updated for version 7.4.492
Problem:    In Insert mode, after inserting a newline that inserts a comment
            leader, CTRL-O moves to the right. (ZyX) Issue 57.
Solution:   Correct the condition for moving the cursor back to the NUL.
            (Christian Brabandt)
diff --git a/src/testdir/test4.ok b/src/testdir/test4.ok
index dffecda..d032e4c 100644
--- a/src/testdir/test4.ok
+++ b/src/testdir/test4.ok
@@ -15,3 +15,6 @@
 	this is a test
 this should be in column 1
 end of test file Xxx
+# abc
+def
+def