From d274d37263e99193567606ac2b7929bc64dba091 Mon Sep 17 00:00:00 2001
From: Jack Nagel <jacknagel@gmail.com>
Date: Thu, 5 Jan 2012 11:57:24 -0600
Subject: [PATCH] Tab: handle non-core kegs without receipts

Passing Formula.factory the name of a keg that belongs to a non-core
formula will cause an error to be raised; we don't really care, so just
fake a totally empty install receipt in this case.

Signed-off-by: Jack Nagel <jacknagel@gmail.com>
---
 Library/Homebrew/tab.rb | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/Library/Homebrew/tab.rb b/Library/Homebrew/tab.rb
index ec80b0204f..3dd33302f4 100644
--- a/Library/Homebrew/tab.rb
+++ b/Library/Homebrew/tab.rb
@@ -33,7 +33,11 @@ class Tab < OpenStruct
     if path.exist?
       self.from_file path
     else
-      self.dummy_tab Formula.factory(keg.parent.basename)
+      begin
+        self.dummy_tab Formula.factory(keg.parent.basename)
+      rescue FormulaUnavailableError
+        Tab.new :used_options => [], :unused_options => []
+      end
     end
   end