> With the currently deployed mumi, it looks like my mails in > https://issues.guix.gnu.org/issue/36207 are still mangling the '’' after > Ludo, but in a different way than before. Like Ricardo said, this is indeed a bug in guile-email, the same bug you reported earlier, in fact. I haven't fixed it yet, but I'm working on it. The fix is a little more involved than I expected. Currently, guile-email takes the entire email as a string, parses it and returns the results. This constrains all characters in the email to have the same encoding (specifically the charset in email terminology). But, an email can have characters of different encodings. Therefore it must be treated as a string of bytes not a string of characters. > place for me to start trying to debug and learning the mail processing > code paths in mumi. Parsing the email is done by guile-email. I only have a little documentation at this point (you can find it at https://guile-email.systemreboot.net/manual). So, you'll mostly have to read the source code. There is a mailing list at guile-email@systemreboot.net. Feel free to post any guile-email bugs or questions to that list. https://lists.systemreboot.net/listinfo/guile-email