From 558e51bd5ca39b194aff9c8b0247f13c7fb0ec94 Mon Sep 17 00:00:00 2001
From: Andy Stewart <boss@airbladesoftware.com>
Date: Mon, 2 Sep 2019 10:40:25 +0100
Subject: [PATCH] Avoid duplicate autocommands in previewing window.

---
 autoload/gitgutter/hunk.vim | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/autoload/gitgutter/hunk.vim b/autoload/gitgutter/hunk.vim
index 2148643..8512d9d 100644
--- a/autoload/gitgutter/hunk.vim
+++ b/autoload/gitgutter/hunk.vim
@@ -476,7 +476,10 @@ endfunction
 
 
 function! s:enable_staging_from_hunk_preview_window()
-  execute 'autocmd BufWriteCmd <buffer='.winbufnr(s:winid).'> GitGutterStageHunk'
+  augroup gitgutter_hunk_preview
+    autocmd!
+    execute 'autocmd BufWriteCmd <buffer='.winbufnr(s:winid).'> GitGutterStageHunk'
+  augroup END
 endfunction