patch 7.4.2228
Problem:    Test files have inconsistant modelines.
Solution:   Don't set 'tabstop' to 2, use 'sts' and 'sw'.
diff --git a/src/testdir/test_increment.vim b/src/testdir/test_increment.vim
index e53b569..8bfd95d 100644
--- a/src/testdir/test_increment.vim
+++ b/src/testdir/test_increment.vim
@@ -757,4 +757,4 @@
 endfunc
 
 
-" vim: tabstop=2 shiftwidth=2 expandtab
+" vim: shiftwidth=2 sts=2 expandtab