(defun gnus-summary-set-article-display-arrow (pos)
"Update the overlay arrow to point to line at position POS."
- (when (and gnus-summary-display-arrow
- (boundp 'overlay-arrow-position)
- (boundp 'overlay-arrow-string))
+ (when gnus-summary-display-arrow
+ (make-local-variable 'overlay-arrow-position)
+ (make-local-variable 'overlay-arrow-string)
(save-excursion
(goto-char pos)
(beginning-of-line)