patch 8.2.1289: crash when using a custom completion function Commit: https://github.com/vim/vim/commit/c841afff6a89592f23710c6da5b0fea89b240937 Author: Bram Moolenaar <Bram@vim.org> Date: Sat Jul 25 14:11:55 2020 +0200 patch 8.2.1289: crash when using a custom completion function Problem: Crash when using a custom completion function. Solution: Initialize all of the expand_T. (closes https://github.com/vim/vim/issues/6532)