Thank you for your reply.
> > Result of uid sort by subject is not expected.
> > for example: Japanese => English => Japanese => English
>
> you don't mean those 4 words, but phrases in these languages, right?
In my case, sorting result is something strange.
Miss-sorted subjects were as bellow (REVERSE SUBJECT):
--------------------------------------------------------------------
?????????????????????????
[12559-2]Re:?????????????????????????
RE: [12559-2]Re:?????????????????????????
[12559-5]Re:?????????????????????????
?????????? ?? 40% OFF
[10260-2]Re:??????????????
--------------------------------------------------------------------
> Did you verified sorting here:
>
> http://demo.icu-project.org/icu-bin/locexp?_=en_US&d_=en&x=col
Now I did check the order of these subjects at this site.
On this site, my mail subjects were sorted correctly.
----- Original Message -----> -----BEGIN PGP SIGNED MESSAGE-----
> Hash: SHA1
>
> On Wed, 2 Aug 2017, TACHIBANA Masashi wrote:
>
> > Result of uid sort by subject is not expected.
> > for example: Japanese => English => Japanese => English
>
> you don't mean those 4 words, but phrases in these languages, right?
>
> > I'm now using Dovecot 2.2.31.
> >
> > command example:
> > HNKK6 UID SORT (REVERSE SUBJECT) utf-7 ALL
> > * SORT 3 1 7 2 4 10 11 8 12
> > HNKK6 OK Sort completed (0.002 + 0.041 + 0.001 secs).
> >
> > Any hint?
>
> If this is a subject sort, shouldn't you post the subjects that have
been
> mis-sorted?
>
> Did you verified sorting here:
>
> http://demo.icu-project.org/icu-bin/locexp?_=en_US&d_=en&x=col
>
> - --
> Steffen Kaiser
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--
Masashi Astro TACHIBANA QUALITIA CO., LTD.
mailto:tachibana at qualitia.co.jp