[Bug 279115] New: Standard Mailing list doesn't thread properly

[Jonathan M Davis]

https://bugs.kde.org/show_bug.cgi?id=279115

           Summary: Standard Mailing list doesn't thread properly
           Product: kmail2
           Version: unspecified
          Platform: Archlinux Packages
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: NOR
         Component: sieve
        AssignedTo: kdepim-bugs at kde.org
        ReportedBy: jmdavisProg at gmx.com


Version:           unspecified (using KDE 4.7.0) 
OS:                Linux

Kmail lists itself as 4.7.0 just like KDE, so I don't know what application
version number (2.x) it is, hence why I left it as unspecified.

Okay. I'm using the "Standard Mailing List" mode for a folder which has e-mails
from a mailing list in it. That makes it select

Grouping: None
Group expand policy: - (grayed out)
Threading: Perfect, by References and Subject
Thread leader: Topmost Message (grayed out)
Thread expand policy: Expand Threads With Unread or Important Messages

in the Groups & Threading tab, and

Fill view strategy: Favor Interactivity

in the Advanced tab

Kmail does manage to put messages in the correct thread, but it frequently
threads them under the original message or only one deep. It doesn't usually
put them under the message that they were actually replying to. It does
sometimes, but usually not. Kmail 1 on another machine of my machines threads
much better with the same folder with the same messages. Kmail 2 doesn't really
thread them correctly much beyond getting them under the correct parent.

If it matters, I'm using disconnected IMAP via gmx.com, and I'm using the
mailing lists for D: http://www.digitalmars.com/NewsGroup.html (primarily
digitalmars.D).

Reproducible: Always

Steps to Reproduce:
Have a folder using "Standard Mailing List" for its configuration. Have
messages from a mailing list in that folder.

Actual Results:  
Messages are under the correct overall parent but generally don't end up under
their own correct parent.

Expected Results:  
Messages are nicely threaded so that they're threaded under the messages that
they reply to.

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