updated for version 7.4.588
Problem:    ":0argedit foo" puts the new argument in the second place instead
            of the first.
Solution:   Adjust the range type. (Ingo Karkat)
diff --git a/src/testdir/Make_os2.mak b/src/testdir/Make_os2.mak
index 1ba2dfe..0b3ce26 100644
--- a/src/testdir/Make_os2.mak
+++ b/src/testdir/Make_os2.mak
@@ -37,6 +37,7 @@
 		test94.out test95.out test96.out test98.out test99.out \
 		test100.out test101.out test102.out test103.out test104.out \
 		test105.out test106.out test107.out \
+		test_argument_0count.out \
 		test_argument_count.out \
 		test_autoformat_join.out \
 		test_breakindent.out \