[imp] creating/deleting folders with dots

[Oliver Kuhl]

Hi!

In the foldes-view I created a folder called "Dr.Web". Then a folder "Dr" was 
created and a folder "Web" beneath. That's not what I expected.

What do you think, is it a bug? Or is there an option to prevent users creating 
folders with dots? I think the problem is in my case the courier-imap-server 
with maildir, which doesn't allow dots in the folders because they're 
interpreted as another folder. Maybe there is a possibility to replace the dot 
with any kind of entity.
The other Problem is that you can't easily delete the folder "Dr". You have to 
delete the folder "Web" and cannot delete "Dr", but if you log out and in again 
the folder "Dr" is gone. Seems to be cache by IMP.

In my opinion two behaviours of IMP would be fine:
1. Folders with dots cannot be created and the user gets an error-message.
2. Folders with dots can be created and the created folder really has the name 
the user wants (i.e. "Dr.Web")

What do you think?

Regards,
   Oliver.