- From: Roy T. Fielding <fielding@gbiv.com>
- Date: Thu, 21 Aug 2008 14:22:01 -0700
- To: Henri Sivonen <hsivonen@iki.fi>
- Cc: Richard Ishida <ishida@w3.org>, "'Ian Hickson'" <ian@hixie.ch>, "'HTML WG'" <public-html@w3.org>, <www-international@w3.org>
On Aug 21, 2008, at 12:55 PM, Henri Sivonen wrote: > On Aug 21, 2008, at 22:46, Roy T. Fielding wrote: >> On Aug 20, 2008, at 11:57 PM, Henri Sivonen wrote: >>> Is there software that acts on the HTTP header or meta Content- >>> Language in the sense "This is a document for people who read both >>> English and French"? What does software acting on that meaning do? >> >> That is the definition for the header field Content-Language, >> which is >> what is referred to by META http-equiv, and yes it is used by some >> content management systems as a means for authors to define metadata >> that will be returned by HTTP in a response and/or used in content >> negotiation to choose the most appropriate representation. > > How is it used in content negotiation so that software *acts on* it > (as opposed to acting on something else and outputting the outcome > in HTTP Content-Language)? It is extracted from the documents within a given directory to create a mapping of URIs to representation alternatives, which is then used during the response process. >> WGN is >> one of the HTTP servers that works that way by default, though I >> don't >> know if anyone uses it now. Apache can do that via modules. > > Do WGN and Apache use Content-Language as the input for a decision? WGN does, IIRC. Apache does if you enable the module for deriving meta maps from content (or from separate .var or .meta files when tied to the output of a simple perl script). CERN had .meta dirs for the same purpose, also capable of being populated with a cron. >> In any case, all of the http-equiv attributes are defined by HTTP. >> That is its definition in HTML. > > It's not the definition in HTML5 as drafted. Then add it to the things that are formal objections to HTML5. ....Roy
Received on Thursday, 21 August 2008 21:22:34 UTC