patch 8.1.0807: session test fails on MS-Windows commit https://github.com/vim/vim/commit/9e79ccbe9ce6fce18939c7ac2e5ad059a3bd1951 Author: Bram Moolenaar <Bram@vim.org> Date: Thu Jan 24 15:57:30 2019 +0100 patch 8.1.0807: session test fails on MS-Windows Problem: Session test fails on MS-Windows. Solution: Don't try creating file with illegal name.

" Settings for test script execution
" Always use "COMMAND.COM", don't use the value of "$SHELL".
set shell=c:\COMMAND.COM shellquote= shellxquote= shellcmdflag=/c shellredir=>
" This is used only when the +eval feature is available.
if executable("cmd.exe")
   set shell=cmd.exe
endif

source setup.vim