Re: [v9.2] make_greater_string() does not return a string in some cases
| От | Robert Haas |
|---|---|
| Тема | Re: [v9.2] make_greater_string() does not return a string in some cases |
| Дата | |
| Msg-id | CA+TgmobVjxK6DAuGHJ=nLgnfYHP4s7EAp19E86pzd4DudGhY4w@mail.gmail.com обсуждение исходный текст |
| Ответ на | Re: [v9.2] make_greater_string() does not return a string in some cases (Tom Lane <tgl@sss.pgh.pa.us>) |
| Ответы |
Re: [v9.2] make_greater_string() does not return a string in some cases
Re: [v9.2] make_greater_string() does not return a string in some cases |
| Список | pgsql-hackers |
On Mon, Oct 17, 2011 at 11:54 PM, Tom Lane <tgl@sss.pgh.pa.us> wrote: > Robert Haas <robertmhaas@gmail.com> writes: >> - Why does the second byte need special handling for 0xED and 0xF4? > > http://www.faqs.org/rfcs/rfc3629.html > > See section 4 in particular. The underlying requirement is to disallow > multiple representations of the same Unicode code point. I'm still confused. The input string is already known to be valid UTF-8, so the second byte (if there is one) must be between 0x80 and 0xBF. Therefore it will be neither 0xED nor 0xF4. -- Robert Haas EnterpriseDB: http://www.enterprisedb.com The Enterprise PostgreSQL Company
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