From e36c01d335ac44812385b4375ca4988a403dfd60 Mon Sep 17 00:00:00 2001
From: Danielle McLean <gopsychonauts@gmail.com>
Date: Wed, 16 Nov 2016 10:17:55 +1100
Subject: [PATCH] Persistent undo support, saving undo files in XDG_CACHE_HOME

---
 config/vim/vimrc | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/config/vim/vimrc b/config/vim/vimrc
index 48f9fd0..bf779ec 100644
--- a/config/vim/vimrc
+++ b/config/vim/vimrc
@@ -59,6 +59,14 @@ else
   set number
 endif
 
+if exists('+undofile')
+  set undofile
+  let &undodir = $XDG_CACHE_HOME . '/vim/undo'
+  if filewritable(&undodir) != 2
+    call mkdir(&undodir, 'p', 0700)
+  endif
+endif
+
 let g:airline_powerline_fonts = 1
 let g:LatexBox_Folding = 1
 let g:NERDTreeHijackNetrw = 1