Converting between folder separators

[Sander Smeenk]

Hi,

I'm tasked with migrating 50k IMAP mailboxes from an old provider to a
new provider. The old provider uses '/' as folder separator, the new
provider uses '.'.

Some mailboxes at the old provider have '.' in the name, eg: "Archive/Dr. Jones"
This seems to create "Jones" as a subfolder of "Dr" on the new provider.

They fail to properly synchronise, in that no messages are copied, not
even to the subfolder "Jones" while there's 47 messages on the old
provider's IMAP.

I tried fiddling with nametrans, putting both in the Local and Remote
repository:
| nametrans = lambda foldername: re.sub('\.', '_', foldername)
Even tried hacking around in the OfflineIMAP source a bit, but to no avail.

Am i missing an option here?

Thanks in advance!

Regards,
-Sndr.
-- 
| Two wrongs don't make a right. But three lefts do.
| 4096R/20CC6CD2 - 6D40 1A20 B9AA 87D4 84C7  FBD6 F3A9 9442 20CC 6CD2