fix argument confusion in kanban-headers
diff --git a/kanban.el b/kanban.el
--- a/kanban.el
+++ b/kanban.el
@@ -95,7 +95,7 @@
(if (and (= 0 matchcol) (equal "" field))
(setq matchcol n))) ; remember first empty column
(setq n (+ 1 n)))
- (when (and matchcol (> 0 matchcol))
+ (when (and matchcol (> matchcol 0))
(if (= matchcol col) (setq ofc kw))
(save-excursion
(org-table-get-field matchcol kw)))))