From 44533707686c09972bf845c31544368bdfe0ce4f Mon Sep 17 00:00:00 2001
From: Tim Pope <code@tpope.net>
Date: Mon, 13 Jun 2011 22:38:13 -0400
Subject: [PATCH] Fix trailing blank line when editing index files

I can't consistently reproduce this, but a binary write is the logical
thing to do in this case, and seems to work.
---
 plugin/fugitive.vim | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/plugin/fugitive.vim b/plugin/fugitive.vim
index 4886dcf..acb6169 100644
--- a/plugin/fugitive.vim
+++ b/plugin/fugitive.vim
@@ -1632,7 +1632,7 @@ function! s:ReplaceCmd(cmd,...) abort
         let prefix = 'env GIT_INDEX_FILE='.s:shellesc(a:1).' '
       endif
     endif
-    call writefile(split(system(prefix.a:cmd), "\n", 1), tmp)
+    call writefile(split(system(prefix.a:cmd), "\n", 1), tmp, 'b')
   finally
     if exists('old_index')
       let $GIT_INDEX_FILE = old_index