How to automatically close all the terminal buffers when closing vim with :qa?

Question

I am wondering if there is a way to automatically force-wipe all the running terminals when quitting Vim with :qa.

My attempt (that does not work):

vim9script

def WipeoutTerminals()
    for buf_nr in term_list()
        exe "bw! " .. buf_nr
    endfor
enddef

augroup shoutoff_terminals
    autocmd VimLeave * call WipeoutTerminals()
augroup END

Answer 1

Here is something I did to leave automatically the "side bar".

Defined here as:

• The terminal
• The quickfix window
• The NERDTree side bar

function! IsSideBar(buf_nr)
" Return 1 if the buffer correspond to a side bar:
" - A terminal window
" - The quickfix window
" - The NERDTree side bar
" - ...
  let buf_name = bufname(a:buf_nr)
  let buf_type = getbufvar(a:buf_nr, '&filetype')
  let readonly = getbufvar(a:buf_nr, '&readonly')

  if !has('nvim')
    " Neovim doesn't support the term_list function
    let term_buffers = term_list()
  else
    let term_buffers = []
  endif

  if buf_type ==# 'qf'
    " QuickFix, LocationList:
    " Not Read Only
    echom 'QuickFix'
    return 1

  " There are situation where the only buffer you have is help and you are
  elseif buf_type ==# 'nerdtree'
    " Read Only
    " echom 'NerdTree'
    return 1

  elseif index(term_buffers, a:buf_nr) >= 0
    " echom 'Console'
    return 1

  else
    return 0

  endif
endfunction

function! LeaveSideBar()
  " Go to a non side bar window
  let loop = 0
  while 1
    let loop = loop + 1
    let bufnr = bufnr('%')

    if loop > 10
      " Don't search for more than 10 windows
      " To handle the case all the windows are 'side bars'
      break
    endif

    if IsSideBar(bufnr)
      wincmd w
    else
      break
    endif

  endwhile
endfunction

command! LeaveSideBar call LeaveSideBar()

function! GetNumWindows()
  let num_windows = 0

  " echom 'winnr($):' .. winnr('$')

  for win_nr in range(1, winnr('$'))
    let buf_nr = winbufnr(win_nr)
    " echom "Analyze buffer: " . buf_nr
    if IsSideBar(buf_nr)
      continue
    endif
    let num_windows = num_windows + 1
  endfor

  " echom 'Num Windows: ' . num_windows
  return num_windows
endfunction

function! KillSideBars()
  let num_windows = GetNumWindows()
  " echom "Num windows: " . num_windows
  if num_windows > 0
    " If there are non side bar windows do nothing
    return
  endif

  " Debug
  " return

  " Delete the terminal buffers that don't correspond to a window
  let term_buffers = term_list()
  for buf_nr in term_buffers
    " echom "what about terminal: " . buf_nr
    if len(win_findbuf(buf_nr)) == 0
      " echom "delete terminal: " . buf_nr
      execute 'bd! ' . buf_nr
    endif
  endfor

  let term_buffers = term_list()
  let buf_nr = bufnr('%')
  " echom "buffer: " . buf_nr
  if index(term_buffers, buf_nr) >= 0
    " Kill the terminal buffer and quit
    " echom "terminal buffer"
    call feedkeys("\<C-w>:bd!\<CR>:quit\<CR>:\<BS>")
  endif
endfunction

" Close Vim if the last buffer is side bar:
autocmd BufEnter * call KillSideBars()

I should adapt it for :qa but it quits Vim when the last buffer visible are side bars (it kill the terminals visible or not and the remaining side bars).