From 08d6907ce0f423393c7cb8c6ec96bd27591ca65c Mon Sep 17 00:00:00 2001
From: Tim Felgentreff <timfelgentreff@gmail.com>
Date: Mon, 10 Oct 2011 20:21:41 -0700
Subject: [PATCH] Edit Gemfile to use the swiggly-operator when specifying a
 version of rack+tilt via an environment variable

---
 Gemfile | 11 ++++++++---
 1 file changed, 8 insertions(+), 3 deletions(-)

diff --git a/Gemfile b/Gemfile
index a4ffa91af9..e1e2ba5fe8 100644
--- a/Gemfile
+++ b/Gemfile
@@ -19,9 +19,14 @@ gem 'ci_reporter', :group => :ci
 github = "git://github.com/%s.git"
 repos = { 'tilt' => github % "rtomayko/tilt", 'rack' => github % "rack/rack" }
 %w[tilt rack].each do |lib|
-  dep = (ENV[lib] || 'stable').sub "#{lib}-", ''
-  dep = nil if dep == 'stable'
-  dep = {:git => repos[lib], :branch => dep} if dep and dep !~ /(\d+\.)+\d+/
+  dep = case ENV[lib] || 'stable'
+        when 'stable'
+          nil
+        when /(\d+\.)+\d+/
+          "~> " + ENV[lib].sub("#{lib}-", '')
+        else
+          {:git => repos[lib], :branch => dep}
+        end
   gem lib, dep
 end