Mapping (was: Issues lists and the "preprocessing" topic)

[Erik van der Poel]

The current IDNA spec is IDNA2003, and it includes the default
pre-processing steps. Now, IDNA200X is removing (the details of) the
pre-processing steps, so it ought to explain this major difference
between IDNA2003 and 200X. This explanation can mention the difference
between the "default" pre-processing (as seen in IDNA2003 and HTML
today) and the per-locale UI pre-processing such as Turkish
dotted/dotless uppercase 'i'. If the WG consensus is to leave out any
mention of UI pre-processing, that is fine, but I think it is quite
important that IDNA200X explain that the default pre-processing of
IDNA2003 has been removed.

Erik

On Wed, Aug 20, 2008 at 9:28 AM, Andrew Sullivan <ajs at commandprompt.com> wrote:
> On Tue, Aug 19, 2008 at 02:31:22PM -0400, John C Klensin wrote:
>
>> A-label form.  I've got a device here whose "keyboard" contains
>> specific keys for "www." and for ".com" and several other TLDs.
>> My using those keys is a UI convention: I press the single keys,
>> but the four-letter strings go into the file (or browser
>> location bar, or whatever).  These provisions for local mapping
>> are not really different from those specialized multi-character
>> keys if the conversions are done immediately.
>
> I don't find this example especially compelling, because it seems to
> be an example of a device doing special preparation before doing
> anything impinging on what I'd think of as "protocol space".  That is,
> it's taking your special key and using that to prepare certain
> combinations of characters that are often used in labels.  If that's
> all the local-mapping step is supposed to be, why can't we just be
> completely silent about it?  It's a user interface problem, and
> completely outside of the protocol.  If people want to encode their
> stuff in Revised Augmented EBCDIC, and write some preprocessor to
> change it all before it gets to the point where we are talking about a
> label (of any variety) in an IDNA-aware application, what business is
> it of ours?
>
> A
>
> --
> Andrew Sullivan
> ajs at commandprompt.com
> +1 503 667 4564 x104
> http://www.commandprompt.com/
> _______________________________________________
> Idna-update mailing list
> Idna-update at alvestrand.no
> http://www.alvestrand.no/mailman/listinfo/idna-update
>