Re: [idn] reordering strawpoll

[David Hopwood <david.hopwood@zetnet.co.uk>]

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Soobok Lee wrote:
> From: <DougEwell2@cs.com>
> > In a message dated 2001-11-12 14:41:29 Pacific Standard Time,
> > lsb@postel.co.kr writes:
> >
> > >  If you encode each Hangul syllabic in 3 jamos in utf8,
> > >  it need 3 octets * 3 = 9 octets, while 3 basic latin letter need 3 octets
> > >  in utf8. 3 times more space!  if there were any real "compaction" on
> > >  hangul syllable code points, that may be just the bare minimum.
> >
> > But one paragraph earlier, Soobok stated that each hangul character is
> > roughly equivalent to (i.e. carries roughly as much information as) 2.2 to
> > 2.7 Latin letters.  So the 9 octets of UTF-8 actually encode the equivalent
> > of 6.6 to 8.1 Latin letters, which means Hangul encoding is 10% to 27% less
> > efficient than Latin encoding.  Representing it as two-thirds (67%) less
> > efficient is obviously misleading.  Such claims only detract attention away
> > from any merit the reordering plan may have.
> 
> my analogy cited above was for *UTF8*.

However, your argument that it is important to reduce the *average* length
of encoded names, certainly doesn't apply to UTF-8 (even if it's accepted
that it applies to ACE, which I don't accept).

Users will never see (much less type in) UTF-8 octet string encodings
except in obscure debugging situations. The 63-octet limitation on label
length when using UTF-8 appears to be sufficient, AFAICS (even for Indic
scripts, which are less efficient than Hangul in UTF-8).

- -- 
David Hopwood <david.hopwood@zetnet.co.uk>

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