[Dovecot] IMAP client dependence on dovecot mail storage fromat?

[Kārlis Repsons]

Hi,

After setting up a maildir tree with :LAYOUT=fs and accessing it with KMail 
and Thunderbird, various mail client-specific problems appeared, but, as I 
didn't try with maildir++, I would like to confirm here: does that matter for 
an IMAP client much if I store mail on server as ":LAYOUT=fs" or maildir++? 
Can it see differences? 
I would like to think, that IMAP protocol should provide for all transactions 
in a standard way and its dovecot's/server's sole business how it stores mail 
locally. 
However... These results seem not very good:
KMail: try creating a folder "sub" in "parrent" and you'll get "parrent.sub" 
along with "parrent" on server side. There, however, are no problems with 
Latvian unicode chars.
Thunderbird: it can create a new folder in "parrent" as desired, but it can't 
display Latvian unicode chars (being such at server side) on client, while, if 
I try creating a new folder with Thunderbird with these chars, on server it 
will look somewhat like base64!

So I'm really confused. All together these things are pretty frustrating, 
sure, but I'd like to understand whats the real problem here!
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