patch 7.4.1134
Problem:    The arglist test fails on MS-Windows.
Solution:   Only check for failure of argedit on Unix.
diff --git a/src/testdir/test_arglist.vim b/src/testdir/test_arglist.vim
index af92f15..e1b7403 100644
--- a/src/testdir/test_arglist.vim
+++ b/src/testdir/test_arglist.vim
@@ -226,7 +226,10 @@
   argedit a
   call assert_equal(['a', 'b'], argv())
   call assert_equal('a', expand('%:t'))
-  call assert_fails('argedit a b', 'E172:')
+  if has('unix')
+    " on MS-Windows this would edit file "a b"
+    call assert_fails('argedit a b', 'E172:')
+  endif
   argedit c
   call assert_equal(['a', 'c', 'b'], argv())
   0argedit x