* org-table.el (org-table-field-info): Throw a user error when
not at a table.
@@ -1241,6 +1241,7 @@ is always the old value."
(defun org-table-field-info (arg)
"Show info about the current field, and highlight any reference at point."
+ (unless (org-at-table-p) (user-error "Not at a table"))
(let* ((pos (point))