Thank you, Robert.
I found the problem ...
Each Japanese character gets repeated in the search results. For example, if I 
search for "関数", I get this in the result list:
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Showing below results 1 - 20 of 111
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Checkers:BSTR.FUNC.LEN/ja 
SysStringLen 関数数ままたたは SysStringByteLen 関数数をを使使用用しして、BSTR 
以外外のの文文字字列列のの長長ささをを取取得得ししよよううととししてていいまます。 
これれららのの関関数数のの唯唯一一のの引引数数は、BSTR、CComBSTR、 … 
669 B (160 words) - 13:42, 30 September 2009
 

Checkers:VOIDRET/ja 
void 型のの関関数数ととししてて宣宣言言さされれたた関関数数がが値値をを返返ししてていいまます。 脆弱弱性性ととリリススク : 
スタタイイルル関関連連のの問問題題でです。 例 : void A:foo()5 6 return 0; // 値が void 関数数かからら返返さされれる 7 
… 
444 B (91 words) - 20:17, 1 February 2010
...
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It doesn't repeat English letter or word.
So, if I only search for 2 Japanese characters, I can get them from the result 
because the 2 characters can still be matched from the repeated characters.
If I search for more than 2 characters, it can't find anything.
 
What causes this problem, and how to fix?
Thanks again,
Ross

--- On Thu, 4/8/10, Robert Stojnic <[email protected]> wrote:


From: Robert Stojnic <[email protected]>
Subject: Re: [Mediawiki-l] Does Lucene-Search Support Japanese?
To: "MediaWiki announcements and site admin list" 
<[email protected]>
Received: Thursday, April 8, 2010, 2:15 AM



The config file looks good. To further debug steps:

1) make sure the search you are making is showing up in the 
lucene-search log, if you just start the deamon with ./lsearchd that 
would be the console
2) make sure you have all MWSearch that matches your MediaWiki version
3) note that you cannot search for a single japanese character, but only 
for 2 or more

r.

Ross Xu wrote:
> Thanks for your reply, Robert.
> But I did rebuild the index (./build) after changing (language,en) to 
> (language,ja). It still doesn't work. There is no problem with searching any 
> English keywords.
>
> You mentioned "add (language,ja)". Did you mean to ADD (language,ja) besides 
> (language,en)?
> The entry is like this in my lsearch-global.conf file:
> [Database]
> wikidb : (single) (spell,4,2) (language,ja)
>  
> Any more ideas?
> Thanks again,
> Ross
>
> --- On Wed, 4/7/10, Robert Stojnic <[email protected]> wrote:
>
>
> From: Robert Stojnic <[email protected]>
> Subject: Re: [Mediawiki-l] Does Lucene-Search Support Japanese?
> To: "MediaWiki announcements and site admin list" 
> <[email protected]>
> Received: Wednesday, April 7, 2010, 6:50 PM
>
>
>
> There is a rather limited support, but it does work (e.g. see 
> ja.wikipedia.org). Don't forget to rebuild your index (./build) after 
> you add (language,ja).
>
> r.
>
> Ross Xu wrote:
>   
>> Hi there,
>> I am using Lucene-Search 2.1/MWSearch for my MediaWiki 1.15.1.
>> It's working fine, but it can't search any Japanese characters.
>> I have tried (language,ja) in the lsearch-global.conf file, but it doesn't 
>> seem to make any difference.
>> Any idea would be appreciated,
>> Ross
>>   
>>   
>>
>>
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