When one tries to rename an IMAP mailbox in -current mutt the suggestion is a bunch of garbled characters. I have seen this for a while but keep forgetting to report it.
Little bit of a screenshot (cut out some stuff fore brevity): y:Exit c:Chdir m:Mask ?:Help INBOX 183(35)| 1 IMAP Banana hackers 190| 2 IMAP Deleted Messages | 4 IMAP Drafts | 6 IMAP INBOX |12 IMAP Old inbox junk |13 IMAP OpenBSD |14 IMAP OpeniSCSI -- Mutt: Directory [imaps://mail.peereboom.us/], File mask: !^\.[^.] Rename mailbox OpeniSCSI to: \u008c:,,^P}????^A<!3?^A\u0088??^? ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Garbage is underscored by ^^^^