patch 8.0.1638: popup test fails depending on environment variable commit https://github.com/vim/vim/commit/e7499ddc33508d3d341e96f84a0e7b95b2d6927c Author: Bram Moolenaar <Bram@vim.org> Date: Sat Mar 24 17:56:13 2018 +0100 patch 8.0.1638: popup test fails depending on environment variable Problem: Popup test fails depending on environment variable. Solution: Reset $COLORFGBG when running Vim in a terminal. (closes https://github.com/vim/vim/issues/2693)