How to handle UTF-8 email headers (like Subject:) using Ruby?

Question

I\'m an email n00b but I am working on an application that sends HTML email with Unicode characters (as my friend noted \"enjoy encoding hell\").

The Subject:<

Answer 1

Ahah! ActionMailer::Quoting has a quoted_printable method.

So here's what I did:

def my_email(foo)
  ...
  @subject = quoted_printable(foo.some_subject_with_accented_chars, 'utf-8')
  ...
end

Doing this convinced Mail.app to display the rest of the email using UTF-8. Now to test the rest!