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Re: [sup-talk] [PATCH] Allow thread index view to sort oldest first



Excerpts from William Morgan's message of Mon Oct 12 05:48:50 -0700 2009:
> I've finally gotten a chance to look at this. It looks good so far.

Thanks for taking a look at it.

> So I definitely don't want the second patch which changes the default
> order. The configuration boolean is fine. (And if you want to add a
> question to sup-config, that's icing on the cake.)

I totally understand that, and that's why I did that part as a
separate patch.

> I would also like to disable forcing the loading of all messages.

I can understand that too.

> It is possible in Ferret: remove the DESC in ferret_index.rb line 160.
> It is also possible in Xapian, but we're building the Xapian index to
> optimize newest-first access. (Of course that would also be possible to
> change, but then we're talking about a total index rebuild.)
> 
> If you wanted to tweak that, the load-all-threads wouldn't be necessary.

How do we get this behavior in xapian? I'm fine if the index is not
optimized for this. The current newest-first optimization is perfect
for actual searching, (as opposed to reading of new messages), and the
patches don't change that.

> Either way, I'm happy to merge the first patch with the "n = -1" thing
> removed.

I wouldn't want the patch accepted with just that change. It results
in a "broken" view, (it claims to be showing the oldest message first,
but it doesn't, and trying to scroll "up" to see earlier messages also
doesn't work).

So I'll see if I can figure out how to just load the N oldest message
instead. (My working theory was that this perform similarly to
actually loading all the messages, and that's why the patch just did
that).

> Pretty easy to change. In thread.rb, there's a date method which takes a
> max; you can make it take a min instead.

Excellent. I'll take a look at that.

> The hard work for both of these things is wiring this option through.
> Although $config is a global variable, I don't really want to use it
> directly in e.g. thread.rb.

OK. I'll see if there's nearby code to mimic for this.

-Carl

> > PS. We're still total ruby newbies, so please point out any silly
> > mistakes we're missing with respect to ruby idioms.
> 
> Everything looks good. The only slgihtly non-idiomatic thing is using
> "if !x" instead of "unless x".

Heh. Just today I noticed "unless" while poking around in some sup
code. I have to say that "unless ... else" seems like a downright
malicious construct to unleash against people reading code.

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