1 Display any text/* part with the internal viewer, see upstream bug
2 http://bugs.mutt.org/3246
11 - if (!ascii_strcasecmp ("plain", m->subtype) ||
12 - !ascii_strcasecmp ("rfc822-headers", m->subtype) ||
13 - !ascii_strcasecmp ("enriched", m->subtype))
15 + /* we can display any text, overridable by auto_view */