Re: While it is still fresh in our minds: '!' is not just a funny fragment identifier...

> This is a major difference that we should not forget about.

Absolutely, right.

I was more thinking in terms of spec work:  we should not try to (re)invent the wheel and touch fragment IDs where they're already well-defined (like HTML), but on the other hand, for new media types (for instance a JSON PWP manifest?) we have new grounds to explore and it may be relevant to consider at a fragment identifier-based approach (which is, as you correctly point out, technically different from a custom-URL-separator-based approach).

Romain.

> On 21 Dec 2015, at 18:21, Ivan Herman <ivan@w3.org> wrote:
> 
> This came up today, I think maybe Romain mentioned it: that the '!' approach for content URL looks very much like a fragment ID, so why do we make a differentiation? (But I may have misunderstood the remark, in which case my apologies!)
> 
> There is one aspect that we should not forget about where '!' and '#' are very different. Per HTTP the fragment identifier is resolved, and acted upon, on the client side. Ie, the approach is that if I request
> 
> http://www.example.org/A#B <http://www.example.org/A#B>
> 
> then the GET request will deliver the http://www.example.org/A <http://www.example.org/A> as a whole to the client, which will then select, in a second step, B out of A.
> 
> However, a '!' is a bona fide part of a URI. Ie, if I request
> 
> http://www.example.org/A!B <http://www.example.org/A!B>
> 
> then the server is supposed to deliver http://www.example.org/A!B <http://www.example.org/A!B> to the client, not http://www.example.org/A <http://www.example.org/A> (whatever that is).
> 
> This is a major difference that we should not forget about.
> 
> Happy holidays and lots of rest to all of you/us!
> 
> Ivan
> 
> 
> 
> ----
> Ivan Herman, W3C
> Digital Publishing Lead
> Home: http://www.w3.org/People/Ivan/ <http://www.w3.org/People/Ivan/>
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> ORCID ID: http://orcid.org/0000-0003-0782-2704 <http://orcid.org/0000-0003-0782-2704>
> 
> 
> 
>