Bug#833680: lists.debian.org: mhonarc encodes bad attachments with spanish accents

[Anders Jonsson]

I see this behavior also with some attachments containing åäö getting 
those characters mangled in Swedish and German.

For example:
Swedish: https://lists.debian.org/debian-l10n-swedish/2023/08/msg00001.html
German: https://lists.debian.org/debian-l10n-german/2023/07/msg00041.html