Re: Fixed length data types issue

From: Martijn van Oosterhout <kleptog(at)svana(dot)org>
To: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
Cc: Gregory Stark <gsstark(at)mit(dot)edu>, andrew(at)supernews(dot)com, pgsql-hackers(at)postgresql(dot)org
Subject: Re: Fixed length data types issue
Date: 2006-09-08 16:30:39
Message-ID: 20060908163039.GK5479@svana.org
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On Fri, Sep 08, 2006 at 12:19:19PM -0400, Tom Lane wrote:
> Martijn van Oosterhout <kleptog(at)svana(dot)org> writes:
> > On Fri, Sep 08, 2006 at 10:35:58AM -0400, Tom Lane wrote:
> >> what's more, the docs suggest that it doesn't support anything wider
> >> than UTF16.
>
> > Well, that's not true, which part of the docs were you looking at?
>
> AFAICT, most of the useful operations work on UChar, which is uint16:
> http://icu.sourceforge.net/apiref/icu4c/umachine_8h.html#6bb9fad572d65b305324ef288165e2ac

Oh, you're confusing UCS-2 with UTF-16, UCS-2 is a subset of UTF-16
that only handles the basic plane. Just like no-one is surprised that
UTF-8 handles more than 256 characters, it shouldn't surprise you that
UTF-16 handles more than 65536. ICU hasn't used UCS-2 since 1996.

It's in the FAQ:
http://icu.sourceforge.net/userguide/icufaq.html

Have a nice day,
--
Martijn van Oosterhout <kleptog(at)svana(dot)org> http://svana.org/kleptog/
> From each according to his ability. To each according to his ability to litigate.

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