--- a/vim/vimrc	Wed Jul 23 17:06:39 2014 -0700
+++ b/vim/vimrc	Fri Jul 25 09:47:05 2014 -0700
@@ -228,6 +228,9 @@
 " Make Ctrl-P cache stuff in our temp directory.
 let g:ctrlp_cache_dir = s:vim_home.'/cache'
 
+" Remember things.
+let g:ctrlp_clear_cache_on_ext = 0
+
 " Enable some cool extensions.
 let g:ctrlp_extensions = ['tag', 'buffertag', 'quickfix', 'mixed']
 
@@ -499,7 +502,7 @@
 
 function! s:SetProjectRootCwd() abort
     let l:cur_file_dir = expand('%:p:h', 1)
-    if l:cur_file_dir =~ '\v^.+://'
+    if l:cur_file_dir =~ '\v^.+:(//|\\\\)'
         return
     endif
     let l:root = l:cur_file_dir