diff --git a/src/testdir/util/dos.vim b/src/testdir/util/dos.vim
new file mode 100644
index 0000000..3134d34
--- /dev/null
+++ b/src/testdir/util/dos.vim
@@ -0,0 +1,9 @@
+" Settings for test script execution
+" Always use "COMMAND.COM", don't use the value of "$SHELL".
+set shell=c:\COMMAND.COM shellquote= shellxquote= shellcmdflag=/c shellredir=>
+" This is used only when the +eval feature is available.
+if executable("cmd.exe")
+   set shell=cmd.exe shellcmdflag=/D\ /c
+endif
+
+source util/setup.vim