patch 8.2.1858: Vim9: filter functions return number instead of bool Commit: https://github.com/vim/vim/commit/403dc31f5a03b5858f62e72c3407ffaf827b3005 Author: Bram Moolenaar <Bram@vim.org> Date: Sat Oct 17 19:29:51 2020 +0200 patch 8.2.1858: Vim9: filter functions return number instead of bool Problem: Vim9: filter functions return number instead of bool. Solution: Return v:true instead of one. (closes https://github.com/vim/vim/issues/7144)