patch 8.1.1111: it is not easy to check for infinity commit https://github.com/vim/vim/commit/fda1bff39f89775b20a2d88ef3903656d52f66ad Author: Bram Moolenaar <Bram@vim.org> Date: Thu Apr 4 13:44:37 2019 +0200 patch 8.1.1111: it is not easy to check for infinity Problem: It is not easy to check for infinity. Solution: Add isinf(). (Ozaki Kiichi, closes https://github.com/vim/vim/issues/3787)