--- a/contrib/gadialog.el	Thu Oct 01 22:29:18 2020 +0300
+++ b/contrib/gadialog.el	Thu Oct 01 22:42:47 2020 +0300
@@ -60,6 +60,7 @@
     (forward-line 1))
   (unless (re-search-forward "^# " (+ (point) 10240) t)
     (goto-char (point-max)))
+  (when (eobp) (insert-char ?\n))
   (forward-line 0)
   (gadialog-cleaup-whitespaces-forward)
   (insert "\n# ")