When using 'Mark messages as read' on a folder with subfolders, Evolution prompts if you would like to mark messages in the current folder or in the current folder and its subfolders, even when there aren't any unread messages.

A more charming way of doing things would be to disable the 'Mark messages as read' item of the right-click popup menu altogether when there are no unread messages in neither the folder that was right-clicked nor any of it's subfolders, and only ask when there are unread messages in the current folder *and* one of the subfolders.

I hope you guys understand what I'm trying to say.

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