;; first loading gnus-art, which defines it, resulting in a
;; void-variable error. Hence, we advise `mm-shr' to ensure gnus-art
;; is loaded.
-(when (>= emacs-major-version 24)
- (defadvice mm-shr (before load-gnus-arts activate)
- (require 'gnus-art nil t)
- (ad-disable-advice 'mm-shr 'before 'load-gnus-arts)
- (ad-activate 'mm-shr)))
+(define-advice mm-shr (:before (_handle) notmuch--load-gnus-args)
+ "Require `gnus-art' since we use its variables."
+ (require 'gnus-art nil t))
(defun notmuch-mm-display-part-inline (msg part content-type process-crypto)
"Use the mm-decode/mm-view functions to display a part in the