From 02d7abe2ec9491c6c56b6f59749d5ff911ba69ed Mon Sep 17 00:00:00 2001
From: Xu Cheng <xucheng@me.com>
Date: Mon, 16 Nov 2015 19:23:48 +0800
Subject: [PATCH] add Formula#pinned_version

---
 Library/Homebrew/formula.rb     | 5 +++++
 Library/Homebrew/formula_pin.rb | 4 ++++
 2 files changed, 9 insertions(+)

diff --git a/Library/Homebrew/formula.rb b/Library/Homebrew/formula.rb
index 9543f3ad48..50200e8048 100644
--- a/Library/Homebrew/formula.rb
+++ b/Library/Homebrew/formula.rb
@@ -936,6 +936,11 @@ class Formula
     @pin.pinned?
   end
 
+  # @private
+  def pinned_version
+    @pin.pinned_version
+  end
+
   # @private
   def pin
     @pin.pin
diff --git a/Library/Homebrew/formula_pin.rb b/Library/Homebrew/formula_pin.rb
index 9a9aa4cedf..7ecad9d7b2 100644
--- a/Library/Homebrew/formula_pin.rb
+++ b/Library/Homebrew/formula_pin.rb
@@ -33,4 +33,8 @@ class FormulaPin
   def pinnable?
     @f.rack.exist? && @f.rack.subdirs.length > 0
   end
+
+  def pinned_version
+    Keg.new(path.resolved_path).version if pinned?
+  end
 end