patch 8.1.1355: obvious mistakes are accepted as valid expressions commit https://github.com/vim/vim/commit/16e9b85113e0b354ece1cb4f5fcc7866850f3685 Author: Bram Moolenaar <Bram@vim.org> Date: Sun May 19 19:59:35 2019 +0200 patch 8.1.1355: obvious mistakes are accepted as valid expressions Problem: Obvious mistakes are accepted as valid expressions. Solution: Be more strict about parsing numbers. (Yasuhiro Matsumoto, closes #3981)