Re: UNICODE characters above 0x10000

Possibly, since I got it wrong once more....
About to give up, but attached, Updated patch.

Regards,

John Hansen

-----Original Message-----
From: Oliver Elphick [mailto:olly(at)lfix(dot)co(dot)uk]
Sent: Saturday, August 07, 2004 3:56 PM
To: Tom Lane
Cc: John Hansen; Hackers; Patches
Subject: Re: [HACKERS] UNICODE characters above 0x10000

On Sat, 2004-08-07 at 06:06, Tom Lane wrote:
> Now it's entirely possible that the underlying support is a few bricks

> shy of a load --- for instance I see that pg_utf_mblen thinks there
> are no UTF8 codes longer than 3 bytes whereas your code goes to 4.
> I'm not an expert on this stuff, so I don't know what the UTF8 spec
> actually says. But I do think you are fixing the code at the wrong
level.

UTF-8 characters can be up to 6 bytes long:
http://www.cl.cam.ac.uk/~mgk25/unicode.html

glibc provides various routines (mb...) for handling Unicode. How many
of our supported platforms don't have these? If there are still some
that don't, wouldn't it be better to use the standard routines where
they do exist?

--
Oliver Elphick olly(at)lfix(dot)co(dot)uk
Isle of Wight http://www.lfix.co.uk/oliver
GPG: 1024D/A54310EA 92C8 39E7 280E 3631 3F0E 1EC0 5664 7A2F A543 10EA
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