(when (zerop (length alt))
(setq alt "[img]"))
(cond
+ ((or (member (cdr (assq :height cont)) '("0" "1"))
+ (member (cdr (assq :width cont)) '("0" "1")))
+ ;; Ignore zero-sized or single-pixel images.
+ )
((and (not shr-inhibit-images)
(string-match "\\`cid:" url))
(let ((url (substring url (match-end 0)))