From kmail-devel  Fri Dec 29 01:34:00 2006
From: Adam Porter <bugs.kde.org () alphapapa ! net>
Date: Fri, 29 Dec 2006 01:34:00 +0000
To: kmail-devel
Subject: [Bug 139341] New: Filters + dIMAP causes filtered messages to
Message-Id: <20061229023357.139341.bugs.kde.org () alphapapa ! net>
X-MARC-Message: https://marc.info/?l=kmail-devel&m=116735605829048

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http://bugs.kde.org/show_bug.cgi?id=139341         
           Summary: Filters + dIMAP causes filtered messages to temporarily
                    disappear until folder is refreshed
           Product: kmail
           Version: unspecified
          Platform: Debian testing
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: NOR
         Component: general
        AssignedTo: kmail-devel kde org
        ReportedBy: bugs.kde.org alphapapa net


Version:            (using KDE KDE 3.5.5)
Installed from:    Debian testing/unstable Packages

I've noticed this behavior for some time, but I think I finally understand what's happening well enough to be able to report it.

Disconnected IMAP account used with incoming message filters:

1.  Message arrives in "inbox", the root folder for the dIMAP account.
2.  KMail downloads the message when the account is synced.
3.  After downloading the message, KMail runs the configured filters on it, finding a header match, and moving it to a subfolder in the dIMAP account.
4.  The message disappears from "inbox" and appears in the subfolder.
5.  The sync process has continued while this is going on, and *after the message is moved to the subfolder*, the sync process reaches the subfolder that the message was moved to.
6.  According to the IMAP server, the message that was just moved to the subfolder is not in the subfolder, so KMail removes it from the local copy of the  subfolder.  Hence, message disappears.
7.  KMail uploads messages in the subfolder to the IMAP server that are not currently on the IMAP server's copy of the subfolder.
8.  The sync process continues to other subfolders in the dIMAP account.
9.  On the *next* account sync or refresh of that individual subfolder, KMail redownloads the filtered message from the server.  Hence, message reappears.

This behavior is very consistent; I've been seeing it for months.  It's quite reliable too; the messages always reappear in the right place on the second sync/refresh.  It's quite annoying, though, to have to double-sync/refresh your account to see all your new messages.
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