patch 8.1.1521: when a popup window is closed the buffer remains commit https://github.com/vim/vim/commit/7c7f01e2b260c75d9996ca9ab621119eafe13a63 Author: Bram Moolenaar <Bram@vim.org> Date: Wed Jun 12 21:06:32 2019 +0200 patch 8.1.1521: when a popup window is closed the buffer remains Problem: When a popup window is closed the buffer remains. Solution: Wipe out the buffer.

" vimrc for test_gui_init.vim

" Note that this flag must be added in the .vimrc file, before switching on
" syntax or filetype recognition (when the |gvimrc| file is sourced the system
" menu has already been loaded; the ":syntax on" and ":filetype on" commands
" load the menu too).
set guioptions+=M