patch 8.1.1908: every popup window consumes a buffer number Commit: https://github.com/vim/vim/commit/00b0d6d8dc2c04b3cb26ea3c3d58527939f01af6 Author: Bram Moolenaar <Bram@vim.org> Date: Wed Aug 21 22:25:30 2019 +0200 patch 8.1.1908: every popup window consumes a buffer number Problem: Every popup window consumes a buffer number. Solution: Recycle buffers only used for popup windows. Do not list popup window buffers.

" 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