From dc4f2fed05f0e21aaf782c52a7051d4da1f4519e Mon Sep 17 00:00:00 2001
From: Tim Pope <code@tpope.net>
Date: Wed, 10 Aug 2011 23:19:31 -0400
Subject: [PATCH] Use read-only tags if already generated

---
 plugin/rake.vim | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/plugin/rake.vim b/plugin/rake.vim
index 589270e..56dca3f 100644
--- a/plugin/rake.vim
+++ b/plugin/rake.vim
@@ -516,7 +516,7 @@ call s:navcommand('task')
 " Rtags {{{1
 
 function! s:project_tags_file() dict abort
-  if filewritable(self.path())
+  if filereadable(self.path('tags')) || filewritable(self.path())
     return self.path('tags')
   else
     if !has_key(self,'_tags_file')