Problem with special characters (Umlaute ä, ...) and "/" in folder Names

[Jan Bickel]

Hey there,

I'm trying to use offlineimap for batch migrating a ton of accounts from 
one server to another. This works quite well (though it could be a 
little faster ^^) but sometimes I have Problems with special characters, 
specifically german "umlaute" (ö,ä,ü, and also ß) in folder names.


Folder 'YYY/XXX&-AOQ-XXX&-APw-XXX'[RepoRemote-Account-2] could not be 
created. Server responded: ('NO', ['Invalid mailbox name'])


I thought maybe the destination server has problems with it, since the 
encoding seems to be right, but I could create such folders there manually.

I also tried to enable "utf8foldernames" but this didn't help.

Also "decodefoldernames" was tried wich lead to a loop:

ERROR: INFINITE FOLDER CREATION DETECTED! Folder 
'INBOX.YYY.XXX&-AOQ-XXX&-APw-XXX'' (repository 'RepoSource-Account-2') 
would be created as folder 'YYY/XXXäXXXüXXX' (repository 
'RepoRemote-Account-2'). The latter becomes 'INBOX.YYY.XXXäXXXüXXX' in 
return, leading to infinite folder creation cycles.

Which kinda makes send since first and last folder is clearly not the same.


Another Problem I have is with "/" in folder Names. Even though I have 
one repo (source) readonly offlineimap tries to replace it there and 
detects an "infinite loop".


ERROR: INFINITE FOLDER CREATION DETECTED! Folder 'INBOX.FOO / BAR 
(repository 'RepoSource-Account-2') would be created as folder 'FOO / 
BAR' (repository 'RepoRemote-Account-2'). The latter becomes 'INBOX.FOO 
. BAR' in return, leading to infinite folder creation cycles.

(If you are confused: I have a nametrans which gets rid of INBOX.)


Can someone please help me.


Have a nice day!


Best regards,

Jan