From 2a191ea051b20a492a3325413dcdca11b593ba50 Mon Sep 17 00:00:00 2001
From: Christopher Burnett <cburnett@twitter.com>
Date: Wed, 22 Aug 2012 16:34:58 -0700
Subject: [PATCH] Don't attempt to parse bodies that only contain spaces.

  Rails 2.x head responses return a single space as
  the body. This is due to a Safari bug where the headers
  are not passed if the content length is zero.
---
 lib/twitter/response/parse_json.rb | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/twitter/response/parse_json.rb b/lib/twitter/response/parse_json.rb
index cc125c021..3679fab72 100644
--- a/lib/twitter/response/parse_json.rb
+++ b/lib/twitter/response/parse_json.rb
@@ -7,7 +7,7 @@ class ParseJson < Faraday::Response::Middleware
 
       def parse(body)
         case body
-        when '', nil
+        when /\A^\s*$\z/, nil
           nil
         when 'true'
           true