Re: Can I do this with the registry?

[Ted Zlatanov <tzz@lifelogs.com>]

On Fri, 20 Mar 2009 16:07:58 -0400 David Abrahams <dave@boostpro.com> wrote: 

DA> on Fri Mar 20 2009, Ted Zlatanov <tzz-AT-lifelogs.com> wrote:

>> On Sat, 14 Mar 2009 22:50:32 -0700 David Abrahams <dave@boostpro.com> wrote: 
>> 
DA> I'd really like a way to collect all the messages connected to a thread,
DA> no matter which groups the thread has passed through.  Can the registry
DA> help with that, and if so, how?
>> 
>> The registry can give you the following for a message ID: sender,
>> subject, mtime, and groups for that message.  You can also associate
>> persistent flags with a message.
>> 
>> What you need can be done by looking at the group 

DA> Heh, /which/ group?

The first one returned should be OK.  There's a
gnus-registry-fetch-groups that returns all the groups, but since you
want the article and don't care about where it comes from, you can just
go with the first one:

(let ((id "<m3u08y9g37.fsf@quimbies.gnus.org>")
      (group (gnus-registry-fetch-group id)))
    (debug id group)
    (gnus-activate-group group) ;; is this needed?
    (gnus-request-article id group (current-buffer)))

This doesn't work in this raw form, sorry, but it can get you started.
I couldn't work on it more right now.  Also look at the function that
runs for `^' in the summary buffer, it gets the parent article in the
current group and is close to what you want.

>> for each message ID you need, looking for the message itself, and
>> putting it in a list.  Then you can get the References for the parent
>> message and recurse.

DA> Sounds pretty compute-intensive unless I maintain some other index.

It wouldn't be hard to modify the registry to store the references for
every article it sees, like it stores the subject and sender right now.
Then it's just a quick lookup to find any article's parents.

>> I think you're asking for the list of messages to be interpreted as a
>> virtual thread inside the current group, which is pretty hard and I
>> don't know how to do it.  

DA> Not necessarily.  I might be very happy with something that works like
DA> nnmairix, by creating a "virtual" group on my client containing all the
DA> messages of interest.

I don't know if that will work well, because you'd have to make a new
one for every article and you'd have to leave the group you're currently
visiting.  But if it works for you...

DA> If you think you understand how to approach this problem and wouldn't
DA> mind pointing me in the right direction, I'd be very grateful and very
DA> willing to hack up the solution myself.

I'll be glad to help further when I have the chance.  I hope this info
is somewhat useful.

Ted