updated for version 7.3.1223
Problem:    Tests fail on MS-Windows.
Solution:   Avoid depending on OS version. Use DOS commands instead of Unix
            commands. (Taro Muraoka, Ken Takata)
diff --git a/src/testdir/test77.in b/src/testdir/test77.in
index 8ac7e10..0dbc4fc 100644
--- a/src/testdir/test77.in
+++ b/src/testdir/test77.in
@@ -23,6 +23,7 @@
 :w! Xtest
 :r !cksum Xtest
 :s/\s/ /g
+:set fileformat&
 :.w! test.out
 :qa!
 ENDTEST