patch 8.0.1523: cannot write and read terminal screendumps commit https://github.com/vim/vim/commit/d96ff165113ce5fe62107add590997660e3d4802 Author: Bram Moolenaar <Bram@vim.org> Date: Sun Feb 18 22:13:29 2018 +0100 patch 8.0.1523: cannot write and read terminal screendumps Problem: Cannot write and read terminal screendumps. Solution: Add term_dumpwrite(), term_dumpread() and term_dumpdiff(). Also add assert_equalfile().