From acbcef47f2291b58b7d600b0bf00c50637d3a181 Mon Sep 17 00:00:00 2001
From: Hyacinthe Cartiaux <Hyacinthe.Cartiaux@uni.lu>
Date: Thu, 26 Mar 2015 11:53:13 +0100
Subject: [PATCH] [vim] Test if the persistent undo feature is available

---
 vim/vimrc | 12 +++++++-----
 1 file changed, 7 insertions(+), 5 deletions(-)

diff --git a/vim/vimrc b/vim/vimrc
index fcfc473..1273891 100755
--- a/vim/vimrc
+++ b/vim/vimrc
@@ -153,12 +153,14 @@ set backup
 set backupdir=$HOME/.vim/backup//
 set directory=$HOME/.vim/swap//
 
-set undofile
-set undolevels=1000 "maximum number of changes that can be undone
-set undoreload=10000 "maximum number lines to save for undo on a buffer reload
-if exists("&undodir")
+if has('persistent_undo')
+  set undofile
+  set undolevels=1000 "maximum number of changes that can be undone
+  set undoreload=10000 "maximum number lines to save for undo on a buffer reload
+  if exists("&undodir")
     set undodir=$HOME/.vim/undo//
-endif
+  endif
+end
 
 set viminfo+=n$HOME/.vim/.viminfo