patch 8.2.1510: using "var" in :def function may refer to legacy script var Commit: https://github.com/vim/vim/commit/5390099a9733f7952a612670693dd4ebf9e0e178 Author: Bram Moolenaar <Bram@vim.org> Date: Sat Aug 22 19:02:02 2020 +0200 patch 8.2.1510: using "var" in :def function may refer to legacy script var Problem: Using "var" in a :def function may refer to a legacy Vim script variable. Solution: Require using "s:" to refer to a legacy Vim script variable. (closes #6771)