patch 8.0.0970: passing invalid highlight id commit https://github.com/vim/vim/commit/d6a7b3e6bbb8f87507de68d86cf70eab806aab3a Author: Bram Moolenaar <Bram@vim.org> Date: Sat Aug 19 21:35:35 2017 +0200 patch 8.0.0970: passing invalid highlight id Problem: if there is no StatusLine highlighting and there is StatusLineNC or StatusLineTermNC highlighting then an invalid highlight id is passed to combine_stl_hlt(). (Coverity) Solution: Check id_S to be -1 instead of zero.