Revert "remove ambiguous pending spec"
Revert "remove ambiguous pending spec"

This reverts commit ecdd835d823c487539decb8949c12f77643b2000.

ChrisCrewdson/googlio,brentertz/mustachio,ChrisCrewdson/googlio,afeld/mustachio,afeld/mustachio,michaeljhopkins/mustachio,brentertz/mustachio,michaeljhopkins/mustachio,ChrisCrewdson/googlio,afeld/mustachio,michaeljhopkins/mustachio