From 1b416292149ff29c2104cb9a7adfc5aad2cbb1eb Mon Sep 17 00:00:00 2001
From: Christian Brabandt <cb@256bit.org>
Date: Wed, 8 May 2019 13:51:50 +0200
Subject: [PATCH] async: do not show dirty sign for error messages

closes #1915
---
 autoload/airline/async.vim | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/autoload/airline/async.vim b/autoload/airline/async.vim
index f1be3d5..be3a253 100644
--- a/autoload/airline/async.vim
+++ b/autoload/airline/async.vim
@@ -358,7 +358,13 @@ endfunction
 
 function! airline#async#vim7_vcs_clean(cmd, file, vcs)
   " Vim pre 8, fallback using system()
-  let output=system(a:cmd)
+  " don't want to to see error messages
+  if g:airline#init#is_windows && &shell =~ 'cmd'
+    let cmd = a:cmd .' 2>nul'
+  else
+    let cmd = a:cmd .' 2>/dev/null'
+  endif
+  let output=system(cmd)
   if !empty(output)
     call s:set_clean_variables(a:file, a:vcs)
   endif