[Evolution-users] Duplicate Messages

[Jonathan Ryshpan]

On Mon, 2022-12-19 at 18:46 +0100, Milan Crha via evolution-users wrote:
> > A duplicate message has just appeared. The message and its duplicate
> > have different UIDs, namely
> >  * 1671260297_4013_5796.amito
> >  * 1671260297_4013_5797.amito
> 
>         Hi,
> I guess the messages are already deleted, at least one of them, and
> you
> did not do the `diff` I asked for in the previous mail, right?
As you feared, these messages are gone from my system. However the two
pairs of duplicates that I sent to the list recently are still around.
Diff reports each message of each pair to be the same as the other.

> You also mentioned IMAP, but this looks like Maildir. Do you move
> messages from an IMAP server to an On This Computer folder? If so, you
> probably do that with filters. Can you verify there are not multiple
> filters, where one copies a message to the destination and another
> moves it there? I cannot see any other reason than this at the moment.
Just as you say, I run Maildir on my own (local) machine; the connection
between my machine and the server uses IMAP. There are a large number of
filters, more than 100. They all (at any rate I hope all) test a message
for some conditions; if there is a match the message is stored in a
folder. The filters are all open ended; i.e. non of them ends with "Stop
Processing" action. I don't remember making any change to the filters
when I started seeing duplicates.

BTW-1: I find the method for managing filters intuitive to use but
difficult to manage. It's not possible to search for a filter except as
by incremental search starting with the first letter of the filter's
name. Since I have carelessly created some filters with names like "Mail
from Evolution" and others with names like "Evolution List", this
doesn't work so well for me. Also there is no way to edit the filter
chain as a whole. It would be nice to have a sort of filter language
that could be modified with a text editor (which would also do
searches).

BTW-2: Why does the list have such a small limit on message length? 40K
is not much in a world where people commonly download videos of many
Gbytes. My entire evolution database including every email that I have
received over the past 25 years uses only about 21 Gbytes of a 1300
Gbyte filesystem.
   $ du -sh ~/.local/share/evolution/mail
   21G     /home/jonrysh/.local/share/evolution/mail


-- 
Sincerely Jonathan Ryshpan <jonrysh at pacbell.net>

 The time you enjoy wasting is not wasted time.
 --Bertrand Russell
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