Re: An extended version of the Robots...

Art Matheny (matheny@usf.edu)
Tue, 12 Nov 1996 17:27:42 -0500 (EST)


On Tue, 12 Nov 1996, Hallvard B Furuseth wrote:

> It was thus said that the Great Captain Napalm once stated:
> >It was thus said that the Great Hallvard B Furuseth once stated:
[...]
> >> No. Then a robots.txt's default rule set (User-agent: *) would have to
> >> assume the robot does not understand version 2. This makes version 2
> >> pretty useless.
> >
> > You have to assume that reguardless of what the 2.0.0 spec looks like.
>
> No no no -- it's true that webmasters should write their robots.txt so
> it works for old robots, but they may also add rules that makes new
> robots behave *better* than old ones. That would be impossible if new
> rules interfere with old ones, so the default rule set cannot contain
> new rules.

There appears to be a problem with throwing *all* unknown robots into the
same default rule set regardless of whether they understand the 2.0 spec
or not. Has anyone suggested a special code for default version 2
robots? For example:

User-agent: other2_0
Robot-version: 2.0
Allow: *index.html
Disallow: /images*
...

User-agent: *
Disallow: /images
...

A version 2 compliant robot would recognize "other2_0" and use that
rule set, but a version 1 robot would ignore that rule set and use the
bottom one.

-- 
 LLLL  LLLLL LLLLLL  Arthur Matheny       LIB 612
LL  LL LL  LL  LL    Academic Computing   University of South Florida
LLLLLL LLLLL   LL    matheny@usf.edu      Tampa, FL 33620
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