From fd88a56c5518734faf7438a948b582997d6b2f8a Mon Sep 17 00:00:00 2001
From: Tom Preston-Werner <tom@mojombo.com>
Date: Sun, 21 Dec 2008 21:26:33 -0800
Subject: [PATCH] fix double slash caused by empty categories

---
 lib/jekyll/post.rb | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/jekyll/post.rb b/lib/jekyll/post.rb
index 9bd624f9..4abc4e3a 100644
--- a/lib/jekyll/post.rb
+++ b/lib/jekyll/post.rb
@@ -63,7 +63,7 @@ module Jekyll
     #
     # Returns <String>
     def dir
-      path = @categories ? '/' + @categories.join('/') : ''
+      path = (@categories && !@categories.empty?) ? '/' + @categories.join('/') : ''
       if permalink
         permalink.to_s.split("/")[0..-2].join("/")
       else