From 773db6a3ba96e328894186948461e17895af2665 Mon Sep 17 00:00:00 2001
From: Xu Cheng <xucheng@me.com>
Date: Thu, 30 Jul 2015 16:31:47 +0800
Subject: [PATCH] ARGV#spec: allow pass default value

---
 Library/Homebrew/extend/ARGV.rb | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/Library/Homebrew/extend/ARGV.rb b/Library/Homebrew/extend/ARGV.rb
index 89ac6abf1b..7e0bd7febd 100644
--- a/Library/Homebrew/extend/ARGV.rb
+++ b/Library/Homebrew/extend/ARGV.rb
@@ -190,13 +190,13 @@ module HomebrewArgvExtension
 
   private
 
-  def spec
+  def spec(default=:stable)
     if include?("--HEAD")
       :head
     elsif include?("--devel")
       :devel
     else
-      :stable
+      default
     end
   end