find threads where I and Jian participated but not Dave

[Gaute Hope]

David Bremner writes on juni 15, 2017 22:20:
> Daniel Kahn Gillmor <dkg at fifthhorseman.net> writes:
> 
>>
>> One of my long-standing wishes is to be able to say "show me mails in my
>> inbox from people who have replied to messages i've sent them".
>>
>> This could be re-framed as "show me threads in which i've participated,
>> where there are some messages flagged with 'inbox'".  but generating a
>> huge list of all threads in which i've participated, just to be able to
>> do an intersection operation with a (much smaller) list of all threads
>> that have a message with the inbox flag seems like a pretty gross
>> inefficiency.
> 
> At the moment the best we could do is essentially the same algorithm,
> but in C instead of shell / python. Threads are not documents in the
> database, so they can't efficiently be searched for.  Of course we could
> change that, but those kind of changes take a fair amount of effort, and
> some careful design work.

There are probably multiple earlier references to this, but here's one:

  id:1471858269.x2m28lgosh.astroid at strange

matching against the whole thread vs the individual messages would be
very useful!


Regards, Gaute