# Re: Another snapshot of the URL document.

Martijn Koster (m.koster@nexor.co.uk)
Tue, 05 Jul 1994 17:10:22 +0100

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    Message-Id: <9407051611.AA19722@mocha.bunyip.com>

    To: Guido.van.Rossum@cwi.nl

    Subject: Re: Another snapshot of the URL document.

    In-Reply-To: Your message of "Tue, 05 Jul 1994 14:31:39 +0200."             <9407051231.AA08351=guido@voorn.cwi.nl>

    Date: Tue, 05 Jul 1994 17:10:22 +0100

    From: Martijn Koster <m.koster@nexor.co.uk>

Guido van Rossum wrote:

> Is the reverse also true (that if / is used there is a hierarchical
> structure)? (I guess not, e.g. the map server at Xerox PARC uses /
> to separate options but they can be in any order.)

I've been wondering about this too, as ArchiePlex also used '/' to
separate unordered options.

I guess that in practice it doesn't matter as long as you don't
generate things like '/../'. On a more philosophical point you can
argue that even in the XEROX/Archieplex case there is a hierarchical
structure, it's just that different paths of the URL tree have the
same document associated with them, which is fair enough.

It is probably politically more correct to not use '/' for unordered
sets of options though. I changed ArchiePlex to use '&', which is a
safe character. Long live the HTTP Referer for helping me to track
down the documents that continue to use links with the '/' separated
version :-)

-- Martijn
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