From 8529c90a4da581d0e1e6b4f569f91b59a66c4450 Mon Sep 17 00:00:00 2001
From: Michael Ding <dingyan@freestorm.org>
Date: Thu, 22 Nov 2012 17:14:45 +0800
Subject: [PATCH] use downcase string for extname

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

diff --git a/lib/linguist/blob_helper.rb b/lib/linguist/blob_helper.rb
index d7f56de5..7377008d 100644
--- a/lib/linguist/blob_helper.rb
+++ b/lib/linguist/blob_helper.rb
@@ -20,7 +20,7 @@ module Linguist
     #
     # Returns a String
     def extname
-      File.extname(name.to_s)
+      File.extname(name.to_s).downcase
     end
 
     # Internal: Lookup mime type for extension.