Most Recently Used Buffer search using FZF in Vim

mru.vim

" Use 'ffr' in normal mode to start it
nmap ffr :MRUFilesCWD<CR>

" MRU handling, limited to current directory
command! MRUFilesCWD call fzf#run({
\  'source':  s:mru_files_for_cwd(),
\  'sink':    'edit',
\  'options': '-m -x +s --prompt=MRU:'.shellescape(pathshorten(getcwd())).'/',
\  'down':    '40%' })

" This relies on the yegappan/mru plugin for live MRU updating. Also relies on
" the fact that you don't change the location of the file it uses as its cache.
function! s:mru_files_for_cwd()
  return map(filter(
  \  systemlist("sed -n '2,$p' ~/.vim_mru_files"),
  \  "v:val =~ '^" . getcwd() . "' && v:val !~ '__Tagbar__\\|\\[YankRing]\\|fugitive:\\|NERD_tree\\|^/tmp/\\|.git/'"
  \ ), 'fnamemodify(v:val, ":p:.")')
endfunction