From 3e63bdb7c4046a28ee85428a76ac2e0186651387 Mon Sep 17 00:00:00 2001
From: Tim Pope <code@tpope.net>
Date: Wed, 13 Apr 2011 10:30:12 -0400
Subject: [PATCH] More accurate writability check for helptags

---
 autoload/pathogen.vim | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/autoload/pathogen.vim b/autoload/pathogen.vim
index e10fac9..330cd9f 100644
--- a/autoload/pathogen.vim
+++ b/autoload/pathogen.vim
@@ -133,7 +133,7 @@ let s:done_bundles = ''
 " Invoke :helptags on all non-$VIM doc directories in runtimepath.
 function! pathogen#helptags() " {{{1
   for dir in pathogen#split(&rtp)
-    if dir[0 : strlen($VIM)-1] !=# $VIM && isdirectory(dir.'/doc') && !empty(glob(dir.'/doc/*')) && (!filereadable(dir.'/doc/tags') || filewritable(dir.'/doc/tags'))
+    if dir[0 : strlen($VIMRUNTIME)-1] !=# $VIMRUNTIME && filewritable(dir.'/doc') == 2 && !empty(glob(dir.'/doc/*')) && (!filereadable(dir.'/doc/tags') || filewritable(dir.'/doc/tags'))
       helptags `=dir.'/doc'`
     endif
   endfor