patch 8.1.1261: no error for quickfix commands with negative range commit https://github.com/vim/vim/commit/25190db225d63e185e77e043e694ef455b3cf304 Author: Bram Moolenaar <Bram@vim.org> Date: Sat May 4 15:05:28 2019 +0200 patch 8.1.1261: no error for quickfix commands with negative range Problem: No error for quickfix commands with negative range. Solution: Add ADDR_UNSIGNED and use it for quickfix commands. Make assert_fails() show the command if the error doesn't match.