test-diff-color: disable pager for expected output on Windows (issue5555) Windows uses `more.com`, which unhelpfully adds an extra trailing line consisting only of '\r'. It also converts tab characters to spaces, which throws off the last two tests. Setting the 'ui.formatted' option is what allowed the pager to be used by these tests in the first place.

--- a/tests/test-diff-color.t	Tue May 02 17:09:00 2017 -0500
+++ b/tests/test-diff-color.t	Tue May 02 22:26:09 2017 -0400
@@ -4,6 +4,7 @@
   > [ui]
   > color = yes
   > formatted = always
+  > paginate = never
   > [color]
   > mode = ansi
   > EOF