On Sat, 09 Feb 2013, Albin Stjerna <albin.stjerna@gmail.com> wrote: > Jani Nikula wrote: > >> On Fri, 08 Feb 2013, Albin Stjerna <albin.stjerna@gmail.com> wrote: >> > I've been noticing that notmuch has some problems decoding certain >> > strangely-encoded non-ascii characters in certain emails. For example, >> > today I got this: [BIBLIST] Digitaliseringensprojektens skadliga >> > f=?ISO-8859-1?Q?=F6rk=E4rlek_f=F6r_?= PDF-formatet (should be >> > rendered: »Digitaliseringsprojektens skadliga förkärlek för >> > PDF-formatet«). >> > >> > Apparently, some metadata is passed on to help the MUA decode the >> > string, but notmuch doesn't seem to handle it. Entire emails can of >> > course be supplied as needed. > >> Please copy paste the Subject: header directly from the message file. > > The exact Subject: header (from the file, not notmuch) is: > Subject: [BIBLIST] Digitaliseringensprojektens skadliga f=?ISO-8859-1?Q?=F6rk=E4rlek_f=F6r_?= PDF-formatet Is that entirely on one line in the original message file? If not, where exactly is it split? Either way, at a glance, it seems like the encoding is malformed. I think the encoded-word ("=?" charset "?" encoding "?" encoded-text "?=") should be separated by space to make it an atom. [RFC 2047, RFC 2822]. If you manually move the leading 'f' after the "?Q?" bit, it works as expected. It looks like the bug is in the sender's user agent. BR, Jani.