In VimScript, How to test if a window is the last window

I'v made a mapping:

nmap: <ESC><ESC&g开发者_运维百科t; :close<CR>

But this mapping can't close the last openned window

So I plan to write a function to test if the current window is the last openned window

Thanks in advance

I use the following to tell if the quickfix windows is the only remaining if so exiting without prompt.

if winbufnr(2) == -1
   quit!
endif

Here is my entire code from my .vimrc:

autocmd BufEnter * call MyLastWindow()

function! MyLastWindow()
   if &buftype=="quickfix"
      " if this window is last on screen quit without warning
      if winbufnr(2) == -1
         quit!
      endif
   endif
endfunction 

You could modify it to simply do a close if its not the last window and do a quit! if it is. Obviously calling it from your mapping instead of from an autocmd.

Why not just use:

nmap: <ESC><ESC> :quit<CR>

I see it's been mentioned in the comments, but this deserves to be presented as an answer: winnr('$'). From :help winnr()

The result is a Number, which is the number of the current window. The top window has number 1. When the optional argument is "$", the number of the last window is returned (the window count).

So you could do,

if winnr('$') == 1
  " only one window
endif

It has always surprised me that there isn't a native way of finding such information. I have a function that returns the number of open windows by crudely counting them using the windo command:

fun! NumWindows()
    let num_wins = 0
    windo let num_wins += 1
    return num_wins
endfun

So you have reached the last window when NumWindows() == 1.

(I think I may have stolen the windo idea from another thread, but I'm afraid I can't remember which.)