+ ;; Make new list structure for the mouse-face value
+ ;; so that different widgets will have
+ ;; different `mouse-face' property values
+ ;; and will highlight separately.
+ (let ((mouse-face-value
+ (widget-apply widget :mouse-face-get)))
+ ;; If it's a list, copy it.
+ (if (listp mouse-face-value)
+ (copy-sequence mouse-face-value)
+ ;; If it's a symbol, put it in a list.
+ (list mouse-face-value)))))