* lisp/ox-icalendar.el (org-icalendar-export-current-agenda): Use `member' instead of `memq'.
@@ -888,7 +888,7 @@ This function assumes major mode for current buffer is
(seen nil)) ;prevent duplicates
(while (setq p (next-single-property-change p 'org-hd-marker))
(let ((m (get-text-property p 'org-hd-marker)))
- (when (and m (not (memq m seen)))
+ (when (and m (not (member m seen)))
(push m seen)
(with-current-buffer (marker-buffer m)
(org-with-wide-buffer
Nicolas Goaziou