From 0bec13a9d9a5699e5184b6b4c2700adbd622e2db Mon Sep 17 00:00:00 2001
From: ruanyl <ruanyu1@gmail.com>
Date: Sat, 21 Jun 2014 22:36:59 +0300
Subject: [PATCH] change the way of version detect for undo persistence

---
 vimrc | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/vimrc b/vimrc
index 2eca31dbf..81d635ef1 100644
--- a/vimrc
+++ b/vimrc
@@ -74,11 +74,11 @@ set noswapfile
 
 
 "create undo file
-set undolevels=1000         " How many undos
-set undoreload=10000        " number of lines to save for undo
-if v:version >= 730
-    set undofile                " keep a persistent backup file
-    set undodir=/tmp/vimundo/
+if has('persistent_undo')
+  set undolevels=1000         " How many undos
+  set undoreload=10000        " number of lines to save for undo
+  set undofile                " So is persistent undo ...
+  set undodir=/tmp/vimundo/
 endif
 
 set wildignore=*.swp,*.bak,*.pyc,*.class,.svn