patch 8.1.0679: sign functions do not take buffer argument as documented commit https://github.com/vim/vim/commit/2cbc1a02cb72916dfdbd0d307512c7c3fb766edf Author: Bram Moolenaar <Bram@vim.org> Date: Wed Jan 2 13:40:31 2019 +0100 patch 8.1.0679: sign functions do not take buffer argument as documented Problem: Sign functions do not take buffer argument as documented. Solution: Use get_buf_tv(). (Yegappan Lakshmanan, closes https://github.com/vim/vim/issues/3755)

" 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