patch 8.0.0271: may get ml_get error when :tcldo deletes lines commit https://github.com/vim/vim/commit/a4c906a4a111cbe59cf5f1e8354a36ba83e0a444 Author: Bram Moolenaar <Bram@vim.org> Date: Sun Jan 29 23:26:37 2017 +0100 patch 8.0.0271: may get ml_get error when :tcldo deletes lines Problem: May get ml_get error when :tcldo deletes lines or switches to another buffer. (Nikolai Pavlov, closes https://github.com/vim/vim/issues/1421) Solution: Check the buffer and line every time.