Fix MH-E bug #470: Show buffer discards text properties
* lisp/mh-e/mh-show.el (mh-display-msg): reset font lock and set major mode *before* formatting message content. This changes lets fonts work when the Show buffer is reused for a new message. (mh-show-mode): no longer set buffer-read-only; that is better done by mh-display-msg after setting all content.
Showing with 6 additions and 8 deletions