
>
>          Time Spent: 20m
>  Remaining Estimate: 0h
>
> 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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