It appears that the changes in vim 7.4.565 cause the TOC to break (see https://groups.google.com/forum/#!searchin/vim_dev/7.4.565/vim_dev/vfx6UGqpeQU/oXBj7nLu-gkJ, https://groups.google.com/forum/#!searchin/vim_dev/7.4.565/vim_dev/KE3h0THwizc/Xzk2RsEep8AJ and https://groups.google.com/forum/#!searchin/vim_dev/7.4.565/vim_dev/LLTw8JV6wKg/lS0ePwys-bYJ).