- From: Klaus Weide <kweide@tezcat.com>
- Date: Tue, 10 Dec 1996 02:44:14 -0600 (CST)
- To: Koen Holtman <koen@win.tue.nl>
- cc: http-wg%cuckoo.hpl.hp.com@hplb.hpl.hp.com, www-international@w3.org
On Sun, 8 Dec 1996, Koen Holtman wrote:
> Klaus Weide:
> >
> [...using feature negotiation to negotiate on UTF-8....]
>
> >Maybe it is the most practical way. But no mechanism is in place yet,
> >while overloading the language header (and associated inventiveness with
> >new HTML tags) can be done now...
>
> Overloading a HTTP header and adding HTML tags will take _much_ more time
> than waiting for feature negotiation to be in place.
Let's hope so :). However, with overloading I meant treating
{Content,Accept}-Language headers (and related HTML tags or attributes)
as carrying character repertoire meaning - which is happening now.
> But skimming the UTF-8 specification, I gather that UTF-8 is an encoding
> mechanism, not a character set. HTTP offers the
> Accept-Encoding/Content-encoding headers to negotiate on this. Or does
> using Accept-Encoding only shift the problem to negotiating which part
> of UCS you can render?
It would be *nice* if UTF-8 could be treated that way, like a C-E (or
C-T-E, for mail). It could then be used for labelling and negotiation
of character encoding orthogonal to the question of repertoire.
But that isn't the case.
> When we reviewed the Accept-* header definitions for HTTP/1.1 early this
> year, we did not discuss the particular problem of character sets which
> could only be partially rendered, as would often be the case with unicode
> stuff. It is certainly possible that HTTP/1.1 cannot solve this problem,
> and maybe HTTP/1.1 + feature negotation also can't solve it.
[...]
> > I don't think that a HTTP/HTML/Web specific
> >feature tag registration can take over the IANA charset registry's
> ^^^^^^^^^
> >function.
>
> We are not aiming to take over any existing IANA registry.
I didn't mean that you were trying to do that. But using feature tags
for negotiating (labelling) sub-repertoire, i.e. "which characters can
be (are) used" with utf-8, would effectively amount to using them for
a function that could up to recently be done using IANA registered
charsets alone.
Klaus
Received on Tuesday, 10 December 1996 03:44:09 UTC