patch 8.0.1257: no test for fix of undefined behavior commit https://github.com/vim/vim/commit/2973daafe1732963b8924cb9df53c608804d66b3 Author: Bram Moolenaar <Bram@vim.org> Date: Thu Nov 2 23:15:40 2017 +0100 patch 8.0.1257: no test for fix of undefined behavior Problem: No test for fix of undefined behavior. Solution: Add a test. (closes https://github.com/vim/vim/issues/2255)

" 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