patch 8.0.0265: may get ml_get error when :pydo deletes lines commit https://github.com/vim/vim/commit/a58883b4ea0bbb813fd4dd7eb49dd6f03e3e5387 Author: Bram Moolenaar <Bram@vim.org> Date: Sun Jan 29 21:31:09 2017 +0100 patch 8.0.0265: may get ml_get error when :pydo deletes lines Problem: May get ml_get error when :pydo deletes lines or switches to another buffer. (Nikolai Pavlov, issue https://github.com/vim/vim/issues/1421) Solution: Check the buffer and line every time.