[sqlite] report a bug

[叶落天下秋]

I want to report a bug.


I write a tokenizer named thai?which is working according to the rule of thai 
vowel,not by space.


I build a table using fts5,like this,
CREATE VIRTUAL TABLE tbl_tha using fts5( key1, key2,TOKENIZE="thai"); 


and then insert a record:
insert into tbl_tha  values('??????','??????');


querying like this:


SQL1:select * from tbl_tha   where tbl_tha  match '????????????';
SQL2:select * from tbl_tha   where tbl_tha  match '?????? ??????';


SQL2 can query the result,but SQL1 return null;


I have confirmed that,the tokenize can split ???????????? correctly to 
??? ??? ???? ??


Is that a bug which can not query multi column?


wangjian
Thanks