| From: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
|---|---|
| To: | Tatsuo Ishii <t-ishii(at)sra(dot)co(dot)jp> |
| Cc: | olly(at)lfix(dot)co(dot)uk, pgsql-hackers(at)postgresql(dot)org, 232217(at)bugs(dot)debian(dot)org |
| Subject: | Re: Unicode restriction |
| Date: | 2004-08-03 15:15:34 |
| Message-ID: | 23200.1091546134@sss.pgh.pa.us |
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| Lists: | pgsql-hackers |
Tatsuo Ishii <t-ishii(at)sra(dot)co(dot)jp> writes:
> Before 7.4, to be handled by regex routines, UTF-8 are converted to
> ISO 10646. There was a limitaion in regex routines in that they cannot
> handle multibyte characters > 2bytes. In another word only 16bit UCS-2
> are supported. That's why ISO 10646 > 0x10000 is rejected.
> I'm not sure if the regex routines include in 7.4 or later has this
> restrictions or not. If not, probably we could remove the check (with
> losing data compatibilty).
It looks to me like the regex routines now use pg_wchar, so I don't
think we need the restriction any longer.
regards, tom lane
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