Re: [htdig-dev] Re: Forward porting changes for 3.1.6 to 3.2.0b4

[Gilles D. <gr...@sc...>]

According to Lachlan Andrew:
> Greetings Gilles,
> 
> Most of the forward ports that I feel confident to do are 
> now at
> <http://www.ee.mu.oz.au/staff/lha/patch.forward-ports>
> with the list of changes at
> <http://www.ee.mu.oz.au/staff/lha/htdig-3.1.6-3.2-ports>.
> 
> Could you please apply them? The patches are relative to 
> the status at  2002-11-07.

Thanks, Lachlan.  Unfortunately I won't have time to tackle this in the
next day or two, but I'll try to get them in before week's end, so that
they make it into the next snapshot.

> Both  defaults.cc  and  defaults.xml  (in Brian White's 
> format) are up-to-date with respect to the new attributes.
> 
> The  multimatch_factor  has been cleaned up a bit compared 
> with 3.1.6.  It now counts how many "OR" terms a document 
> matches.  (For Boolean queries, the result of an "AND" is 
> taken to match the average of the two arguments.)  
> Currently, it simply multiplies by  multimatch_factor  if 
> there is more than one match, but the originally documented 
> functionality can be implemented by changing the line 822 
> parser.cc (in Parser::parse) from
>     dm->score *= multimatch_factor;
> to
>     dm->score *= pow (multimatch_factor, orMatches - 1.0);
> if you really want that exponential growth.

Sounds good.  If it's simple enough to do so, I may backport this to 3.1.7
when I finally get around to working on that.

> On Mon, 11 Nov 2002 15:57, Geoff Hutchison wrote:
> > A few notes:
> > * does rewrite at start of got_href suffice?
> > No. Remember that you might want to rewrite the redirect.
> 
> My question was more about the placement within  got_href.
> 3.2.0 rewrites *before* normalisation, while 3.1.6 rewrites 
> *after*.  These are not equivalent, and we can't apply the 
> rules twice (or else "htm->html" would become "htm->htmll").
> Which one do we break compatibility with?

In retrospect, I think it makes more sense to do the rewrites first off,
before anything else, as 3.2 does.  I'll likely change 3.1.7 to do likewise.
But 3.2 does need a rewrite call in got_redirect as well.

-- 
Gilles R. Detillieux              E-mail: <gr...@sc...>
Spinal Cord Research Centre       WWW:    http://www.scrc.umanitoba.ca/
Dept. Physiology, U. of Manitoba  Winnipeg, MB  R3E 3J7  (Canada)