Re: [idn] call for comments for REORDERING

["James Seng/Personal" <jseng@pobox.org.sg>]

Erm, I mean I concur with your opinion. (s/defer/concur/) Sorry if
anyone misunderstood me.

-James Seng

----- Original Message -----
From: "James Seng/Personal" <jseng@pobox.org.sg>
To: "Mark Davis" <mark@macchiato.com>; "Kenneth Whistler"
<kenw@sybase.com>
Cc: <idn@ops.ietf.org>
Sent: Friday, October 19, 2001 12:20 PM
Subject: Re: [idn] call for comments for REORDERING


> Thanks Ken & Mark for note. I defer to your opinion in this.
>
> -James Seng
>
> ----- Original Message -----
> From: "Mark Davis" <mark@macchiato.com>
> To: "Kenneth Whistler" <kenw@sybase.com>; <jseng@pobox.org.sg>
> Cc: <idn@ops.ietf.org>
> Sent: Friday, October 19, 2001 12:04 PM
> Subject: Re: [idn] call for comments for REORDERING
>
>
> > Ken is right; collation is *quite* complex. Anyone wanting to see
some
> of
> > what is involved can look at the ICU implementation (which is UCA
and
> ISO
> > 14651 compliant, and open-source):
> >
> > User Guide:
> > http://www-124.ibm.com/icu/userguide/Collate_Intro.html
> >
> > Internal Design:
> >
>
http://oss.software.ibm.com/cvs/icu/~checkout~/icuhtml/design/collation/
> ICU_
> > collation_design.htm
> > (source files are linked from there)
> >
> > ICU home:
> > http://oss.software.ibm.com/icu/
> >
> > While the perfomance is good, the code is many, many orders of
> magnitude
> > more complicated than the current nameprep. It is not appropriate
for
> IDN.
> >
> > Mark
> >
> > —————
> >
> > Δός μοι ποῦ στῶ, καὶ κινῶ τὴν γῆν — Ἀρχιμήδης
> > [http://www.macchiato.com]
> >
> > ----- Original Message -----
> > From: "Kenneth Whistler" <kenw@sybase.com>
> > To: <jseng@pobox.org.sg>
> > Cc: <idn@ops.ietf.org>
> > Sent: Thursday, October 18, 2001 8:28 PM
> > Subject: Re: [idn] call for comments for REORDERING
> >
> >
> > > James Seng said:
> > >
> > > > Third, I would really prefer to reference a work from
established
> expert
> > > > group if possible. For example, ISO/IEC JTC1/SC22/WG20 publishes
> ISO
> > > > 14651 on weighted sorting. I am not sure how ISO 14651 would
> perform for
> > > > the IDN purpose but I thought it might be worthwhile to examine.
> > >
> > > As one of the principal authors of ISO 14651, who has also
> implemented
> > > the synchronized Unicode Technical Standard #10, the Unicode
> Collation
> > > Algorithm, I can attest that this is a very tricky and complicated
> > > area, and the algorithms to do all this correctly are not the kind
> > > you can write on the back of a cocktail napkin. It is very complex
> > > to get all the details right and to get good-performing algorithms
> > > (in speed and in resource usage). It is also very difficult for
> > > independent implementations to get themselves all exactly lined
> > > up, and even more difficult for independent implementations to
> *prove*
> > > that they are getting the same results for all data (as opposed to
> > > a particular result for one set of data -- which is pretty easy).
> > >
> > > IDN doesn't need to add this kind of headache to the already
> > > complex enough issues of nameprep.
> > >
> > > >
> > > > Whatever the case, we should make a decision quickly on this.
Lets
> not
> > > > drag this further if possible.
> > > >
> > > > -James Seng
> > > >
> > > > ----- Original Message -----
> > > > From: "Martin Duerst" <duerst@w3.org>
> > >
> > > > > So this is a solution in search of a real problem,
> > > > > not worth bothering the whole world with additional
> > > > > complexity.
> > >
> > > I heartily concur with Martin's assessment.
> > >
> > > --Ken Whistler
> > >
> > >
> > >
> >
>