;; Render the primary part.
(notmuch-show-insert-bodypart msg (car inner-parts) depth)
+ ;; Add hidden buttons for the rest
+ (mapc (lambda (inner-part)
+ (notmuch-show-insert-bodypart msg inner-part depth t))
+ (cdr inner-parts))
(when notmuch-show-indent-multipart
(indent-rigidly start (point) 1)))