Vim and fzf with no plugins

" fzf
" https://dev.to/pbnj/interactive-fuzzy-finding-in-vim-without-plugins-4kkj
" press <leader> + ff or type :Files to open fzf file search 
let mapleader = "," " default leader is \
function! FZF() abort
    let l:tempname = tempname()
    " fzf | awk '{ print $1":1:0" }' > file
    execute 'silent !fzf --multi ' . '| awk ''{ print $1":1:0" }'' > ' . fnameescape(l:tempname)
    try
        execute 'cfile ' . l:tempname
        redraw!
    finally
    call delete(l:tempname)
endtry
endfunction
" :Files
command! -nargs=* Files call FZF()
" \ff
nnoremap <leader>ff :Files<cr>