Re: A Great Idea (tm) about reimplementing NLS.

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On Friday 17 June 2005 04:21 am, Måns Rullgård wrote:
> Patrick McFarland <[email protected]> writes:
> > On Thursday 16 June 2005 11:04 am, Lennart Sorensen wrote:
> >>  Most people seem happy with 50 or so being a good limit even though
> >> many systems support much longer.
> >
> > 50 characters or 50 bytes? Because in the case of UTF-8, if you do a lot
> > of three byte characters (which require four bites to encode), 50 bytes
> > is very short.
>
> What do you mean by three-byte characters requiring four bytes to
> encode?  Is a three-byte character not a character encoded using three
> bytes?

(implication of utf8 and not utf16 goes here)

Very few Unicode characters require three bytes, instead of the usual one or 
two.

For one byte you just have the byte. 

For two bytes, you really have three: a control code stating "the following 
two bytes are a two byte character", and then the two bytes. 

For three bytes, you really have four bytes: a control code stating "the 
following three bytes are a three byte character" and then the three bytes.

Unless I've completely misunderstood the Unicode specification, this is what 
is going on.

> As for 50 bytes being too short, many of the multibyte characters are
> equivalent to several English characters, so fewer of them are
> required.  You have a point, though.

Any English characters (ie, the first 127 ascii characters) map directly to 
the first 127 Unicode characters (if thats what you meant).

-- 
Patrick "Diablo-D3" McFarland || [email protected]
"Computer games don't affect kids; I mean if Pac-Man affected us as kids, we'd 
all be running around in darkened rooms, munching magic pills and listening to
repetitive electronic music." -- Kristian Wilson, Nintendo, Inc, 1989

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