I broke up with neovim....vim is my best friend now

dot_vim/plugged/vimtex/test/test-indentation/test.vim

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+set nocompatible
+let &rtp = '../..,' . &rtp
+filetype plugin indent on
+
+nnoremap q :qall!<cr>
+
+set nomore
+set shiftwidth=2
+set expandtab
+
+if !empty($FLAGS)
+  if $FLAGS == 1
+    let g:vimtex_indent_on_ampersands = 0
+  elseif $FLAGS == 2
+    let g:vimtex_indent_ignored_envs = ['proof']
+  elseif $FLAGS == 3
+    let g:vimtex_indent_delims = {'close_indented': 1}
+  elseif $FLAGS == 4
+    let g:vimtex_indent_delims = {
+          \ 'open': ['{', '\['],
+          \ 'close': ['}', '\]'],
+          \ }
+  endif
+endif
+
+execute 'silent edit' $FILEIN
+
+if empty($INMAKE) | finish | endif
+
+silent normal! gg=G
+execute 'silent write!' $FILEOUT
+
+quit!