Re: Unicode combining characters

If no one can find a case where multibyte is slower, I think we should
enable it by default.  Comments?


> > Also, have we decided if multibyte should be the configure default now?
> 
> Not sure.
> 
> Anyway I have tested LIKE/REGEX query test using current. The query
> executed is:
> 
> explain analyze select '0000000 5089 474e...( 16475
> bytes long text containing only 0-9a-z chars) like 'aaa';
> 
> and
> 
> explain analyze select '0000000 5089 474e...( 16475
> bytes long text containing only 0-9a-z chars) ~ 'aaa';
> 
> Here is the result:
> 
>     no MB        with MB
> LIKE    0.09 msec    0.08 msec
> REGEX    0.09 msec    0.10 msec
> 
> LIKE with MB seemed to be resonably fast, but REGEX with MB seemed a
> little bit slow. Probably this is due the wide character conversion
> overhead.
> --
> Tatsuo Ishii
> 
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