From 3a23eeac4273af552647c2a2f6e5c17540d95212 Mon Sep 17 00:00:00 2001
From: Christian Brabandt <cb@256bit.org>
Date: Fri, 17 Mar 2017 12:01:56 +0100
Subject: [PATCH] Check that 'statusline' option is correct

statusline of quickfix window will be reset in the ftplugin of
$VIMRUNTIME, therefore check that airline is still active

fixes #1447
---
 plugin/airline.vim | 1 +
 1 file changed, 1 insertion(+)

diff --git a/plugin/airline.vim b/plugin/airline.vim
index cbd3e286..1d5ddcd5 100644
--- a/plugin/airline.vim
+++ b/plugin/airline.vim
@@ -43,6 +43,7 @@ function! s:on_window_changed()
   " different autocommands.
   let l:key = [bufnr('%'), winnr(), winnr('$'), tabpagenr()]
   if get(g:, 'airline_last_window_changed', []) == l:key
+        \ && &stl is# '%!airline#statusline('.winnr().')'
     return
   endif
   let g:airline_last_window_changed = l:key