From f52625be83d6ba5509840f725885cae0263cb3ed Mon Sep 17 00:00:00 2001
From: Andy Stewart <boss@airbladesoftware.com>
Date: Fri, 15 Mar 2013 10:00:09 +0100
Subject: [PATCH] Fix bug where vim-gitgutter tried to run for non-files.

---
 plugin/gitgutter.vim | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/plugin/gitgutter.vim b/plugin/gitgutter.vim
index ed03839..b1f2528 100644
--- a/plugin/gitgutter.vim
+++ b/plugin/gitgutter.vim
@@ -60,7 +60,7 @@ function! s:file()
 endfunction
 
 function! s:exists_file()
-  return strlen(s:file()) > 0
+  return filereadable(s:file())
 endfunction
 
 function! s:directory_of_file()
@@ -99,7 +99,7 @@ function! s:snake_case_to_camel_case(text)
 endfunction
 
 function! s:buffers()
-  return range(1, bufnr('$'))
+  return filter(range(1, bufnr('$')), 'buflisted(v:val)')
 endfunction
 
 " }}}