On Thu, May 10, 2012 at 9:28 AM, Stephen J. Turnbull wrote: > > The MIME *approach* probably *is* portable; you didn't test it. > > The MIME *type* application/emacs-lisp is *non*-portable. That's > exactly what the "application" type is for. > What is the MIME approach to handling text that is perfectly fine to display plainly, but can be optionally enhanced with for example syntax highlighting? Are MUAs supposed to have a list of all of them? Wouldn't it be better with "Content-type: text/plain/elisp" or some such? Naïvely, -- René