Add support to delete buffers in :Buffers command

By pressing the CTRL-D keybinding

autoload/fzf/vim.vim

@@ -687,18 +687,30 @@ function! s:bufopen(lines)
   if len(a:lines) < 2
     return
   endif
-  let b = matchstr(a:lines[1], '\[\zs[0-9]*\ze\]')
-  if empty(a:lines[0]) && get(g:, 'fzf_buffers_jump')
+
+  let key = a:lines[0]
+  let buffer_numbers = map(a:lines[1:], {_idx, bufline -> matchstr(bufline, '\[\zs[0-9]*\ze\]')})
+
+  if key == 'ctrl-d'
+    execute 'bdelete' join(buffer_numbers, ' ')
+    return
+  endif
+
+  let b = buffer_numbers[0]
+
+  if empty(key) && get(g:, 'fzf_buffers_jump')
     let [t, w] = s:find_open_window(b)
     if t
       call s:jump(t, w)
       return
     endif
   endif
-  let cmd = s:action_for(a:lines[0])
+
+  let cmd = s:action_for(key)
   if !empty(cmd)
     execute 'silent' cmd
   endif
+
   execute 'buffer' b
 endfunction
 
@@ -728,13 +740,17 @@ endfunction
 function! fzf#vim#buffers(...)
   let [query, args] = (a:0 && type(a:1) == type('')) ?
         \ [a:1, a:000[1:]] : ['', a:000]
+
+  let expected_keys = 'ctrl-d,' . join(keys(s:default_action), ',')
+  let ctrl_d_header = ["\t\t:: Press ".s:magenta('CTRL-D', 'Special')." to delete"]
   let sorted = fzf#vim#_buflisted_sorted()
-  let header_lines = '--header-lines=' . (bufnr('') == get(sorted, 0, 0) ? 1 : 0)
+  let header_lines = '--header-lines=' . (bufnr('') == get(sorted, 0, 0) ? 2 : 1)
   let tabstop = len(sorted) >= 1000 ? 9 : 8
+
   return s:fzf('buffers', {
-  \ 'source':  map(sorted, 'fzf#vim#_format_buffer(v:val)'),
+  \ 'source':  ctrl_d_header + map(sorted, 'fzf#vim#_format_buffer(v:val)'),
   \ 'sink*':   s:function('s:bufopen'),
-  \ 'options': ['+m', '-x', '--tiebreak=index', header_lines, '--ansi', '-d', '\t', '--with-nth', '3..', '-n', '2,1..2', '--prompt', 'Buf> ', '--query', query, '--preview-window', '+{2}-/2', '--tabstop', tabstop]
+  \ 'options': ['+m', '-x', '--tiebreak=index', header_lines, '--ansi', '-d', '\t', '--with-nth', '3..', '-n', '2,1..2', '--prompt', 'Buf> ', '--query', query, '--preview-window', '+{2}-/2', '--tabstop', tabstop, '-m', '--expect', expected_keys]
   \}, args)
 endfunction