[Bug 264274] New: Next Unread (+) sometimes doesn't unselect previous email

[Thiago Macieira]

https://bugs.kde.org/show_bug.cgi?id=264274

           Summary: Next Unread (+) sometimes doesn't unselect previous
                    email
           Product: kmail2
           Version: 2.0.89
          Platform: Compiled Sources
        OS/Version: Linux
            Status: NEW
          Severity: normal
          Priority: NOR
         Component: message list
        AssignedTo: kdepim-bugs at kde.org
        ReportedBy: thiago at kde.org


Version:           2.0.89 (using Devel) 
OS:                Linux

Sometimes, when reading emails using the Next Unread Message (Plus) and Next
Unread Folder (Ctrl+Plus), after a new folder is selected, the selection is
stuck and won't unselect the first item that was selected with just the Next
Unread Message command.

The selection clears with the Next Message (Right) or Previous Message (Left).

This has effects on the Forward, Delete/Trash, and Move/Copy commands, since
they operate on multiple mails.

Reproducible: Sometimes

Steps to Reproduce:
1. Ensure you have a folder with more than one unread email
2. Select a folder that is sorted before it in the message list
3. Press Ctrl+Plus
   The folder with the unread email is selected
   The first unread email is selected (most of the time)
4. Press Plus

Actual Results:  
Both emails are selected. Pressing Plus again has two behaviours:
 a) the original email is kept selected, the one being viewed is unselected and
a newly unread email is selected (selection count remains at 2)
 b) the original email, the one being viewed and a newly unread email are
selected (the selection count increases to 3)

Expected Results:  
The original email is unselected and the new email is selected. The selection
count is 1.

OS: Linux (i686) release 2.6.36.2-server-1mnb
Compiler: gcc

This does not happen all the time.

This was observed also in KMail 1.x, with variant (a) in behaviour. I have
never observed more than 2 emails selected when doing this in KMail 1.x.
However, this issue happened more frequently in KMail 1.x.

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