From 3566907b5754f2a4d1043616187b016e8ad5248a Mon Sep 17 00:00:00 2001
From: Jan Larres <jan@majutsushi.net>
Date: Sat, 15 Oct 2016 20:20:03 +1300
Subject: [PATCH] Only use QuitPre functionality if supported, closes #350

The QuitPre autocommand was introduced in Vim version 7.3.544. If Vim is
older than this then don't use the HandleOnlyWindow() functionality, so
in the case of closing the last window in a tab a user will have to
close the Tagbar window themselves.
---
 autoload/tagbar.vim | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/autoload/tagbar.vim b/autoload/tagbar.vim
index e9c3f8a..aef425e 100644
--- a/autoload/tagbar.vim
+++ b/autoload/tagbar.vim
@@ -1044,7 +1044,9 @@ function! s:CreateAutocommands() abort
         autocmd BufEnter * if expand('<amatch>') !~ '__Tagbar__.*' |
                          \     let s:last_alt_bufnr = bufnr('#') |
                          \ endif
-        autocmd QuitPre * let s:vim_quitting = 1
+        if exists('##QuitPre')
+            autocmd QuitPre * let s:vim_quitting = 1
+        endif
         autocmd WinEnter * nested call s:HandleOnlyWindow()
         autocmd WinEnter * if bufwinnr(s:TagbarBufName()) == -1 |
                          \     call s:ShrinkIfExpanded() |