patch 8.2.1673: complete_info() selected index has an invalid value Commit: https://github.com/vim/vim/commit/b806aa5bd910dba94fbde586f6019b4825813d28 Author: Bram Moolenaar <Bram@vim.org> Date: Sat Sep 12 22:52:57 2020 +0200 patch 8.2.1673: complete_info() selected index has an invalid value Problem: complete_info() selected index has an invalid value. (Ben Jackson) Solution: Set the index when there is only one match. (closes https://github.com/vim/vim/issues/6945) Add test for complete_info().