[Bug 288931] New: Wrong threading by subject

[Bernd Oliver Sünderhauf]

https://bugs.kde.org/show_bug.cgi?id=288931

           Summary: Wrong threading by subject
           Product: kmail2
           Version: 4.7
          Platform: Ubuntu Packages
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: NOR
         Component: message list
        AssignedTo: kdepim-bugs at kde.org
        ReportedBy: pancho at kriko.org


Created an attachment (id=66715)
 --> (http://bugs.kde.org/attachment.cgi?id=66715)
Screenshots

Version:           4.7 (using KDE 4.7.3) 
OS:                Linux

Threading by subject seems to create erroneous threads in some cases, when many
mails should be grouped under one parent mail.

Reproducible: Always

Steps to Reproduce:
Create an email with the subject "Test".
Create several emails, each with the subject "Re: Test" to imitate responses by
MS Outlook.

Actual Results:  
Of the "Re"-Mails, only some of them are placed on the correct level and the
remainder is incorrectly placed to a third or even fourth level (see the second
screenshot).

Expected Results:  
All mails should be grouped at the same level under the parent mail.

Also, from a certain complexity on, the threading seems to take place only
after a restart, see the first screenshot (before restart).

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