When listing messages:

- Use the P_TRUNCATE pmode flag to prevent long msg subj from wrapping the
  terminal
- Use msghdr_text() to do the magic UTF-8/CP437 dance for messages with UTF-8
  header fields (e.g. to/from/subject)

This is why I assigned MSG_HFIELDS_UTF8 the same bit-flag value as P_UTF8. :-)